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INTRODUCTION 

Thank you for purchasing the 

α

lpha pH 190 

 DIN pH/ORP Controller. This 

controller is part of a series of quality process controllers available from Eutech 
Instruments. These sturdy, economical pH/ORP controllers are designed with the 
features and reliability of a much more expensive instrument. 
   
Your controller includes: 
  

 

Removable terminal blocks for easy connections; 

 

Two mounting brackets for easy panel mounting; 

 
When shipped, the controller is set to the pH mode. See Setup program P3.1 for 
directions on selecting ORP mode. 
 
Some features of this controller are: 

 

Two set points, two SPDT relay operation 

 

Scrolling, 14-segment LED guides user easily through setup functions 

 

Reliable power supply from 85 to 260 V AC, 50/60 Hz or DC withstands 
voltage fluctuations 

 

Push-button operation from the front panel 

 

Two-point pH calibration, offset temperature and ORP calibration  

 

Adjustable hysteresis band prevents rapid contact switching near set-point 

 

Selectable automatic or manual temperature compensation 

 

Two-level password protection 

 

Removable terminal strips for quick and easy connections 

 

    

Built-in non volatile memory retains setup even if power fails, and lets you 

 configure unit before installation 

 

Isolated 4-20 mA output for remote monitoring or hard copy recording 

Содержание ALPHA CON 190 18 DIN CONDUCTIVITY CONTROLLERTRANSMITTER

Страница 1: ...Technology Made Easy Instruction Manual lpha pH 190 1 8 DIN pH ORP Controller with Temperature display and Transmitter 68X276106 Rev 0 11 2004...

Страница 2: ...smitter do not hesitate to contact the nearest Eutech Instruments Authorized Distributor Eutech Instruments cannot accept any responsibility for damage or malfunction to the controller transmitter cau...

Страница 3: ...RP CALIBRATION 14 8 TEMPERATURE CALIBRATION 15 9 SETUP MODE 16 9 1 GENERAL INFORMATION 16 9 2 SETUP MODE OVERVIEW 17 9 3 SET POINT 1 P1 0 18 9 4 SET POINT 2 P2 0 20 9 5 CONFIGURATION P3 0 22 9 6 VIEWI...

Страница 4: ...ome features of this controller are Two set points two SPDT relay operation Scrolling 14 segment LED guides user easily through setup functions Reliable power supply from 85 to 260 V AC 50 60 Hz or DC...

Страница 5: ...that power source it is connected to is as specified in the top label Failure to do so may result in a permanent damage to the unit The unit has live and exposed parts inside If it has to be opened ma...

Страница 6: ...t of the displayed parameter temperature 8 mV Unit of the displayed parameter ORP Keys 9 MODE Use to toggle between Measurement modes pH ORP and temperature 10 CAL ENTER Use to enter Calibration mode...

Страница 7: ...POLE Pt 100 SENSE GROUND RELAY 2 NC N LIQUID GND L J2 J1 J3 pH ORP WARNING D B C A A 3 pin connector for power supply B 9 pin connector for relays C 7 pin connector for temperature sensor D BNC connec...

Страница 8: ...ither terminal Terminals 13 and 14 must be shunted unless using a 3 wire RTD NOTE pH 190 is factory set for manual temperature compensation ATC can be selected in Setup mode of Program P3 3 3 Slide th...

Страница 9: ...he controller 1 Align the catch to the side of the controller and insert threaded rods through catch BACK VIEW 2 Screw the threaded rod through the catch in a clock wise direction Tighten until the ca...

Страница 10: ...rogram P3 3 NOTE After pressing the MODE key to display Temperature if there is no further key press the controller will automatically revert to pH ORP measurement mode after about 30 seconds 4 2 Set...

Страница 11: ...cond relay set point You can adjust it in 0 01 increments from 0 00 to 14 00 pH 999 to 1000 mV 3 Press ENTER to confirm and return to the measurement mode NOTE Press and keys together ESCAPE at anytim...

Страница 12: ...ENTER again The display reads P 000 The first 0 flashes 3 Press ENTER again to leave the first digit 0 and to scroll to the next number 4 Press the or keys to change the second digit to the desired pa...

Страница 13: ...10 P P 000 P 000 P 0 10 P 020 P 0 11 P 022 P 011 P 022...

Страница 14: ...using the password code procedure as explained in Section 5 2 The display scrolls BUFF and either pH 7 00 or 6 86 You must calibrate at one of these two buffers for the first calibration Use keys to s...

Страница 15: ...d and the Pt 100 is not connected or if it is broken the pH display will flash Under this condition the calibration will not be allowed 7 0 0 7 0 0 10 0 1 10 0 1 10 0 3 6 9 7 bU f f bU f f d o n e ENT...

Страница 16: ...e mV output of your pH probe If the value displayed differs substantially from the buffer value this indicates electrode drift Consider replacing your electrode 4 Press ENTER to confirm the buffer val...

Страница 17: ...ly access the Calibration mode when the unit is in ORP measurement mode NOTE Instead of pressing the CAL ENTER key you can also enter the Calibration mode using the password code procedure as explaine...

