MF010 Series Low Temperature and MF020 Series High Temperature Oxygen Sensors DESCRIPTION The MF010 Series Low Temperature Oxygen Sensors is designed to determine the oxygen concentration in air or inert gas mixtures with temperatures of -100 °C to 250 °C [-148 °F to 482 °F] max. The MF020 Series High Temperature Oxygen Sensors is designed to determine the oxygen concentration in air or inert gas mixtures with temperatures of -100 °C to 400 °C [-148 °F to 752 °F] max. These products are particularly suitable for measuring oxygen in areas that are not easily accessible, or in closed systems. The MF010 and MF020 Series may both be supplied with a measuring range of 0.1 vol%O2 to 25 vol%O2 and 0.1 vol%O2 to 100 vol%O2. The entire measurement range is linear for both series. The sensor detects the gas mixture’s oxygen partial pressure (absolute oxygen content) by using a dynamic process that occurs on two zirconium dioxide discs which form a hermetically sealed chamber. Because no chemical substances are used, the sensor exhibits significantly longer service life than an electrochemical sensor. The actual oxygen sensor is mounted in the tip of the bar probe and is protected by a stainless-steel sintered disk which serves as a flame back-flash stop. The water-proof plastic housing accommodates the electronics and is mechanically connected to the bar probe. FEATURES No moving parts Low power consumption No need for temperature stabilization Functional testing and calibration in ambient air Long life Sensor electronics include: 1. Signal amplifier 2. Control for the ionic pump with an analog component 3. Test component 4. Internal monitoring logic component 5. Power supply for the sensor heating element and the analog and digital components 6. Reset 7. Voltage monitor 8. Analog output 9. Bi-directional digital output 10. Internal potentiometer The sensor outputs the measured values via an analog channel (4 mA to 20 mA or 0 V to 10 V) and a digital channel (also provides any error signals) which are evaluated and further processed in a user-specified external mounting device such as a fuel controller, display, measuring instrument, programmable logic controller or ventilation system. Both series may be calibrated manually or self-calibrated using atmospheric air instead of a reference gas. The sensor can also conduct external operational self-tests. Both series may also operate in a fault-proof mode. The sensor self-monitors during operation and provides error signal output. A second oxygen sensor is not necessary. POTENTIAL APPLICATIONS Boiler combustion controls Aircraft oxygen generation systems MF010 Series and MF020 Series Table 1. MF010 Series Specifications and Order Information Characteristic Catalog Listing MF010-0-LC1 MF010-0-LC2 MF010-0-LC3 MF010-0-LC4 MF010-1-LC1 MF010-1-LC2 MF010-1-LC3 MF010-1-LC4 MF010-2-LC1 MF010-2-LC2 MF010-2-LC3 MF010-2-LC4 Temperature range at probe tip -100 °C to 250 °C [-148 °F to 482 °F] Output 0 Vdc to 10 Vdc 4 mA to 20 mA O2 range (O2 partial pressure) 1 mbar to 250 mbar 1 mbar to 1000 mbar 1 mbar to 250 mbar 1 mbar to 1000 mbar with equivalent O2 output 0.1 vol%O2 to 25 vol%O2 0.1 vol%O2 to 100 vol%O2 0.1 vol%O2 to 25 vol%O2 0.1 vol%O2 to 100 vol%O2 Probe length: -0-LXX 220 mm [8.7 in] -1-LXX 400 mm [15.7 in] -2-LXX 600 mm [23.6 in] Table 2. MF020 Series Specifications and Order Information Characteristic Catalog Listing MF020-0-LC1 MF020-0-LC2 MF020-0-LC3 MF020-0-LC4 MF020-1-LC1 MF020-1-LC2 MF020-1-LC3 MF020-1-LC4 MF020-2-LC1 MF020-2-LC2 MF020-2-LC3 MF020-2-LC4 Temperature range at probe tip -100 °C to 400 °C [-148 °F to 752 °F] Output 0 Vdc to 10 Vdc 4 mA to 20 mA O2 range (O2 partial pressure) 1 mbar to 250 mbar 1 mbar to 1000 mbar 1 mbar to 250 mbar 1 mbar to 1000 mbar with equivalent O2 output 0.1 vol%O2 to 25 vol%O2 0.1 vol%O2 to 100 vol%O2 0.1 vol%O2 to 25 vol%O2 0.1 vol%O2 to 100 vol%O2 Probe length: -0-LXX 220 mm [8.7 in] -1-LXX 400 mm [15.7 in] -2-LXX 600 mm [23.6 in] Table 3. MF010 and MF020 Series General Specifications Characteristic Parameter Supply voltage 24 Vdc ±5% Supply current 500 mA Ambient temperature (includes solar radiation -10° C to 50° C [14 °F to 122 °F] Resolution 12 bit Heat-up time approx. 10 min Accuracy ±2% FS (Full Scale) Reproducibility ±1% FS (Full Scale) Gas flow rate 0 m/s to 10 m/s Reaction time approx. 3 s Incidental permissible acceleration 30 g Repetitive permissible acceleration 5g Bar probe material stainless steel 1.4301 Housing material Makrolon 8030 (30% GV), UL94 V-1 Housing sealing IP65 Connector sealing IP67 Weight (without bar probe) 150 g [5.3 oz] Termination (female connector) 99-4226-14-07 (Binder 693 series) Certification complies with EMC directives EN 50082-2 and EN 50081-1 and directives 89/336/EWG and 92/31/EWG 2 www.honeywell.com/sensing Oxygen Sensors Figure 1. Dimensional Drawing and Pinout (For reference only: mm/in.) 105,0 [4.13] Varies with catalog listing. See Table 1.) Pin 88,0 [3.46] 27,7 [1.09] 17,5 [0.69] 21,0 [0.83] 30,0 [1.18] 35,5 [1.38] 42,5 [1.67] 1 +24 Vdc 2 0V 3 not assigned 5 Channel 1 (4 mA to 20 mA) Ø12,0 [0.47] Ø9,0 [0.35] 2 3 0 V or 4 mA = 0 Vol%O2 10 V or 20 mA = 25 Vol%O2 5V 0V Channel 2 (I/O) calibration switch ground 7 Ø26,5 [1.04] 4 input +24 Vdc 14,0 [0.55] 21,0 [0.83] 1 7 5 4 6 60,0 [2.36] 6 42,0 [1.65] Ø0,21 [5.3] Figure 2. System Block Diagram Figure 3. Sensor Mounting Partition Housing Atmospheric Air 50 °C [122 °F] Max. Gas Mixture 250 °C [482 °F] Max. (MF010) 400 °C [752 °F] Max. (MF020) 15° MF010/MF020 Sensor Bar Probe Calibration Ground Connection Cable Test 1 kOhm + LED Order Guide Catalog Listing 0V User-Specified External Monitoring Device (4 mA to 20 mA or 0 V to 10 V Output) Power Supply 24 Vdc Partition Bar Probe O-Ring Nut Weld Socket Description MF010 Series Low temperature oxygen sensor (See Table 1 for specifics.) MF020 Series High temperature oxygen sensor (See Table 2 for specifics.) 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