TTK FG-ALS4 Locating Units


  • Locating Leak Detection System
  • 4 Independent Zones
  • 4 Simultaneous Leaks can be Detected
  •  Touch Screen Display
  •  MODBUS/JBUS Integration

TTK FG-ALS4 is an innovative and cost effective solution for water leak detection and acid leak detection. It is accurate and easy to install and to use, ideal for small and medium applications where accurate leak location is required. Four detection zones are available on this small unit, it can control up to 45 metres of water or acid sense cable per zone. A touch-screen gives clear indications of the system status. 5 relays are integrated and RS485 serial link with MODBUS /JBUS communication protocol for interfacing with BMS is available.


Compatibility Analog sense cables: FG-ECS, FG-ECX, FG-ACS, FG-ACX
Enclosure Type ABS flame retardant UL94V0
Operating Temperature  -5°C to 55°C
Serial Interface Physical Support Optoisolated two wire RS485
Serial Link Parameters 9600 baud, 8 data bits, 1 stop, no parity
Supported Protocol MODBUS, function 3
Relays Type: Leak + Cable Break 5 SPDT single contact NO-NC
Relay Max. Switching Voltage 125VAC and 220VDC
Relay Max. Switching Capacity 60W (30V x 2A)
Supply Current (typ.) 0.25A/115VAC 0.15A/230VAC
Supply Voltage 100-240 VAC, 50/60Hz
Dimensions (W,H,D)  Wall mounted: 168 x 153 x 56 mm;
Rack mounted: 482.60 x 132.56 mm
Ingress Protection (IP) IP40

Electrical Specification

Power Supply N : Neutral / L : Line / : Earth
RS485 R1 : COM / R2 : RT+ / R3 : RT-
Cable Break Relay R1 : NO / R2 : COM / R3 : NC
Leak Relay  R1 : NO / R2 : COM / R3 : NC
FG-CLC Leader Cable A : Green wire / B : White wire / C : Black wire / D : Red wire

Identification Codes

FG-ALS4 F Four zones alarm & location system unit – wall mounted
FG-ALS4 E Four zones alarm & location system unit – rack mounted (19’’, 3U)
FG-ECS, FG-ACS and FG-ECX, FG-ACX Water or acids sense cable in 3m, 7m, and 15m in length
FG-CLC Leader cable of 3.5 metres length
FG-TMX End termination plug
CF-EC100 100 hold-down clips with glue
ES-EC 40 tags


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