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II-9

Instrument Preparation

Thermo Scientific Orion 2111LL Sodium Monitor User Guide

ROSS and the COIL tradedress are trademarks of Thermo Fisher Scientific Inc. US Patent 6,793,787

Warning:

Be .sure .to .read .and .observe .the .following .requirements! . .

Diisopropylamine .is .hazardous . . .Refer .to .MSDS .for .DIPA, .available .at .

www .thermo .com/water . . .Use .protective .glasses .and .gloves . . .Refer .to .bottle .

label .for .precautions . . .Installation .of .DIPA .reagent .requires .a .fume .hood .or .

well-ventilated .area . . .

If .monitor .is .offline .or .sample .is .shut .off .from .the .instrument .for .a .

prolonged .period .of .time .be .sure .to .follow .the .

Chapter III, Shutdown &

Start-Up

Procedure

1 . . Unscrew .thumbnut .and .remove .reagent .bottle .from .the .reagent .

manifold . .
• . .New .instruments .will .ship .with .a .rubber .coated .glass .reagent .bottle .

and .complete .diffusion .tubing .assembly .installed . . .Only .installation .

of .reagent .is .necessary .for .first .time .start .up .

2 . . Twist .open .reagent .bottle, .separating .glass .bottle, .reagent .bottle .adapter .

assembly .and .plastic .cap .to .reagent .bottle .

3 . . Unscrew .the .fittings .from .base .of .the .reagent .bottle .adapter .assembly . .

dispose .of .used .diffusion .tubing .assembly .accordingly .

The .new .diffusion .tubing .assembly .for .use .with .the .Orion .2111LL .low .

level .sodium .monitor .provides .superior .locking .ability .to .maximize .uptime .

and .prevent .against .costly .blowouts . . .The .newly .designed .HDPE .locking .

mechanism .is .precisely .engineered .to .remain .connected .under .variable .

temperature .conditions .and .pressure .fluctuations . . .The .new .style .diffusion .

tubing .assembly .is .now .suspended .in .the .headspace .of .the .reagent .bottle- .

decreasing .the .rate .of .consumption .of .reagent-saving .you .time .and .money .

The .diffusion .tubing .ships .fully .assembled .for .quick .and .easy .installation . .

Occasionally .the .assembly .will .loosen .during .shipment . .

• . Be .sure .to .check .the .diffusion .assembly .for .completeness .of .

components .prior .to .installation .upon .the .reagent .bottle .cap . .

• . Do .not .use .Teflon .tape .during .installation

• . Twisting .of .the .clear .silicone .tubing .will .compromise .tubing .integrity .

and .may .cause .ruptures . . .Be .careful .to .avoid .kinks .and .twisting .during .

installation .

Installation of Reagent

& Diffusion Tubing

Recommendation

Diffusion Tubing Assembly

Tips Before Installation

Part Description

Quantity

O-ring .seal .fitting

Twist .and .lock .Cap

Pipe .Fitting

O-ring .EPDM

Ferrule

Silicone .Tubing

上海肯强贸易有限公司
http://www.kq17.com.cn

Содержание Orion 2111LL

Страница 1: ...Thermo Scientific Orion 2111LL Sodium Monitor User Guide 上海肯强贸易有限公司 http www kq17 com cn ...

Страница 2: ...ART AVERAGING Smart CheK SMART STABILITY Stacked Star Navigator 21 Stat Face The Enhanced Lab ThermaSense Triode TRIUMpH Unbreakable pH Universal Access are trademarks of Thermo Fisher Guaranteed Success and The Technical Edge are service marks of Thermo Fisher PerpHecT meters are protected by U S patent 6 168 707 PerpHecT ROSS are protected by U S patent 6 168 707 ORION Series A meters and 900A p...

Страница 3: ...he Instrument II 6 Terminal Assignments II 8 Installation of Reagent Diffusion Tubing II 9 Conditioning Installation of New Sodium Electrode II 13 Installation of ATC probe II 13 Installation of New Reference Electrode II 14 Chapter III Instrument Operation III 1 Description of Basic Controls III 1 Description of Keypad Icons III 2 Use of Setup Mode III 3 Shutdown Start Up Procedure III 30 Chapter...

Страница 4: ... Troubleshooting Matrix VI 11 Error Event Codes VI 14 Resetting the Monitor VI 17 Serial Number and Software Revision VI 18 Service and Repair VI 19 Chapter VII Customer Service VII 1 Notice of Compliance VII 1 Declaration of Conformity VII 2 Terms and Conditions VII 3 Appendix A 1 Mounting Dimensions A 1 ISE Default Values A 2 Specifications A 3 Ordering Information A 7 Recommended Consumables fo...

Страница 5: ... system The system must optimize the fluidic design with the sensing technology to enable very low level ppb measurement of the contaminants as well as measuring across the linear range of the analyzer The Orion 2111LL sodium monitor meets all of the criteria for accurate and dependable sodium monitoring and more The 2111LL incorporates patented Orion technologies including ROSS and ROSS Ultra ele...

Страница 6: ...able low level measurements and wide range with selectable resolution Patented ROSS Ultra reference and ROSS sensing electrodes Superior accuracy and stability over a wider temperature range Patent pending flow cell with air stirring and sample air transport Automatic sample handling and contamination control with no moving parts Patented scrolling marquee Intuitive menu driven digital user interf...

Страница 7: ... The sample then flows into an atmospheric drain Principles of Operation Monitor 1 2 3 4 5 Power 4 20mA Output Air Pump Reference Solution Main Feed Cal Sample Inlet Valve Needle Valve Filter Regulator Valve Safety Drain for DIPA overflow Cal Shutoff Valve 3 way Right Valve RestrictorTubing 3 way Left Valve Diverter Valve Recirculation Block Flowcell Block Measure Level Calibration Level Air Filte...

Страница 8: ...ctuations in sample temperature the 2111LL microprocessor constantly updates temperature corrections from data supplied by the ATC probe From the Nernst equation the theoretical response of a sodium ion selective electrode to a ten fold change in concentration at 25 C is 59 16 mV This is referred to as the electrode slope S Most electrodes however do not exhibit a theoretical slope Therefore the i...

Страница 9: ...e first function is to stop the airflow through the sample and redirect the airflow to the headspace of the flow cell Thus the flow cell is filled without causing air bubble disturbance in the sensing tube The second function ensures proper siphoning operation The combination of these functions provides an accurate volume for calibration At the first step of the DKA calibration the actual concentr...

