Conductivity Monitor Model

Operating Instructions

1.Introduction

Conductivity monitor CM-230, updated based on CM-230, provides advanced measurement and temperature compensation via MCU.  With easy operation and complete function, it is widely used in reverse osmosis to desalinate seawater and electronic micro filter.

2.Features

1)Automatically reversible measurement range

2)Automatically adjustment to zero

3)Simultaneous viewing of conductivity and temperature values

4)Input electrode coefficient on the panel

3.Technical Specifications

1)Measurement range: 0-1999µS/cm

Automatically reversible measurement range: 0-19.99µS/cm, 0-199.9µS/cm and 0-1999µS/cm

Temperature compensation: automatic temperature compensation, compensation range 0-60℃, compensation point 25℃, compensation coefficient 2.0%/℃

3)Display: 3.5 digits 0.56’’ Backlight LCD for conductivity display

4)Accuracy:  ± 2% (F·S)

5)Electrode:  1.00cm-1plastic platinum holder, 4’ tube connected by screw, cable length 5m

6)DC 4-20mA output: upper value can be set under the condition of 20mA

7)Power supply: 220 VAC ± 10%, 50Hz

8)Dimensions: frame dimension: 96×48 (mm), panel dimension: 91×45 (mm), depth: 100 (mm)

9)Testing standard: Q31/0114000321C004-2016

4.Front Panel

1.  Power input terminal1: 220V, terminal 2: 0V, terminal 3: earth

2.  Electrode terminal 6: RED [T(R)], terminal 7: Violet [CELL(V)], terminal8: YELLOW [NET(Y)], terminal 9: Green [CELL(G)]

4.  Operating Instruction

1)        Put the instrument on the working table and fix the display unit.

2)        After correctly connecting the electrode wire, power supply wire, input wire and output wire according to the diagram of wire connection on back panel, connect the power supply.

3)        Put the electrode into the tube with water, then power on.

4)        Coefficient set:

4.1) Press SET key, C=X.XXX will be displayed.

4.2) Press“↔”key, move the point.

4.3) Press“↕”key, change the displayed value unless it is the coefficient. (Coefficient is on the electrode lead wire.)

Note:

Ø   That the last figure is flashing means it is under SET.

Ø   Press SET key to enter into the below function window.

1.      Attentions

1)   The cable for testing the electrode should be special cable. If it is longer than factory length (5m), please confirm the length when place the order. For a good measurement accuracy, please remember to use special cable.

2)   The measurement signal for conductivity is weak. In order to avoid interference or break the meter, the electrode cable should not be bound with any other cables.

3)   Absolutely correct connection is the must, as the meter is sensitive.

4)   Relay is preferred for alarm output to secure the safe working.

1x meter