Applications And Accessories; Smart Sensors; Figure 63 - S4100C Smart Sensor - General Monitors TA102A Instruction Manual

6.2

Applications and Accessories

This chapter provides a description of the types of field devices (Smart Sensors, Point
IR Detectors) and the accessories, which can be used with the Model TA102A.

6.2.1 Smart Sensors

Generally speaking, General Monitors field devices fall into two categories:
• Smart Sensors
• Point IR Detectors
There are different types of General Monitors Smart Sensors.
The Model S4100C (figure 63) is a Smart Sensor that was developed for Combustible
gas applications. These feature
• a 4 to 22mA output that is proportional to the gas concentration at the sensor
• they are 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.
The Model S4000C (figure 64) is an Intelligent Sensor for the detection of combustible
gases and vapors. The microprocessor-based electronics process information at the
sensor site, within an explosion-proof housing.
A digital display provides indications and display codes that can be viewed through a
window in the cover. A red LED above the digital display signifies an ALARM condition,
while a red LED below the digital display signifies a WARN condition. Analog signal (4-
20mA) and optional Dual Redundant Modbus communications and relays, provide
remote and/or discrete indications of the sensor's operation.
The Model S4000C Intelligent Sensor is rated explosion-proof for use in hazardous
areas.
Figure 63 – S4100C Smart Sensor
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Model TA102A