MicroSet MS pH 97 User manual

Instruction Manual
pH Indicating Controller
Transmitter
MS pH 97

1. CONTENTS
1. CONTENTS................................................................................................................................ 01
2. INTRODUCTION. ...................................................................................................................... 02
2.1 Item Supplied....................................................................................................................... 02
2.1 Device Identification............................................................................................................ 02
2.2 Reading User Manual......................................................................................................... 02
2.3 Warranty Terms. .................................................................................................................. 02
3. SAFETY INSTRUCTIONS....................................................................................................... 03
3.1 General Instructions............................................................................................................ 03
3.2 Storage Precautions........................................................................................................... 03
4. TECHNICAL SPECIFICATIONS....................................................................................................04
5. INSTALLATION DETAILS ....................................................................................................... 05
5.1 Termination details............................................................................................................. 05
5.2 Connection Diagram.......................................................................................................... 05
5.3 Operating Procedure .……………………………………………………………………06
5.4 Preparation of std. buffer Solution………………………………………………………06
5.5 Key Details………………………………………………………………………………...06
6.CALIBRATION PROCEDURE .......................................................................................................07
6.1 Calibration procedure of pH………………………………………………………….......07
6.2 temp. compensation………………………………………………..……………......……09
6.3 Slop………………………………………………………………………………………….10
6.4 Set point…………………………………………………………………………………….11
7. MODBUS .................................................................................................................................... 14
8. SAFETY WARNING & GENERAL INSTRUCTIONS.......................................................... 16
9. TROUBLE SHOOTING PROCEDURE………………………………………………………17
10. Warranty Card……………………………………………………………………………….. 18

2. Introduction
2.1 Item Supplied:
1. MS pH 97 Indicating controller transmitter
2. User manual
3. Calibration Certificates
Inspection :
Checkformechanicaldamageduetopossibleimproperhandlingduringshipment.
Allclaimsfordamage are tobemadepromptlytotheshipper.
Makesurethescopeofdeliveryandtheinformationonthenameplate
correspondstotheordering information.
2.2 Device Identification:
The Model no. and Specification are found on name plate, located on back side of
device. Check the Model no. & Specifications you have ordered.
MicroSet
MODEL NO. –
SUPPLY
-
OUTPUT -
Sr NO. -
2.3 Reading User Manual:
This manual should be provided to the end user.
Before use, read this manual carefully and compare the instrument specification.
The contents of this manual may be changed without prior notice.
2.4 Warranty Terms:
The terms of this instrument that are guaranteed are described in the quotation. We
will make any repairs that may become necessary during the guaranteed term free of
charge.
Please contact our sales office if this instrument requires 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 meter will be repaired free of
charge or on an at-cost basis.

3. SAFETY INSTRUCTIONS
3.1 General Instructions:
This pH Controller transmitter was carefully calibrated at the factory before shipment. When pH
controller transmitter is delivered, visually check that no damage has occurred during
transportation
Read User manual carefully and understand instructions provided in this manual.
In general, devices 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 nameplate.
Before powering up the instrument, consider the following:
•Has the wiring been carried out correctly.
•Check the supply voltage correct.
•Do not apply power with the signal terminal.
3.2 Storage Precautions:
Storethedevicein adry,dust-freelocation.
Avoidcontinuousdirectsunlight.
Storethedevicein itsoriginalpacking.
Storagetemperature:0to55°C.

4. TECHNICAL SPECIFICATIONS
Instrument Name : pH Indicating Controller Transmitter
Model No. : MS pH 97
Types of input : 1. pH Sensor through BNC
2. from Pt-100 Sensor.
Supply : 230V AC, 50 Hz
Output : 4-20 mA DC, MODBUS RS485
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
Temperature Coefficient : 0.5% per OC
Mounting : Panel
Dimensions : 96 x 96 x 65 mm.

5. INSTALLATION DETAILS
5.1 Terminal Details:

5.3 Operating Procedure:
Connect Instrument to 230V AC, on back panel. Connect pH & pt100 to their respective connectors
Remove Protective cap of the Sensor containing the storage solution (3.8 Molar KCL). Wait for some time. The
Instruments processor is ready for working.
Note: Save the Sensor cap for future use as a storage container and bulb protector when sensor is not in
service. We recommended 3.8M KCL, as the storage solution.
5.4 Preparation of Standard buffer solution:
For chemical analysis it is necessary to calibrate a pH meter with Sensor. On standard buffer solution of 7
pH, 4 pH, 9.2 pH as per your application. Buffers tables are available with chemical suppliers in tables.
Powder or capsule from Dissolve one tablet thoroughly in 100ml distilled or D.M water. Never use tap
water. Store this solution in double cover type bottles. It is supplied to instruments. Mark your date on it.
Note: buffer solution deteriorates after two weeks. Now prepare fresh solution. Always keep buffer solution
in cool place (Do Not Freeze)
5.5 Key Details:
PROGRAM KEY: - This key is used to Calibration and setting of set points.
INCREMENT KEY: - This key is used to 1) See the Temperature / setting of Temperature.
2) Increment the numerical value of any digit,
from 0 to 9, by one at each time.
SHIFT KEY: - This key is used to 1)See the Value of Set points.
2) Shift the cursor to the next digit.
ENTER KEY: - This key is used to 1) Validate the function or value of parameter.
2) See the SLOP

6. CALIBRATION PROCEDURE

Note :

6.2 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.
Note: When you are using manual Temp you must set it before taking pH reading.

6.3 SLOP:
The slope is a conversion that the pH meter uses to convert the electrode signal in mV to pH.
Generally a slope between 90 and 105% is acceptable.

6.4 Set point setting:
1. You can use SPL1 & SPH1 for Low range controlling of pH.
If you entered the pH SPL1 = 3.00 & SPH1 = 4.00. Then in this case relay will get ON when pH
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 entered the 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 = Set point Low 1
SPH1 = Set point High 1
SPL2 = Set point Low 2
SPH2 = Set point High 2
Similarly for setting of set points please refer below flow chart :

You can see the value of Set points

7.MODBUS

Communication parameters of RS485 are:
For checking the Modbus made the connection for respective Terminals.
Communication Protocol
Modbus - RTU
Baud Rate
9600
Data Bit
8
Check Mode
None
Slave ID
Default = 1 ( Range = 1-245)

8.SAFETY WARNING & GENERAL INSTRUCTIONS
1. Read User manual carefully and understand instructions & directions provided in this manual.
2. Installation, connections, commissioning and service shall carry 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 (240 VAC) with proper polarity to the instrument, before Powering ON instrument.
11. TROUBLE SHOOTING PROCEDURE
SYMPTOMS
CAUSE OF FAILURE
ACTION TO BE TAKEN
No display indication
1.Absence of 240 V AC at
terminal block.
2. Loose connection on termination.
1.Check 240 V AC power supply
& rectify the fault.
2.Tight the terminal connections.

9.TEST / CALIBRATION CERTIFICATE
Calibration Date:
ITEM DETAILS
Name : pH Indicating Controller Transmitter
Make : MicroSet
Model : pH 97
Serial No. :
Input :
READING
Standard Buffer
Solution
Observed Reading
Before Calibration
Observed Reading
After Calibration
Observed Reading
After Calibration
mA
Calibrated By,

10.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 purchaser, &the transit risk for such material
will rest with the purchaser.
The warranty is applicable only if the instrument is used within its specification. The
warranty for the replace components will lapse along with that of the main instrument.
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 : pH 97
Serial No. :
For MicroSet Instrumentation & Controls
Seal