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11. Maintenance

Generally speaking, under normal operation, the transmitter needs no maintenance

expect regular cleaning and calibration of the electrode to ensure accurate and stable

measurement and system operation.

The cleaning cycle for the electrode depends on the pollution degree of the

measurement sample. Normally, it is recommended to make weekly cleaning. The

following chart gives introductions of different cleaning methods according to different

type of contaminations to provide the operators with reference for cleaning and

maintenance.

Type of Contaminations

Cleaning methods

Measuring solutions containing

proteins.

（

Contamination of the

junction

）

The electrode should be soaked in Pepsin

HCl for

several hours. METTLER-TOLEDO 9891 Electrode

Cleaner is recommended.

Measuring solution containing

sulfides.

（

The junction becomes

black

）

The junction should be soaked in Thiourea/HCl

solution until being bleached. METTLER-TOLEDO

9892 Electrode Cleaner is recommended.

Contamination by grease or

organic substance

Short rinsing of the electrode with acetone and

ethanol.

Acid and alkaline soluble

contaminations

Rinsing the electrode with 0.1mol/l NaOH or 0.1mol/l

HCl for a few minutes.

Apply clean water to flash the electrode after above cleaning steps and immerse

theelectrode in 3M KCl solution for 15 minutes at least, and then calibrate the electrode.

The electrode should only be rinsed and never rubbed or otherwise mechanicallycleaned,

since this would lead to electrostatic charges. This could cause an increase in the response

time.

In cleaning the platinum electrode, the platinum ring of the electrode can be rubbed

gently with a wet soft piece of cloth.

※

The frequency of electrode cleaning depends on the type and degree of contamination.

However it is recommended that the electrode be cleaned once a week.

Содержание PC-3110-RS

Страница 1: ...1 PC 3110 RS Intelligent pH ORP Transmitter Operation Manual ...

Страница 2: ...10 3 2 Illustration of terminal function 10 3 3 Description of terminal function 11 3 4 Installation of accessorial transmitter PH 300T Optional 12 3 5 Connection of transmitter and accessional transmitter PH 300T 13 3 6 Typical wirings 14 3 7 Illustration of electrical connection 14 4 Configuration 4 1 Illustration of front panel 15 4 2 Keypad 15 4 3 LED indicators 15 5 Operation 5 1 Measurement ...

Страница 3: ...8 7 16 Contrast settings 39 7 17 Logbook 40 7 18 Automatically back to measurement mode Return 41 8 Calibration Block diagram of Calibration 42 8 1 Entry of calibration menu 43 8 2 Security password of calibration 44 8 3 pH calibration 45 8 3 1 TECH mode 45 8 3 2 NIST mode 45 8 3 3 Any mode 45 8 3 4 Define mode 46 8 3 5 Definition of calibration parameter 46 8 3 6 TECH NIST buffer Calibration 47 8...

Страница 4: ...itter before wiring input output connections and remove it before opening the transmitter s housing The installation site of the transmitter should be good in ventilation and avoid direct sunshine The material of signal cable should be special coaxial cable Strongly recommend using our coaxial cable Do not use normal wires instead Avoid electrical surge when using power Especially when using three...

Страница 5: ...ugh next step Selection of set up items keypad Accordingly item Description Mode Measurement mode to choose pH or ORP measurement Multi Cal Multi point calibration to choose 1 5 points calibration Product Adj Sample readings adjust settings Users may make correction without removing the electrode out of installation site Adjust the on site measurements until the reading is as same as the reading f...

Страница 6: ... RS 485 RS485 serial interface Modbus protocol Digital Filter Take every serial 1 60 measurements average them continuously and make it as the readings Black light Backlight setting to set Auto ON OFF backlight brightness and sensitivity Contrast Contrast of screen setting Logbook Event recorder logbook 50 data Return Setting of returning to the measurement mode Code Security code of set up mode T...

Страница 7: ...libration keypad Accordingly item Description Code Security code of calibration mode Return Time interval setting of returning to the measurement mode TECH Use tech buffer as standard solution for calibration NIST Use NIST standard buffers DIN 19266 as standard solution for calibration Any Use any buffer solution by users definition for calibration Define There are five default standard buffer set...

