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EUTECH INSTRUMENTS Alpha pH 100 C, Instruction Manual, Page: 23 / 28

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EUTECH INSTRUMENTS Alpha pH 100 C Instruction Manual Download Page 23

22

JP1

Selects the input voltage between 110
VAC or 220 VAC

JP3 & JP4

Selects for pH or ORP mode. Please
refer to Appendix 2A and 2B for the
diagrams

JP2

OPEN

(DEFAULT)

SHORT

Terminals

5 & 6,

8 & 9

6 & 7,

9 & 10

5 & 6,

8 & 9

6 & 7,

9 & 10

Power On

OPEN

CLOSE

CLOSE

OPEN

pH within
setting

OPEN

CLOSE

CLOSE

OPEN

pH
exceeding
setting

CLOSE

OPEN

OPEN

CLOSE

Fuse

Note that there is a fuse internal to the
controller. Before opening the unit,
ENSURE that the power cable is
physically separated from the mains
supply. Replace the fuse with the one
recommended by the manufacturer.

Summary of Contents for Alpha pH 100 C

Page 1: ...pH OR MODE o C SETU READY RELAY ENTER 7 0 Alpha pH 100 C CX pH ORP Controller Transmitter INSTRUCTION MANUAL Technology Made Easy...

Page 2: ...al is subject to change as improvements are made and does not represent a commitment of Eutech Instruments Pte Ltd This instruction manual is written to cover as many anticipated applications of the A...

Page 3: ...nt 10 5 2 1 The CAL PH menu 10 5 3 Changing the Offset 11 5 4 Calibrating for ORP Measurement 12 5 5 Calibrating for Temperature Measurement 12 5 5 1 The CAL C Menu 12 5 5 2 ATC ON OFF 13 5 6 Setting...

Page 4: ...between the pH and ORP mode Some of the features of this Controller are Automatic temperature compensation with PT 100 Manual temperature compensation setting without the temperature probe Push button...

Page 5: ...e HI SET or LO SET relays is activated The MODE key allows you to select between pH or ORP display the temperature display or the SETUP menu display While in one of the SETUP menus it also functions a...

Page 6: ...100 connection 3 No connection 4 No connection The connections for the 12 way screw terminals are from left to right 5 Low Set Relay deactivated position 6 Low Set Relay center pole 7 Low Set Relay a...

Page 7: ...ect the pH electrode to the BNC connector at the back panel Wire up the PT 100 temperature probe to the PT 100 connections see back panel connections Power on the controller and the display automatica...

Page 8: ...e The display shows current measured temperature with ATC or the temperature that was set in MTC mode Press MODE key again and the display toggles to the SEt for SETUP menu Press ENTER key to go into...

Page 9: ...inking 2 Use UP INCREMENT key to enter 1 on the 1st digit of the password Press ENTER once and the second digit will blink Similarly enter the second digit of the password 2 and press ENTER key again...

Page 10: ...CAL PH immediately displays after you press ENTER key while you are in the SEt menu NOTE The user set password is a protection code Thus it is very important to keep this password strictly confidenti...

Page 11: ...he password has been set earlier key in the password using the method described in section 4 1 Press ENTER once to confirm After you set the correct password you can see the CAL and PH displays blink...

Page 12: ...e Remember to rinse the electrode before calibrating to the next solution Minimum two points calibration is recommended For full range accuracy three points calibration is advised This is useful for o...

Page 13: ...d temperature probe in the standard solution for a few minutes 5 When CAL OrP displays you can see the present mV value blinking press or key to adjust the mV value To confirm press ENTER key 6 Press...

Page 14: ...use and keys to adjust the temperature offset of the PT 100 by 5 C Dip the temperature probe into the sample liquid Make sure that the display is set to ATC ON press ENTER and the display now shows t...

Page 15: ...ow the default of 25 o C or the last set value blinking Use and keys to set your desired value Press ENTER to confirm and the display shows CAL Con Note For ATC OFF you can adjust the set temperature...

Page 16: ...to confirm 3 After you set the correct password you see the CAL and PH display blinks alternately Press key twice the display shows Hi SEt blinking alternately 1 Press ENTER key to access the Hi SET...

Page 17: ...blinking 1 Press ENTER key to access the Hi HYS menu and the display shows the last Hi HYS value Use and keys to change the value of the Hi HYS point 2 Press ENTER to confirm the value of the Hi HYS 3...

Page 18: ...alternately 1 Press ENTER key to access the Lo SET menu and the display shows the last Lo SET value Use and keys to change the value of the Lo SET point 2 Press ENTER to confirm the value of the Lo S...

Page 19: ...nge the value of the Lo HYS point 2 Press ENTER to confirm the value of the Lo HYS Press MODE key to exit to the measurement mode You can press MODE key as an ESCAPE key to revert to the measurement v...

Page 20: ...H ORP displayed on the panel display The 4 20 mA current loop can drive a load resistance of no more than 200 If the pH is less than 0 0 pH the current signal will be set to approximately 0 mA If the...

Page 21: ...s band allows you to set an allowable range of fluctuations to prevent the relays from activating and deactivating too quickly See below It is not possible to set the high set point lower than the low...

Page 22: ...Set relay remains inactivated D Reading reaches above Hi SET Hi HYS and the Hi Set relay is activated E The Hi Set relay is inactivated only when the reading falls below Hi SET Hi HYS F Reading reach...

Page 23: ...minals 5 6 8 9 6 7 9 10 5 6 8 9 6 7 9 10 Power On OPEN CLOSE CLOSE OPEN pH within setting OPEN CLOSE CLOSE OPEN pH exceeding setting CLOSE OPEN OPEN CLOSE Fuse Note that there is a fuse internal to th...

Page 24: ...23 Appendix 2A Jumper Positions pH Jumper Positions inside the Controller...

Page 25: ...24 Appendix 2B Jumper Positions ORP Jumper Positions inside the Controller...

Page 26: ...25 Appendix 3 pH Offset Slope 4 0 4 5 7 0 7 5 10 0 10 5 mV Axis pH Axis Current pH curve Adjusted pH curve...

Page 27: ...non isolated Max load 200 Display LED 3 digits Inputs BNC screw terminals Input Impedance 10 12 Input Bias Current 50 pA max at 25 o C Recommended Input Cable Length Less than 5 meters Relays No Of R...

Page 28: ...27 NOTES...

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