Oxymac50, DE800, Elecdit Oxygen Sensor Interface Boards DESCRIPTION The Oxymac 50, Elecdit and DE800 sensor interface boards Oxymac50 is a recently upgraded interface that offers similar are control and measurement devices for Honeywells range of performance to the Elecdit board but operates from a 24 Vdc dynamic, highly accurate oxygen sensors. The ability of these power supply. sensors to operate without any reference gas makes them ideal for potential applications such as combustion and The DE800 interface offers the features of the Oxymac50 but environmental control. also contains the heating element power source. Honeywell oxygen sensors using zirconia-based sensing The Elecdit interface was developed for Industrial applications elements require external connection to an electronic and offers a level of noise protection. It operates from a 15 V measuring circuit to control sensor operation and signal supply. processing. Oxymac50 and DE800 are the recommended interfaces for A heating element on the sensor produces the 700 C new applications. 1292 F required for the ZrO to achieve its operational 2 temperature. These interface boards supply the sensor with The interfaces are supplied ready for mounting into customers the necessary circuits to provide this control and processing, enclosures. Oxymac50 a 15-pin D type connector, DE800 has while also providing sensor calibration. The DE800 interface screw connector block and Elecdit has 2,5 mm x 2,5 mm also includes the heater supply, while the Oxymac50 and 0.1 in x 0.1 in pin connector. Elecdit require an external heater power supply. FEATURES AND BENEFITS POTENTIAL APPLICATIONS Provides the necessary circuits to control Honeywell Boiler combustion controls oxygen sensors which removes the need to implement Aircraft oxygen generation systems sensor control circuits within the customers equipment Functional testing and calibration in ambient air removes effects of barometric or application pressure PCB board format provides ease of mounting and calibration access Linear output of measured oxygen content in voltage or current format for a flexible interconnection Low power consumption for lower running costs Oxymac50, DE800, Elecdit 1 Table 1. Technical Specifications Characteristic Oxymac50 DE800 Elecdit Measuring range 0% to 25% oxygen (standard) 0% to 100% oxygen (option) Power source +24 Vdc 20% +24 Vdc 20% 15 Vdc 10% Other inputs calibration trigger, sensor calibration trigger, sensor calibration trigger, sensor pump, sense and common, pump, sense, common, pump, sense and common test heater, test Power consumption (interface) <250 mW <500 mW <250 mW 2 2 Outputs 0 V to 10 V, 4 mA to 20 mA 4 mA to 20 mA, 0 V to 10 V , 0 V to 10 V, LED drive pulse Accuracy 2% full scale Resolution 0.04 V Operating temperature -10 C to 60 C 14 F to 140 F Storage temperature -10 C to 50 C 14 F to 122 F Dimensions 63 mm x 108 mm 80 mm x 100 mm 60 mm x 42 mm x 17 mm 2.48 in x 4.25 in 3.12 in x 3.98 in 2.36 in x 1.65 in x 0.67 in Mounting holes 4 mm 0.16 in dia. 6,5 mm 0.26 in dia. Connector 15 pin male D connector screw connector block 2 x 5 pin 2,5 mm x 2,5mm 0.1 in x 0.1 in Mates with GMS-10, KGZ-10, KGZ-12 Notes: 1. For warm up time and other sensor characteristics, refer to datasheet 100470-EN. 2. Factory set to voltage or current output. OPERATING AND CALIBRATION NOTES (See Figure 1 Oxymac50 Reset the Oxymac50 by turning the power off/on. The output signal may be 0 V to 10 V or 4 mA to 20 mA. It is factory set by the solder bridge JP1. Proper operation of a connected sensor and electronic circuit may be tested with the test switch or with an external signal. The output signal should indicate a 20% lower value after switching the test function. A blinking LED D3 indicates proper sensor operation. The sensor and Oxymac50 circuit may be calibrated in normal air. The Oxymac50 circuit stores the calibration value after a power loss. DE800 The heater voltage of the sensor may be adjusted with pot meter PC419. After pressing the test button, the output must go to a 20% lower output signal. Testing with an external (24 V) signal is possible via terminal TE. The sensor may be calibrated in normal air with the calibration button. Calibration is lost after power loss. A blinking LED D4 indicates proper sensor operation. A pulse signal may be measured at terminal K2 if the sensor is functioning properly. Elecdit The interface is factory set. Follow these adjustment/calibration instructions for sensor replacement: 1. Adjust Pot1 to 12 V (internal 6 V) at Pin 2. 2. Adjust Pot2 to reference at Pin 1 to 10 V 0.2 V. 3. After approx 60 s an impulse (blinking) signal should be present at Pin 1. Apply 95 mbar air at the sensor, adjust Pot5 at Pin 9 to 0.8 V, then apply 1013 mbar air at the sensor and adjust Pot3 at Pin 9 Uout to 8.3 V. 4. Adjust Pot4 to 0 mV at Pin 10. 5. Adjust Pot5 to Uout to 0 V at Pin 9. 2 www.honeywell.com/sensing