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YOKOGAWA SC200 User Manual
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IM 12D7B2-E-H
Wiring diagrams for hazardous areas
10
Intrinsically safe design
(CELENEC standard EEX ib [ia] IIC T4)
Conductivity transmitter
EXA SC200S
EEx ib
certified safety
barrier
Distributor
Output
Sensor
Elektronic current
Limiting barrier
Vmax: 31.5
V
lmax
: 35
mA
Pmax:
0.66
W
Zener barrier with
resistor
Vmax: 28
V
lmax
: 93.3
mA
Pmax:
0.66 W
Protective earth
Safe area
Protective earth
Hazardous area
Supply
Zone 0 of 1
Zone 1
Eex ib
Certified distributor with
input/output
isolation
Output
Sensor
Shunt zener-
barrier or
supply unit or
isolated
repeater
Vmax: 22 V
Imax
: 85 mA
Protective earth
Safe area
Hazardous area
Supply
Zone 0 of 1
Zone 1
Intrinsically safe design
(CELENEC standard EEX ib [ia] IIC T4)
Conductivity transmitter
EXA SC200S
13
15
Table of Contents
Default Chapter
3
Table of Contents
3
1 Introduction
5
Application
5
Required Components for Conductivity Measurement
5
Identification
5
2 Technical Specifications
6
General Technical Specification
6
Functional Description
7
3 Installation and Wiring
8
Installation and Dimensions
8
Installation Site
8
Mounting Methods
8
Wiring of Sensors
10
General Precautions
10
Additional Precautions for Installations in Hazardous Areas
10
Grounding the Liquid
10
Access to Terminal and Cable Entry
10
Connecting Diagram for Sensors
11
Wiring of Power Supply
12
General Precautions
12
Additional Precautions for Installation
12
In Hazardous Areas
12
Access to Terminal and Cable Entry
12
Power on
12
4 Commissioning
15
Operations Overview
15
Output Range Adjustment
16
Set up Hold Function
18
Temperature Compensation
20
Sensor Selection and Diagnostics
22
5 Maintenance
24
Calibration
24
Selecting a Value to Display
26
Use of the Hold Function
28
6 Trouble Shooting
30
Introduction
30
Error Messages and Explanation
31
7 Service Mode
32
Introduction
32
Access to Service Settings
33
Temperature Sensors and Units
34
Reference Temperature
34
Output Code Selection
34
Output Table for Non-Linear Range
35
Cell Constant Adjustment
36
Auto Return Function
36
Measuring Principle
36
Temperature Sensor Adjustment
36
Signalling of Fail Condition
37
Temperature Compensation Coefficient Adjustment
37
Percent by Weight Indication on Second Display Line
38
Polarisation Check
38
Passcode Protection by Three Digit Code
39
Restore Default Setting
39
Non Linear Ranges
40
8 Classification
40
Cenelec
40
9 Change from Conductivity to Resistivity Measurement
42
How to Change from Conductivity to Resistivity Measurement
42
Resistivity Measurement
42
Maintenance of the Transmitter
42
10 Software Version 3.0 Compared to Versions 1 and 2
43
Cell Constant
43
Matrix Compensation
43
Matrix Temperature-Compensation Range
44
Matrix Data
44
Selection between "Soft" or "Hard" Fail Situations
45
Selection between Yes or no E6 Fail-Message
45
Matrix Examples
46
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YOKOGAWA SC200 Specifications
General
Brand
YOKOGAWA
Model
SC200
Category
Transmitter
Language
English
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