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1 INTRODUCTION 

 

1.1 Description 

of 

Unit 

Thank you for purchasing the ¼ DIN Alpha pH1000 pH/ORP process controller/transmitter. 
This unit is used for measuring either pH or ORP parameter one at a time, and the 
operational mode is switchable from the menu. You can use this unit to measure pH or ORP 
with limit control.  This controller has many user-friendly and safety features which include: 
 

 

Menu-driven program

 that simplifies set-up 

 

Built-in non-volatile memory backup

 to ensure that calibration and other information 

are not erased if power supply fails 

 

Press-button two-point calibration

 and 

electrode offset adjustment

 from the 

keypad 

 

Automatic temperature compensation (ATC)

  

 

Manual temperature compensation

 setting without the ATC probe, with independent 

setting for calibration and process temperature 

 

0 to 2000 second 

time delay adjustment

 on all relays – minimise false alarms  

 Separately 

adjustable 

high and low set point hysteresis

 (dead bands) prevent 

chattering of relays around the set points 

 

Asymmetrical/symmetrical

 input for pH/ORP operation 

 

Three control modes

: limit, proportional pulse length or proportional pulse frequency 

 

Large dual display LCD

 for easy reading with clear multiple annunciators, alarm 

status, operational and error messages  

 

Two switching contacts as set-point triggering relays

 

 

A third relay that can be be set up to perform either 

Alarm

 or 

Wash function

 

 

When set to work as 

Alarm relay

, alerts you when readings exceed set-point limits after 

a set time buffer, and if the Pt100/Pt1000 wires are broken or disconnected during the 
ATC function 

 

Programmable duration and frequency

 in the Wash mode 

 

Hold

 function freezes output current 

(0/4…20mA)

 and releases control relays 

 

LED indicators

 signal control activities to monitor controller status from a distance 

 

Protection against electromagnetic interference

 – galvanically isolated 0/4…20mA 

output provides safety for datalogging and control purposes 

 

Choice of 7 buffers from 

USA or NIST standards

 

 

1.2 Applications 

Use this controller in panel mounted enclosures for applications such as water treatment and 
monitoring, galvanic-decontamination, chemical processing food processing, clean or waste 
water control and neutralisation process. 

Содержание Alpha pH 1000

Страница 1: ...Alpha pH 1000 Controller Transmitter pH ORP...

Страница 2: ...k ROSS Resolution SAOB SMART AVERAGING Smart CheK SMART STABILITY Stacked Star Navigator 21 Stat Face The Enhanced Lab ThermaSense Triode TRIUMpH Unbreakable pH Universal Access are trademarks of Ther...

Страница 3: ...applications of the Alpha pH1000 pH ORP process controller transmitter If you have doubts in the use of the instrument please do not hesitate to contact the nearest Authorized Distributor Thermo Scien...

Страница 4: ...tion of the instrument Before powering up the unit make sure that power source is connected to it as specified on the top label Failure to do so may result in permanent damage of the unit The unit has...

Страница 5: ...ion 13 7 ADVANCED SET UP MODE _________________________________________ 14 7 1 Electrode Offset OFS sub function 14 7 2 Setting temperature Set o C sub function 14 7 3 Control Relay A Control Relay B...

Страница 6: ...rical symmetrical input for pH ORP operation Three control modes limit proportional pulse length or proportional pulse frequency Large dual display LCD for easy reading with clear multiple annunciator...

Страница 7: ...matching pin PMP a final control element such as pump or valve a recorder an appropriate pH or ORP measurement cable PH Controller Flow Assembly Measurement Cable Process Assembly with Electrode Powe...

Страница 8: ...ore proceeding Signal Output Input Hold Alarm Relay B Relay A Power Mains 3 pH mA PE AC N L 1 2 5 4 3 6 7 8 9 10 11 12 13 indicated contact positions are for currentless con Pt 100 Potential Matching...

Страница 9: ...BNC 0 PA PE N L S 22 21 1 2 3 20 19 18 Potential Matching Pin PMP s Symmetrical high impedance connections Te 0 PA PE N L S 22 21 1 2 3 20 4 Asymmetrical connections Measuring Cable pH Combination Ele...

Страница 10: ...ction 8 High set relay common 17 4 20 mA for ve connection 9 High set relay working position NO Connections for the 5 way screw terminals 18 Pt100 Pt1000 lead 1 terminal 19 Pt100 Pt1000 sense lead ter...

Страница 11: ...relay operation mode 4 1 2 Display The LCD display features two numerical displays that show status messages and measured values for easy quick reference The display provides short text information f...

Страница 12: ...1 How to view operating parameters without access to change them a Press the Enter key The display will prompt the user to enter a security code S Cd Leave the security code at 000 do not enter a sec...

Страница 13: ...Controller type N O N C Contact Current output 0 20 4 0 mA Cycle time bzw Max Frequency pH ORP at 0 4 mA Proportional range XP pH ORP Symm Asymmetrical Alarm delay Alr Alarm contact cont wiper cont R...

Страница 14: ...ey without adjusting the security code leave code at 000 The upper display shows electrode slope The lower display reading shows the pH reading at 0 mV Note If security code is changed to a value othe...

Страница 15: ...scroll the display to Setup security code 22 3 Press the ENTER key 4 If configured for pH control the upper display reads OFS 5 If configured for ORP control the upper display reads SP1 NOTE Pressing...

Страница 16: ...s used for the first point calibration It would either be 7 00 or 6 86 pH pH pH 3 Press the or key to scroll the lower display to the buffer value that matches your buffer solution 4 Make sure the ele...

