XNXXSM1SS Honeywell Smart Sensor NO Modbus RTU

Honeywell XNXXSM1SS Smart Sensor for Nitric Oxide (NO)

Technical Specifications

• Brand: Honeywell
• Model: XNXXSM1SS
• Gas Type: Nitric Oxide (NO) / Nitrogen Monoxide
• Default Full Scale Range: 100 ppm (selectable range not applicable)
• Lower Detectable Limit: 3 ppm
• Accuracy: ±2 ppm
• Response Time (T50): < 15 seconds
• Response Time (T90): < 30 seconds
• Calibration Gas Range: 30% to 70% of selected full scale
• Default Calibration Point: 50 ppm
• Physical Layer: Isolated RS485
• Baud Rate: 1200 to 19.2K baud
• Maximum Nodes: 254 XNX compatible transmitters only
• Protocol: Modbus RTU
• Connections: RS485+, RS485-, Drain
• Operating Temperature: -20°C to 55°C (-4°F to 131°F)

Frequently Asked Questions (FAQ)

• Q: Is the Honeywell XNXXSM1SS a new and original product?
  A: Yes, we supply only brand new, original modules. We do not sell used or refurbished units.
• Q: What is the maximum number of nodes on the Modbus network?
  A: The network supports up to 254 XNX compatible transmitters. The XNXXSM1SS acts as one node on this RS485 bus.
• Q: Can I install this module in the field by myself?
  A: Only a qualified service engineer should perform field installation to avoid damage or improper wiring.
• Q: How long does shipping take and which carriers do you use?
  A: We dispatch orders within 5 days via FedEx, UPS, or DHL. Delivery times vary by destination but typically range from 2 to 5 business days.
• Q: Does this module work with Foundation Fieldbus or relays simultaneously?
  A: No, the Modbus output is mutually exclusive with relays and Foundation Fieldbus options. You must choose one communication method.
• Q: What is the default calibration point and range?
  A: The default calibration point is 50 ppm. You can select a calibration gas between 30% and 70% of the full scale range (100 ppm default).
• Q: Do you accept returns if the product does not meet our needs?
  A: Yes, we support returns within 30 days of delivery. The module must be in new, unused condition with all original packaging.
• Q: What is the operating temperature range for this sensor?
  A: The Honeywell XNXXSM1SS operates reliably from -20°C (-4°F) to 55°C (131°F).

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