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Instruction Manual 

 

α

lpha-pH2000D 

 

- 28 - 

 

6.8

 

Wash relay (WASH) sub-function  

 
In this sub-function you set the parameters for the wash relay.  
 

1

2

2

3

3

4

5

ENT

ENT

ENT

ENT

ENT

ENT

ENT

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

SETUP

HOLD

off

 

 

1.

 

Select the “WASH” sub-function, and then press the ENT key.  

2.

 

Enabling/disabling wash function: press the 

▲

 or 

▼

 key to enable (WASH ON) or disable 

(WASH OFF) wash function. Press the ENT key to confirm your selection.  

3.

 

Selecting the relay status condition: press the 

▲

 or 

▼

 key to choose desired relay status 

(de-energized = “DEEN” or energized = “EN”). Press the ENT key to confirm your selection.  

4.

 

Setting the wash interval in hours: Press the 

▲

 or 

▼

 key to set the desired wash interval 

(setting range: 0.1 to 200.0 hours). Press the ENT key to confirm your setting.  

5.

 

Setting the wash duration in seconds: Press the 

▲

 or 

▼

 key to set the desired wash 

duration (setting range: 1 to 2000 seconds). Press the ENT key to confirm your setting.  

 

 

Note:  During wash cycle the transmitter is set to HOLD. For safety reasons, the 
HOLD function is activated 5 seconds prior and deactivated 10 seconds after the 

wash cycle. 

 
Continue with Setup mode procedures, or return to Measurement mode by pressing the 

▲

 

and 

▼

 keys simultaneously (escape).  

 
 

 

Содержание alpha-pH 2000D

Страница 1: ...Technology Made Easy Instruction Manual lpha pH2000D pH and ORP Controller Transmitter 68X216855 Rev 1 12 04...

Страница 2: ...pH2000D pH ORP controller transmitter If you have doubts in the use of the instrument please do not hesitate to contact the nearest Eutech Instruments Authorised Distributor The information presented...

Страница 3: ...ower 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 make sur...

Страница 4: ...16 5 5 VIEW ACTUAL ZERO AND SLOPE 17 6 SETUP MODE 18 6 1 ENTER SETUP MODE 18 6 2 ELECTRODE OFFSET OFS SUB FUNCTION 19 6 3 SETTING TEMPERATURE SET C F SUB FUNCTION 20 6 4 CONTROL RELAY A RELAY B SP1 S...

Страница 5: ...JUMPER SETTINGS 38 11 2 APPENDIX 2 PH BUFFER VALUES AT VARIOUS TEMPERATURES 39 11 3 APPENDIX 3 SIMPLE EXPLANATION ON THE FUNCTION OF HYSTERESIS 40 11 4 APPENDIX 4 GENERAL INSTRUCTIONS CONCERNING CONT...

Страница 6: ...d could lead to inefficient operation and possible loss of production The instruction manual must always be stored close at hand in a place accessible to all people working with the pH ORP Controller...

Страница 7: ...smitter and who are qualified for such work Make sure the mains cable is separated from the power supply before opening the unit No modifications to the lpha pH 2000D are allowed The manufacturer supp...

Страница 8: ...pensation ATC Manual temperature compensation setting without the ATC probe with independent setting for calibration and process temperature Two galvanically isolated current outputs 0 4 20mA Two swit...

Страница 9: ...e with integrated or separate temperature sensor NTC300 thermistor An appropriate pH or ORP measurement cable An immersion flow or process assembly with or without a potential matching pin PMP A final...

Страница 10: ...Instruction Manual lpha pH2000D 5 2 3 Unit overview Wall mounting version...

Страница 11: ...ble in symmetrical measurement mode 2 3 2 Key functions Key Description Enter Calibration mode requires access code Enter Set up mode requires access code Access sub functions parameters within a func...

Страница 12: ...or lights red if measured value exceeds limit This LED lights green if measured value is within the limit for Relay B or lights red if measured value exceeds limit This LED lights if cleaning cycle i...

