Servomex DF-150E - Sensor in NEMA 7 Enclosure

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Options DF-150E 33

Figure 19: Remote Sensor Bracket Mounting Holes

7.14.2 Sensor in NEMA 7 Enclosure

Figure 20: NEMA 7 Remote Sensor Enclosure and Wiring Pin-out

Main Page

Table of Contents5
Table of Figures7
Cautions8
Explanation of Graphic Symbols8
Important Warnings9
Specifications11
Analyzer Start-Up Procedure15
Charging the Sensor16
Remove the Sensor16
Add Electrolyte17
Re-Install the Sensor17
Making Sample Gas Connections17
Gas Connection18
Making Output Signal Connections18
Powering up the Analyzer19
Additional Capabilities20
Standard Features21
Stable Calibration21
Electrolyte Condition Indicator21
Analog Output22
Options23
Stab-El23
Alarms24
Adjusting Oxygen Alarm Set Points24
Alarm Relays24
Pressure Regulators25
Filter26
Low Flow Indication27
Low Flow Alarm27
Low Flow - Sensor off27
Flow Control Valve28
Stainless Steel Outlet Tubing28
Pump28
Pump Control29
Isolated 4 to 20 Ma Output29
Gas Scale Correction Factor29
Adjusting the Gas Scale Factor Pot for Light Gases (He or H 2 )30
Adjusting the Gas Scale Factor Pot for Gases Heavier than Nitrogen32
Panel Mount34
Rack Mount35
Remote Sensor Installations36
Sensor on Remote Bracket with Optional Pump36
Sensor in NEMA 7 Enclosure37
Sensor in NEMA 4 Enclosure39
Temperature Control in R4/R7 Enclosures40
Sample Gas and Plumbing Cautions41
Normal Operating Conditions41
Condensation/ Liquid Slugs41
Temperature42
Leaks42
Process Up-Sets (Oxygen Shock)42
Reactivity with KOH Electrolyte43
Outputs and Remote Connections45
The I/O Connector46
Alarm 1 and 2 (NC-C-NO)46
To 20 Ma Isolated Output (4-20+, 4-20-)47
Analog Output (Rec + & Rec - )47
Remote Range Indicator (Range Com - Range 1, 2, 3)47
Sensor off (Sensor off Com, Sensor Off)48
DC Common (DC Com)48
Ground48
The Remote Sensor Connector48
Remote Sensor (Sensor +, Sensor -)48
Secondary Electrodes (Sec el +, Sec el -)49
A, B (A, B)49
Flow Switch (Flow SW, Flow SW Com)49
Pump Control Connector49
Pump Control49
Analyzer Control of a Remote Pump50
Remote Control of the On-Board Pump50
Maintenance and Calibration Checks51
Sensor Maintenance51
Restoring Electrolyte Level51
Calibration52
Adjusting Calibration52
Adjusting Calibration (with the Gas Scale Factor Option Installed)53
Cleaning the Analyzer54
Theory of Operation55
Troubleshooting57
Troubleshooting Guide57
Problem Observations57
Remedy Table58
Troubleshooting Considerations59
Gas Pressure Effects59
Positive Pressure Operation59
Negative Pressure Operation59
Temperature Effects on Sensor Performance60
Flow Rate Effects on Sensor Performance60
Replaceable Parts61
Fuse Replacement62
Shipping the Analyzer63

Servomex DF-150E - Sensor in NEMA 7 Enclosure

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