Страница 10: ...ow cell volume returns to the measurement level After allowing approximately 30 minutes for concentrated calibration solution to be flushed from the system the Orion 2111LL monitor can begin sample measurement again In addition to Double Known Addition DKA the 2111LL also allows the user the ability to perform an offline calibration The offline calibration feature of the Orion 2111LL allows the us...

Страница 11: ... Mounting Hole Keypad Left Air Valve Flow Cell Reservoir Siphon Tube Sensing Tube Flow Cell Block Siphon Drain Re Circulation Tube Measurement Drain Diverter Valve Inlet Valve Reagent Bottle Diffusion Tubing Assembly Reagent Bottle Adapter Assembly Pressure Regulator Air Pump Status Indicators Bypass Valve Inlet Filter Flow Meter Ref Electrode Filling Solution Right Air Valve Restrictor Tube Assem...

Страница 12: ...eter to restrictor tubing Restrictor Tube Assembly Use in conjunction with pressure regulator to lower downstream pressure Reagent Manifold Directs sample flow in and out of reagent bottle assembly Reagent Bottle Adapter Assembly Connects reagent bottle assembly to manifold Diffusion Tubing Assembly Semi permeable tubing through which reagent diffuses into the sample Reagent Bottle Contains water ...

Страница 13: ... measurement and calibration Right Air Valve Adjust airflow to flow cell Controls airflow for mixing sample Left Air Valve Adjust airflow to flow cell Controls airflow for siphon of sample LCD Display Provides digital readouts of concentration temperature millivolts and error codes Keypad Consists of five mode keys four prompt indicator lights two scroll keys and one key for entering data Mode and...

Страница 14: ...trode box ROSS Ultra reference electrode box Standards kit 2 2 oz bottles of standard 1 concentration 19 1 ppm Na 2 2 oz bottles of standard 2 concentration 192 ppm Na 1 2 oz bottle of etching solution 1 Options kit cable glands conduit fitting fuse kit green screw terminal Instruction manual CD 3 Remove the cardboard retaining shell by sliding over the entire mounting board and the monitor 4 Care...

Страница 15: ...er should be mounted as close to the sampling point as possible this ensures the fastest possible response to a changing sample condition Refer to Appendix A 4 Sample Conditions For proper flow cell operations instrument must be installed straight and level upon its mounting location Failure to level may cause poor siphoning in flow cell 1 Prepare mounting holes Carefully lift the analyzer and bol...

Страница 16: ...es Flow rate 40 mL min nominal Pressure 8 100 psig Consult Customer Support for Orion products for details on sample handling if pressure is outside range Temperature Temperature must be between 5 40 C Sodium level Sodium levels are read directly in ppb or ppm when calibrated with Orion standards 1 and 2 Cat No 181140 Sample acidity Sample acidity should not be more than 50 ppm CaCO3 equivalent Fo...

Страница 17: ...disconnect power prior to opening instrument Before connecting the instrument to the main make sure that the voltage lies within either range 85 132V 200 mA or 170 264V 100 mA 50 60 Hz AC Cutting off the power by disconnecting power source will not reset the 2111LL This unit incorporates a non volatile memory and will maintain calibration and settings after power failure Battery power is supplied ...

Страница 18: ...des important information that should be strictly followed when using the unit for your own safety Failure to follow these instructions may result in injuries s Safety warning icons are used in two locations on the 2111LL Faceplate Refer to Figure II 2 Power supply Refer to Figure II 3 Replace fuse only with fuse of same rating Figure II 2 Faceplate Fuse Holder Fuse Figure II 3 Power Supply 上海肯强贸易...

Страница 19: ...screw terminal Phillips head screwdriver 2 mm Blade flat head screwdriver 1 Open the faceplate Loosen the four screws using a Phillips head screwdriver Electronics faceplate will open via the hinge pin connection 2 Remove one or two of the two unused cable glands as required for wiring power cable or auxiliary connections Power cable optional hole locations in Figure II 4 3 Select and install appr...

Страница 20: ... location and Figure II 3 for terminal wiring position 6 Plug to terminal connector into power supply Refer to Figure II 3 7 Select the correct fuse from the fuse kit Install by inserting fuse in fuse holder and secure by twist and lock method Refer to Figure II 3 The fuses are clearly labeled with the appropriate voltages for your system Refer to Figure II 3 Refer to the table below for fuse sele...

Страница 21: ...normally closed 7 Air pump 8 Air pump Key Electrical Notes for the Orion 2111LL Fluid ground is provided through the Orion ATC Probe 30 kΩ Cat No 2100TP Only an Orion ATC probe can be used to provide the fluid ground Do not connect to any of the unused terminals 12 17 21 22 and 25 Leave factory installed jumpers in place on terminals 13 15 16 Be sure to hook shield to underside of PCB to prevent i...

Страница 22: ...r assembly dispose of used diffusion tubing assembly accordingly The new diffusion tubing assembly for use with the Orion 2111LL low level sodium monitor provides superior locking ability to maximize uptime and prevent against costly blowouts The newly designed HDPE locking mechanism is precisely engineered to remain connected under variable temperature conditions and pressure fluctuations The new...

Страница 23: ...ee Figure II 8 2 Carefully thread the O ring seal fitting and ferrule tightly into the reagent bottle adapter to create a suitable seal Fitting can be tightened with a wrench 3 Slide down and seat O ring in top of seal fitting See Figure II 9a 4 Slide twist lock cap down over O ring fitting compressing and rotate 90 degrees to lock in place See Figure II 9b 5 Slide second O ring down and seat in t...

Страница 24: ...f ferrule is at end of PVC pin See Figure II 8 This ferrule may fall off in bag during shipment 2 additional ferrules have been added to the packaged assembly Be careful to remove the additional ferrules from packaging before discarding 1 Secure the diffusion tubing assembly to the base of the reagent bottle adapter assembly by tightening the fittings The fittings must be perpendicular and straigh...

Страница 25: ...ers if necessary 5 Replace all 3 O rings on face of reagent manifold Refer to Figure II 11 6 Slide the reagent bottle adapter assembly over the threaded screw of the reagent manifold Refer to Figure II 11 7 Tighten the thumbnut to secure Figure II 11 Reagent Manifold Reagent Bottle Adapter Assembly 3 O rings for Manifold Manifold Screw O ring for Bottle Adapter Diffusion Tubing Reagent Bottle Reag...

