MOS MicroSet MS pH 97 User manual

MANUAL
MS pH 97
pH INDICATING CONTROLLER
TRANSMITTER

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INDEX
Content Page No.
1. INTRODUCTION 04
2. SAFETY INSTRUCTIONS 05
3. TECHNICAL SPECIFICATION 06
4. TERMINAL CONNECTIONS 07
5. KEY DETAILS 07
6. CALIBRATION PROCEDURE 08
7. TEMPERATURE COMPENSATION 10
8. SLOPE 11
9. SETPOINT 11
10. MODBUS RS485 (optional) 14
11. SAFETY WARNING 15
12. TEST / CALIBRATION CERTIFICATE 17
13. WARRANTY CERTIFICATE 19

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1. INTRODUCTION
Item Supplied :
1. pH Indicating Controller Transmitter MS pH 97
2. Manual
3. Calibration Certificate (Page No. 17 of manual)
4. Test / Warrantee Certificate (Page No.19 of manual)
Inspection :
Check for mechanical damage due to possible improper handling during shipment.
Allclaimsfordamage are tobemadepromptlytotheshipper.
Device Identification :
The Model No. is mentioned on the front plate of the instrument. Terminal
configuration and Serial Number are mentioned on the back plate of the
instrument.
Warranty Terms :
The terms of this instrument that are warranted are described in the techno
commercial offer. We will make any repairs that may become necessary during
the warrantee term free of charge against manufacturing defects only.
Please contact us if this instrument requires any repair.
If the instrument is faulty, contact us with concrete details about the problem and
the length of time it has been faulty, and state the model and serial number. We
would appreciate the inclusion of images or additional information.
The results of our examination will determine whether the indicator will be repaired
free of charge or on an at-cost basis

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2. SAFETY INSTRUCTIONS
General Instructions :
This pH Indicating Controller Transmitter was carefully calibrated at the factory before
shipment. When pH Indicating Controller Transmitter is delivered, visually check that no
damage has occurred during transportation.
Read this Manual carefully and understand instructions provided herein.
In general, instruments from the manufacturer may only be installed, commissioned,
operated and maintained by properly trained and authorized personnel.
Look at the ordering detail to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the back plate.
Before powering up the instrument, consider the following:
1. Check if the supply voltage is correct.
2. Do not give power supply to any other terminal.
Storage Precautions :
Store the device in a dry, dust-free location.
Avoid continuous direct sunlight.
Store the device in its original packing.
Storage temperature: 0 to 55°C.

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3. TECHNICAL SPECIFICATIONS
Instrument Name pH Indicating Controller Transmitter
Make MicroSet
Model No MS pH 97
Types of Input 1. pH Sensor through BNC
2. RTD PT 100 Temp. Sensor through
Terminals 3 & 4
Supply 230V AC, 50 Hz
Output 4-20 mA DC, MODBUS RS485 (Optional)
Temperature Compensation Manual / Auto through PT 100
Range 0-149.9 OC
Accuracy ± 0.01 pH
Calibration 2 and 3 Point Calibration
Display 4 digit LED display
Sensitivity ± 0.01 pH
Response Time < 1 Sec
Mounting weatherproof
Dimensions 120 x 200 x 75 mm

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4.TERMINAL CONNECTONS
1. Connect Power Supply 230 V AC to Instrument on back plate at Terminals 16, 15, 14(L,N,E).
2. Connect pH Sensor to BNC Connector on back plate.
3. Connect RTD PT 100 Temperature Sensor (if required) to Terminals 3 & 4 on back plate.
(Please connect RTD PT100 Temperature Sensor AFTER Calibration Procedure.)
4. Connect 4- 20 mA retransmission output at Terminal 5, 6( - , +).
5. Connect RS485 RTU retransmission output at Terminal 7,8(B, A).
5. KEY DETAILS

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6. CALIBRATION PROCEDURE
Before starting Calibration Procedure, make sure Temperature is in Manual Mode at 25°C
(When RTD PT100 Temperature Sensor is NOT connected, Temperature is in Manual Mode)
Remove Protective cum storage cap of pH Sensor contaning Storage Solution.

