SPXCDALMHX Honeywell Sensepoint XCD Fixed H2S Transmitter
Manufacturer: Honeywell
Product No.: SPXCDALMHX
Condition： In stock
Product Type: Transmitter Monitor
Product Origin: USA
Payment: T/T, Western Union
Weight: 4900g
Shipping port: Xiamen
Warranty: 12 months
Estimate delivery times: 12-26 days (International), 3-6 days (United States).
Return within 30 days of purchase. Duties & taxes are non-refundable.
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Product Overview
Honeywell SPXCDALMHX is a fixed industrial gas detector from the Sensepoint XCD series. It detects hydrogen sulfide (H₂S) in industrial environments. The unit combines a gas sensor, transmitter, local display, and configurable alarm outputs.
This model uses an electrochemical H₂S sensor. Its standard measurement range is 0–50 ppm. Users can select a full-scale range from 10 to 100 ppm. The detector supports continuous gas monitoring in potentially hazardous areas.
The LM25 aluminum enclosure provides mechanical protection for industrial installation. Its M20 cable entry supports compatible electrical connections. The integrated LCD displays gas readings and operating status. Magnetic switches allow configuration without opening the enclosure.
Technical Specifications
| Brand | Honeywell |
| Model | SPXCDALMHX |
| Series | Sensepoint XCD |
| Product Type | Fixed Industrial Gas Detector and Transmitter Kit |
| Target Gas | Hydrogen Sulfide (H₂S) |
| Sensor Technology | Electrochemical (EC) |
| Standard Measurement Range | 0–50 ppm |
| Selectable Full-Scale Range | 10–100 ppm |
| Range Adjustment Step | 1 ppm |
| Default Calibration Point | 25 ppm |
| Response Time (T90) | Less than 50 seconds |
| Measurement Accuracy | ±1 ppm under specified test conditions |
| Power Supply | 16–32 VDC, 24 VDC nominal |
| Maximum Power Consumption | 3.7 W for electrochemical sensor versions |
| Analog Output | 4–20 mA, selectable sink or source |
| Digital Communication | RS485 Modbus RTU, optional |
| Alarm Relays | 2 programmable alarm relays |
| Fault Relay | 1 programmable fault relay |
| Relay Rating | 5 A at 250 VAC |
| Display | Tri-color backlit LCD |
| Configuration Method | Non-intrusive magnetic switches |
| Enclosure Material | LM25 aluminum alloy |
| Cable Entry | M20 |
| Ingress Protection | IP66 |
| Sensor Operating Temperature | -20°C to +55°C |
| Extended Temperature Rating | Confirm the applicable certification and sensor limitations before installation |
| Operating Humidity | 20–90% RH continuous, non-condensing |
| Dimensions (L × W × H) | 99 × 164 × 225 mm |
Measurement Performance and Environmental Resistance
The electrochemical sensor measures H₂S concentration in parts per million. Its default full-scale range is 50 ppm. The user can select other supported full-scale settings.
- Resolution: The selectable range adjustment step is 1 ppm. This value is not a separately specified display resolution.
- Response: The specified T90 response time is less than 50 seconds.
- Accuracy: Typical specification is ±1 ppm under defined calibration conditions.
- Linearity: Consult the applicable sensor performance documentation for a separate linearity specification.
- Frequency Response: Not specified as a frequency-based measurement parameter. T90 defines the gas response time.
- Temperature: The H₂S electrochemical sensor operates from -20°C to +55°C.
- Humidity: Supports 20–90% RH continuous operation without condensation.
- Enclosure Protection: IP66 protects the enclosure against dust and powerful water jets.
- Electrical Noise: Follow the manufacturer's grounding, shielding, and cable installation instructions.
Installation Guidelines
- Mounting Location: Select a position that represents the potential H₂S exposure area.
- Mounting Orientation: Follow the manufacturer's sensor orientation and installation requirements.
- Mechanical Installation: Use the integrated mounting plate for direct surface installation.
- Pipe Installation: Use the optional bracket for compatible horizontal or vertical pipe mounting.
- Cable Entry: Use compatible M20 glands and suitable mechanically protected cables.
- Electrical Supply: Provide a stable 24 VDC nominal supply within the specified voltage range.
- Signal Wiring: Match the 4–20 mA sink or source configuration to the receiving controller.
- Grounding: Follow the manufacturer's shielding and earthing recommendations.
- Unused Entry: Seal unused cable entries with approved blanking plugs.
- Final Inspection: Check wiring, enclosure sealing, and certification requirements before energizing.
Commissioning and Maintenance
Proper commissioning establishes reliable gas detection and alarm operation. Follow the approved site safety procedures and Honeywell technical manual.
- Initial Configuration: Confirm the H₂S sensor type and selected measurement range.
- Zero Calibration: Perform zero calibration under the specified gas-free conditions.