Страница 26: ...h de ionized water Wipe the bulb with clean lab tissue paper Rinse again 4 Insert the sodium electrode into its port in the flow cell cap Refer to Figure II 12 for location 5 Plug the electrode cable marked Sensing into the top of the electrode Be sure to push back black cap to verify a secure connection between male and female pin connection prior to tightening 6 Tighten screw cap connection to c...

Страница 27: ...No 150072 Hold bottle in upright position Check that rubber gasket is properly aligned then connect cap end of tubing assembly to bottle The 1 8 inch tubing should extend into the bottle 6 Hold reservoir bottle above electrode with bottle cap end down Electrode should be horizontal with sidearm pointing up Gently shake electrode to allow any trapped air bubbles to rise into bottle as electrode fil...

Страница 28: ...tput signals s 9 Plug the electrode cable marked Reference into the top of the electrode and tighten the screw cap Be sure to push back black cap to verify a secure connection between male and female pin connection prior to tightening 10 Tighten screw cap connection to cable Note Do not twist cables while tightening connection Twisting may cause damage requiring premature replacement of the cables...

Страница 29: ... left corner Celsius Measured at actual C Main Data Display Middle Line Lower Line Concentration mV conc in ppb 9999 At initial installation if no electrodes are connected Connect electrodes and calibrate Lower line will be disabled at installation Refer to use of setup mode to initiate lower line visibility D Measurement Units Left right side of display ISE concentration ppb ppm Auto ranging ppb ...

Страница 30: ...mV and noise mAmp output values sensor temp and display test Scroll down numbers Scroll down in cal setup mode Used to edit values that can be changed by the operator Use to select available modes by using down arrow 0 9 selectable by digit first digit selectable 0 19 view Log changes between date and data that was logged at that specific time interval Use to view data in calibration measurement s...

Страница 31: ...st parameter used by the customer Press to loop through 14 menu selections Press to select the desired menu selection and enter submenu Press to Toggle between On Off in selected sub menus Scroll and set first digit value from 0 19 Scroll and set remaining digit values from 0 9 Press to scroll right to set each digit 4 digits total Press to exit current screen and return to previous screen Press t...

Страница 32: ...re activated System prompts user to enter system password Marquee ENTER PASSWORD Main display top PASS Main display bottom 0000 flashing Correct password allows user to enter setup mode for custom programming options Incorrect password Password incorrect or not entered correctly System password Marquee SYSTEM PASS INCORRECT Main display E035 Calibration password Marquee CAL PASS INCORRECT Main dis...

Страница 33: ...et in accordance to local time zone If the battery is removed the system will show 01 01 2000 Set instrument time Enter hour and minutes Default time System will continue to keep date and time due to battery back up Customer must set in accordance to local time zone If the battery is removed the system will show 00 01 Set data logging interval for Measure Log Calibration and Error logs are accesse...

Страница 34: ...isplay Auto system will toggle brightness in response to ambient light source On backlit display always on Off backlit display always off Default auto Sets significant digits mV and concentration units displayed when in measure mode Set number of significant digits displayed Toggle between 2 3 and 4 significant digits Default significant digits 3 Enables 2nd LCD line mV values to display Toggle be...

Страница 35: ...ne or hold status RLY 3 options Off Cal Hold Err Default all alarms 1 2 3 are set to off Set either of 2 analog current outputs Sout Tout set scale values as linear or logarithmic curves for concentration Analog outputs Toggle between 4 20 mA or 0 20 mA current signals The outputs share a common return but are isolated from the main circuitry of the monitor Default output current 4 20 mA Sout dedi...

Страница 36: ...ut relays and the air pump s mAmp output 4 20 or 0 20 Sout LO and HI values Tout LO and HI values Relays RLY 1 Toggle On Off RLY 2 Toggle On Off RLY 3 Toggle On Off Air pump AIR Toggle On Off Set calibration frequency in hours h High limit 19999 h Low limit 00000 h Default 720 hours User selectable values for customized Double Known Addition DKA Programmable for volume mL of flow cell concentratio...

Страница 37: ...lay top line bottom line Notes SETUP Press to enter setup mode Setup appears as mode indicator mode window Hold displayed while in Setup mode System will enter setup mode at last used menu PASS DATE TIME LOG HOLD RSET DISP MEAS TEMP ALRM mAMP TEST CAL DKA SEL SCrn Press to loop through 14 menu selections Press to select the desired menu selection and enter submenu to customize setup parameters 上海肯...

Страница 38: ... PASSWORD PASS Flashing digit will change Press to set the values of remaining digits for system password SET UP NEW SYSTEM PASSWORD PASS Flashing digit will change Press to accept system password and advance to next screen to set calibration password 0 0 0 0 SET UP NEW CALIBRATION PASSWORD PASS All digits flashing Press to set first digit SET UP NEW CALIBRATION PASSWORD PASS Flashing digit will c...

Страница 39: ...ER DATE DD MM YYYY EUrO Month Day US Day Month EUrO 2 0 Year All digits flashing Press to set first digit ENTER DATE MM DD YYYY US ENTER DATE DD MM YYYY EUrO Month Day US Day Month EUrO 2 0 Year Flashing digit will change Press to move to set each digit ENTER DATE MM DD YYYY US ENTER DATE DD MM YYYY EUrO Month Day US Day Month EUrO 2 0 Year Flashing digit will change Press to set values of remaini...

Страница 40: ...HOUR MINUTE Hour Minute All digits flashing Press to set first digit for hour ENTER TIME HOUR MINUTE Hour Minute Flashing digit will change Set in 24 hour time format Press to move to set each digit ENTER TIME HOUR MINUTE Hour Minute Flashing digit will change Press to set values of remaining digits for hour and minutes ENTER TIME HOUR MINUTE Hour Minute Flashing digit will change Press to return ...

Страница 41: ...g Press to set first digit SET LOG TIME IN HOUR MINUTES LOg Flashing digit will change To disable the log enter 0000 for log interval The minimum log interval is 5 minutes The maximum log interval is 99 hours and 59 minutes Press to move to set each digit SET LOG TIME IN HOUR MINUTES LOg Flashing digit will change Press to set values of remaining digits for log interval SET LOG TIME IN HOUR MINUTE...

