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General Monitors S104 User Manual

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The information and technical data disclosed
in this document may be used and
disseminated only for the purposes and to
the extent specifically authorized in writing
by General Monitors.
Instruction Manual 04/97
General Monitors reserves the right to
change published specifications and designs
without prior notice.
Part No. MANS104
Revision J/04-97
Model S104
Combustible Gas
Enhanced Smart Sensor
GENERAL MONITORS
Model S104
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General Monitors S104 Specifications

General IconGeneral
BrandGeneral Monitors
ModelS104
CategoryAccessories
LanguageEnglish

Summary

Introduction

General Description

Overview of the Model S104 Enhanced Smart Sensor assembly for detecting combustible gases.

Features and Benefits

Highlights microprocessor electronics, one-person calibration, 2-digit display, and 4-20mA output.

Applications

Lists typical applications for the Model S104, including platforms, facilities, and storage.

Sensor Assembly

Sensor Signal Processing

Explains the use of a low-temperature catalytic bead to detect combustible gases and convert heat to resistance change.

Power Supply

Details the +24 VDC input and the regulated voltages supplied to internal circuitry.

Control Electronics

Describes the microprocessor-based control system, inputs, and outputs like display and 4-20mA signal.

Installation

Receipt of Equipment

Instructions for checking shipped equipment for damage or discrepancies upon arrival.

Sensor Location Considerations

Guidance on optimal placement, pointing down, avoiding contaminants, and RFI proximity.

Installation Instructions

Covers mounting dimensions, conduit sealing, and preventing corrosion due to moisture.

Terminal Connections

Details the terminal blocks (TB1, TB2) and wiring for power, remote functions, and output signals.

Applying Power

Steps for applying power, checking wiring, and the initial start-up mode indication (SU).

Maintaining X/P Integrity

Explains explosion proof rating factors, gap checks, and proper use of entry holes and plugs.

Operation

Calibration

Describes calibration procedures, recommendations, and checking sensor integrity every 90 days.

Digital Display Codes

Lists and explains codes displayed during start-up, calibration, and normal operation.

Fault Codes & Remedies

Details self-diagnostics, fault codes (F1-F9), and actions for correcting issues and recalibration.

Appendix

Specifications

Details system specifications like sensor type, life, warranty, and monitored fault conditions.

Engineering Documentation

Provides termination and outline drawings for standard and CE marked units.

Ordering Information

Explains configuration codes for calibration signal, display option, sensors, and active channels.

FMRC Approval

Lists FMRC approved sensors and apparatus, and testing criteria for the Model S104.

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