Страница 17: ...etting the calibration temperature and the process temperature see section 7 2 3 6 2 ORP mV Calibration This mode allows one point calibration 1 Enter Calibration mode While in the Measurement mode pr...

Страница 18: ...e value of 80 4 Press the ENTER key to confirm the value The electrode indicator and CAL indicator flash The unit automatically adjusts its reading to match the solution value 5 The display will now s...

Страница 19: ...ator appears at the top of the display The lower display shows the current measured pH value The upper display shows the current offset value 6 Press the or key until the pH value coincides with the c...

Страница 20: ...anual temperature compensation two different temperatures process and calibration can be input independently This allows calibration at a temperature other than the process temperature Example setting...

Страница 21: ...set point to activate controller when the pH ORP value goes below the low set point select a high set point to activate controller when the value overshoots the high set point Using both SP1 and SP2...

Страница 22: ...on delay time and the lower display shows On d 0 SETUP HOLD 3 Press the or key to enter on delay time for Set point 1 Set point 2 The controller will delay activation for the number of seconds 0 to 20...

Страница 23: ...se length proportional control for precise control of proportioning valves Use control off to operate controller as a monitor only or to keep relays from switching 1 Follow directions in 7 4 1 to ente...

Страница 24: ...ing the and keys simultaneously escape 7 4 5 Maximum Pulse Length tPL or Maximum Frequency FPF Note If the controller type oFF or L Ct is set the parameters listed in 7 4 4 and 7 4 5 are blanked out T...

Страница 25: ...mode ORP parameters are blocked out If you are in the ORP mode pH parameters are blocked out 1 Follow directions in 7 5 1 to enter Current Output mode 2 Press the ENTER key Scroll with the or keys un...

Страница 26: ...ORP or ORP mV measurement This parameter group lets you select pH mV or readings and input type symmetrical or asymmetrical Symmetrical mode is used in conjunction with a potential matching pin in an...

Страница 27: ...splay shows a numerical value in seconds and the lower display shows AL d 3 Press the or key to select how long of an alarm delay 0 to 2000 seconds you want 4 Press the ENTER key to confirm your selec...

Страница 28: ...eted 10 TUP LD SE HO 7 6 7 Selecting pH sensor type Note This parameter is blocked out in ORP mode Proceed to 7 6 6 Note After each changeover the factory calibration data for zero point and slope are...

Страница 29: ...o factory defaults 4 Press the ENTER key to confirm your selection and to return to Advanced Set up mode or return to Measurement mode by pressing the and keys simultaneously escape Cal TUP LD SE HO S...

Страница 30: ...ey lights up Note Pressing ENTER key at a value other than 22 will cause the controller to revert to Measurement mode and the relays will remain in automatic mode 4 Press the RELAY SELECTION key to se...

Страница 31: ...acts Switching voltage current power max 250 VAC max 3A max 600 VA Alarm Functions Function switchable Latching pulse Wash cycle 0 1 to 199 9 hrs Wash duration 1 to 1999 s Pickup delay 0 to 2000 s Swi...

Страница 32: ...hanical Specifications Dimensions control panel housing L x H x W 175 x 96 x 96 mm Weights control panel housing max 0 7 kg Material ABS with polycarbonate front housing Insulation Front Housing IP 54...

Страница 33: ...SOHF05B pH Combination Electrode with PMP w o ATC ECARGTSO05B pH Combination Electrode with high temperature resistance 110 oC and high pressure resistance 9 bar w o ATC PMP ECARHTTSO05B pH Combinatio...

Страница 34: ...nit rubber gasket 1 unit 11 3 Return of Goods Authorisation must be obtained from our Customer Service Dept to issue a RMA Return of Material Authorisation number before returning items for any reason...

Страница 35: ...the power supply Jumper Positions Internal to the controller JP 1 Selects the input voltage 220 VAC JP 2 Selects the input voltage 110 VAC JP 3 Solder bridge selects between Pt100 and Pt1000 Fuse Note...

Страница 36: ...32 10 18 15 0 99 4 00 6 90 7 04 9 11 9 27 10 12 20 1 00 4 00 6 88 7 02 9 05 9 22 10 06 25 1 01 4 01 6 86 7 00 9 00 9 18 10 01 30 1 01 4 01 6 85 6 99 8 95 9 14 9 97 35 1 01 4 02 6 84 6 98 8 91 9 10 9 9...

Страница 37: ...FORWARD DIRECTION REVERSE DIRECTION SP1 RELAY ON SP2 SP1 Set to LO SP2 Set to HI The controller relay activates when the set point is reached In the reverse direction it does not de activate when the...

Страница 38: ...ction Control characteristic of P Controller as proportional controller Xp 0 0 50 100 Yh Xw SP 1 MIN function Xp 0 Xw SP 2 MAX function Control characteristic of P Controllers as limit value switch Ch...

Страница 39: ...r tON Xp exceeded tON T relay remains picked up Relay ON tON tOFF Pulse Length T OFF Time s Controller signal of Pulse Frequency Controllers The output relay of the pulse frequency controller is clock...

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Страница 42: ...Fax 978 232 6031 Europe P O Box 254 3860 AG Nijkerk Wallerstraat 125K 3862 CN Nijkerk Netherlands Tel 31 033 2463887 Fax 31 033 2460832 Asia Paci c Blk 55 Ayer Rajah Crescent 04 16 24 Singapore 139949...

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