Analygas® Systems Model 21 is an economical and durable gas monitor.
It has stood the test of time, having been upgraded and improved during a continuous production span of over 30 years, yet it is still
as popular as ever with end users.
​
The Model 21 protects people, produce and machinery from excessive concentrations
of gases and vapours.
It is particularly suited to operation in unattended locations such as machine
rooms and parking garages.
KEY FEATURES
Reliable Broad Band Sensors
Visual and Audible Alarms
Optional Digital Display (Front Panel or Remote Mounted)
​
Output Relays
Simple Calibration
Easy To Install
Analygas® Systems Model 21 is a wall mounted
gas monitor for use in non-hazardous indoor locations. It has 2 alarm levels and is supplied
with 1 or 2 sensors. Either or both sensors can be configured to activate the alarms. Sensors may be mounted on the unit or in a remote area.
​
Dry contact relays are included to control
ventilation fans or permit activation of other
auxiliary equipment.
​
A 4-20mA output is standard for the purpose of
data logging, PLC or computer processing.
SPECIFICATIONS
Solid state sensors
Optional Digital Display
1 or 2 Sensing Points
​
120V or 240V Input, 10VA
​
4-20mA or 0-1V Output
2 Output Relays
​
Operating temperature
-40°C to 40°
-40°F to 104°F
A digital display indicating gas concentration
is available for mounting on the front panel or
at a remote site.
​
To reduce unnecessary fan cycling, the Model 21 is equipped with electronic timers, which delay the action of the alarms and relays.
This helps prevent excessive wear on external control systems.
​
This favourite of many years is ideal for use in machine rooms, parking garages, loading docks, battery charging areas, furnace rooms, etc.
Carbon Monoxide
Halocarbons
Propane
Methane
Ammonia
Hydrogen
(consult factory)
GENERAL DIMENSIONS
21
Analygas® Systems Model 21 is an economical and durable gas monitor.
It has stood the test of time, having been upgraded and improved during a continuous production span of over 30 years, yet it is still
as popular as ever with end users.
​
The Model 21 protects people, produce and machinery from excessive concentrations
of gases and vapours.
It is particularly suited to operation in unattended locations such as machine
rooms and parking garages.
KEY FEATURES
Reliable Broad Band Sensors
Visual and Audible Alarms
Optional Digital Display (Front Panel or Remote Mounted)
​
Output Relays
Simple Calibration
Easy To Install
Analygas® Systems Model 21 is a wall mounted
gas monitor for use in non-hazardous indoor locations. It has 2 alarm levels and is supplied
with 1 or 2 sensors. Either or both sensors can be configured to activate the alarms. Sensors may be mounted on the unit or in a remote area.
​
Dry contact relays are included to control
ventilation fans or permit activation of other
auxiliary equipment.
​
A 4-20mA output is standard for the purpose of
data logging, PLC or computer processing.
SPECIFICATIONS
Solid state sensors
Optional Digital Display
1 or 2 Sensing Points
​
120V or 240V Input, 10VA
​
4-20mA or 0-1V Output
2 Output Relays
​
Operating temperature
-40°C to 40°
-40°F to 104°F
A digital display indicating gas concentration
is available for mounting on the front panel or
at a remote site.
​
To reduce unnecessary fan cycling, the Model 21 is equipped with electronic timers, which delay the action of the alarms and relays.
This helps prevent excessive wear on external control systems.
​
This favourite of many years is ideal for use in machine rooms, parking garages, loading docks, battery charging areas, furnace rooms, etc.
Carbon Monoxide
Halocarbons
Propane
Methane
Ammonia
Hydrogen
(consult factory)
GENERAL DIMENSIONS
21
Analygas® Systems Model 30 is a PC based gas monitor. This versatile product can be supplied in a turnkey package
or as separate components to integrate with existing control systems.
Features include digital signal processing and advanced sensor technology.
Sensors can be individually connected or optionally 'daisy-chained'.
KEY FEATURES
Reliable Broad Band Sensors
Visual and Audible Alarms
Optional Digital Display (Front Panel or Remote Mounted)
​
Output Relays
Simple Calibration
Easy To Install
Analygas® Systems Model 21 is a wall mounted
gas monitor for use in non-hazardous indoor locations. It has 2 alarm levels and is supplied
with 1 or 2 sensors. Either or both sensors can be configured to activate the alarms. Sensors may be mounted on the unit or in a remote area.
​
Dry contact relays are included to control
ventilation fans or permit activation of other
auxiliary equipment.
​
A 4-20mA output is standard for the purpose of
data logging, PLC or computer processing.
