SPXCDALMG1 Gas Detector | Honeywell Sensepoint XCD Hydrogen 0-1000ppm

Product Overview

Honeywell SPXCDALMG1 is a Sensepoint XCD fixed industrial gas detector. It uses a hydrogen sensor with a 0-1000 ppm range. This 3-wire, 4-20 mA transmitter protects personnel and plants from gas hazards. Furthermore, it carries multiple global certifications for hazardous area use.

Key Features

• Gas type: Hydrogen (0-1000 ppm)
• Output: 4-20 mA (source or sink)
• Relays: 3 x 5A @ 250 VAC (programmable)
• Communication: RS485 Modbus RTU
• Enclosure: Epoxy painted aluminum alloy (LM25)
• IP66 weatherproof rating
• Temperature range: -40..+75°C
• Certifications: ATEX, IECEx, UL, KTL, GB, CE

Technical Specifications (Hierarchical)

• General
  • Brand: Honeywell
  • Model: SPXCDALMG1
  • Series: Sensepoint XCD
  • Type: Fixed Industrial Gas Detector
  • Sensor: Hydrogen (0-1000 ppm)
  • Enclosure material: Epoxy painted aluminum alloy (LM25)
  • Conduit entry: M20
  • Weight: 1.7 kg (aluminum)
  • Mounting: Pole or wall mounting
• Electrical
  • Input voltage: 16..32 V DC (ATEX/IECEx)
  • Max power: 5 W at 24 V DC
  • Current output: 4-20 mA (source or sink)
  • Fault signal: ≥0.0 to 1.0 mA
  • Normal gas measurement: 4.0..20.0 mA
  • Inhibit signal: 2.0 or 4.0 mA
  • Maximum over range: 22.0 mA
  • Max load resistance: 250 Ω
  • Terminals: 15 x screw terminals (0.5..2.5 mm²)
  • Relays: 3 x 5A @ 250 VAC (NO/NC selectable)
  • Communication: RS485 Modbus RTU
• Certifications
  • ATEX: II 2 GD Ex db IIC T6/T5
  • IECEx: Ex db IIC T6/T5
  • UL: Class I Div 1 & 2, Groups B,C,D
  • KTL: Ex d IIC T6 (-40..+65°C)
  • GB: GB Ex d IIC T4, PA, CCCF
  • CE: EN50270, EN61000-6-4
  • Marine: MED, ABS, CCS, BV
• Environmental
  • IP rating: IP66
  • Operating temp: -40..+75°C
  • Operating humidity: 20-90% RH (continuous)
  • Operating pressure: 80-120 kPa
  • Storage temp: -25..+65°C

Expert Review

“SPXCDALMG1 delivers reliable hydrogen detection for industrial safety applications. The 4-20 mA output integrates easily with existing control systems. Meanwhile, the 3 relays provide flexible alarm signaling. We recommend it for refineries, chemical plants, and battery charging areas.”

Manager’s Insight

“This detector offers excellent value with global certifications. The IP66 rating suits harsh outdoor environments. Furthermore, the Modbus RTU communication enables remote monitoring. With 12-month warranty and fast shipping, it is a dependable choice for gas detection systems.”

Applications & Compatible Devices

• Gas detected: Hydrogen (H₂) from 0 to 1000 ppm
• Industries: Refineries, chemical plants, battery rooms, power generation
• Control systems: PLCs, DCS, SCADA with 4-20 mA inputs
• Communication: Modbus RTU via RS485 for remote monitoring

Installation & Commissioning

• Mounting: Pole or wall mounting (brackets included)
• Wiring: 15 screw terminals (0.5..2.5 mm²)
• Sensor installation: Directly install the hydrogen sensor
• Commissioning: Use the display and keypad for configuration
• Calibration: Perform zero and span calibration with gas

Frequently Asked Questions

• Q: What gas does this detector measure?
  Hydrogen (H₂) in the range of 0 to 1000 ppm.
• Q: What certifications does this model have?
  ATEX, IECEx, UL, KTL, GB, and CE.
• Q: What is the output signal?
  4-20 mA (source or sink) with RS485 Modbus RTU.
• Q: How many relays does it have?
  3 relays, each rated at 5A @ 250V AC.
• Q: What is the operating temperature range?
  -40°C to +75°C.

Experience-based Q&A

• Q: The detector shows a fault. What should I check?
  Check the power supply voltage. Then, review the fault code displayed.
• Q: How often should I calibrate?
  Follow the recommended interval. The detector shows a calibration warning when due.
• Q: Can I use this detector outdoors?
  Yes. IP66 rating protects against dust and water jets.

Selection Guide

• For hydrogen detection, this model is specifically designed.
• For hazardous areas, ATEX and IECEx certifications ensure safety.
• For outdoor use, IP66 and -40°C operation handle harsh conditions.
• For system integration, 4-20 mA and Modbus RTU offer flexibility.
• For marine applications, MED, ABS, CCS, and BV approvals available.

Comparison with Similar Models

• SPXCDALMG1 – Hydrogen, 0-1000ppm, ATEX/IECEx.
• SPXCDALMO1 – Oxygen sensor (0-25% Vol).
• SPXCDALMC1 – Carbon monoxide sensor.

Fault and Warning Reference

• Warnings (W-xx)
  • W-01: Calibration needed
  • W-02: Temperature limits exceeded
  • W-03: Alarm setting needs configuration
  • W-04: Over-range warning
  • W-05: Sensor switched off to prevent deterioration
• Faults (F-xx)
  • F-01: Internal I2C failure – Power cycle the detector
  • F-02: Cell failure – Replace the sensor
  • F-03: Significant zero drift – Re-zero or recalibrate
  • F-04: Unexpected sensor fitted – Replace with correct type
  • F-05: EEPROM corrupted – Reset or replace transmitter
  • F-06: Low supply voltage – Check incoming voltage
  • F-11: DAC output failure – Check load resistor

Package Contents

• SPXCDALMG1 gas detector (1 unit)
• Hydrogen sensor (installed)
• Mounting bracket
• Quick start guide
• Warranty card (12 months)

Shipping & Delivery

• Dispatch: 12–24 hours after order
• Carriers: FedEx, UPS, DHL (express worldwide)
• Tracking: Provided within 24 hours

Contact Information

For inquiries, contact our sales team:

• Email: sales@powergearx.com
• WhatsApp: +86 18030005825

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