We supply and provide application support for industrial process instrumentation product sensors and control devices. We are a manufacture's representative for a core group of well established and technologically superior industrial process instrumentation products.
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Sierra Monitor Corporation, with over 25 years of experience and more than 15,000 installations worldwide. Sierra Monitor is a leading designer and manufacturer of product solutions that enhance the safety, efficiency and communications capabilities in process control. Hazardous combustible & toxic gas detection systems used in a wide variety of industries, including chemical / petrochemical, wastewater treatment, transportation and oil and gas industries.Gas detection monitoring is an integral part of programs designed to maintain personnel safety and protect the palant and the environment.


2-Wire Toxic Gas Module
IT Sentry Series Detector
IR Series Detector
The Sierra Monitor 2-Wire gas sensor module series provides the latest in loop-powered gas detection loaded with features not normally found in these easy to install sensor modules. The 2-wire series require minimal maintenance continuous self diagnostics, scrolling 16-character display and non-intrusive calibration
IT Series Gas Sensor Modules, the Toxics IT meets the needs of integrators industry-wide to incorporated hazardous gas monitoring information into their plant-wide safety and process system. The IT Toxic Series Gas Sensor Modules utilize proven electrochemical technology to monitor for toxic gases or oxygen deficiency. IT Modules require minimal maintenance. Continuous self-diagnostics will automatically detect and indicate any fault condition.

The Sierra IR Combustibles Gas Detector Module is Best of Class when it comes to providing the features. The IR Gas Sensor Module utilizes Non-Dispersive Infrared technology to monitor for combustible gases (Methane and others). Output range is either 0-100% of LEL or percent (%) by volume. This Module requires minimal maintenance with a calibration check once a year. Internal continuous self-diagnostics will automatically indicate any fault or optics problems.

Catalytic Bead Sensor
Sentry Controller
Sentry IT Controller
The Catalytic Bead Combustible Gas Sensor Module utilizes the proven, reliable, catalytic bead technology to monitor for combustible gases (methane and others). Output range is 0-100% of Lower Explosive Limit (LEL). This detector has minimal maintenance requirements for six month calibration intervals. Internal, continuous self-diagnostics automatically detect and alarm any fault problems. For higher level system capability the module can interface directly to Sierra Monitor’s Sentry Controller system.

The Sentry gas detection system provides a powerful but cost effective solution to gas monitoring demands for a broad range of applications. Sentry is a stand-alone gas monitoring system, but can also be part of a more extensive system with MODBUS interface to DCS systems.

Integrating gas detection, logic controls, graphical interface and remote web server displays, the Sentry IT Controller is "Best of Class". The Sentry controller heritage continues to emphasize Information Technology as a key ingredient of system design. The capability of simultaneous interface via analog 4-20 mA, RS-485 Modbus, Relay contact and SentryBus insures that both new and legacy sensor modules can be deployed. Sentry Commander Logic insures that complex algorithms such as zone voting, delay timing, multiple unique alarm levels and other special requirements.
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Analog Gas Sensors
Optical Flame Detectors
Calibration Kits
The Sierra Monitors analog gas sensor modules provide continuous trouble-free monitoring of hazardous gas conditions to protect your facility. The modules provide an industry standard 4-20 mA output that can interface with single or multichannel controllers and distributed control systems.
The Sierra Monitor optical flame detectors, are top-of-the-line models featuring dual and tri-spectrum designs to provide a full range of capability and provide 120 degree cone of vision. Sierra Monitor provides the Spectrex Optical Flame Detectors, offering a wide range of UV, UV/IR and Triple IR flame detectors with 90 degree cone of vision.

Sierra Monitor offers a variety of gas calibrators to help the users keep their gas sensor modules properly calibrated and accurate. The Calibrator Kit includes a regulator, calibration adapter and carrying case. The individual calibration gas cylinders are sold separately. The 1260 Series gas cylinders are large capacity enabling the user to perform many calibrations with a single cylinder. There are a variety of cylinder sizes available.

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Open Path Gas Detector
Sentry WebServer
Ammonia Gas Monitor
The SafEye 200 series Open Path Gas Detector is a self-contained, fast response optical gas detection system. It detects combustible gases at concentrations lower than the explosion limit (LEL) over a “Line of Sight” of up to 460 feet (140m) long. SafEye is built for reliability and continued operation under all types of extreme environmental conditions.
Sierra Monitor offers a wide range of choices for data output from Sentry Gas monitoring systems. Sentry WebServer captures the imagination of safety managers by combining the power and flexibility of the Sentry Gas Risk Management System with the reliability of a proven gas detection system in combination with the modern technology of the web.
The Model 2050 Ammonia are continuous duty, low cost stationary monitors for detection of high levels (50-500 PPM) of ammonia and halocarbon refrigerant gases. These monitors are primarily used in and around freezers, refrigerators, and compressor rooms to warn of leaks and dangerous levels of these gases.