Страница 13: ...OLD HOLD HOLD C Temperature settings see section 6 3 Relay A set point 1 settings see section 6 4 Relay B set point 2 settings see section 6 4 Controller settings see section 6 5 Current output 1 sett...

Страница 14: ...4 57 8 2 28 For Pg13 5 cable glands Holes for wall mounting 2X 21 5 85 6 24 66 5 2 62 80 3 15 90 3 54 90 3 54 Holes for post mounting 4X Red Plugs for wall mounting holes enclosure 2X 175 6 88 175 6 8...

Страница 15: ...1 21 Earth ground 5 Relay A SP 1 22 no connection 6 Relay B SP 2 23 no connection 7 Relay B SP 2 24 no connection 8 Wash relay 25 no connection 9 Wash relay 26 Shield drain wire 10 Alarm relay NC 27 5...

Страница 16: ...NOTE a Switch or circuit breaker shall be included in the building installation b It shall be in close proximity to the equipment and within easy reach of the operator c It shall be marked as the disc...

Страница 17: ...e if the controller is set for pH measurement or ORP if it is set for ORP measurement The annunciators pH mV or at the upper right side of the display indicate the current measurement mode setting whe...

Страница 18: ...ess the ENT key to confirm the calibration security code 3 If ENT key was pressed The display prompts you to enter the security code Press the or key to set the security code to 22 Press the ENT key t...

Страница 19: ...e point or a two point calibration Press the ENT for two point calibration or the CAL key for one point calibration The electrode indicator and CAL indicator both flash for a few seconds The controlle...

Страница 20: ...ibration beginning from Step 1 Note When calibrating with manual temperature compensation the controller automatically changes from the preset process temperature to the calibration temperature After...

Страница 21: ...t measurement 5 4 ORP Calibration If controller is configured for ORP measuring you can perform a calibration at two points using a low concentration sample 20 and a high concentrate sample 80 To cali...

Страница 22: ...s original calibration data 5 5 View actual zero and slope ENT ENT CAL pH CAL MEAS PH O C ATC 1 While in Measurement mode press the CAL key The display will prompt you to enter a security code Leave t...

Страница 23: ...ee section 6 6 Current output 2 settings see section 6 7 Wash contact settings see section 6 8 Unit settings see section 6 9 Calibration see section 5 6 SETUP MODE 6 1 Enter Setup mode In the Setup mo...

Страница 24: ...at the time you take the sample 2 Measure the pH value of your sample using a calibrated pH tester hand held meter or bench meter Record the correct pH value 3 Select the OFS sub function and then pre...

Страница 25: ...s at 25 C even if your process temperature is different from 25 C 4 Setting the process temperature press the or key to adjust the process temperature upper value setting range 10 0 to 125 0 C 14 0 to...

Страница 26: ...ENT key to confirm your selection Note This parameter lets you choose the relay function Select LO to activate the relay when the pH ORP value undershoots the set point select HI to activate the rela...

Страница 27: ...seconds time delay before your relay activates 6 Setting the off delay time lag press the or key to enter the off delay time for set point 1 set point 2 Your controller will delay deactivation of the...

Страница 28: ...ermines the controller s parameters SETUP SETUP HOLD HOLD ENT SETUP HOLD ENT ENT ENT ENT ENT ENT SETUP SETUP SETUP SETUP SETUP SETUP SETUP SETUP HOLD HOLD HOLD HOLD HOLD HOLD HOLD HOLD SETUP SETUP SET...

Страница 29: ...lay status de energized DEEN or energized EN Press the ENT key to confirm your selection If the controller is set to proportional control P PI 4 Selecting the proportional controller type press the or...

Страница 30: ...or key to set the proportional range setting range 10 to 500 Press the ENT key to confirm your setting 11 Setting the pulse frequency press the or key to set the pulse frequency setting range 60 to 1...

Страница 31: ...ill be 4 mA or 0 mA press the or key to set the pH or ORP value to be equivalent to 4 mA or 0 mA respectively Press the ENT key to confirm your setting 4 Setting the pH or ORP value at which the trans...