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7. TEMPERATURE COMPENSATION
When RTD PT 100 Temperature Sensor is Connected, pH Indicating Controller Transmitter MS
pH 97 automatically goes in Automatic Temperature Compensation Mode.
When RTD PT 100 Temperature Sensor is Not Connected, pH Indicating Controller Transmitter
MS pH 97 is in Manual Temperature Compensation Mode.
For Temperature Display :
For Temperature Setting in Manual mode:

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8. SLOPE
Slope indicates health of pH Sensor. Generally slope between 70 and 115% is
acceptable. If slope is below 70% or above 115%, you need to change the pH Sensor.
9. SETPOINT
1. You can use SPL1 & SPH1 for Low range controlling of pH
If you enter SPL1 = 3.00 & SPH1 = 4.00,
Then in this case Relay will get ON when pH value goes below 3.00 pH & Relay will get OFF
when pH value goes above 4.00 pH
2. You can use SPL2 & SPH2 for High range controlling of pH
If you enter SPL2 = 7.00 & SPH1 = 8.00,
Then in this case Relay will get ON when pH value goes above 8.00 pH & Relay will get OFF
when pH value goes below 7.00 pH
Denotations :
SPL1 = SetPoint Low for RL-1
SPH1 = SetPoint High for RL-1
SPL2 = SetPoint Low for RL-2
SPH2 = SetPoint High for RL-2

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Similarly for setting of Setpoint SPH2, SPL2, SPH2. please refer below flow chart :

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10. MODBUS RS485 (Optional)
This pH Indicating Controller Transmitter MODBUS communication is based on RS485 RTU.
User can set the salve ID as per the requirement with following Specification,
Baud Rate
9600
Slave ID
1 (default)
Start Bit
1
Data Bit
8
Parity
NONE
Stop Bit
1

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10. SAFETY WARNING
1. Read Manual carefully and understand instructions & directions provided in this manual.
2. Installation, connections, commissioning and service shall be carried out by only qualified and
authorized person.
3. To protect instrument from any external hazards, customer should take necessary care while
preparing site ready before installation.
4. Ensure proper supply voltage (230 VAC) with proper polarity to the instruments, before Powering
ON instrument.
TROUBLE SHOOTING PROCEDURE
SYMPTOMS
CAUSE OF FAILURE
ACTION TO BE TAKEN
No display indication
1.Absence of 230 V AC at
terminal block.
2. Loose connection on
terminals.
1.Check 230 V AC power
supply & rectify the fault.
2.Tight the terminal
connections.

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10. TEST / CALIBRATION CERTIFICATE
Calibration Date: __ __ / __ __ / 2 0__ __
ITEM DETAILS
Name : pH Indicating Controller Transmitter
Make : MicroSet
Model : MS pH 97
Serial No. : __ __ __ __ __
Input : pH Simulator
pH Sensor Model : MS pH ___ SN : __ __ __ __
READING
Standard Buffer
Solution
pH
Observed
Reading Before
Calibration
pH
Observed
Reading After
Calibration
pH
Observed
Reading After
Calibration
mA
7.00
4.00
Relay RL –1 Working OK YES
Relay RL –2 Working OK YES
Calibrated By,
Seal

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11. WARRANTEE CERTIFICATE
MicroSet warrants each instrument to be free from defects in material & workmanship. This
obligation to servicing or part returned to the company for that purpose & making good any parts
thereof which shall be within warranty period, returned to the company under a written intimation &
which to the company’s satisfaction to be found defective. The company reserves the right to
decide the workplace for the repair work. The freight for defective material will have to be borne by
the buyer, & the transit risk for such material will rest with the buyer.
The warranty is applicable only if the instrument is used within its specification.
THIS WARRANTY IS VALID UP TO 12 months from date of Tax Invoice (Sensors Carry No
Warranty since Consumables)
ITEM DETAILS
Name : pH Indicating Controller Transmitter
Make : MicroSet
Model : MS pH 97
Serial No. : __ __ __ __ __
For MicroSet Instrumentation & Controls
Seal
Authorized Signatory