Wireless MultiSet Gas Detection and Control System

CEW Series January 2007

Scalable system using Wireless Sensor-Transmitters communicating with a central Control Panel.

Features Applications

• FCC/IC/ETSI/CE approved RF modules for up to 32 remote sensor-transmitters.• Minimal installation cost - virtually no field wiring required.• Continuous 2 year Battery-powered sensor operation with self diagnostics. Sensors are also available for 24V AC operation.• Relay outputs or zoned 4-20mA outputs from the Control Panel.• “Plug-and-play”. • 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.• Ideal for retrofit of existing buildings to improve safety and conserve energy.• Designed for multiple stage projects. e ACME Wireless MultiSet series is a microprocessor-based multipoint multigas wireless detection and control system that can be used with a wide variety of ACME toxic, combustible, refrigerant & oxygen gas sensors. The sensors can be grouped in any combination. The communication between the Control Panel and the remote sensor-transmitters is accomplished through a 900 MHz or 2.4 GHz wireless network.e versatility of the system allows the user to customize the system parameters (ON-OFF level setpoints, time delays, hysteresis, scan rate, sensor type and range, etc.) via a removable keypad and a 4-line alphanumeric Liquid Crystal Display. e password-protected menu- driven options appear in plain English for easy field-programming. e LCD display provides a continuous digital read-out of gas concentrations for each sensor-transmitter, as well as levels status (L, H & A), the battery voltage and the time elapsed in minutes since the last transmission.In its most basic configuration, the MultiSet Control Panel supports up to 32 channels where each channel is treated independently controlling a fan zone. In this configuration each channel has a set of relay outputs for Low, High and Alarm levels and/or a 4-20 mA signal proportional to the gas concentration. In a more practical application, the channels are divided into groups that collectively serve various fan zones. In the latter configuration each group (zone) has a set of relay output contacts and/or 4-20mA signal proportional to the demand from that group. e MultiSet series Sensor-Transmitters are available with different sensor technologies depending on the type of gas detected. Electrochemical cell type sensors are common for most of the toxic gases, non-dispersive infrared (NDIR) for CO2 & Refrigerant Gases and Combustible Gas sensors are catalytic bead (pellistor) type.e Sensor-Transmitters’ batteries are designed for a 2-year life. e Sensor- Transmitters are also available with 24V AC input instead of batteries.Acme also offers a version of the MutiSet where only a maximum of 4 channels is supported. Output configurations are limited and the user keypad is optional.