Страница 42: ...hold time 0 0 3 0 ENTER HOLD TIME HOUR MINUTE HOLd All digits flashing Press to set first digit ENTER HOLD TIME HOUR MINUTE HOLd Flashing digit will change Press to move to set each digit ENTER HOLD TIME HOUR MINUTE HOLd Flashing digit will change Press to set values of remaining digits for hold time ENTER HOLD TIME HOUR MINUTE HOLd Flashing digit will change Press to return user to main setup men...

Страница 43: ...SEt To Reset Press then Press then Press When reset is complete system returns to measure mode User will need to re enter the setup menu to continue to program setup parameters Press to return to the setup menu This command resets all previously set parameters to factory default values Use this command only to set the device to original factory setup values PRESS TEST VIEW ENTER TO RESET rSEt To A...

Страница 44: ...rquee Scrolling Main Display top line bottom line Notes DISP DISP flashing SEL SCrn Press to control the automatic lighting options for backlit display AUTO BACKLIGHT LItE AUTO Press to scroll through AUtO On or OFF settings BACKLIGHT LItE AUtO On or OFF flashing Press to return user to main setup menu for DISP submenu DISP Flashing SEL SCrn Press to scroll to next menu 上海肯强贸易有限公司 http www kq17 co...

Страница 45: ... SIGNIFICANT DIGITS SIg 2 3 or 4 Press to select and advance to next screen to enable second LCD line mV value on measurement screen OFF SHOW mV ON LINE 2 OFF Flashing Press to toggle between OFF and On options SHOW mV ON LINE 2 On or OFF Flashing Press to select and return to next screen to set concentration units for sodium ISE measurements AUTO SELECT ISE UNIT UnIt AUtO Flashing Press to scroll...

Страница 46: ...tment 0 0 C ADJUST TEMPERATURE AdJ C Flashing Press to set first digit to adjust temperature ADJUST TEMPERATURE AdJ C Flashing digit will change The maximum temperature adjustment is 1 C Press to move to set next digit Press to set next digit ADJUST TEMPERATURE AdJ C Flashing digit will change Press to set a positive or negative temperature adjustment ADJUST TEMPERATURE AdJ C Press to return user ...

Страница 47: ... option is selected the system will proceed to rLY2 100 ppb To set HI or LO values for rLY1 Press to move decimal and ppm ppb Press to set digit values Press to move to set next digit ENTER VALUE rLY1 concentration Press to accept value and advance to next screen for rLY2 OFF SELECT ALARM 2 HIGH LOW OR OFF rLY2 OFF Flashing Press to set HI LO or OFF for rLY2 SELECT ALARM 2 HIGH LOW OR OFF rLY2 HI ...

Страница 48: ...er Action Marquee Scrolling Main Display top line bottom line Notes ALARM cont d OFF SELECT CALIBRATION HOLD ERROR OR OFF rLY3 OFF Flashing Press to set CAL HOLD Err or OFF for rLY3 SELECT CALIBRATION HOLD ERROR OR OFF rLY3 CAL HOLD Err or OFF Flashing Press to return user to main setup menu for ALRM submenu ALRM Flashing SEL SCrn Press to scroll to next menu 上海肯强贸易有限公司 http www kq17 com cn ...

Страница 49: ...Flashing The default scale values the same for both LOg and LIn Press to set SOUt low LO limit 1 0 ppb mA S ENSOR OUTPUT LOW VALUE LO ppb Flashing Press to move decimal and ppm ppb Press to set digit values mA SENSOR OUTPUT LOW VALUE LO Flashing digit will change Press to move to set each digit Press to set values of remaining digits for SOUt low value mA SENSOR OUTPUT LOW VALUE LO Flashing digit ...

Страница 50: ...W VALUE LO C Flashing To set tOUt low LO limit value Press to set digit values Press arrow to move to set next digit Press to set a positive or negative temperature value mA TEMP OUTPUT LOW VALUE LO C Flashing digit will change Press to accept values and advance to next screen to set tOUt high value 45 C mA TEMP OUTPUT HIGH VALUE HI C Flashing To set tOUt high HI limit value Press to set digit val...

Страница 51: ...Ir setting Select 4 20 SELECT mA OR RELAY tESt 4 20 Flashing Press to test 4 20 outputs SELECT TEMP OR SENSOR OUTPUT tOUt or SOUt Flashing Press to toggle between SOUt and tOUt Select tOUt SELECT TEMP OR SENSOR OUTPUT tOUt Flashing Press for tOUt low value LO Actual LO Value Displayed mA TEMP OUTPUT LOW VALUE LO C 4 0 mA are sourced at output terminal 11 Press for tOUt high value HI Actual HI Valu...

Страница 52: ...ng Press to toggle between SOUt and tOUt Select SOUt SELECT TEMP OR SENSOR OUTPUT SOUt Flashing Press for SOUt low value LO Actual LO Value Displayed mA SENSOR OUTPUT LOW VALUE LO C 4 0 mA are sourced at output terminal 9 Press for SOUt high value HI Actual HI Value Displayed mA SENSOR OUTPUT HIGH VALUE HI C 20 0 mA are sourced at output terminal 9 Press to return user to main setup menu for TEST ...

Страница 53: ...AY 2 rLY 2 On or OFF Relay contact according to screen indication Press to accept rLY2 and move to rLY3 status Actual rLY 3 Status Press to toggle rLY3 setting On or OFF USE ARROWS TO TOGGLE RELAY 3 rLY 3 On or Off Relay contact according to screen indication Press to accept rLY3 and advance to air pump setting AIr Actual AIr Status Press to toggle air pump On or OFF USE ARROWS TO TOGGLE AIR PUMP ...

Страница 54: ... Main Display top line bottom line Notes TEST cont d Press to test air pump Actual AIr Status USE ARROWS TO TOGGLE AIR PUMP STATE AIr Actual Status Press to toggle AIr setting On or OFF USE ARROWS TO TOGGLE AIR PUMP STATE AIr On or OFF Relay contact according to screen indicator Press to return user to main setup menu for TEST submenu TEST Flashing SEL SCrn Press to scroll to next menu 上海肯强贸易有限公司 ...

Страница 55: ...y in hours h 720 ENTER CALIBRATION FREQUENCY IN HOURS CAL Flashing To disable alarm set value to 000 Press to set calibration frequency value ENTER CALIBRATION FREQUENCY IN HOURS CAL Flashing digit will change Press to move to set each digit Press to set values of remaining digits for calibration frequency value ENTER CALIBRATION FREQUENCY IN HOURS CAL Flashing digit will change Press to return us...

