
Model SA-220NH
Non-Hazardous Gas Detector
The SA-220NH is a fixed gas detector built for non-hazardous ambient-air applications. It pairs a full-color TFT display with plug-and-play SA2 smart sensor modules, so the detector automatically reads gas type, sensitivity range, and serial number at startup. An ABS housing, magnetic interface, and optional Bluetooth configuration through the OpCheck app make it a practical choice for commercial and light industrial installations where hazardous-area certification is not required.

Specifications1
1 Specifications subject to change without notice.
Features
Universal Transmitter
- Full-color digital display
- Non-intrusive magnetic interface
- Plug-and-play SA2 smart sensor modules across a wide gas catalog
- Auto-configuration with the SCX control system
- 10 Event Logs
- Bluetooth connect to OpCheck® application for Android and iOS handhelds
- Optional relay output: 3 alarm levels and fault - 5 V, 2 A dry contact
Integration
- Serial Modbus RTU (single address) & analog 4-20 mA DC per active channel
- Power input: 10-30 VDC
- Power consumption: 0.75 W to 2 W (smart sensor dependent)
Environmental & Enclosure
- Temperature range: -40 °C to +60 °C (-40 °F to +140 °F)
- Humidity: 0-99% RH non-condensing
- Ingress protection: NEMA 4X, IP66
- ABS housing for non-hazardous locations
Area Classification
- Non-hazardous locations
- Suitable for commercial and light industrial ambient-air monitoring
Applications
- Non-hazardous fixed point monitoring in industrial facilities
- Standalone installations or networked to SCX
- Commercial and light industrial environments
- Integration with Modbus & 4-20 mA hosts and PLCs
