-40C to +40C
-40F to +104F
Analygas® Systems Models 20 and 20B are multipoint versions of our highly successful
Model 21 Gas Monitor.
These units protect people, produce and machinery from excessive concentrations of
gases and vapours.
They are particularly suited to operation in unattended locations such as machine
rooms and parking garages.
Analygas® Systems Models 20 and 20B are wall mounted gas monitors for use in non-hazardous
indoor locations and housed in rugged steel enclosures.
The Model 20 has up to 10 independent channels, each of which may be fitted with
1 or 2 remote sensors.
The Model 20B is a scaled down version having 1 or 2 channels.
Channels can be configured to detect different gases and each is designed with 2
alarm levels, allowing flexible control of beacons, horns, fans, etc.
Dry contact relays are included to control ventilation fans or permit activation
of other auxiliary equipment.
To reduce unnecessary fan cycling, these units are equipped with electronic timers,
which delay the action of alarms and relays.
Models 20 & 20B are both ideal for use in parking garages, loading docks, battery
charging areas or any indoor location requiring multipoint gas detection.
MODEL 20 GENERAL DIMENSIONS