Страница 56: ...t will change Press to move to set each digit Press to set values of remaining digits for flow cell volume mL ENTER FLOW CELL VOLUME IN mL FCEL Flashing digit will change Press to accept values and advance to next screen to set concentration for custom standards 19 1 ppm SET STD 1 CONCENTRATION CONC Flashing To set value for Standard 1 concentration ppm or ppb Press to set decimal and ppm ppb Pres...

Страница 57: ...ue for Standard 2 concentration ppm or ppb Press to move decimal and ppm ppb Press to set values of digits Press to move to set each digit SET STD 2 CONCENTRATION CONC Flashing digit will change Press to accept values and advance to next screen to set volume for Standard 2 0 10 mL SET STD 2 VOLUME IN mL Std 2 Flashing To set value for Standard 2 volume mL Press to set values of digits Press to mov...

Страница 58: ...n marquis window Press to access test menu Press to scroll through submenu until AIr appears in main display Press Press to toggle between On OFF setting for air pump power Note Changing air pump On or OFF will be indicated by a click sound Press to accept the setting and returns operator to test sub menu Press to return to measure mode 1 Shut off sample flow prior to the analyzer inlet Refer to C...

Страница 59: ...ce records Re install bottle on monitor 2 Etch sodium electrode Rinse with de ionized water and carefully re install on monitor Refer to Chapter II Conditioning Installation of New Sodium Electrode 3 Restore sample flow to analyzer If necessary adjust pressure and flow rate through monitor to normal range of 40 mL min 4 Remove protective end cap from reference electrode Reinstall electrode on moni...

Страница 60: ... valves used when starting calibrating the instrument Calibration shut off valve Left air valve Right air valve Diverter valve Each 2111LL is shipped with a Valve Reference Guide as a self adhesive tool to mount either to the back PVC panel or on the inside of the 2111LL enclosure Cat No 2111EN Using the Valve Reference Guide Measure Mode Turn valves to black arrow position Calibrate Mode Turn val...

Страница 61: ...use The electronics need not be turned on at this time Refer to Chapter IV Rinsing the Flow Cell For accurate volume displacement install ATC sensing and reference electrodes in respective flow cell cap ports Refer to Chapter II Installation of New Sodium Electrode Reference Electrode and ATC Probe Close calibration port When rinsing before a low level standard calibration be sure to rinse off ins...

Страница 62: ...pass valve by turning counterclockwise see detail C Check for appropriate sample flow Adjust pressure regulator if required See step 4 4 Adjust the knob on the regulator see detail E so that ball of flow meter reads 40 mL min see detail D Pulling the knob will unlock the setting allowing adjustment Turning the knob clockwise will increase flow Pushing the know back in will lock into position 5 Tur...

Страница 63: ...easurement and calibration modes Successful air regulation requires proper air pump operation 1 Right air valve is in Mix position arrow pointing down Refer to Figure IV 4 C 2 Left air valve is in Siphon position arrow pointing down Refer to Figure IV 4 B System now maintains a consistent pressure in flow cell to initiate siphon during flushing sequence 3 At this point refer to Chapter IV Rinsing ...

Страница 64: ... ppb Proper pipette technique is crucial to calibration If operator is not familiar with pipette equipment or technique refer to Appendix A 11 Pipette Operation Do not touch pipette tip with bare fingers Risk of sodium contamination is possible Use powder free gloves to prevent contamination When using pipette to inject standards during calibration use fresh pipette tip for each standard concentra...

Страница 65: ...tart calibration If calibration password is activated user must scroll in digits 0 9 using or to set digits and to move selected digit Press to accept password ENTER PASSWORD PASS 0000 CAL appears as mode 3 DKA or OFFL Flashing CAL tYPE 4 Press to select DKA DKA Flashing CAL tYPE 5 Press 6 Follow sensor etching procedure Chapter II Conditioning Installation of New Sodium Electrode ETCH SENSOR PRES...

Страница 66: ...ht Air Valve to calibrate position Arrow pointing up TURN LEFT AND RIGHT VALVES UP PRESS ENTER Alr 11 Press 12 When liquid level in the flow cell has risen above the siphon tube and begins to drop turn the Calibration Shut Off Valve above flow meter to calibrate position WHEN LIQUID LEVEL BEGINS TO DROP TURN SHUTOFF VALVE RIGHT PRESS ENTER FLO OFF 13 Press 14 Turn Left Air Valve to siphon position...

Страница 67: ...not reached a timeout occurs Error E041 is issued Jump to step Error E041 20 Add Std 1 through cal port ADD STD1 PRESS ENTER Add Std1 21 Press 22 Wait 5 minutes MEASURING STD1 CIRCULATING WAIT 5 MINUTES Actual readings in ppb mV flashing System circulates sample Minutes will be counted down on Marquee 23 Wait 0 5 minutes AWAITING DATA STABILITY Actual readings in ppb mV flashing System continuousl...

Страница 68: ...ollow stage 29 If there is a slope E0 or other cal data related error jump to appropriate error code 29 Press to accept the new slope and Eo values or Press to abort calibration The values will not be stored The last saved values for calibration prior to the aborted values will be used in measurement mode NEW CALIBRATION SLOPE AND E0 PRESS ENTER TO ACCEPT OR PRESS EXIT TO ABORT WITHOUT SAVING Calc...

Страница 69: ...ALVE DOWN TURN DIVERTER VALVE SO ARROW POINTS LEFT TURN SHUFOFF VALVE UP CLOSE CAL PORT PRESS ENTER FLO On Some system software revisions will display the combined steps shown in Stage 30 For all other systems refer to Stages 30a 30b 30c 30d and 30e 30a Turn Left Air Valve to siphon position Arrow pointing down Turn Right Air Valve to mix position Arrow pointing down For Correct position in measur...

Страница 70: ...the user two options when is pressed at any step during the calibration Go to Exit 2 Exit 2 Decide whether or not you really want to exit the calibration process and lose the new slope and E0 To Abort calibration Follow step Exit 3 User enters into the measure mode User must refer to stage 30 for proper air and fluid flow for measurement mode To Continue calibration If is pressed system will go ba...

