Safeguard Analytics
Product Data Sheet
August 2026

Model SA-220

Industrial Gas Detector

The SA-220 is an advanced single gas detection transmitter designed for use with the full range of SA2 smart sensor modules. The diffusion-based detector identifies gas type, sensitivity range, and serial number at startup and guides the user through zero and span calibration with a full-color display. It supports configurable sleep modes, GPS entry details, 10 event logs, optional relays, an intrinsically safe sensor interface, and a choice of ABS plastic, aluminum, or stainless steel housings.

SA-220 product photograph

Specifications1

System
Detector TypeModel SA2 Smart Sensor Module
Detection MethodDiffusion
User InterfaceOpCheck® Android/iOS app or magnetic interface
Mechanical
MountingBracket or pole; 2-3/4 in NPT ports
Dimensions9.17 in (233 mm) H × 5.2 in (132 mm) W × 5.06 in (129 mm) D
Electrical
Input Voltage10-30 VDC with connector board
Power Consumption0.75 W to 2 W (sensor dependent)
OutputsModbus & 4-20 mA
Optional Relays5 V, 2 A dry contact
Sensor InterfaceIntrinsically safe sensor interface
Area Classification
RatingEngineered to comply with Class I, Div 1 standards for stainless steel and aluminum configurations (certification in progress)
Environmental
Temperature-40 °C to +60 °C (-40 °F to +140 °F)
Humidity0-99% non-condensing
Warranty
Transmitter2 years
Smart SensorSensor technology dependent

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

Area Classification

- Designed to Class I, Div 1, Groups A, B, C, D standards for stainless steel and aluminum configurations

- Global certifications pending: CSA, UL, ATEX, and IECEx

Applications

- Fixed-point monitoring across industrial facilities

- Standalone installations or networked to SCX

- Hazardous and harsh environments

- Integration with Modbus & 4-20 mA hosts and PLCs

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