ACME UniSet - Model UN-ECH Series -Stand-Alone Gas Monitor

The UniSet employs the best sensing technologies available: Electrochem and pellistor (catalytic combustion) cells. These quality components provide virtually instantaneous detection of targeted gasses and deliver long-term trouble-free operation.

Installed within the monitored space, the Uniset monitors targeted gas concentration rates and automatically operates the mechanical ventilation system of a facility. Upon detection of low levels of hazardous and flammable gases, the ventilation system is energized thereby protecting occupants, personnel, and gas-sensitive goods and products.

The Uniset contains all the well-known standard features of ACME’s gas detection line; a robust enclosure, the latest sensing technologies, and state-of-the-art electronics.

Features Include a High-accuracy Electrochemical Cell sensor for toxic gases and Catalytic (Pellistor) for flammables, 3 or 4-stage SPDT relay outputs with LED status indicators, NEMA 3 Robust Enclosure, Microprocessor-based control, 10-Step Bar-Graph Display of gas levels, Programmable time delays to avoid nuisance alarms, Optional 4-20mA, 0-1V DC, 0-5V, DC or 0-10V DC analog output, Optional remote sensor.

For more information about this product please click the Product Literature, Specifications, and or Application Request Form links provided on this page

• High-accuracy Electrochemical Cell sensor for toxic gases and Catalytic (Pellistor) for flammables
• 3 or 4-stage SPDT relay outputs with LED status indicators
• NEMA 3 Robust Enclosure
• Microprocessor-based control.
• 10-Step Bar-Graph Display of gas levels
• Programmable time delays to avoid nuisance alarms
• Optional 4-20mA, 0-1V DC, 0-5V DC or 0-10V DC analog output
• Optional remote sensor

• Energy savings through the intermittent operation of ventilation equipment in enclosed areas
• Commercial or industrial locations where a sudden build-up of toxic and/or flammable gases may occur
• Car Parking and Bus Maintenance Garages, Tunnels, Warehouses, Factories Food Processing and Bottling Plants, Wastewater Treatment Plants, Steel Mills, Cryogenic laboratories and Incineration Rooms
• Stand-alone with relay outputs or analog outputs for direct connection to the existing Building Management System (BMS) or DDCS

• Gases Detected: CO, NO, O, H, CH4 (Methane), C3H8 (Propane), NH3,H2S, Cl2
• Sensor Technology
• Toxic: 3-Electrode Electrochemical Cell
• Flammable: Catalytic Pellistor
• Sensing Method: Diffusion
• Power Requirements: 24V or 120V or 240V 50/60HZ
• Outputs: 3 or 4-stage Relay; Contact rating 3
• Optional: 4-20mA, or one of the following, 0-1VDC, 0-5V DC, 0-10VDC
• Operating Temperature: -4°F to 120°F (-20°C to +50°C)
• Humidity Range: 15-90%RH
• Accuracy: +/- 5% of Calibrated value (electrochemical sensors) +/- 1 LEL CH4 (pellistor)
• Repeatability: 2% of Signal
• Response Time (T$H>%): 40 seconds
• Expected Sensor Lifetime: Electrochcmical: 5 years for CO only, 2 years for other gases Pellistor: 3 years
• Enclosure: NEMA3, Polystyrene, Grey, Surface Mounting
• Dimensions: 5.2"x5.2"x3", (130mm x 130mm x 75mm)
• Approvals: CAN/CSA C22.2 No. 61010-1:2004, ANSI/UL 61010-1:2004