Страница 18: ...value at which temperature will be compensated You can select a manual temperature value from 10 to 110oC Factory default is 25 0oC See Setup program P3 3 for instructions on ATC or MTC selection To...

Страница 19: ...measurement mode both the 4 20mA output and relay activities resume depending on the settings To enter setup mode 1 Key in the password 022 using the method described in section 5 2 Press the or keys...

Страница 20: ...is value P3 0 Configuration P3 1 select pH or ORP units P3 2 select symmetrical or asymmetrical input mode P3 3 select temperature compensation MTC or ATC P4 0 Calibration data P4 1 view first calibra...

Страница 21: ...l P1 0 and SP1 Press ENTER 3 The screen will scroll P1 1 SP1 then the current set point value 4 Press or keys and adjust first relay set point You can adjust it in 0 01 increments from 0 00 to 14 00 p...

Страница 22: ...alues below 4 00 but will not de activate till the measured pH value rises above pH 4 50 The hysteresis window can be set to any value within the range shown below pH mode 0 00 to 2 00 pH ORP mode 0 t...

Страница 23: ...P2 0 and SP2 Press ENTER 3 The screen will scroll P2 1 SP2 then the current set point value 4 Press or keys and adjust second relay set point You can adjust it in 0 01 increments from 0 00 to 14 00 pH...

Страница 24: ...ve 10 00 but will not de activate till the measured pH value decreases below pH 9 50 The hysteresis window can be set to any value within the range shown below pH mode 0 00 to 2 00 pH ORP mode 0 to 30...

Страница 25: ...oggle between pH and ORP 5 Press ENTER to confirm and continue to step three of P3 2 P3 2 Select symmetrical or asymmetrical input mode Use asymmetrical mode under normal operating conditions Use symm...

Страница 26: ...re sensor 1 Key in the password 022 as per procedure in Section 5 2 Press key twice The screen will scroll P3 0 and CONF Press ENTER three times 3 The screen will scroll P3 3 and MTC or ATC 4 Press or...

Страница 27: ...PE at anytime to leave the Setup mode and return to Measurement mode P4 0 Viewing calibration points 1 Key in the password 022 as per procedure in Section 5 2 Press key three times The screen will scr...

Страница 28: ...Setup mode and return to Measurement mode P5 0 Viewing pH electrode data 1 Key in the password 022 as per procedure in Section 5 2 Press key four times The screen will scroll P5 0 and ELEC Press ENTER...

Страница 29: ...t anytime to leave the Setup mode and return to Measurement mode P5 0 Viewing ORP electrode data 1 Key in the password 022 as per procedure in Section 5 2 Press key four times The screen will scroll P...

Страница 30: ...SCAPE at anytime to leave the Setup mode and return to Measurement mode P6 0 Controller reset 1 Key in the password 022 as per procedure in Section 5 2 Press key five times The screen will scroll P6 0...

Страница 31: ...H 20 mA ORP 999 mV 4 mA 1000 mV 20 mA The 4 20 mA current loop can drive a load resistance of no more than 200 12 ERROR MESSAGES The following table provides a guideline to enable diagnosis of possibl...

Страница 32: ...oller 2 SPDT relays Switching Voltage Current Power Max 250 VAC Max 3A Max 600 VA Electrical Data And Connections Power Requirements 85 to 260 VAC 50 60 Hz or DC Signal Output Load 4 20 mA galvanicall...

Страница 33: ...PMP EC ARHTTSO 05B pH Combination Electrode w o ATC PMP EC ARTSO 05B ORP Gold Electrode with PMP but w o ATC EC HTAUTSO 05B ORP Platinum Electrode with PMP but w o ATC EC HTPTTSO 05B Note Above pH ORP...

Страница 34: ...is noise the noise acts as a common signal which is picked up by both the pH and the reference electrodes However since the reference electrode is grounded to the ground potential of the amplifier ele...

Страница 35: ...otential matching pin such as the EC ARGTSO 05B or EC 100GTSO 05B If your electrode does not have a solution ground be sure to set the controller to Asymmetrical mode Symmetrical mode avoids grounding...

Страница 36: ...nged 1 Measurement mode pH or ORP 2 Temperature compensation mode ATC or MTC 3 Temperature offset calibration value if in ATC mode pH Defaults pH input Asymmetrical offset 0 0 mV slope 59 2 mV Set poi...

Страница 37: ...oller or if higher power is needed it is recommended that you use the controller relay to drive an external relay Diagram below shows a typical installation Wiring should be changed appropriately if n...

Страница 38: ...Return of Goods Authorisation number before returning items for any reason When applying for authorisation please include data requiring the reason of return Items must be carefully packed to prevent...

Страница 39: ...utech Instruments distributor or visit our website listed below Manufactured by Eutech Instruments Pte Ltd Blk 55 Ayer Rajah Crescent 04 16 24 Singapore 139949 Tel 65 6778 6876 Fax 65 6773 0836 E mail...

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