guardsen gs-lda 2 (locating water detection alarm module)
TRANSCRIPT
General Information Design Features
Characteristics
(1) LEDs to indicate power, leak, cable break, and
communication status.
(2) Voltage-free contacts for alarm signaling.
(3) Leak location display on LCD.
(4) Standard twisted pair serial RS-485 communications up to
1200 meters (4000 feet) with Modbus protocol
(5) 12Vdc power supply.
(6) Each GS-LDA-2 unit has a unique address assigned with
software – no switches.
(7) Built-in buzzer (85dB).
(8) DIN rail mounted for easy installation.
The GS-LDA-2 Sensor Interface Module monitors up to 1500 meters of GuardSen sensing cable(GS-LDC-2). When liquid is detected, the GS-LDA-2 unit indicates the leak, displays the location of the leak and switches a relay to provide local voltage-free contact closure.
The GS-LDA-2 can be used as standalone leak detection alarm unit or can also communicate to a host monitoring system such as PLC or other monitoring system by using standard RS-485 protocols.
The low cost of the GS-LDA-2 makes it economical to build very robust systems with many small independent sensing cable segments. No field calibration is required.
General Features
GuardSen Sensing Cable (GS-LDC-2)
1500 m
0.5% of sensor length ± 0.5 m
Cable compatibility
Maximum length of sensing cable
Precision
environmental ratinGs
–18°C to 60°C (0°F to 140°F)Storage temperature Operating temperature Humidity
-20°C to 50°C5% to 90% non-condensing
Power requirements
12Vdc +/- 10%, 2 WOperating Voltage
serial interFace
Network configuration Communication protocol
RS-485 two wire network, 9600 baud, addressable from 1 to 127 Modbus® 485
relay contacts
Type
Rating
Form C (SPDT); Normally close (NC) or Normally open
(NO) DC12V, 2A
86mm 70mm
GuardSen GS-LDA-2 (Locating Water Detection Alarm Module)
Linkwise Technology Pte LtdBlk 3 Ang Mo Kio Industrial Park 2A #06-08, Singapore 568050
Tel: (65) 6484 6368 Email: [email protected]
Leader Cable
Sensing Cable
Important ： The GS-LDA-2 is an electronic unit.Take the following precautions to avoid damage to electronic components:(1) Handle with care and avoid mechanical shock and impact.(2) Keep dry.(3) Avoid exposure to static electricity by touching a nearby piece of grounded equipment prior to handling the GS-LDA-2.(3) Avoid contact with metal filings, grease, adhesive and other contaminants.
Figure 1:DIN rail mountMounting the GS-LDA-2 module:(1) Secure a sufficient length of DIN rail to the desired mounting surface,or locate and existing DIN rail with sufficient space to install the GS-LDA-2.(2) Remove the GS-LDA-2 from its packaging and snap onto the DIN rail with the release Tab towards the bottom.Shown in Figure 1.
End Termination
DC Power Adapter
RS-485Relay Output
GS-LDA-2 Connection
Linkwise Technology Pte LtdBlk 3 Ang Mo Kio Industrial Park 2A #06-08, Singapore 568050
Tel: (65) 6484 6368 Email: [email protected]