Overview

An important decision to make in gas sensor selection for a process environment involves the question of diffusion type versus sample draw system. These diffusion type infrared sensors are highly selective to the target gas, but have no moving parts (i.e., pumps or filters to replace) and will operate virtually maintenance free on a continuous basis for several years. Eliminating pumps, tubing and filters is especially important in refrigerated or washdown areas of food processing and storage facilities.

Because we know that effective and reliable gas detection systems can save lives, Manning Systems is committed to high-quality, durable construction, including robust, well-designed steel sensor and readout enclosures. Manning sensors in Hoffman® steel boxes can be mounted easily and have pre-punched holes to accommodate conduit and flex. The enclosures have adequate room to work inside with high quality connectors that are removable for easy wire insertion. Unlike fragile plastic housings that may break in cold temperatures, Manning Systems enclosures have secured hardware and hinged doors to speed sensor installation in both cold and wet environments.

Unlike a sample draw system where areas are monitored only periodically, all sensors operate continuously in a diffusion design system to ensure total gas detection protection all of the time.

All Manning Systems IR infrared sensors with optional ATMOS equipped^® technology can meet all of their performance specifications down to -50° F and in condensing humidity environments or during washdown.

For the new AirScan™ infrared family of sensors, every two seconds SensorCheck™ technology monitors the AirScan™ source and ensures that the dual channels are functioning properly. A notification signal is transmitted if any of several performance parameters is not met.

All sensors can tie to Manning Systems dedicated central alarm panels with relays to trigger key emergency control functions. Manning's GM-10, GM-4 and GM-1 are "Primary Safety Systems" that allow Emergency Responders to easily assess an emergency situation without human input and provide defined separation of safety and operating systems. The installation of a Manning Primary Safety System (MPSS) central monitoring panel ensures that basic gas safety and alarm functions are available even in the event of computer hardware/software malfunction or operator error.

The new AirAlert™ 96d multi-channel gas monitoring system adds addressable RS-485 Modbus communication protocol to the broad line of Manning Systems readout/alarm units. A total of 96 gas sensors and relay modules can be linked to a single controller.

AirScan™ iCO₂ Infrared Carbon Dioxide Sensor

Coming in the fall of 2006, the AirScan™ iCO₂ provides a linear 4/20 mA output of carbon dioxide concentration. Ranges: 0-.5% (5,000 ppm), 0-1% (10,000 ppm) and 0-5% (50,000 ppm). Excellent for indoor air quality monitoring, breweries, process controls, mushroom farms, wineries, food processing plants.

AirScan™ iR Infrared Refrigerant Gas Sensor

The AirScan™ iR is for refrigerants (including R-22, R-134a, R-507, R-404a, etc.) Range: 0-3,000 ppm (optional 0-500 ppm).

IR-NH₃ Infrared Ammonia Sensor

The IR-NH₃ is an ammonia sensor for monitoring high concentrations, up to 2% (20,000 ppm). It is very selective to ammonia and is excellent for reliable equipment shutdown when ammonia reaches dangerous levels.