Thermo Scientific ALPHA PH 2000 Manual Download Page 54

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11.4.5 Controller signal of Pulse Frequency Controllers

OFF

Pulse Length T

Relay

OFF

Time [s]

The output relay of the pulse frequency controller is clock-timed. The pulse
duration t

remains constant at 250mS. Depending on the divergence from

the limit value, the frequency

(1/T)

is increased or decreased in accordance

with the proportional range Xp.

The following applies:

= Const. (250 msec.)

greater divergence

greater f (greater frequency)

Xp exceeded

max. frequency

Summary of Contents for ALPHA PH 2000

Page 1: ...Alpha pH 2000 Processor Transmitter pH ORP ...

Page 2: ...nk 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 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 electrodes are protected by U S patent 6 168...

Page 3: ...d applications of the Alpha pH 2000 pH ORP controller transmitter If you have doubts in the use of the instrument please do not hesitate to contact your nearest Alpha Authorised Distributor The information presented in this manual is subject to change without notice as improvements are made and does not represent a commitment on part of Thermo Scientific Thermo Scientific cannot accept any respons...

Page 4: ...e 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 make sure that the power to the unit is off and disconnected The unit is Fuse protected In the event the fuse has to be replaced use only those as specified in the manual The degree of protection agai...

Page 5: ...5 4 ORP CALIBRATION 18 5 5 VIEW ACTUAL ZERO AND SLOPE 19 6 SET UP MODE 20 6 1 ENTER SETUP MODE 20 6 2 ELECTRODE OFFSET OFS SUB FUNCTION 21 6 3 SETTING TEMPERATURE SET O C SUB FUNCTION 22 6 4 CONTROL RELAY A CONTROL RELAY B SP1 SP2 SUB FUNCTION 23 6 5 CONTROLLER CNTR SUB FUNCTION 25 6 6 CURRENT OUTPUT 1 SUB FUNCTION 27 6 7 CURRENT OUTPUT 2 SUB FUNCTION 28 6 8 WASH RELAY WASH SUB FUNCTION 29 6 9 CON...

Page 6: ...STERISIS 44 11 4 APPENDIX 4 GENERAL INSTRUCTIONS CONCERNING CONTROLLER SETTING 45 11 4 1 Control characteristic of Controllers used as limit value switch 45 11 4 2 Control characteristic of P Controller as proportional controller 45 11 4 3 Control characteristic of PI Controller as a proportional integral controller 45 11 4 4 Controller signal of Pulse length Controllers 46 11 4 5 Controller signa...

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Page 8: ...fficient 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 If you have questions which are not or insufficiently answered in this instruction manual please contact your Eutech Instruments supplier They will be glad to assist you 1 2 Intended use The Alpha pH 2000 pH ORP Control...

Page 9: ...ransmitter 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 Alpha pH 2000 are allowed The manufacturer supplier accepts no responsibility for damage caused by unauthorised modifications The risk is borne entirely by the user 1 4 Putting out of service Correct disposal of the unit Putting out of service ...

Page 10: ...he ATC probe with independent setting for calibration and process temperature Two galvanically isolated current outputs 0 4 20mA 0 to 1999 seconds time delay adjustment on all relays minimizes 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 mode of operation Three control mo...

Page 11: ...d or separate temperature sensor Pt 100 1000 an appropriate pH or ORP measurement cable an immersion flow or process assembly with or without a potential matching pin PMP a final control element such as pump or valve a chart recorder Power Mains 220 110 VAC Flow Assembly Measurement Cable Process Assembly with Electrode Chart Recorder pH Controller ...

Page 12: ...2 3 Unit Overview Wall mounting version Panel mounting version ...

Page 13: ...p atc m v h ready err O f 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 function group of Set up mode Confirm store set up parameters and numerical values Start calibration in Calibration mode Select function group in the Set up mode Set parameters and numerical values if key is presse...

Page 14: ...easured 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 is on 2 3 3 Security codes The access to Calibration mode Setup mode and Manual relay operation mode is protected with security codes The security codes are set at the factory and cannot be changed by the user The follow...

Page 15: ...on 6 4 Relay B set point 2 settings see section 6 4 Controller settings see section 6 5 Current output 1 settings see 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 CAL ENTER ENTER CAL CCD 000 Check calibration parameters View only mode CCD 11 Calibration mode SCD 000 Check setup parameters View on...

Page 16: ...5 39 1 54 Holes for wall mounting 2X 21 5 85 6 24 144 5 67 144 5 67 78 3 07 111 50 4 39 27 5 1 08 24 94 66 5 2 62 80 3 15 90 3 54 57 8 2 28 90 3 54 Pg13 5 3 pcs Holes for post mounting 4X For Pg13 5 cable glands Unit MM INCH Transmitter housing for wall mounting protection class IP 65 ...

