Gas Detection Transmitters
Diffusion based gas detection
Model SA-220
Gas Detector
Model SA-220 is an advanced single or dual gas detection transmitter designed for use with Safeguard Analytics’ complete range of Model SA2 “smart sensor modules”.
A diffusion-based detector, with the gas type and sensitivity range determined by installing an application-specific Model SA2 Smart Sensor module. Equipped with a full color digital display, at startup, the detector automatically identifies the gas type, sensitivity range, and serial number. The device self-guides the user in the calibration process for zero and span calibration, providing a record of last calibration date. This device also has configurable sleep modes, GPS entry details and event logging.
Optional features include relay outputs, intrinsically safe barrier for hazardous environments and choice of housing between ABS plastic for non-hazardous environments and aluminum or stainless steel for hazardous environments. The SA-220 can be used standalone, auto-configured to our SCX Controller or any other device that receives MODBUS or 4-20mA outputs.
Universal Transmitter
- Full color digital display
- Non-Intrusive magnetic interface
- Plug and play “smart sensor modules” for a wide range of gases
- Auto-configuration with Safeguard Analytics control systems
- Event logging
- Bluetooth connect to OpCheck® application for Android
handhelds - Optional Relay Output (3 alarm levels and fault)
Integration
- Serial Modbus RTU (Single address)
- Analog 4-20mA DC (each active channel)
- Power input: 10-30 VDC
- Power consumption: 0.75 to 2 watts (smart sensor dependent)
Environmental
- Temperature range: -40◦C to +70◦C
- Humidity range: 0-99% RH non-condensing
Ingress Protection
- NEMA 4X, IP66
Area Classification
- Hazardous location (global certifications pending)
- Class I Div 1 Groups B,C,D
- Class I, Zone I Group IIB +H2
SYSTEM
Detector Type: Model SA2 Smart Sensor Module
Detection Method: Diffusion
User Interface: OpCheck Android App or Magnetic Interface
MECHANICAL
Mounting: Bracket or Pole, 2-3/4in NPT Ports
Dimensions: 9.17(233mm) H x 5.2in(132mm) W x 5.06in(129mm) D
ELECTRICAL
Input Voltage (Direct): 3-5 VDC
Input Voltage (System): 10-30 VDC with connector board
Power Consumption: 30 milliwatts to 1.2 watts (sensor dependent)
AREA CLASSIFICATION
Engineered to comply with Class I, Div 1 standards (certification in progress)
ENVIRONMENTAL
Temperature Range: -40◦C to +60◦C
Humidity Range: 0-99% non-condensing
WARRANTY
Transmitter: 2 Years
Smart Sensor: Sensor technology dependent
OpCheck®
Calibration and Maintenance
Elevate the level of safety & reliability in fixed point gas detection installations by combining continuous supervision of the sensor and associated circuits then add analysis of performance data during routine calibration.
