ACME TwinSet - Model TW-ECH Series - Stand-Alone Dual Gas Monitor
From Gas Detection - Stand Alone Gas Detectors
The Acme TwinSet and its microprocessor-based system feature a high-quality stand-alone controller providing all the necessary hardware for the continuous monitoring of two gases in the following combinations: CO/CO, CO/CO2, CO/ NO2, CO/COMB. This unit is primarily geared towards providing alarm-activated relays for simple applications such as small parking garages.
Products Details
The TwinSet 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. The main body of the TwinSet Gas Monitor detects carbon monoxide build-up, while the remote sensor monitors either CO, NO2, or a combustible.
Installed within the monitored space, the TwinSet 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 TwinSet 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.
For more information about this product please click the Product Literature, Specifications and or Application Request Form links provided on this page.
Features
- 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, 0-5
- V DC or 0-10V DC analog output
- Optional remote sensor
Applications
- Versatile and cost-effective way of detecting two gases simultaneously by a single Controller
- 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
Standard Unit Specifications
- Gases Detected: CO, CO2 , NO2 , H2 , CH4 (Methane), C3 H8 (Propane)
Sensor Technology:
- Toxic: 3-Electrode Electrochemical Cell
- Flammable: Catalytic Pellistor
- Sensing Method: Diffusion
- Power Requirements: 24V or 120V or 240V 50/60Hz
- Optional:
- 4-20 mA, or one of the following
- 0-1V DC
- 0-5V DC
- 0-10V DC
- Operating Temperature: -4ºF to 120ºF (-20ºC to +50ºC)*
- Humidity Range: 15-90% RH
- Accuracy: +3% /- 5% of Calibrated value (electrochemical sensors) +/- 1 L.E.L (pellistor)
- Repeatability: 2% of Signal
- Response Time (T90%): 40 seconds
- Expected Sensor Lifetime:
- Electrochemical
- 2 years for other gases
- Pellistor
- 3 years
- Main Enclosure:
- NEMA 3
- Polystyrene
- Grey
- Surface Mounting
- Main Enclosure Dim.: 6” x 6”x 4” (152mm x 152mm x 102mm)
- Approvals: CAN/CSA C22.2 No. 61010-1:2004 ANSI/UL 61010-1:2004
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