Page 17: ...Panel mounting version Flat gasket 1mm 04 to be inserted by customer Panel cut out UNIT MM INCH Transmitter housing for panel mounting protection class IP 54 front IP 40 housing ...

Page 18: ...ion 6 Alarm relay NC 22 Earth ground 7 Wash relay 23 no connection 8 Wash relay 24 Temperature ground 9 Relay B SP 2 25 Temperature input 10 Relay B SP 2 26 Temperature sense short to 11 Relay A SP 1 terminal 25 if using 2 wire RTD 12 Relay A SP 1 27 PMP liquid ground in symmetrical mode 13 Hold function 28 4 20 mA temperature output ve terminal 14 Hold function 29 4 20 mA temperature output ve te...

Page 19: ...or circuit breaker shall included in the building installation It shall be in close proximity to the equipment and within easy reach of the operator It shall be marked as the disconnecting device for the equipment ...

Page 20: ...P 1 27 PMP liquid ground in symmetrical mode 13 Hold function 28 4 20 mA temperature output ve terminal 14 Hold function 29 4 20 mA temperature output ve terminal 15 no connection 30 4 20 mA pH output ve terminal 16 no connection 31 4 20 mA pH output ve terminal IMPORTANT The Alarm relay functions as an Active Low device i e it switches OFF under Alarm condition Therefore the Alarm display device ...

Page 21: ...e 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 whether the controller is set for pH mV or ORP measurement From Measurement mode you can access Calibration mode and Setup mode by pressing the CAL key or ENT key followed by the corresponding security code For...

Page 22: ...s the or key to set the calibration security code to 11 then press 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 to confirm the security code then press the or key to select the calibration sub function If configured for pH control the display shows C...

Page 23: ...the temperature probe in the buffer solution Likewise for symmetrical mode you must also immerse the potential matching pin in the buffer 4 You can conduct either a one point or a two point calibration Press the ENT key for two point calibration or the CAL key for one point calibration The electrode indicator and CAL indicator both flash The controller automatically adjusts the reading to match th...

Page 24: ...ration temperature and the process temperature see section 6 3 5 3 ORP mV Calibration If controller is configured for ORP mV measuring you can perform only a one point calibration meas SETUP HOLD CAL HOLD MV CAL HOLD MV CAL 250 250 1 Enter Calibration mode as described in section 5 1 The display should read CAL ORP Note If the display reads CAL PH see section 6 9 for procedures on how to switch fr...

Page 25: ...ration sample then press the ENT key The electrode and CAL indicators flash The unit automatically adjusts its reading to match the solution value 4 The display prompts you to place the sensor in the low concentration sample relative value of 20 Remove the electrode from the first standard wash it well and then immerse it in the 20 standard 5 When the display stabilizes press the ENT key The CAL i...

Page 26: ...o enter a security code Leave the security code at 000 view only mode 2 Press the ENT key The display shows the slope in mV upper value and the pH reading at 0 mV zero point lower value Note If no key is pressed for 30 seconds the transmitter automatically returns to the Measurement mode 3 Press the ENT key to return to the Measurement mode ...

Page 27: ... Relay B set point 2 settings see section 6 4 Controller settings see section 6 5 Current output 1 settings see 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 CAL 1 While in Measurement mode press the ENT key 2 The display prompts you to enter the security code Set the security code with or key to ...

Page 28: ... 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 then press the ENT key SETUP HOLD PH SETUP HOLD PH 4 The display shows the current measured pH value lower value and the current offset value upper value Press the or key to adjust the pH value noted in Step 2 A...

Page 29: ...5 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 9 9 to 125 C 15 to 257 F Press the ENT key to confirm process temperature 5 Setting calibration temperature press the or key to adjust the calibration temperature upper value setting range 9 9 to 125 C 15 to 257 F Press the ENT k...

Page 30: ...ect LO to activate the relay when the pH ORP value undershoots the set point select HI to activate the relay when the value overshoots the set point SP1 and SP2 can be selected as Lo Lo Lo Hi Hi Lo or Hi Hi 4 Setting a hysteresis value press the or key to select the desired hysteresis setting ranges 0 1 to 1 0 pH 10 to 100mV or 1 to 10 for set point 1 set point 2 Press the ENT key to confirm your ...

Page 31: ... the or key to enter the off delay time for set point 1 set point 2 Your controller will delay deactivation of the relay for the number of seconds 0 to 1999 you select Press the ENT key to confirm your setting Note You can set a time delay for each relay which stops the relay from switching off the moment the value reaches the set point and hysteresis This controller lets you set a 0 to 1999 secon...

