OXY-LC-485 SST Sensing

DATA SHEET OXY-LC Oxygen Sensor Interface Board FEATURES Provides the electronics necessary to power and control SSTs range of zirconium dioxide (ZrO ) 2 sensors Built in pressure sensor for barometric pressure compensation Interface mounted screw terminals for easy wiring with reverse voltage and transient overvoltage Supply Temp Digital Analogue Response Voltage Output Output Time BENEFITS OUTPUT VALUES 2 Oxygen range (analogue output) 0.1 25% O 2 Adaptive software filtering provides a fast sensor 2 or 0.1 100% O 2 response coupled with a stable oxygen output 2 Oxygen range (Modbus RTU) 0.1 100% O 2 High accuracy linear output 3 Accuracy after calibration 0.5% O 2 Repeatability after calibration 0.5% O 2 Output resolution 0.01% O 2 TECHNICAL SPECIFICATIONS Response time (step 1090%) Fast response sensor connected: 4s Supply voltage Standard response sensor connected: 15s RS485 variant: 828V DC Initial warm up time (till stable output) 510mins Analogue variants: 2028V DC Output inactive start up delay (heater warm up) Supply current 600mA max. at 24V DC From OFF to ON mode: 60s 1.2A max. at 12V DC Digital output RS485 (Modbus RTU) From Standby to ON mode (RS485 only): 20s or PWM Analogue output 420mA load 600 max or 010V load 10k min DC Temperature limits Need help Ask the expert Storage: -40C to +85C Tel: + 44 (0)1236 459 020 Operating: -30C to +70C and ask for Technical 1 Operating pressure limits 2601260mbar absolute 1) Sensor and interface for correct barometric pressure compensation. 2) Prolonged operation below 0.1% O can damage the sensing element. 2 NOTES 3) Analogue output variants accuracy stated is valid when calibrated at the default calibration value. RS485 variant accuracy stated is valid when calibrated at the default 20.7% O over the range 0.1 to 25% O . For maximum accuracy 2 2 above 25% O the interface and sensor should be calibrated to full scale of the required range using certified gas. 2 OUTLINE DRAWING AND MOUNTING INFORMATION All dimensions shown in mm. Tolerances = 1mm.