Страница 8: ...nction and contract function Text mode Numerical display Chart mode 3 mins real time dynamic graph Trace mode Set up from 3 mins to four weeks duration of the measured value trend graph Analog output Isolated DC 0 4 20mA corresponding to main measurement max load 500 Serial interface RS 485 MODBUS RTU or ASCII Logbook 50 event records Settings Contact RELAY contact 240VAC 0 5A Max recommended Acti...

Страница 9: ...epare a square hole of 93 x 93mm on the panel box and then insert the controller directly into the panel box Insert the accessorial mounting bracket from the rear and make it be fixed into pickup groove 2 2 Illustration of panel mounting 93 mm 93 mm Hole size 87 mm 87 mm Hole distances on the panel box Mounting bracket Illustration of panel mounting fixed with mounting bracket 112 mm 5 ...

Страница 10: ...r cover to prevent from the water vapor Installation of pipe mounting Fixed with U shaped pipe clamp Optional Order Number 5333027 Installation of wall mounting Fixed with 4 x M4 screws Sun Shield Pipe mounting Optional Order No 8 35 8 35 3 8 35 1 Sun Shield Wall mounting Optional Order No 8 35 8 35 3 8 35 2 Insert the single hole rubber plug into the unused cable gland and tighten up the cable gl...

Страница 11: ...ive Housing G 2 Rinse the electrode H properly so that it can be easily pass through Rubber electrode holder I leave about 5cm bellow 3 Install the prepared Rubber electrode holder I into PP Electrode Protective Holder G and fix with PP pipe protective cover J tightly A Upper cover of round junction box B O ring C Cable fixing gland MG16A D Lower cover of round junction box E Cable fixing point MG...

Страница 12: ...ound junction box D and fix Cable fixing gland MG16A E tightly leaving 12 14cm in the box for split 8 Extend the lead coaxial inner and electrode coaxial inner to connect them extend the lead coaxial shield to fix on the terminal block 3 Tight up Upper cover of round junction box A to finish the installation Installation of holder support base The L shaped electrode holder support base is installe...

Страница 13: ...ed the Order No is 7202 F94009 BK 2 If temperatures probe 8 26 3 NTC30K or 8 26 8 PT1000 is used for two wire distribution the black wire terminal should be forbidden 2 Three wire distributing system IN terminals Terminal No OUT terminals Terminals on Transmitter Coaxial inner 1 Coaxial inner s extension wire for electrode GLASS Solution ground wire Shield 2 Solution ground wire SG Coaxial Shield ...

Страница 14: ...rview of pH transmitter PC 3110 RS 3 1 Illustration of rear panel 3 2 Illustration of terminal function POWER WASH Cln 12V REL2 REL1 pH ORP GLASS Ref AC INPUT POWER 4 20mA Temp SG SG T P RS 485 D B G D A 10 ...

Страница 15: ...SG Solution ground wire In two wire distributing system there should be a jumper between this terminal and REF a short circuit slice is attached when going out the factory １６ T P Connect with one of cable end of temperature probe １７ SG The other cable end of temperature probe or used as 12V ground potential １８ DC 12V Output terminal of direct current voltage 12V PH 300T only １９２０ 4 20mA terminal ...

Страница 16: ...ce of onsite observation measurement and calibration Illustration of wall mounting type 1 Combine the sun shield and PH 300T transmitter by round stainless steel screws 4x15 2 Fix item 1 combination on wall by self tapping screws Illustration of pipe mounting type 1 Fix immersive holder B into U shaped clamp A 2 Combine the item 1 combination with PH 300T C by Round stainless steel screws 4 15 A S...

Страница 17: ... 300T s terminal respectively connect to DC12V and of the controller E The S and S on transmitter PH 300T s terminal respectively connect to GLASS and REF of the controller F The I and I on transmitter PH 300T s terminal are output 4 20mA which can connect to devices that receive current signals Note The current output signal of this transmitter is not insulating and thus do not directly connect w...

Страница 18: ...ircuit slice Surge absorber Surge absorber Surge absorber Surge absorber Transmitter Cleaning device Dose feeder Dose feeder 100 240VAC Surge absorber Surge absorber External relay External relay External relay Note The transmitter built in miniature relays is necessary to be repaired and replaced by professional technicians It is recommended to use an external relay Power Relay to activate the ex...

