TTK FG-A-OD Non-Locating Unit


  • Leak Detection of Hydrocarbons
  • Three LED Indicators
  • Two SPDT Relays

TTK FG-A-OD, Alarm Unit for Hydrocarbon Leak Detection, is designed to be used with FG-OD hydrocarbon range of products, to provide quick detection of liquid (non-conductive hydrocarbon liquids and solvent). LEDs on the front panel indicate presence of Power Supply (green), Leak Detected (red) or Cable Break (yellow). Responses on the FG-A-OD alarm unit:

  • In the case of leak, an audible alarm is triggered. The red LED is switched on and the leak relay is activated.
  • In the case of cable break, an audible alarm is triggered, the yellow LED is switched on and the cable break relay is activated.

The “SOUND OFF” button on the front panel allows manual silencing of the audible alarm. The LED and corresponding relay remain activated as long as the fault persists. When the fault is corrected the LED and the relay return to normal status.



Compatibility Hydrocarbon range of sense cables: FG-OD, FG-ODR, FG-ODC;
Point detector: FG-ODP
Box Type IP50; ABS flame retardant UL94V0
Operating Temperature 0°C to 50°C
Relay Type for Faults Two SPDT Relays – One of Leak, One for Cable Break/Power Fail
Maximum Switching Voltage 125V AC and 220V DC
Maximum Switching Capacity 60W (30 x 2A)
Supply Voltage 12-24 VAC, or 100-240 VAC; 15-30 VDC
Dimensions (W,H,D) 172x85x55 mm

Electrical Ratings

Power Supply 100-240VAC  N : Neutral / P : Phase / : Earth
Power Supply 12-24 VAC; 15-30VDC Automatic polarity for DC
Power Fail/Continuity Fault R1 : COM / R2 : NO / R3 : NF
Leak Relay R4 : COM / R5 : NO / R6 : NF
FG-CLOD Leader Cable B : White / C : Black / D : Red

Identification Codes

FG-A-OD Alarm Unit for Hydrocarbon Leak Detection (wall mounted)
FG-OD20, FG-OD12, FG-OD7, FG-OD3 Addressable Oil Sensing Cable in 20, 12, 7, 3 m with Connectors
FG-ODR20, FG-ODR12, FG-ODR7, FG-ODR3 Addressable Refined Liquid Oil Sensing Cable in 20, 12, 7, 3 m with Connectors
FG-ODC12, FG-ODC7, FG-ODC3 Addressable High Sensitivity Oil Sense Cable in 12, 7, 3 m with Connectors
FG-CLOD Leader Cable, on ‘OD Bus 8771’
FG-TMOD Digital End Plug on ‘OD Bus 8771’ for FG-OD Cable
FG-NOD N ‘OD Bus 8771’ Neutral Cable ‘N’ (30, 15, 7, 3, 1m) With Connectors
CF-OD50 50 Hold-down Clips with Adhesive for Oil Cables
ES-OD 40 Tags for Oil Cable


TTK FG-A-OD Non-Locating Unit_DpstarGroup