ACME QuadSet - Model CEL4 Series -4 Channels Multigas Detection and Control System

The LCD display provides a continuous digital read-out of gas concentrations for each sensor/transmitter, as well as levels status (Low, High, and Alarm).

In its most basic configuration, the CEL-4 Control Panel supports up to 4 channels where each channel is treated independently controlling a fan zone. In this configuration, all channels have their own SPDT relay output at Low gas levels and/or 4-20mA signals proportional to the gas readings. In a more practical application, the channels are divided into groups that collectively serve various fan zones. In this latter configuration, each group (zone) has a set of relay output contacts at Low gas levels and/or 4-20mA signal proportional to the demand from that group. High & Alarm gas level SPDT relay outputs are always common to all channels.

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

• Proven RS-485 transmission technology for up to 4 remote sensor/transmitters.
• Relay outputs or 4-20mA analog outputs from the Control Panel.
• Equipment is composed of solid-state circuitry housed in rugged enclosures.

• Energy savings through the intermittent operation of ventilation equipment in enclosed facilities.
• Suitable for garages, tunnels, warehouses and other enclosed commercial locations where a hazardous build-up of gases may occur.

• Gas detected:
• Toxics: Carbon Monoxide, Carbon Dioxide, Nitrogen Dioxide, Hydrogen, Hydrogen Sulphide, Sulphur Dioxide, Oxygen, etc.
• Combustibles: Propane, Methane, Butane
• Detection range: Varies by gas
• Sensors: ECH, NDIR, Catalytic Bead or Electrochemical
• Mounting: Wall or column with brackets (supplied)
• Unit dimensions: 152mmH x 152mmW x 101mmD (6”H x 6”W x 4”D)
• Supply voltage: 24V (9V for Combustibles) supplied from Control Panel
• Outputs : RS-485
• LED indicators: Power "On", Bar graph for CO-ST-485
• Operating Temperature: Varies by gas
• Realtive Humidity: 5-95% non-condensing
• Approvals:
• CAN/CSA-22.2 No 1010.1-92
• UL 61010C-1
• ISA S82.01
• Sensor Life: 7 Years for CO only; 2 Years for Electrochemical; 10 Years for NDIR; 3 Years for Catalytic Bead Sensors

Principle of operation:

• The ST Series Sensor/Transmitters provide a linear, 4-20 mA output signal over the desired detection range for the gas selected. This signal is digitally transmitted to the CEL4 Control Panel using an addressable RS-485 communication interface.

Typical specifications:

• Supply, install and connect at locations shown on plans ACME model XX(-EL)-ST-485 Sensor/Transmitters and a CEL4 Control Panel.
• Each Sensor/Transmitter shall be interrogated by the Control Panel and its data acquired and stored in memory.
• The CEL4 Control Panel shall have multiple ON-OFF outputs at LOW LEVEL detection, common outputs for HIGH and ALARM LEVEL and visual status indicators for each sensor. Discrete relay contacts shall be available to operate the mechanical ventilation equipment based on demand. Local and/or remote alarm devices shall also be activated by the ON-OFF relays.
• The CEL4 Control Panel’s logic circuits shall operate the exhaust/supply fans and dampers according to job specifications. The Control Panel shall supply 24VAC to all remote Sensor/ Transmitters.
• The standard panel provided shall be a gasketed NEMA 1 enclosure with provision for a 120VAC 50/60 Hz power input. Power shall be supplied from a dedicated uninterruptible 15A circuit. (Provision for battery back-up is optional).