O2I-Flex
Oxygen Sensor Interface Board
FEATURES
* Provides the electronics necessary to power and control SST's range of zirconium dioxide (ZrO2 ) sensors
* Externally triggered automatic or manual calibration. Calibration can also be initiated via an on-board push button
* Power and sensor operating LEDs
* Removable polarised screw terminals for easy wiring
BENEFITS
* Adaptive software filtering provides a fast sensor response coupled with a stable oxygen output
* High accuracy linear output
* Can be calibrated in fresh air (20.7% O2 ) o r in any other known O2 concentration
TECHNICAL SPECIFICATIONS
Supply voltage 24V DC ± 10%
Supply current 600mA max. at 24V DC
Digital output RS232
Analogue output 4 ~ 20mA; load 100 ~ 600Ω
or 0 ~ 10V DC ; load 10kΩ min
Temperature limits
Storage: -10'C to +70'C
Operating: -10'C to +70'C
Oxygen pressure limits 1 ~ 1000mbar
OUTPUT VALUES
Oxygen range (analogue output) 0.1 ~ 25% O2
or 0.1 ~ 100% O2
Oxygen range (RS232 output) 0.1 ~ 100% O2
Accuracy after calibration 1% O2
Repeatability after calibration 0.5% O2
Output resolution:
0-10V DC : 0.01V
4-20mA: 0.01mA
RS232: 0.01% O2
Response time (step 10-90%)
Fast response sensor connected: < 4s
Standard response sensor connected: < 15s
Initial warm up time (till stable output) 5 ~ 10mins
Output inactive start up delay (heater warm up) 60s
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