Страница 19: ...ameter set up mode and Calibration mode pressing this key to select leftward or change to another page 2 When adjusting value press this key to increase the value 1 In the parameter set up mode and Calibration mode pressing this key to select rightward or change to another page 2 When adjusting value press this key to decrease the value Key for confirmation pressing this key is essential when modi...

Страница 20: ...nds to switch the display mode from text mode trace mode and real time chart display mode 5 5 Default value 5 4 1 Setting default value Measurement mode pH Multi Cal 2 points pre setting Temperature compensation MTC 25 C Relay 1 High point alarm AUTO SP1 10 00 pH Hys 0 10 pH Relay 2 Low point alarm AUTO SP2 04 00 pH Hys 0 10 pH Wash time OFF Analog 1 current output pH ORP 4 20 mA 0 00 14 00pH RS 4...

Страница 21: ... as the following illustration It mainly includes main measurement value and unit temperature measurement value and unit temperature compensation mode and clock display Main measurement unit Temperature compensation Mode MTC ATC Temperature measurement unit Main measurement Clock display 17 ...

Страница 22: ...ill be re updated When the measured value exceeds a set range of the upper and lower limit the graphics will be presented in the upper and lower limits dotted line Real time chart mode display is shown as below There are also real time measurement value unit and temperature value unit which are displayed in the bottom of the screen The timeline in real time graphic is divided into 12 depict which ...

Страница 23: ...the horizontal axis of the display is on behalf of each characterization interval T 12 So every depiction has 5 T 60 sets of records Users can set the corresponding pH ORP measuring range in its set up menu see section 7 4 The smaller the range is set the higher resolution of the display is The trace mode is shown as below There are also real time measurement value unit and temperature value unit ...

Страница 24: ...tput exceeds the upper lower limitation the display twinkles pH mA pH mA or ORP mA ORP mA Note The HOLD warning text appears when clean function is activated or when entering setup menu or when entering calibration menu Under HOLD status the corresponding display and output as follows 1 Both Relay 1 and Relay 2 cease from action If enter setting menu or calibration menu under clean status the inst...

Страница 25: ... 2 Hys Input Select Relay 2 On Off Relay 2 Test Relay 2 SP Input Points Setting PTC Value Input Value Correct Value Correct Select Relay 1 Hi Lo Select Relay 2 Hi Lo Product Adj Setting Adjust the reading Auto Return Setting Digital Display Chart Display Trace Display Set Max Value Set Min Value Set Max Value Set Min Value Set Time Dura tion Language Setting English Tradi tional Chinese Simpli fie...

Страница 26: ...uto Manual Exit Auto ON OFF Input Bright ness Input Sensi tivity Input Bright ness RS 485 Setting Select RTU or ASCII Select Parity Select Baud rate Set ID Number Logbook Event Record Read History Record Contrast Setting Cotrast Clean Setting Input Shut down time Input Clean Hys Time Clean Test Input Clean Active time Relay 2 Setting Code Setting Return to previous level action Select Clock On Off...

Страница 27: ... mode pressing the two keys and simultaneously allows you enter the overview of current setting and press to enter the set up mode to modify the setting if necessary Enter set up menu Measurement Mode Press or Press Press to confirm it Press 23 ...

Страница 28: ...word is keyed in the display shows Error Code press to re key in it or press to exit The first 0 of digits 0000 start to twinkle Press or to adjust the value and then press to confirm it and continually key in the next digit and so on Select to turn on or turn off code protection function If you select turn on please key in a new code There will be a code requirement showing in display when you re...

Страница 29: ...etup menu select the system language from English Traditional Chinese and Simplified Chinese Enter Measurement Mode Setup Press to confirm it Press or to select language type Press or to select language type Press to confirm it 25 ...

Страница 30: ...he record Press to confirm it Press to confirm it Press or to select pH measurement mode Press to confirm it Press to confirm it Press to confirm it Press to confirm it Press to confirm it Press to confirm it Press or to input the upper limit value Press or to input the lower limit value To set record duration T press or to adjust the hour value press to confirm and move to minute adjustment 26 ...