- Span Calibration: Apply certified H₂S calibration gas at the recommended concentration.
- Alarm Testing: Verify both alarm levels and the fault relay response.
- Output Testing: Check the 4–20 mA signal at the receiving control system.
- Display Inspection: Confirm gas readings and status indications.
- Routine Maintenance: Schedule bump tests and calibration according to site requirements.
- Sensor Replacement: Replace the sensor cartridge when performance or service-life limits require it.
Maintenance advantage: Magnetic configuration switches reduce routine access requirements. Plug-in sensor construction also simplifies replacement work.
System Compatibility
- PLC Systems: Connect through a compatible 4–20 mA analog input.
- DCS Systems: Integrate gas concentration and alarm signals into distributed control systems.
- Gas Monitoring Panels: Use programmable relays for external alarm and fault indication.
- Modbus Networks: Use the optional RS485 Modbus RTU interface when the required communication option is installed.
- Power Systems: Provide a compatible regulated DC supply.
Check input impedance, analog signal configuration, relay ratings, communication options, and wiring requirements before integration. The standard SPXCDALMHX ordering code does not include the optional Modbus suffix.
Certification and Compliance
- ATEX: Applicable certified hazardous-area protection.
- IECEx: International explosion-protection certification.
- KTL: Korean certification option.
- PA: Chinese product approval designation.
- GB: Chinese explosion-protection standard designation.
- Protection Rating: IP66 enclosure protection.
Verify the actual product nameplate and certificate scope before installation. Hazardous-area suitability depends on the complete equipment configuration and site classification.
Package Contents
- 1 × Honeywell SPXCDALMHX Sensepoint XCD transmitter and H₂S sensor kit.
- Standard mounting and connection components supplied with the ordered configuration.
- Product identification and applicable documentation, subject to the supplied package.
Optional accessories, calibration gas equipment, mounting brackets, and communication modules require separate confirmation.
Frequently Asked Questions
Q1: What gas does the Honeywell SPXCDALMHX detect?
It detects hydrogen sulfide (H₂S) using an electrochemical sensor. Its standard measurement range is 0–50 ppm.
Q2: Can SPXCDALMHX detect methane or combustible gases?
No. This model is configured for H₂S detection. Select a methane-specific catalytic or infrared model for combustible gas monitoring.
Q3: Does SPXCDALMHX support Modbus RTU communication?
Modbus RTU is an optional communication feature. Confirm the installed hardware and ordering suffix before planning an RS485 connection.
Q4: What should engineers check when replacing an existing Sensepoint XCD detector?
Check the gas type, sensor technology, enclosure material, cable entry, certification, supply voltage, and output configuration. Matching the Sensepoint XCD series alone does not guarantee direct interchangeability.
Q5: How should buyers select the correct Sensepoint XCD model?
Start with the target gas and required measurement range. Then verify sensor technology, hazardous-area certification, enclosure material, cable entry, and control-system interfaces. For H₂S applications, confirm the required alarm thresholds and calibration requirements before ordering.
Ordering and Supply Information
- Product: Honeywell Sensepoint XCD
- Model: SPXCDALMHX
- Condition: New & Original in Factory Packing
- Warranty: Factory Warranty: 12 Months
- Shipping: FedEx, UPS, DHL available
- Delivery: 24–48 hours shipping subject to stock confirmation
Contact Global PLC Spare HUB for product quotations, availability, technical documentation, and replacement support.
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Q: Are these parts 100% original and new?
A: Yes. Every component is guaranteed to be 100% original, brand-new, and factory-sealed. We also provide a 12-month comprehensive warranty for your peace of mind.
Q: How fast is the shipping to my country?
A: For in-stock items, we offer same-day dispatch. International express shipping (DHL/FedEx/UPS) typically delivers within 3–5 business days worldwide.
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A: Absolutely. Our sales team is ready to provide a detailed Proforma Invoice (PI) including the most competitive shipping rates for your location.
Q: Do you offer discounts for bulk orders?
A: We provide volume-based pricing for large projects or multiple-item orders. Please contact us to get our Best Price Guarantee.
12-Month Comprehensive Warranty
Every part supplied by Global PLC Spare Hub is covered by a 12-month warranty from the date of invoice.
- Coverage: Functional defects and hardware failures under normal operating conditions.
- Commitment: We provide immediate repair, replacement, or a full refund for any verified defective components to minimize your operational downtime.
Returns & Exchange Policy
We offer a 30-day return policy to ensure you receive the exact part your system requires.
- Eligibility: Returns are accepted for uninstalled items in their original, factory-sealed packaging.
- RMA Process: Please contact our support team to obtain a Return Merchandise Authorization (RMA) number before shipping.
- Fast Processing: Refunds or exchanges are processed within 3–5 business days after the returned item passes our technical inspection.
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