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 2526 : Ammonia Gas Sensor (0-100 ppm, 4-20 mA o/p)

The GDA 2526 Ammonia 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 ammonia 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 2528 : Oxygen Gas Sensor (0-25% Vol, 4-20 mA o/p)

The 2528 Oxygen gas sensor is a 2 wire 4-20 mA Loop Powered device with a range of 0-25% vol Oxygen. It has an electrochemical gas sensing unit which is temperature compensated. The gas sensor element is on a pluggable lead allow ease of replacement. The oxygen 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 2626 : Ammonia Gas Sensor (0-100 ppm, 4-20 mA, 0-5 V, 0-10 V o/p)

The GDA 2626 Ammonia gas sensor is a further enhancement of the GDA 2526 Ammonia 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 ammonia 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 3100 : Refrigerant Gas Detector Now Available for HFO's (R514a, R1234yf etc)

This detector detects generally used refrigerant gases (R22, R123, R134a, R404, R407, R410 etc) in the range 0-1000ppm. Each dectector is calibrated to a specific gas type. It has a configurable analog output, 4-20 mA; 0-20 mA; 0-5 V; 0-10 V.There is also a volt free relay which can be user programmed to operate anywhere within the sensor range. The unit is powered from 24 VDC.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.

GDA 4350 : Carbon Dioxide Gas Sensor

The GDA 4350 is a 3 wire 4-20 mA Non Dispersive Infra red (NDIR) Carbon Dioxide sensor. It gives a 4-20 mA o/p over the range of the sensor. It is housed in an IP65 ABS plastic case with an IP60 aperture for the gas path. It uses laser LED to give reliable performance. Calibration for non critical safety applications is every 3 years. There is a low temperature version (suffix LT) which operates from - 25°C to 30°C and a process version (suffix -P) on the ranges 5, 20, 100% vol with a stainless steel 5/8” BSP connection.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.

GDA 7228 : Flush Mount Oxygen Gas Sensor

The 7228 Flush Mount Oxygen gas sensor is a 2 wire 4-20 mA Loop Powered device with a range of 0-25% vol Oxygen. It has an electrochemical gas sensing unit which is temperature compensated. The gas sensor element is on a pluggable lead allow ease of replacement. It is designed to fit into a Clipsal double gang GPO wall mount. The total protrusion from the wall is 13 mm; the sensor head and its electronics are housed in a metal enclosure giving it excellent RFI and EMC compatibility.

DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.

GDA 40127 : Carbon Dioxide Gas Detection Controller (4-20 mA o/p)

The GDA 40127 is an integrated, wall mounted single gas detector control unit for Carbon Dioxide detection with a display. The carbon dioxide detector is a Non Dispersive Infra Red gas detector. 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 additional o/p to drive a 24 VDC sounder / flasher AVR20Y/R which can be muted from the front panel. The alarms are indicated on the display and by flashing LEDS. The unit has a 4-20 mA o/p. There is also a facility for modbus connection which can be added to the gas GDA 40127.

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.

M2001 : Flush Mount Mimic Panel

The M2001 is a low profile flush wall mounted MIMIC panel. These units are used on multi entry rooms so that users may view the gas levels and alarm status of each entry point for entering the room The M2001 is used in conjunction with the GDA 4020 AND GDA 2400 control unit. The M2001 derives its power and RS485 communications from the 4020/ 2400. The unit’s backlit LED display shows the real time concentration of the gas sensors connected to the 4020/ 2400 and any alarms that occur. The M2001 has an inbuilt sounder which can be muted from the front panel. The unit has two alarm relays which activate and deactivate in conjunction with the alarm status of the 4020 and 2400 control panel.

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.