Страница 31: ... Select YES press Press to confirm it Press or to select ORP measurement mode Press to confirm it Press to confirm it Press to confirm it Press to confirm it Press to confirm it Press to confirm it Press or to input the upper limit value Press or to input the lower limit value To set record duration T press or to adjust the hour value press to confirm and move to minute adjustment 27 ...

Страница 32: ... Product adjustment Setup Press to confirm it Press or to select the number of calibration points There are 1 5 points to choose from The factory default is 2 points When the calibration reaches the number of setting points the calibration procedure will automatically be terminated and display the calibration result Press to confirm it 28 ...

Страница 33: ...ment as same as the lab measurement to eliminate the doubt of measurement error Under normal measurement display mode there is a PDT sign on top of the pH unit Please see Ch 6 4 Enter Temperature Setup You may compare the pH reading with that of taking the sample out and testing in the lab Press or to adjust the pH value You may also adjust the ORP reading under ORP mode through the same procedure...

Страница 34: ... necessary compare with the actual temperature value tested by standard thermometer Press or to input the modified value Press to confirm it Press to confirm it Press to confirm it Press to to select Press to confirm it Use standard thermometer to test the actual temperature of the solution and press or to input the correct temperature value Press to to select 30 ...

Страница 35: ... alarm High Point Alarm Control off off on on SP Hys pH t sec Press or to select to activate REL1 or not If not the guide menu goes to setup of Relay 2 Press to confirm it Press to confirm it Enter Relay 2 Setup Press or to select use REL1 as Hi point or Lo point alarm Press to confirm it Press or to adjust set point SP value Press to confirm it Press or to adjust Hysteresis Hys value Press to con...

Страница 36: ...nt alarm Low Point Alarm Control off SP Hys pH t sec off on on Enter Clean Setup Press or to select to activate REL2 or not If not the guide menu goes to setup of clean Press to confirm it Press to confirm it Press or to select use REL2 as Hi point or Lo point alarm Press to confirm it Press or to adjust set point SP value Press to confirm it Press or to adjust Hysteresis Hys value Press to confir...

Страница 37: ...before cleaning If enter setting menu or calibration menu under clean status the instrument will stop clean status automatically Press or to adjust the auto turning on time Press to confirm the minute part and move to adjust the second part Press to confirm it Press to confirm it Press to confirm it Press to confirm it Press to confirm it Press or to select to activate a test of Clean or not If ON...

Страница 38: ...output value can be used as a basis for failure determination Under HOLD measurement status the current output maintain the last output value before HOLD status However in order for convenience of insuring the current setting of an external recorder or of a PLC controller the current output will be 0 4mA or 20mA under the analog output setup menu Enter Date Time Clock Setup Press to confirm it Pre...

Страница 39: ...ill also show OFF under calibration overview display Only when the inner battery is out of power the clock may stop operation Then please replace the 3V CR2025 Li batter inside the transmitter Enter RS 485 Communication Setup Press or to set the hour part and press to adjust the minute part Press or to set the year Press or to set the month part and press to adjust the date part Press to confirm i...

Страница 40: ...al output maintains the last output value before hold status Press or to select RTU or ASCII mode Enter Sample average of measurements Digital Filter Setup Press to confirm it Press to confirm it Press to confirm it Press to confirm it Press to confirm it Press or to select Even or Odd or None for parity check Press or to select 2400 or 4800 or 9600 for baud rate Press or to set the ID number of t...

Страница 41: ...ilter You may select the number of sample to be averaged each time to become a reading which is gradually counted in order to increase the stability of measurement Enter Back Light Setup Press or to set the number of sample to be averaged Press to confirm it Press to confirm it 37 ...

Страница 42: ...ng The backlight is always on OFF setting The backlight is off When there is a keystroke it enters to the touch on status Auto setting According to the ambient light activate or deactivate the backlight When there is a keystroke it enters to the touch on status Press or to select backlight mode Enter Contrast Setup Press or to select 2 1 0 1 2 five backlight brightness levels Press or to select ba...

Страница 43: ...gs Enter setup of display contrast You can set the contrast of display according to your need 2 1 0 1 2 light to dark Enter Logbook Setup Press to confirm it Press to confirm it Press or to select display contrast level 39 ...