Страница 32: ...key to confirm your selection 3 Setting the temperature value at which the transmitter output will be 4 mA or 0 mA press the or key to set the temperature value setting range 10 0 to 110 0 C or 14 to...

Страница 33: ...to choose desired relay status de energized DEEN or energized EN Press the ENT key to confirm your selection 4 Setting the wash interval in hours Press the or key to set the desired wash interval set...

Страница 34: ...ss the ENT key to confirm your selection 3 Setting the backlight intensity appears only If backlight is on press the or key to set backlight intensity setting range minimum 1 to maximum 4 Press the EN...

Страница 35: ...ps old values active when confirmed with ENT key CAL DEF resets all calibrations to factory defaults when confirmed with ENT key FCT DEF resets all settings to factory defaults when confirmed with ENT...

Страница 36: ...mode must be set to automatic standard mode after switch on relay mode LED Auto lights While in Measurement mode press the REL key pH The display shows the set point value for Relay A and LED A light...

Страница 37: ...OLD off If you selected Limit control The display shows the current measured value and OFF or ON depending on the relay status of the currently selected relay pH SETUP HOLD o If you selected Pulse len...

Страница 38: ...ction of Setup Off Limit Control P PI Control Pulse length Pulse frequency a Off The control function of the controller is off SP1 SP2 function will not appear in setup when Off is selected in CNTR fu...

Страница 39: ...ional to pH mV measured Current output selection 4 20mA or 0 20mA pH mV value for 0 or 4mA current 2 00 to 16 00 pH or 0 to 100 or 1000 to 1000mV pH mV value for 20mA current 2 00 to 16 00 pH or 0 to...

Страница 40: ...ew Terminal 3 5mm pitch Relay 1 Relay 2 Wash Relay Alarm Relay 9 pin Screw Terminal 7 62mm pitch Current Output 1 Current Output 2 12V output Hold function switch 13 pin Screw Terminal 3 5mm pitch Con...

Страница 41: ...ments Order Code pH Differential Electrode with NTC300 thermistor ECFP21A1A1 ORP Differential Electrode with NTC300 thermistor ECFR21A1A1 Note Above pH OR electrodes can withstand a pressure up to 6 b...

Страница 42: ...on whatsoever Customer Service Dept has to be informed in advance Items must be carefully packed to prevent damage during shipment and insured against possible damage or loss Eutech Instruments Oakton...

Страница 43: ...tings Caution Before opening the unit to replace the unit fuse make sure the mains cable is separated from the power supply View from both PCBA side Main Rev 0 2 Alpha pH DO20000W New Main Rev 0 2 par...

Страница 44: ...10 25 10 0 99 4 00 6 92 7 06 9 16 9 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...

Страница 45: ...t point is reached In the reverse direction it does not de activate when the value reaches the set point Instead it continues to be active till the value reaches the amount set by the Hysteresis band...

Страница 46: ...switch Xp 0 Xp 0 0 50 100 Yh Xw Xw SP 2 SP 1 MIN function MAX function 11 4 2 Control characteristic of P Controllers as proportional controller Xp 0 50 100 Yh Xw Xw Xp Prop band Prop band SP 2 SP 1 M...

Страница 47: ...ay of the pulse length controller is clock timed The switching period T remains constant Depending on the divergence from the limit value the switch on time tON is increased or decreased in accordance...

Страница 48: ...the pulse frequency controller is clock timed The pulse duration tON remains constant at 250 msec Depending on the divergence from the limit value the frequency 1 T is increased or decreased in accor...

Страница 49: ...output current 22 mA SP2 Set point 2 WASH Wash LO Low limit H INT Cleaning interval in hours HI High limit S DUR Cleaning duration in seconds HYS Hysteresis CNFG Configuration ON D On delay BKLT Back...

Страница 50: ...ntact your nearest distributor or visit our website listed below Eutech Instruments Pte Ltd Blk 55 Ayer Rajah Crescent 04 16 24 Singapore 139949 Tel 65 6778 6876 Fax 65 6773 0836 E mail marketing eute...

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