Страница 71: ...ed before timeout If is pressed system will continue from step where stability timed out If is pressed refer to Exit 1 or Exit 4 depending on the system software revision Calibration Error Error 42 Review Marquee text to understand the failure that occurred INVALID NEGATIVE SLOPE PRESS ENTER TO ABORT CALIBRATION E042 Invalid slope continue at Exit 3 Error 109 Review Marquee text to understand the ...

Страница 72: ...andard 1 and standard 2 values and the volumes to be used Let VC Flow cell volume Fixed 190 0 mL C1 Standard 1 concentration Default 19 1 ppm C2 Standard 2 concentration Default 192 ppm V1 Volume of standard 1 added Default 0 1 mL V2 Volume of standard 2 added Default 0 1 mL dC1 Concentration change due to the first addition dC2 Concentration change due to the second addition dC1 C1 x V1 V1 VC dC2...

Страница 73: ...dure 2 Fill flow cell to calibration level V0 190 mL 3 Note concentration displayed when reading is reasonably stable C0 4 Add standard 1 volume V1 with concentration C1 5 When reading is reasonably stable note concentration CS 6 The noted value should be within 10 of the calculated value according to CS C0 x V0 C1 x V1 V0 V1 C1 should be sodium concentration actually in the standard bottle For ex...

Страница 74: ...ding Actual readings in concentration mV 2 Press to start calibration If calibration password is activated user must scroll in digits 0 9 using to set digits and to move selected digit Press to accept password ENTER PASSWORD PASS 0000 CAL appears as Mode 3 DKA or OFFL Flashing CAL tYPE 4 Press arrows to select OFFL OFFL Flashing CAL tYPE 5 Press HOLD CAL appears as mode 6 Wait 0 5 minutes AWAITING...

Страница 75: ...R PASSWORD PASS 0000 CAL appears as Mode 9 DKA or OFFL Flashing CAL tYPE 10 Press to select OFFL OFFL Flashing CAL tYPE 11 Press HOLD CAL appears as mode 12 OFFLINE CAL CONC Flashing 13 Adjust the displayed value to the QC value obtained from laboratory analysis Use to set decimal and ppm ppb Use to set the first digit Use to move to set each digit Use to set the values of remaining digits OFFLINE...

Страница 76: ... of reagent and date when replaced Tag each electrode cable with installation date of electrode 1 Check that sample flow rate is between 35 and 45 mL min To alter flow rate pull out locking knob of pressure regulator then rotate black knob to increase clockwise or decrease counterclockwise sample flow Push in to lock rate if desired 2 Inspect unit for leakage Diffusion tubing leakage is indicated ...

Страница 77: ...es calibration Refer to Chapter IV Calibration Calibration intervals can be programmed using the setup mode This will prompt the user to recalibrate after a specific amount of time has passed Refer to Chapter III Use of Setup Mode Refer to Chapter II Installation of New Reference Electrode Reference electrode filling solution is meant to be a several month supply Therefore if reservoir is less tha...

Страница 78: ...ximately 75 pound inch in torque 9 Turn on sample flow by 1 4 turn of inlet valve to the left 10 Check for leaks Warning Replacement of DIPA reagent is dependent on operating conditions and usage Replacement may occur as long as 60 days from installation Be sure to monitor the DIPA levels weekly to assess proper replacement schedule DIPA is hazardous Use protective glasses and gloves Refer to bott...

Страница 79: ...quire bottle change out sooner about 6 weeks We generally change reagents when level is less than 1 inch remaining The reagent bottle can be used almost to dryness less than 50 mL remaining if readings are not extremely low 0 5 ppb It is imperative that bottle doesn t go completely dry or the system will be compromised Replacement of reagent manifold face O rings Refer to Figure V 2 Remove reagent...

Страница 80: ...stop sample flow to monitor Refer to Chapter III Shutdown Procedure 2 Remove electrodes and ATC from flow cell cap 3 Drain flow cell completely 4 Remove flow cell cap Replace large O ring in flow cell cap 5 Pull flow cell chamber straight up to remove from flow cell base Be careful not to twist The flow cell base has a pin to hold the flow cell chamber in the correct position 6 Rinse flow cell cha...

Страница 81: ...lve to the right 2 Loosen restrictor tube fitting connection from top of calibration shut off valve 3 Loosen restrictor tube fitting from reagent manifold 4 Pull out the restrictor tube assembly at each end 5 Unscrew clip holding restrictor to panel 6 Replace with new restrictor tubing assembly 7 Be sure all fittings are secure to prevent leaks 8 Open sample inlet valve to start sample flow throug...

Страница 82: ...ode Menu User Action Marquee Scrolling Main Display top line bottom line Notes Diagnostics Press to enter diagnostics mode System will enter diagnostics mode at calibration log menu Press to step through the menu items CALIBRATION SLOPE AND E0 ERROR LIST PRESS VIEW SELECT TIME DATE TO VIEW MEASUREMENT LOG SELECT TIME DATE TO VIEW STATUS LOG SOFTWARE REV NUMBER SERIAL NUMBER MODEL NUMBER MEASURE mV...

Страница 83: ...te and Time screen use to view up to the last five calibrations Calibration Log Menu User Action Marquee Scrolling Main Display top line bottom line Notes Press Calibration Log CALIBRATION SLOPE AND E0 Slope E0 DIAGNOSTICS appears as mode Press to display the calibration time and date LAST CALIBRATION TIME DATE HH MM MM DD or DD MM In the calibration time and date display press to scroll through t...

Страница 84: ...m line shows the number of error codes 1 5 indicates that one of five error codes is being displayed Press to scroll through the error list Press to display a description of each error code on the Marquee Error List Menu User Action Marquee Scrolling Main Display top line bottom line Notes Error List ERROR LIST PRESS VIEW E Press to display description of error code on Marquee ACTUAL DESCRIPTION O...

Страница 85: ...ess to scroll through the log entries Measurement Log Menu User Action Marquee Scrolling Main Display top line bottom line Notes Measurement Log SELECT TIME DATE TO VIEW MEASUREMENT LOG HH MM MM DD or DD MM Press to scroll through the log entries SELECT TIME DATE TO VIEW MEASUREMENT LOG HH MM MM DD or DD MM Press to toggle between the measurement log and the data and time display Temperature for l...