Page 32: ...LD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD off SETUP HOLD l ct SETUP HOLD pfc SETUP HOLD plc SETUP HOLD p pI 1 2 2 2 3 3 4 4 5 6 ENT ENT ENT ENT ENT ENT ENT ENT ENT ENT ENT ENT ENT ENT ENT 1 Select the CNTR sub function then press the ENT key 2 Selecting the controller type press the or key to select the suitable controller type ...

Page 33: ...control PFC pulse frequency control Press the ENT key to confirm your selection If the proportional controller type is set to pulse length control PLC 5 Selecting the relay status under Non Alarm condition press the or key to choose the desired relay status de energized DEEN or energized EN Press the ENT key to confirm your selection 6 Setting the proportional range Press the or key to set the pro...

Page 34: ...UP HOLD 1 cur 1 SETUP HOLD ENT ENT ENT ENT ENT ENT ENT ENT 1 Select the CUR 1 sub function then press the ENT key 2 Selecting the output type press the or key to select the desired output type 0 20 mA or 4 20 mA Press the ENT key to confirm your selection 3 Setting the pH or ORP value at which the transmitter output will be 4 mA or 0 mA press the or key to set the pH or ORP value to be equivalent ...

Page 35: ...e ENT 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 9 9 to 115 C or 15 to 237 F to be equivalent to 4 mA or 0 mA Press the ENT key to confirm your setting 4 Setting the temperature value at which the transmitter output will be 20 mA press the or key to set the temperatur...

Page 36: ... 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 199 9 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 1999 seconds Press the ENT key to conf...

Page 37: ...7 8 SETUP HOLD SETUP HOLD SETUP HOLD SETUP HOLD MEAS PH O C ENT ENT ENT ENT 6 7 8 8 1 Select the CNFG sub function then press the ENT key 2 Enabling disabling the display backlight press the or key to switch display backlight on BKLT ON or off BKLT OFF Press 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 int...

Page 38: ...s when the set point has been exceeded 6 Selecting the alarm contact type press the or key to select the alarm contact type STDY steady contact FLET fleeting single pulse contact Press the ENT key to confirm your selection Note With this parameter you select whether the alarm contact will operate as a steady contact or a fleeting single pulse contact Pulse contact closing time is 1 second 7 Select...

Page 39: ...ith ENT Press the ENT key The selected function will be executed and the controller returns automatically to the Measurement mode Continue with Setup mode procedures or return to Measurement mode by pressing the and keys simultaneously escape 6 9 Calibration CAL sub function The calibration procedure in Setup mode is identical to the procedure in the Calibration mode see section 5 The only differe...

Page 40: ...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 lights 8 2 PH After two seconds the display shows the set point value for Relay B and LED B lights off After two seconds the display shows the status of the Wash relay and LED W lights If Wash relay is off the display s...

Page 41: ...f 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 length control The display shows the current measured value upper value and the on time as a percentage of the current duration set in the CNTR sub function in setup mode lower value PH SETUP HOLD o If you sel...

Page 42: ... Integral time 0 to 999 9 minutes Adjustable period with pulse length controller 0 5 to 20 sec Adjustable period with pulse frequency controller 60 to 120 pulses min Pickup Dropout Delay 0 to 1999 seconds Wash Cycle 0 1 to 199 9 hours Wash Duration 1 to 1999 seconds Switching pH Hysteresis 0 1 to 1 pH Switching ORP Hysteresis 1 to 10 0 10 to 100 mV Contact Outputs Controller 1 SPDT 3 SPST relays S...

Page 43: ...e Pollution Degree 2 Transient Overvoltage category II 8 2 Specifications for wall mount version Electrical Data and Connections Signal output Two 0 4 to 20 mA outputs for pH mv and temperature galvanically isolated Load Max 600 Ω pH ORP Input BNC 1012 Impedance Connection terminal 1 x 3 pins 8 pin 9 pin 13 pin terminal blocks Mechanical Specification Dimensions 144 x 144 x 111 5 mm 5 67 x 5 67 x ...

Page 44: ...for pH mv and temperature galvanically isolated Load Max 600 Ω pH ORP Input BNC 1012 Impedance Connection terminal 1 x 3 pin 1 x 9 pin 1 x 19 pin terminal blocks Mechanical Specifications Dimensions 175 x 96 x 96 mm 6 89 x 3 78 x3 78 inch Weight 550g unit 950g boxed Material ABS Insulation IP 54 front IP 40 housing ...

Page 45: ...100GTSO05B pH Combination Electrode with HF resistant glass w o ATC PMP ECARTSOHF05B pH Combination Electrode with PMP w o ATC ECARGTSO05B pH Combination Electrode with high temperature resistance 110 o C and high pressure resistance 9 bar w o ATC PMP ECARHTTSO05B pH Combination Electrode w o ATC PMP ECARTSO05B ORP Gold Electrode with PMP but w o ATC ECHTAUTSO05B ORP Platinum Electrode with PMP bu...

