MSA General Monitors S4100C, Manual

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Model S4100C
1
1.0 Introduction
1.1 General Description
The General Monitors Model S4100C Smart Transmitter is a highly reliable, self
contained, microprocessor controlled, Hydrocarbon gas monitor with integral 3-digit
readout. The Transmitter is connected to the user’s indicating and shut-down
equipment by means of a screened and armoured cable.
The S4100C is designed to measure and display concentrations of combustible gases
in the range of: 0-100% Lower Explosive Level (LEL), but will continue to display
concentrations up to 120% LEL.
No user adjustments are required. The instrument will record the number of
successful calibrations, compute the sensor output as a % of the new sensor
reference output during calibration and store in non-volatile memory, along with
calibration and setup parameters.
The entire electronics module is fully encapsulated in compliance with the relevant
standards.
The Smart Transmitter’s user interface is menu driven. In addition the instrument may
be addressed via the Dual Modbus RTU serial interface.
The accuracy of the Smart Transmitter depends upon routine re-calibration which
should be carried out at least every 90 days. This procedure is extremely simple and
may be carried out by one person aided by prompts from the digital display.
Calibration may be completed in less than 2 minutes. All calibration parameters are
tested by advanced software routines before being accepted. Any errors detected will
be shown on the digital display by means of an appropriate fault code.
General Monitors is recognised as a leader in the field of gas detection and a team of
experts is always available to provide advice or service as required.