Страница 44: ...nt Setting Calibration mode current output over setting range pH_mA Over power failure Power On Power Off and other error message records Error1 Error2 etc The definition of error messages please refer to Ch10 Enter Auto return Return Setup Press to confirm it Press to confirm it Press or to select different page 40 ...

Страница 45: ...s to exit setup menu manually while Auto means that the display automatically exit the setup menu and back to measurement mode after a period of time without pressing any key Press or to adjust minute part and press to confirm it and move to second part Press or to select Auto return or manual exit Enter Password Code Setup Press to confirm it Press to confirm it Press to confirm it Press to confi...

Страница 46: ...buffer Reading for fifth buffer Multi Cal 2 or press Cal Multi Cal 2 or press Cal Multi Cal 1 or press Cal Same procedure for 3rd 4th point Multi Cal 1 or press Cal Temp adjust for first buffer MTC or ATC Reading for first buffer Temp adjust for second buffer MTC or ATC Temp adjust for third buffer MTC or ATC Reading for second buffer Reading for third buffer Multi Cal 2 or press Cal Multi Cal 4 o...

Страница 47: ...lows you enter the Calibration Information If you do not need to re calibrate the measurement system press to go back to measurement mode If you need to re calibrate the system press to enter to the calibration setup menu Press Press to confirm it Press Press Enter Calibration menu Measurement mode 43 ...

Страница 48: ...exit the calibration menu The first 0 of digits 0000 start to twinkle Press or to adjust the value and then press to confirm it and continually key in the next digit and so on Press to confirm it Press to confirm it Press to confirm it Select to turn on or turn off code protection function If you select turn on please key in a new code There will be a code requirement showing in display when you r...

Страница 49: ...up to 3 point calibration The electrode is automatically calibrated according to pH value and temperature of TECH standard buffers pH4 01 pH7 00 pH10 00 The range of zero point and slope of the electrode is also determined If one of them is over the range the display shows error message of zero point and slope failure See appendix Table 1 pH temperature table of TECH standard buffers 8 3 2 NIST mo...

Страница 50: ...uffers 8 3 5 Definition of calibration parameter You can calibrate the electrode by one point or up to three points of standard solutions by any sequence As different calibration point method is applied the definition of the zero point and slope different Calibration point Determination The showed calibration value One point calibration Asy Zero point Asy offset or Zero point Asy 1 If not calibrat...

Страница 51: ...nd then put it into the second buffer If under MTC temperature mode press or to adjust temperature value Or press to decide to simply make a single point calibration The instrument measures the mV value of the buffers Press to directly shows the determination result or wait and read for the result by automatic display Clean the electrode by distilled water and then put it into the first buffer If ...

Страница 52: ...s to directly shows the determination result or wait and read for the result by automatic display Clean the electrode by distilled water and then put it into the first buffer If under MTC Manual Temp Compensation temperature mode press or to adjust temperature value Press to confirm it Press to confirm it Press to confirm it Obtain the pH value of second point buffer solution Press or to adjust pH...

Страница 53: ...Press or to modify the pH value of buffer 1 data sheet under different temperature Select Next Page and then press to go to next buffer data sheet Press or to modify the pH value of buffer 2 data sheet under different temperature Select Next Page and then press to go to next buffer data sheet Press or to modify the pH value of buffer 5 data sheet under different temperature Select Exit and then pr...

Страница 54: ...on Obtain the pH value of second point buffer solution Press or to select starting of calibration and execute preset calibration Under MTC Manual Temp Compensation temperature mode Press or to select the first point buffer solution Clean the electrode by distilled water and then put it into the first buffer If under MTC Manual Temp Compensation temperature mode press or to adjust temperature value...

Страница 55: ...p menu Select Calibration icon and adjust mV value The adjustable range is from 300mV to 300mV Put the ORP electrode into ORP standard solution Press or to adjust the main display value until it is equal to the desired mV value Press to confirm it Press to confirm it 51 ...

Страница 56: ...that the display automatically exit the calibration setup menu and back to measurement mode after a period of time without pressing any key Note The return function of setup menu and calibration setup menu are independent settings Enter Calibration Code Setup Press to confirm it Press to confirm it Press to confirm it Press or to select Auto return or manual exit Press to confirm it Press or to ad...