Страница 86: ...ftware revision numbers of the two processors Status Log Software Revision Menu User Action Marquee Scrolling Main Display top line bottom line Notes Status Log SELECT TIME DATE TO VIEW STATUS LOG HH MM MM DD or DD MM Press to scroll through the log entries SELECT TIME DATE TO VIEW STATUS LOG HH MM MM DD or DD MM Press to toggle between the log code and the data and time PRESS UP DOWN KEY TO VIEW ...

Страница 87: ...measurement Displays current mA values for sensor and temperature outputs Electronics Serial Number Model Number mV and Noise Measurements mA Output Values Menu User Action Marquee Scrolling Main Display top line bottom line Notes Electronics Serial Number SERIAL NUMBER Press Model Number MODEL NUMBER Press mV and Noise Measurements MEASURE mV AND NOISE Current mV measurement and noise Press mA Ou...

Страница 88: ...re off and press 5 The system will show a counting number pattern on both lines of the main display 6 Verify that the display segments are functional and press to proceed to the keypad test Display Test Menu User Action Marquee Scrolling Main Display top line bottom line Notes Display Test PRESS ENTER FOR DISPLAY TEST dISP tESt Press Verify that all the display segments are on and that the LED col...

Страница 89: ...first key is pressed Error E033 will be displayed if a new key is not pressed within 10 seconds Keypad Test Menu User Action Marquee Scrolling Main Display top line bottom line Notes Keypad Test KEYPAD TEST PRESS ALL KEYS ONE AT A TIME 0 Press all keys one at a time in any order KEYPAD TEST PRESS ALL KEYS ONE AT A TIME Display will show numbers 1 through 8 as keys are pressed After the first key i...

Страница 90: ... decade for monovalent ions as sodium Knowing electrode and instrument parameters like offset potential slope etc allows testing of various instruments by applying a known mV voltage Input Signal Expected Reading 0 5 mV 0 1 0 mV 0 5 mV to 0 5 mV 1000 mV 1001 5 mV to 998 5 mV 1000 mV 998 5 mV to 1001 5 mV Standards contaminated or incorrectly made Verify fresh standards Standard 1 and standard 2 in...

Страница 91: ...the Monitor Improper pipette technique Refer to section Appendix A 11 Pipette Operation and Technique Background concentration too high for standards used Reference and sensing cables interchanged verify wiring of cable connections to terminal strip Refer to Chapter II Wiring the Instrument Check the connection of the cable markers for the corresponding electrode Cable markers are the white tape a...

Страница 92: ...varying Perform span check If span check passes monitor is okay Refer to Chapter IV Blocked reference junction Make sure electrolyte bottle is vented Check tubing to electrode for obstruction Refer to Chapter II Reference electrode Missing or not using correct filling solution Cat No 150072 Sodium electrode response Etch sodium electrode Install new sodium electrode Refer to Chapter II Temperature...

Страница 93: ...ue Use correct pipette technique Refer to Appendix Reagent diluted or contaminated Replace DIPA reagent Refer to Chapter II Flow cell contaminated Rinse flow cell with de ionized water Flush flow cell overnight with flow at calibration liquid level Refer to Chapter IV Temperature probe failure Disconnect ATC Display should read default 25 C E101 Replace if necessary Electronics failure Bad setup T...

Страница 94: ...new probes Refer to Chapter II Electronics failure Bad setup Needs calibration Try resetting the monitor Refer to Chapter VI Default Power loss while back up battery was not fully charged Allow battery to charge overnight Recalibrate and reprogram Refer to Chapter IV Battery failure Contact Customer Support for Orion products at 1 800 225 1480 Electronics failure Try resetting the monitor Refer to...

Страница 95: ...ration complete R400 MEAS MODE Measurement mode entered S600 SETUP MODE Setup mode entered E028 POWER FAIL Brown out or power failure and system has stopped processing Verify custom settings E033 KEYPAD FAILURE User did not press the keys during a diagnostic mode keypad test or keypad broken Repeat diagnostic mode keypad test E034 CAL PASS INCORRECT User entered incorrect calibration password Veri...

Страница 96: ...lue Verify customer selectable Tout low limit value in setup menu System Error Codes Red LED E001 HARDWARE FAULT System Error Contact Customer Support for Orion products 1 800 225 1480 E002 HARDWARE FAULT System Error Contact Customer Support for Orion products 1 800 225 1480 E005 HARDWARE FAULT System Error Contact Customer Support for Orion products 1 800 225 1480 E006 HARDWARE FAULT System Erro...

Страница 97: ...pe is more than 63 mV decade or less than 45 mV decade or the calibration standards may have been interchanged Recalibrate the instrument using fresh standards Recalibrate in the correct sequence using standard 1 then standard 2 E113 CAL OVERDUE Calibration is overdue by more than 50 of the user specified time interval Recalibrate the instrument E121 TEMP BROKEN Temperature sensor on channel 1 bro...

Страница 98: ...ation and password protection settings for setup and calibration The instrument will reset setup parameters to factory default settings User Action Marquee Scrolling Main Display top line bottom line Notes Press to enter setup mode Last menu used in setup mode SEL SCrn SETUP appears as mode Press until RSET appears in the Marquee RSET Flashing SEL SCrn Press PRESS TEST VIEW ENTER TO RESET rSEt Pre...

Страница 99: ...ttings and calibrations are preserved and instrument returns to the measure mode Actual values for concentration and temperature will be displayed if electrodes are properly installed If system does not reset contact Call Customer Support for Orion products at 1 800 225 1480 for assistance In the event you require technical assistance please have the serial number available when calling for assist...

Страница 100: ...Extends the features of the standard One Year Product Warranty for a second or third year Provides access to the manufacturer s technical experts at Thermo Scientific Orion Support Call Center 800 225 1480 Monday Friday 8 00 AM 5 00 PM EST After telephone consultation we will send you the required parts for installation by your on site technician With in house resources at a premium many organizat...

Страница 101: ...tific Orion products to provide you with an efficient and quality installation and the start up support you need to be up and running quickly Our service representatives are highly trained experienced and certified for your product and will be there to make sure that your instrumentation delivers to specifications This is a one day service engineer on site visit to your facility for remedial servi...

Страница 102: ... interference when operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measure may be required to correct the interference This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interf...

Страница 103: ... EN61010 1 2001 Safety requirements for electrical equipment for measurement control and laboratory use general requirements EMC Electromagnetic Compatibility EMC 89 336 EEC EN 61326 1997 A1 1998 A2 2001 Electrical equipment for measurement control and laboratory use EMC requirements Environmental IP66 These products have been manufactured in compliance with the provisions of the relevant Thermo F...

