Model 4101 Series

Gas Sensor Modules

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 catalytic bead sensor for combustible gas and electrochemical sensor technology for the oxygen and toxic gas sensors, 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.

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 (except Oxygen sensor modules). 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.

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Sierra Monitor Corp. 1991 Tarob Ct., Milpitas, CA 95035, USA, 408-262-6611, 800-727-4377, FAX: 408-262-9042

Web Site: http://www.sierramonitor.com

E-Mail: sierra@sierramonitor.com

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Sierra Monitor Corporation 4101 manual Automatic Low Sensitivity Check, False Alarm Avoidance
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4101 specifications

Sierra Monitor Corporation (SMC), renowned for its innovative solutions, introduced the Model 4101 as part of its advanced line of products aimed at improving industrial automation and safety. The 4101 model is a sophisticated communication device designed to facilitate seamless interaction between various industrial control systems.

One of the standout features of the Sierra Monitor 4101 is its ability to support multiple communication protocols, including Modbus RTU, Modbus TCP/IP, and BACnet, enabling it to interface with a wide array of devices and systems. This versatility allows for easy integration into existing infrastructures, making it highly adaptable for different environments.

The 4101 is equipped with a powerful microprocessor that ensures reliable performance and quick data processing. Its robust hardware is designed to withstand harsh industrial conditions, including extreme temperatures and vibrations, which is critical for field applications. This reliability extends to its power supply options, as the model can operate on standard AC or DC power sources.

Security is a primary concern in today’s industrial landscape, and the Sierra Monitor 4101 addresses this with built-in cybersecurity measures. These include secure firmware updates and encrypted communications, helping to protect sensitive data from unauthorized access and cyber threats.

An additional feature of the 4101 is its user-friendly interface, which simplifies setup and configuration. This allows technicians to carry out installation and maintenance tasks swiftly, minimizing downtime. The device is also equipped with LED indicators for status monitoring, providing real-time feedback on connectivity and operational status.

Another key characteristic of the Sierra Monitor 4101 is its scalability. It is designed to grow alongside your business, making it feasible for both smaller operations and larger industrial complexes. This scalability is complemented by the device's ability to support multiple connections simultaneously, ensuring that it can handle the demands of extensive data transactions.

In summary, the Sierra Monitor Corporation 4101 combines advanced communication capabilities, robust hardware, enhanced security, and user-friendly design, making it an invaluable asset for modern industrial applications. Whether in energy management, building automation, or process control, the 4101 provides the necessary tools to optimize operations and ensure safety in diverse industrial settings.
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