DATA SHEET Zirconia O2 Sensors OXY-Flex Oxygen Analyser FEATURES * * * High accuracy linear output * Selectable output filtering allows adaptive, fast and Externally triggered automatic or manual calibration Can be calibrated in fresh air (20.7% O 2) or to any other known O2 concentration dynamic or slow and stable output Housing Supply Voltage Gas Temp BENEFITS Cycling 3.3VDC logic output allows direct monitoring of the O2 sensor pump cycle for diagnostic purposes * No reference gas required TECHNICAL SPECIFICATIONS 24VDC 10% 500mA max. at 24VDC RS232 4--20mA; load 600 max. 0--10VDC; load 10k min. or Housing temperature limits Storage: -10C to +85C Operating: -10C to +85C Permissible gas temperatures (probe tip) Standard: -100C to +250C High: -100C to +400C Gas flow rate 0 to 10 m/s Permissible acceleration Repetitive 5g Incidental 30g NOTES Analogue Output Response Time OUTPUT VALUES * Supply voltage Supply current Digital output Analogue output Digital Output 1) 2) 3) 4) Oxygen range (analogue output)2 or Oxygen range (RS232 output) Accuracy after calibration3, 4 Repeatability after calibration3 Output resolution Analogue 4--20mA Analogue 0--10VDC Digital RS232 Response time Warm up time (prior to sensor operation) Output stabilisation time 0.11--25% O2 0.11--100% O2 0.11 and 100% O2 1% O2 0.5% O2 0.01mA 0.01V 0.01% O2 < 15s 60s ~ 180s Need help? Ask the expert Tel: + 44 (0)1236 459 020 and ask for "Technical" Prolonged operation below 0.1% O2 can damage the sensing element. Range selectable by altering the position of the jumper links on the PCB; refer to PCB Layout on page 3. Assuming barometric pressure (BP) remains constant. As the O2 sensor measures the partial pressure of oxygen (PPO 2) within the measurement gas deviations in the BP from that present during calibration will cause readout errors proportional to the change. EG. if the sensor reads 21% O 2 at 1013.25mbar and the BP increases by 1%, the sensor readout will also increase by 1% to 21.21% O 2. OUTLINE DRAWING AND MOUNTING INFORMATION All dimensions shown in mm. Tolerances = 1mm. ELECTRICAL INTERFACE Housing: Amphenol Ecomate C016 30C006 100 12 Mating Connector: Binder 99-4218-00-07 NOTE: Mating connector also supplied. Pin Assignment 1 24VDC10% 2 GND 3 Calibrate 4 Cycle 5 4--20mA / RS232 Tx (see Note) 6 0--10VDC / RS232 Rx (see Note) CENTRE Housing / Probe Earth NOTE: Output pins 5 and 6 are both referenced to the supply GND (pin 2). Due to high current flow in the supply GND, when monitoring the 0--10VDC output (pin 6) it is recommended that a separate GND wire for the measurement system is taken from pin 2. This removes errors due to voltage drops in the power supply connections. Assignment of output pins 5 and 6 selectable by altering the position of the jumper links on the PCB; see PCB LAYOUT below. CIRCUIT DIAGRAM AND PCB LAYOUT ORDER INFORMATION Generate your specific part number using the convention shown below. Use only those letters and numbers that correspond to the options you require -- omit those you do not. Include the "OXY-FLEX" prefix. O X Y - F L E X - X Probe Length Gas Temperature 0 220mm BLANK -100 C to +250C 1 400mm H -100 C to +400C CAUTION - X INFORMATION Do not exceed maximum ratings and ensure sensor(s) are operated in accordance with their requirements. Carefully follow all wiring instructions. Incorrect wiring can cause permanent damage to the device. Zirconium dioxide sensors are damaged by the presence of silicone. Vapours (organic silicone compounds) from RTV rubbers and sealants are known to poison oxygen sensors and MUST be avoided. Do NOT use chemical cleaning agents. As customer applications are outside of SST Sensing Ltd.'s control, the information provided is given without legal responsibility. Customers should test under their own conditions to ensure that the equipment is suitable for their intended application. For technical assistance or advice, please email: technical@sstsensing.com Failure to comply with these instructions may result in product damage. General Note: SST Sensing Ltd. reserves the right to make changes to product specifications without notice or liability. All information is subject to SST Sensing Ltd.'s own data and considered accurate at time of going to print. DS-0073 REV 14 (c) 2017 SST SENSING LTD. 5 H A GM ILL C RESE N T, SHAW HEA D IN DU S TR IA L E S TA TE, C OA TB R ID GE, U K M L5 4 NS w w w .sstsensi ng .com | e: sal es@ss tse nsin g.com | t : + 44 ( 0 )12 36 4 5902 0 | f: +4 4 (0 ) 123 6 459 02 6