Страница 104: ...requirements may vary Contact your international coordinator for details For customers in the U S rush orders received before 12 pm Eastern Time will be shipped the same day Rush orders received after 12 Noon Eastern Time will be shipped the next business day For customers and dealers in Canada rush orders will be shipped within 2 business days For customers and dealers outside the U S and Canada ...

Страница 105: ...d within 30 days of shipment from manufacturer Older items 9 digit parts and discontinued items cannot be returned for credit Manufacturer must be notified within 30 days of receipt of invoice of any item or billing discrepancies All substantiated claims will be remedied by a credit memo and a new order placed for short shipment Any shipment discrepancy claimed after 30 days of invoice date will n...

Страница 106: ...he purchase price of the unit The warranty described is exclusive and in lieu of all other warranties whether statutory express or implied including but not limited to any implied warranty of merchantability or fitness for a particular purpose and all warranties arising from the course of dealing or usage of trade The buyer s sole and exclusive remedy is for repair or replacement of the non confor...

Страница 107: ...mo Scientific Orion 2111LL Sodium Monitor User Guide ROSS and the COIL tradedress are trademarks of Thermo Fisher Scientific Inc US Patent 6 793 787 Appendix Mounting Dimensions 上海肯强贸易有限公司 http www kq17 com cn ...

Страница 108: ... 130 mV High limit of E0 10 mV Slope default 59 15 mV dec Slope range 45 0 mV dec to 62 0 mV dec CISO 115 ppm 115000 ppb Volume of flow cell fixed 190 mL Concentration of standard 1 added during cal 19 1 ppm Volume of standard 1 added during cal 0 1 mL Concentration of standard 2 added during cal 192 ppm Volume of standard 2 added during cal 0 1 mL ISE Default Values 上海肯强贸易有限公司 http www kq17 com c...

Страница 109: ... 5 or 0 01 ppb whichever is greater Response time 95 with in 2 minutes with freshly etched electrode Reach 95 of final reading within 2 minutes of injecting a standard solution or 2 minutes max for time from 5 to 95 of measured change following dynamic addition of a standard solution Units displayed ppb ppm Temperature compensation Automatic Range 1999 9 mV Resolution 0 1 mV Relative accuracy 0 5 ...

Страница 110: ...x 76 mm 2 1 8 in x 3 in Marquee Temperature user prompts Middle line Concentration error codes Lower line mV selectable Text display Scrolling marquee for English language instruction for setup calibration and diagnostics Calibration DKA calibration Yes DKA calibration points 3 points Off line calibration Yes Off line calibration points 1 point Pre programmed standard values Yes Custom calibration...

Страница 111: ...Log linear output options Yes user selectable Alarm Outputs Number of relay outputs 3 Max relay load 250 VAC 5A 30 VDC 5A resistive load only Min value alarm Yes Max value alarm Yes Error alarm Yes Offline cal alarm Yes Programmable min max values Yes Meter features Non volatile memory Yes Battery backup replaceable Yes Data logging Yes Software Features Self test diagnostics Yes Real time clock Y...

Страница 112: ...or 65 x 45 x 27 cm 26 x 17 x 11 in Fits on 1811EL panel mounting hardware footprint Weight 22 7 kg 50 lbs Physical size of electronics module Size mm 144 x 144 x 187 in 5 67 x 5 67 x 7 36 Weight kg 1 7 lbs 3 75 Power input 85 132 V 200 mA or 170 264 V 100 mA 50 60 Hz AC Over voltage category II Environmental Operating Conditions Waterproof enclosure IP66 NEMA 4X Overvoltage category II Ambient tem...

Страница 113: ...z bottle of etch solution 181113 Sodium electrode etch solution 1 x 2 oz bottle 210048 ROSS sodium electrode with screw cap 210058 ROSS Ultra reference electrode with screw cap 150072 5 x 2 oz bottles of reference electrode filling solution 2111EK Electrode kit with 1 sodium electrode 210048 and 1 reference electrode 210058 180029 Electronic test kit for troubleshooting 1500 1700 1800 2100 series ...

Страница 114: ...with 18GRAB 18GTBK QC sampler replacement tubing kit for use with 18GRAB 224329 A01 Wall adapter 115 V for use with 18GRAB 224330 A01 Wall adapter 230 V for use with 18GRAB 180300 Steam sample conditioner for high pressure steam samples for use with 1800 2100 series monitors 15DC15 Dynamic calibrator complete with syringe pump and syringe kits 150096 and 180096 and mounting bracket 115 V 15DC20 Dy...

Страница 115: ...C 2 x 1 meter electrode cables for 210048 and 210058 2111PA Air pump assembly 2111RVA Right air valve 2111LVA Left air valve 2111AF Air filter 2111VC Check valve 2111TG Tygon tubing 4 feet 2111BP Steel back panel 2111EP 2111LL electronics faceplate 2111PS Power supply assembly 2111FK115 Fuse kit assembly 115V 2111FK230 Fuse kit assembly 230V 2111FC Flow cell assembly complete 2111CA Flow cell cap ...

Страница 116: ... x 2 oz bottle standard 2 192 ppm Na standard and 1 x 2 oz bottle of etch solution 1 Cat No Description Quantity 2111RG Regulator assembly 1 2111PA Air pump assembly 1 2111FM Flow meter assembly 1 2111EK Electrode kit with 1 210048 sodium electrode and 1 210058 reference electrode 1 2111MK Maintenance kit includes 2 electrode cables 1 diffusion tubing kit 1 sample filter 1 O ring kit 1 check valve...

Страница 117: ...ing mechanism To release the tip point the pipette at suitable waste receptacle and press the tip ejector with your thumb You can attach the pipette shelf hanger on a counter pipette stand or anywhere where you want to hang your pipette Clean the area where you plan to attach the shelf hanger Apply two stickers to the underside of the shelf hanger Press the shelf hanger firmly into place on a shel...

Страница 118: ...ion that you will be pipetting Hold the pipette in an upright position while aspirating liquid The grippy should rest on your index finger Make sure that the tips pipette and solution are at the same temperature Fill a clean reagent reservoir with the liquid to be dispensed 1 Depress the push button to the first stop 2 Dip the tip under the surface of the liquid in the reservoir to a depth of abou...

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