SPECIFICATIONS
Solid state sensors
Optional Digital Display
1 or 2 Sensing Points
​
120V or 240V Input, 10VA
​
4-20mA or 0-1V Output
2 Output Relays
​
Operating temperature
-40°C to 40°
-40°F to 104°F
A digital display indicating gas concentration
is available for mounting on the front panel or
at a remote site.
​
To reduce unnecessary fan cycling, the Model 21 is equipped with electronic timers, which delay the action of the alarms and relays.
This helps prevent excessive wear on external control systems.
​
This favourite of many years is ideal for use in machine rooms, parking garages, loading docks, battery charging areas, furnace rooms, etc.
Carbon Monoxide
Halocarbons
Propane
Methane
Ammonia
Hydrogen
(consult factory)
GENERAL DIMENSIONS
21
Analygas® Systems Model 30 is a PC based gas monitor. This versatile product can be supplied in a turnkey package
or as separate components to integrate with existing control systems.
Features include digital signal processing and advanced sensor technology.
Sensors can be individually connected or optionally 'daisy-chained'.
KEY FEATURES
Up to 128 Sensors
Complete Data Logging Package included in Software
Digital and Bar Graph Displays are standard
Print on demand or user configurable
Easy To Install
​
Maximum, Minimum and Time Weighted Average displayed
Analygas® Systems Model 30 is designed to monitor a
wide range of gases from remote, indoor, non-hazardous
locations, at distances up to 1,200 metres (4,000 feet).
Remote monitors transmit digital information to an
interface module and from there, to a computer, via a
serial port.
Data can be processed by a computer supplied by
Analygas Systems, an existing computer using Analygas
Systems software, or a network package, offering
maximum user flexibility.
Relays are provided in the interface module to control
external warning devices such as audible alarms,
flashing beacons, etc.
In the event of a sensor failure, a message will appear
on the relevant channel readout.
SPECIFICATIONS
Solid state sensors
Optional Digital Display
1 or 2 Sensing Points
​
120V or 240V Input, 10VA
​
4-20mA or 0-1V Output
2 Output Relays
​
Operating temperature
-40°C to 40°
-40°F to 104°F
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A digital display indicating gas concentration
is available for mounting on the front panel or
at a remote site.
​
To reduce unnecessary fan cycling, the Model 21 is equipped with electronic timers, which delay the action of the alarms and relays.
This helps prevent excessive wear on external control systems.
​
This favourite of many years is ideal for use in machine rooms, parking garages, loading docks, battery charging areas, furnace rooms, etc.
Carbon Monoxide
Halocarbons
Propane
Methane
Ammonia
Hydrogen
(consult factory)
GENERAL DIMENSIONS
21
Analygas® Systems Model 21 is an economical and durable gas monitor.
It has stood the test of time, having been upgraded and improved during a continuous production span of over 30 years, yet it is still
as popular as ever with end users.
​
The Model 21 protects people, produce and machinery from excessive concentrations
of gases and vapours.
It is particularly suited to operation in unattended locations such as machine
rooms and parking garages.
KEY FEATURES
Reliable Broad Band Sensors
Visual and Audible Alarms
Optional Digital Display (Front Panel or Remote Mounted)
​
Output Relays
Simple Calibration
Easy To Install
Analygas® Systems Model 21 is a wall mounted
gas monitor for use in non-hazardous indoor locations. It has 2 alarm levels and is supplied
with 1 or 2 sensors. Either or both sensors can be configured to activate the alarms. Sensors may be mounted on the unit or in a remote area.
​
Dry contact relays are included to control
ventilation fans or permit activation of other
auxiliary equipment.
​
A 4-20mA output is standard for the purpose of
data logging, PLC or computer processing.
SPECIFICATIONS
Solid state sensors
Optional Digital Display
1 or 2 Sensing Points
​
120V or 240V Input, 10VA
​
4-20mA or 0-1V Output
2 Output Relays
​
Operating temperature
-40°C to 40°
-40°F to 104°F
A digital display indicating gas concentration
is available for mounting on the front panel or
at a remote site.
​
To reduce unnecessary fan cycling, the Model 21 is equipped with electronic timers, which delay the action of the alarms and relays.
This helps prevent excessive wear on external control systems.
​
This favourite of many years is ideal for use in machine rooms, parking garages, loading docks, battery charging areas, furnace rooms, etc.
Carbon Monoxide
Halocarbons
Propane
Methane
Ammonia
Hydrogen
(consult factory)
GENERAL DIMENSIONS
21