Gas Detection XCL
VESDA Sensepoint XCL XCL-LB-NH3-RM Ammonia Modbus Detector
- Output type
- Modbus RTU, Relay
- Gas type
- Ammonia (NH3, ppm)
- Relays
- 2 x programmable relays (both 4-20 mA and Modbus RTU versions equipped)
- Operating voltage
- 24 VDC nominal, 9 to 32V DC (Modbus); 24V AC 50/60 Hz nominal (20 to 27 VAC), 20 to 27V AC (all versions)
- Max inrush current
- Maximum inrush current: 850 mA
- Ingress protection
- IP65, Type 4 and (NEMA 250)
- Operating temperature
- -20 to +50 °C
Overview
What it is and how it fits the system.
The XCL-LB-NH3-RM is the Modbus RTU version of the VESDA Sensepoint XCL Large Bore ammonia (NH3) gas detector, fitted with two programmable relays. Designed for multi-hole cumulative ASD pipe-network sampling, it runs on 24V DC/AC, operates from -20 to +50°C and carries an IP65 (Type 4 / NEMA 250) rating in a 113 x 113 x 59 mm housing.
Technical overview
XCL-LB-NH3-RM carries the Modbus RTU output stage of the Xtralis VESDA Sensepoint XCL Large Bore ammonia (NH3, ppm) gas detector, an ASD pipe-network unit that draws its air sample from continuous pipe flow. Two programmable relays accompany the digital interface, and the Modbus RTU connection integrates readings into BMS, fire alarm panels, PLC and HVAC systems.
Approvals are listed as EN/UL/IEC 61010-1; CSA-C22.2 Nr. 61010-1-12; CE - EMC; EN 50270; RED, FCC, BT SIG. For routine work, the gas sensor cartridge is field-replaceable — XCL-SC-NH3 is the ammonia replacement — and an integral gas connection supports function testing and calibration, while the Sensepoint App works over Bluetooth to speed up commissioning, maintenance and service.
Catalogued accessories cover the XCL-LB-ELB 60-degree bend in a four-pack and the XCL-LB-FLT-1 filter cartridge for NH3 and CO2 duty in a ten-pack, with terminal-by-terminal wiring set out in the installation manual.
Specifications
Full technical data for this part.
| Output type | Modbus RTU, Relay |
|---|---|
| Gas type | Ammonia (NH3, ppm) |
| Relays | 2 x programmable relays (both 4-20 mA and Modbus RTU versions equipped) |
| Operating voltage | 24 VDC nominal, 9 to 32V DC (Modbus); 24V AC 50/60 Hz nominal (20 to 27 VAC), 20 to 27V AC (all versions) |
| Max inrush current | Maximum inrush current: 850 mA |
| Dimensions | 113 x 113 x 59 mm (W x H x D) |
| Weight | 500 g |
| Ingress protection | IP65, Type 4 and (NEMA 250) |
| Operating temperature | -20 to +50 °C |
| Storage temperature | 0 to +30 °C |
| Humidity | 0 to 99 %, (non-condensing) |
| Air pressure | 90 to 110 kPa |
| Enclosure material | Polycarbonate |
| Pipe size compatibility | Connection to ASD pipe networks 25 mm, 27 mm OD |
Specifications sourced from manufacturer documentation.
Specifications per manufacturer documentation, subject to change — E&OE. Spotted an inaccuracy? Let us know
Spares & replacement parts
Replacement parts for units already in service.
XCL/XRL Replacement Sensor-Ammonia (NH3)
Replacement gas sensor for the ammonia variant