2
00258
System description
AGDS-MCM
v2
The AGDS-MCM is a gas detection system designed to monitor the atmosphere for target gases.
The system comprises of a mains powered panel capable of operating up to six combustible and two carbon monoxide
detectors (or 16 total in conjunction with the AD-PP transformer pack),. Combustible, Carbon Monoxide, Carbon Dioxide &
Oxygen are available.
The detectors are pre-calibrated by Medem (UK) Ltd such that they only require to be connected to the panel and functionally
tested during commissioning by a Medem engineer.
In the event of a high alarm from one of the detectors the system will isolate activate an internal toner, change the display
message and if enabled activate a BMS relay.
Control Panel
Low Voltage Gas Detectors
Combustible detectors are set to alarm at 5% LEL (pre alarm) and 10% LEL for the high alarm.
Carbon Monoxide detectors are set to alarm at 20ppm (pre alarm) and 30ppm for high alarm.
Carbon Dioxide detectors have settable high alarms of 1500, 2200, 4000, & 5000 PPM’s
Oxygen depletion detectors are set to alarm at 19.5% (pre alarm and 18% (high alarm)
Connect a detector to the “detectors terminals” (
11
&
12
), each detector has a rotary address selector switch (0-F) set to a unique
address. Once connected and addressed you are required to press the “learn Field Devices” button (
21
).
Each gas sensor unit has an LED which shows green when power is applied.
Note: There is a warm up period after initial power up of approximately 90 seconds. During this time the green LED will flash once
per second and the output signal will be inhibited. This is to prevent spurious alarms. After the warm up period and on application
of gas, the red LED will light when a high gas alarm level is reached.
OLED Screen for clear
instructions
