Sierra Monitor Corporation Gas Sensor Modules 4101, 4101 Series Specifications
The Model 4101 Series Gas Sensor Modules
feature accurate detection of the specified
gas with linear 4-20 mA output.
The Sierra Monitor Model 4101 Series provides the user
with the features needed in a stand-alone, fixed-point
hazardous gas monitor system. Utilizing electrochemical
sensor technology the Model 4101 provides accurate
monitoring of hazardous gas conditions. Proven sensor
design matched with reliable state-of-the-art electronics
results in the ideal complete single channel package to
protect your plant and personnel.
Model 4101 Series
Gas Sensor Modules
Automatic Low Sensitivity Check
Monitoring integrity is ensured with the automatic low
sensitivity check. After calibration, a sensor sensivity check
confirms that the sensor response to gas is sufficient to
provide reliable operation without false indication. If the
sensor has low sensitivity, an LED lights to indicate that
sensor replacement is due.
False Alarm Avoidance
During Power-Up and Calibration, the transmitter output is
locked at 4 mA. The output remains locked for five minutes
directly after power is applied or after calibration gas is
removed, allowing sufficient time to fully stabilize before
coming on-line. This avoids erroneous readings during
warm-up and prevents alarm caused by calibration gas.
Convenient Diagnostic Measurements
Critical measurements are made at convenient jacks for a
Volt Ohm Meter. Each measurement location is clearly
marked. All modules have a signal output adjustment.
Simple Zero and Span Adjustments
Easily accessible potentiometers enable calibration
adjustments to be made in minutes by non-technical
personnel for reduced maintenance cost.
Flexible Alarm and Logging Options
The analog gas sensor modules can be used as part of a
facility gas risk management plan. The 4-20 mA output
signal is ideally suited to interface with a wide range of
instrumentation for alarm annunciation and recording.
The sensor module is housed in a NEMA-7 enclosure rated
for Class 1, Division 1, Groups C, D environments. An
optional NEMA 4 Group B enclosure is available.
Be sure to also look at the 5100-XX-IT Series Intelligent
Gas Sensor Modules for network-enabled hazardous gas
monitoring.
Sierra Monitor Corp. 1991 T arob Ct., Milpitas, CA 95035, USA, 408-262-661 1, 800-727-4377, F AX: 408-262-9042
Web Site: http://www.sierramonitor.com E-Mail: sales@sierramonitor.com
4101-16 - 22/27
Specifications
Gas Sensor Modules
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Sierra Monitor Corp. 1991 T arob Ct., Milpitas, CA 95035, USA, 408-262-661 1, 800-727-4377, F AX: 408-262-9042
Web Site: http://www.sierramonitor.com E-Mail: sales@sierramonitor.com
02/10
© 2010 by Sierra Monitor Corporation
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