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AVR 20 : Alarm Flasher and Sounder

This sounder/flashers operates at 24VDC. The sounder can be permanently disabled so that unit acts as a flasher only. These units are designed for internal use. These are available in Red or Amber.

GDA 2300 : MODBUS Gas Detection Sensor

The GDA 2300 series board is a slave MODBUS interface board that can read from a 2500 series sensor head and/or a 4-20 mA sensor input. The slave device can communicate MODBUS RTU with a baud rate of 9600 or 19200 bps and can have up to 32 devices on a single MODBUS line. The device support the functions ‘Read Holding Register’ (0x03) to read the concentration of the sensors and ‘Write Single Register’ (0x06) to control the 2 output relays from the MODBUS Master. The calibration of the device is easily done with span and zero push buttons that are mounted on the board.

GDA 2525 : Carbon Monoxide Gas Sensor (0-100 ppm, 0-150 ppm, 0-200 ppm, 4-20 mA o/p)

The GDA 2525 carbon monoxide gas sensor is a 2 wire 4-20 mA Loop Powered device. It has an electrochemical carbon monoxide sensor unit which is temperature compensated. The carbon monoxide sensor element is on a pluggable lead to allow ease of replacement. The carbon monoxide gas sensor comes with user selectable ranges 0-100ppm, 0-150ppm and 0-200ppm. The carbon monoxide gas sensor electronics are housed in a robust ABS sun tolerant plastic enclosure rated IP65; the sensor head and its electronics are housed in a metal enclosure giving it excellent RFI and EMC compatibility. The sensor head is fitted with a splash proof cover giving an IP62 rating. 

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.

GDA 2527 : Nitrogen Dioxide Gas Sensor (0-20 ppm, 4-20 mA o/p)

The GDA 2527 Nitrogen Dioxide gas sensor is a 2 wire 4-20 mA Loop Powered device. It has an electrochemical sensing unit which is temperature compensated. The sensor element is on a pluggable lead allow ease of replacement. The nitrogen dioxide gas sensor electronics are housed in a robust ABS sun tolerant plastic enclosure rated IP65; the sensor head and its electronics are housed in a metal enclosure giving it excellent RFI and EMC compatibility. The sensor head is fitted with a splash proof cover giving an IP62 rating.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.

GDA 2625 : Carbon Monoxide Gas Sensor (0-100 ppm, 0-150ppm, 0-200 ppm, 4-20 mA, 0-5 V, 0-10 V o/p)

The GDA 2625 Carbon monoxide gas sensor is a further enhancement of the GDA 2525 Carbon monoxide gas sensor that allows AC and DC operation as well as providing the option of 4-20 mA, 0-10 V, and 0-5 V  operation. The additional voltage o/p can be used on BMS systems that use voltage inputs as opposed to current input. It has an electrochemical gas sensing unit which is temperature compensated. The gas sensor element is on a pluggable lead to allow ease of replacement. The carbon monoxide gas sensor electronics are housed in a robust ABS sun tolerant plastic enclosure rated IP65; the sensor head and its electronics are housed in a metal enclosure giving it excellent RFI and EMC compatibility. The sensor head is fitted with a splash proof cover giving an IP62 rating.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA

GDA 2627 : Nitrogen Dioxide Gas Sensor (0-20 ppm, 4-20 mA, 0-5 V, 0-10 V o/p)

The GDA 2627 Nitrogen Dioxide gas sensor is a further enhancement of the GDA 2527 Nitrogen Dioxide gas sensor that allows AC and DC operation as well as providing the option of 4-20 mA, 0-10 V, and 0-5 V operation. The additional voltage o/p can be used on BMS systems that use voltage inputs as opposed to current input. It has an electrochemical gas sensing unit which is temperature compensated. The gas sensor element is on a pluggable lead to allow ease of replacement. The nitrogen dioxide gas sensor electronics are housed in a robust ABS sun tolerant plastic enclosure rated IP65; the sensor head and its electronics are housed in a metal enclosure giving it excellent RFI and EMC compatibility. The sensor head is fitted with a splash proof cover giving an IP62 rating.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA

GDA 40125 : Toxic/Oxygen Gas Detection Controller (4-20 mA o/p)

The GDA 40125 units are an integrated, wall mounted single gas detector control unit with a display. They interface with the full range of GDA 2500 series Toxic and Oxygen gas sensors. The unit has 2 user relays which can be programmed to operate at any level within the gas detectors operational range. Additional to this there is an independent fail safe fault relay. There is an o/p to drive a 24 VDC sounder / flasher (AVR-20Y/R) which can be muted from the front panel. The alarms are indicated on the display and by flashing LEDS. There is also a facility for modbus connection which can be added to the GDA 401205.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.

GDA 4020 : Two Channel Controller

The GDA 4020 control unit has 2 x 4-20 mA i/p with 3 associated programmable relay alarm levels per sensor. There is an independent fault relay. There are 3 x analog o/p’s which can be configured for either channel as 4-20 mA, 0-20 mA, 0-5 V or 0-10 V. The controller has an isolated RS485 o/p which can be configured to drive modbus or an interface to the M2001 mimic panel. All configurations are carried out via the front panel push buttons. The unit requires 24 VDC.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.

GDA 2400 : Multiplexed 8 Input Controller

The GDA 2400 control unit can take up to 8 x 4-20 mA I/P's. The controller selects the highest reading from the sensors and displays the highest reading of gas from the sensors. This controller is used when ALL the gas sensors are the same type. It is particularly useful in Periphery monitoring and CAR PARK Ventilation control. There are 3 x programmable relay alarm levels. There is an independent fault relay. There are 3 x analog O/P’s which can be configured for either channel as 4-20, 0-20 mA, 0-5 or 0-10 V (with resistor) O/P’s. The controller has an isolated RS485 O/P which can be configured to drive modbus or an interface to the M2001 mimic panel. All configurations are carried out via the push buttons located on the rear of the control board. The unit requires 240 VAC.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.

GDA 620 : Galvanic Isolator 1kV for 4-20 mA lines

This small potted Isolator is used for the protection of 4-20 mA signal lines against high voltage breakthrough and ground loops that give rise to noise problems. It is designed to be mounted inside or adjacent to control equipment. Cable Interface is via plug and socket.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.

 

MS001 : Flush Mount Mute Switch

The MS001 uses one of the alarm SPCO relays from the GDA 4020, GDA 4011, or GDA 2400 to drive the AVR-20R/YM sounder- flasher. The sounder- flasher can be muted by incorporating the MS001 into the o/p switched 24 VDC from the control panel. The sounder will sound when a gas alarm occurs and continue sounding until either the alarm level falls below its threshold value or the MS001 button is pressed. The Mute function automatically resets when the alarm condition terminates.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.