Page 46: ...f the products 10 2 Packaging The instrument is packaged in a corrugated box with a warranty card instruction manual and the following accessories Wall mount version Plug nylon black 2 pcs PG 13 5 cable gland 3 pcs Connectors 1 each of 3 way 5 08 mm 9 way 5 08 mm 13 way 3 5 mm 8 way 3 5 mm Panel mount version Rubber Gasket 1 pc Catch 2 pcs Rod thread 2 pcs Connectors 1 each of 3 way 5 08 mm 9 way ...

Page 47: ...f any faults suspected for the convenience of Customer Service Dept if possible 10 5 Maintenance and Cleaning Maintenance The Alpha pH 2000 contains no user repairable components Please contact Eutech Instruments or its distributor if there is any problem with the unit Cleaning To remove dust dirt and spots the external surfaces of the controller may be wiped with a damp lint free cloth A mild hou...

Page 48: ... L9 BR1 U5 220K 220K 220K 220K L5 L4 L2 L1 L3 C44 C43 C45 C53 C54 C55C52 TS9 TS11 K1 K2 C123 R34 R34 C122 Q6 Q10 R8 R9 C8 R7 C12 C10 C9 Z1 REG5 C109 REG4 REG3 REG2 R83 R85 R84 C75 R102 R103 C110 C99 C111 U2 Q15 TS8 F1 L13 TS13 K4 TS12 R92 C81 1003 R28 U13 C120 Z4 C82 C95 C88 C86 C87 C85 C90 C89 C84 R101 R100 C106 D11 D12 D13 C105 D15 C104 C93 C100 T1 C94 C92 C91 C103 C107 C2 C1 X1 D14 R10 C102 C10...

Page 49: ...TS13 F1 TS1 C28 Fuse 250V 250mA Antisurge U6 C57 C40 J3 TS13 C34 R39 REG2 R43 C49 Q3 R41 R40 C38 Z2 C48 R42 C39 C53 C36 C37 REG4 C54 D11 C58 T1 R74 C28 C29 C30 L1 C31 TS5 K5 BR1 J11 R72 R6 9 R67 R6 6 C76 D12 D13 R57 K2 C77 TS2 K1 C75 R53 R75 R76 R62 R59 R60 R56 Q6 C80 Q7 D15 D14 R65 R82 R81 C83 R58 C78 R55 R54 Q5 R55 R51 Q 501 R78 R71 Q9 R70 C74 Q4 R50 Q8 R 10 6 TS11 C41 C42 C44 C43 C62 C52 C51 C5...

Page 50: ... 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 35 1 01 4 02 6 84 6 98 8 91 9 10 9 93 40 1 01 4 03 6 84 6 97 8 88 9 07 9 89 45 1 01 4 04 6 83 6 97 8 85 9 04 9 86 50 1 01 4 06 6 83 6 97 8 82 9 01 9 83 55 1 01 4 08 6 83 6 97 8 79 8 99 9 81 60 1 02 4 10 6 84 6 98 8 ...

Page 51: ...pH FORWARD DIRECTION REVERSE DIRECTION SP1 SP2 RELAY ON 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 value reaches the set point Instead it continues to be active till the value reaches the amount set by the Hysteresis band ...

Page 52: ...on MAX Function Xp 0 Xp 0 SP 1 SP 2 Xw Xw Yh 0 50 100 11 4 2 Control characteristic of P Controller as proportional controller MIN Function MAX Function Xp Prop Band Xp Prop Band SP 1 SP 2 Xw Xw Yh 0 50 100 11 4 3 Control characteristic of PI Controller as a proportional integral controller SP1 SP 2 10 Proportional band XP Prop band XP 20 25 100 50 ...

Page 53: ...ength 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 with the proportional range Xp The following applies tON tOFF T Const greater divergence Î greater tON Xp exceeded Î tON T relay remains picked up ...

Page 54: ...uency controller is clock timed The pulse duration tON remains constant at 250mS Depending on the divergence from the limit value the frequency 1 T is increased or decreased in accordance with the proportional range Xp The following applies tON Const 250 msec greater divergence Î greater f greater frequency Xp exceeded Î max frequency ...

Page 55: ...g interval in hours HI Hi Limit S DUR Cleaning duration in seconds HYS Hysteresis CONF Configuration ON D On delay BKLT Back light OFF D Off delay LEVL Level CNTR Controller PH SY Symmetrical pH mode L Ct Limit control PH ASY Asymmetrical pH mode PLC Pulse Length Control ORP SY Symmetrical ORP mode PFC Pulse Frequency Control ORP ASY Asymmetrical ORP mode P PI Proportional control AL D Alarm delay...

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