The GDA 490 is designed to control 1-8 GDA 290 sensors for applications where chiller/refrigerant plant is using PROPANE as the refrigerant gas.
DESIGNED, MANUFACTURED and SUPPORTED by GAS DETECTION AUSTRALIA.
Note: This product has been replaced by the GDA 2400
The control unit derives the 24 VDC required for the sensors from the mains i/p and activates a local 24 VDC o/p on alarm to drive a sounder/flasher AVR-20. The sounder flasher can be muted from the front panel. The alarm also activates a DPCO relay; the contacts may be used to shut down and pump down the system. The alarm is indicated on the front panel by LED’s.
Made in Australia and Supported in Australia
Single Channel Gas Detection Controller
Two Channel Gas Detection Controller
Multiplexed 8 Channel Gas Detection Controller
|Refrigerant Plant Room Monitoring|
Refrigerant gases are used to provide a means of cooling the evaporators in freezers and air conditioning for plant rooms and chiller plants. Historically CFC refrigerant gases such as R11, R12 and R22 have been used. CFC’s are ozone depleting gases and are now being phased out and replaced by ozone friendly gases such as R134a, R407 and R410a.
Why is there a need to detect them?
Gas Detection Australia has a range of ultra-low level refrigerant gas leak detection systems specifically developed to prevent the expensive results of refrigerant gas leaks for R22, R123, R134a, R404, R407, R410a, R514a, R1234yf and many others.
Designed, Manufactured and Supported in Australia.
|Specification Name||Specification Value|
|Power Requirements||240V AC|
|Output Types||2 x SPCO relays + 24v muteable driver|
|Output Specifications||Relays 240V AC Non Inductive|
|Power Consumption||< 1 W with no sensors connected|
|Connection||Plug in connectors on main board|
|Wiring||Low voltage to sensors , 240V AC to control unit|
|Operating Temperature||-10 to 40°C|
|Operating Humidity||5% to 95% RH peak non condensing|
|Warm Up Time||< 10 secs|
|Response Time||< 1 sec|
|Dimensions||153 x 90 x 60 mm|
|Enclosure Material||ABS Plastic|
|Cable Entry||On side of enclosure provided by user|
|GDA490||Control unit GD290 240v ac mains i/p up to 8 GD290 sensors|