Страница 57: ...use an 120 ohm impedance matching resistors at terminal equipment in the transmission lines D D ends across to effectively reduce or eliminate signal reflection 3 Without repeaters the RS 485 network can not exceed a maximum of 32 nodes The maximum communication transmission distance of RS 485 is up to 1200 meters For long distance transmission it is recommended to apply cables which are dedicated...

Страница 58: ...2 9600 3 19200 0007H Parity 2 USHORT 0 None 1 1 Even 2 Odd 0008H Real time clock 12 USHORT Second 2012 01 01 00 00 00 0009H USHORT Minute 000AH USHORT Hour 000BH USHORT Day 000CH USHORT Month 000DH USHORT Year 000EH Code setting 2 USHORT Code setting 1111 000FH Temperature mode 2 USHORT 0 MTC 0 1 PTC 2 NTC 0010H Clean relay 2 USHORT 0 OFF 0 USHORT 1 AUTO 0011H 2 USHORT ON S 0 5999 0 Second 0012H 2...

Страница 59: ...tal Filter 2 USHORT 1 60 5 0025H 0030H Factory reserved Note 1 The actions without sign only support for function code 03H The actions with sign support function code 03H 06H 10H USHORT data range from 0 to 65535 SHORT data range from 32768 to 32767 Note 2 FLOAT is a 32 bit IEEE 754 format The above table for an example is divided into two 16 bit register data transmission The back 16 bit register...

Страница 60: ...ory reserved Function code 01H 05H 0FH Modbus response dispersion parameter Logic address Item BIT Description Default value Note 0070H LO Alarm 1 Contact on 0 Contact off 0071H Hi Alarm 1 Contact on 0 Contact off 0072H MA too high 1 Contact on 0 Contact off 0073H MA too low 1 Contact on 0 Contact off 0074H Exceed temp range 1 Contact on 0 Contact off 0075H Exceed pH ORP range 1 Contact on 0 Conta...

Страница 61: ... Registers Hi 00 Register value Lo CD No of Registers Lo 02 Register value Hi 41 LRC C3 Register value Lo C8 LRC 56 RTU Mode Request Response Message Framing Hex Message Framing Hex ID Address 01 ID Address 01 Function code 03 Function code 03 Starting Address Hi 00 Byte Count 04 Starting Address Lo 37 Register value Hi CC No of Registers Hi 00 Register value Lo CD No of Registers Lo 02 Register v...

Страница 62: ...k whether there is bubble or air in the glass end of the electrode 2 Maintain the electrode or change a new electrode and make another calibration Error4 1 The temperature is over the range 0 50 C while calibration 2 Buffer cannot be recognized 1 Please adjust the standard solution to the proper temperature range 3 Please check whether there is bubble or air in the glass end of the electrode or ma...

Страница 63: ...ides The junction becomes black The junction should be soaked in Thiourea HCl solution until being bleached METTLER TOLEDO 9892 Electrode Cleaner is recommended Contamination by grease or organic substance Short rinsing of the electrode with acetone and ethanol Acid and alkaline soluble contaminations Rinsing the electrode with 0 1mol l NaOH or 0 1mol l HCl for a few minutes Apply clean water to f...

Страница 64: ...810 20 1 675 4 001 6 881 9 225 12 627 25 1 679 4 006 6 865 9 180 12 454 30 1 683 4 012 6 853 9 139 12 289 35 1 688 4 021 6 844 9 102 12 133 40 1 694 4 031 6 838 9 068 11 984 45 1 700 4 043 6 834 9 038 11 410 50 1 707 4 057 6 833 9 011 11 705 Table 3 Define Built then in by end user standard buffers Define standard buffers table TEMP C Buffer 1 Buffer 2 Buffer 3 Buffer 4 Buffer 5 5 2 010 4 040 7 07...

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Страница 68: ... Lane 169 Kangning St Xizhi Dist New Taipei City Taiwan R O C Tel 886 2 2695 9688 Fax 886 2 2695 9693 e mail suntex ms1 hinet net www suntex com tw en 5040C PC 3110 RS Technical data subject to alternations Quality Systems ISO 9001 201305 ...

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