The DHA-1L, 2L line type heat detectors is pneumatic detectors when the ambient temperature increases in the event of fire, the volume of heated air also expands. Air-filled sensing tubes transmit this pressure increase to a sensor in the tube terminal processor. The system triggers an alarm as soon as a defined limit is exceeded. DHA-1L type is highest sensitivity.

SPECIFICATIONS

Type: Rate of Rise Line Type
Model: DHA-1L, 2L
Detector Operation: Pneumatic Tub Type, Pneumatic Expansion Type
Alarm Current: 100mA @24Vdc
Operating Voltage: 8.5Vdc – 30Vdc
Operating Temp. Range: -10°C – 50°C
Pneumatic Tube length: 20m – 100m, The Outside Diameter: 2mm, The Inside Diameter 1.4mm
Material Body .Cover: Modified Polycarbonate
Color: White Ivory
Weight: Approx. 400g
Country of Origin: Japan
Approval: JFEII
Accessory: AK-M Pneumatic Tube (With Messenger Wire)