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Содержание XZR250

Страница 1: ...XZR250 User s Manual Michell Instruments 1 PRODUCT OVERVIEW XZR250 Oxygen Analyzer User s Manual 97528 Issue 5 May 2019...

Страница 2: ...een purchased Use this information when contacting Michell Instruments for service purposes Instrument Code Serial Number Invoice Date Location of Instrument Tag No Instrument Code Serial Number Invoi...

Страница 3: ...XZR250 User s Manual Michell Instruments iii XZR250 For Michell Instruments contact information please go to www michell com...

Страница 4: ...YSTEM ELEMENTS 11 4 1 Human Machine Interface HMI 11 4 2 On Screen Settings 13 4 3 Menu Structure 14 4 4 Configurable Options 15 4 5 Security Password 15 4 6 Analog Output Ranges 17 4 6 1 Display Outp...

Страница 5: ...37 Appendices Appendix A Technical Specifications 36 Appendix B Theory of Operation 39 Appendix C Quality Recycling Warranty Information 43 Appendix D Analyzer Return Document Decontamination Declarat...

Страница 6: ...rument The input power supply voltage is 24 V 10 via limited power supply Pressure Safety The XZR250 is designed to be operated at atmospheric pressures Toxic Materials The use of hazardous materials...

Страница 7: ...F degrees Fahrenheit DC direct current EU European Union kg kilogram s l min liters per minute lb pound mA milliampere max maximum min minute s scfh standard cubic feet per hour Td cycle time to evacu...

Страница 8: ...ed by the presence of silicone Vapors organic silicone compounds from RTV rubbers and sealants are known to poison oxygen sensors and MUST be avoided Do NOT use chemical cleaning agents Failure to com...

Страница 9: ...or head and not the probe this ensures a more stable measurement and longer sensor life The XZR250 uses a zirconium oxide ZrO2 sensor which should last for up to 7 years in natural gas fired boilers I...

Страница 10: ...cordance with the national and or any local codes ordinances and regulations Disconnect and lock out power before connecting the equipment to the power supply CAUTION Do NOT install the device suspend...

Страница 11: ...bbon cable from the panel and remove panel Figure 2 Front Panel 2 Select a suitable cable with the correct number of cores for your model that conforms to site standards The cable gland fitted as stan...

Страница 12: ...g a 20mm spanner tighten the cable gland to secure the cable in place NOTE Be careful not to over tension the wires or over tighten the gland 6 Reconnect the ribbon cable to the front panel 1 7 Re fit...

Страница 13: ...he maximum loop load resistance for mA output 550 PIN 5 Analog GND PIN 6 Analog Out1 PIN 7 Analog Out2 If fitted Relay alarm Contacts PIN 8 Relay 1 N O PIN 9 Relay 1 Common PIN 10 Relay 2 Fault alarm...

Страница 14: ...ce purposes and make allowances for access to the wiring and piping inlets which are at the base of the sensor head The device must be securely fitted to a suitable surface using the 2 150lb ANSI moun...

Страница 15: ...The probe should be mounted horizontally or ideally at an angle of approximately 5 to the flue wall as shown in figure 6 Figure 7 Mounting Examples CAUTION The gas temperature must not exceed 700 C fo...

Страница 16: ...g adaptor into place concentric with the hole in the flue Drill and bolt the mounting adaptor to the flue 3 Before bolting in place fit a suitable gasket between the adaptor and the flue wall A gasket...

Страница 17: ...yed to aid alignment 4 Keep the sensor head oriented with the sensor upwards until just before fitting the probe to avoid dropping the sensor during installation 5 With the clamp fitted over the senso...

Страница 18: ...twisted Ensure the device is connected properly with all its inputs and outputs complete All screw terminals are properly tightened CAUTION Test the power supply to ensure it is 24VDC 10 via a limited...

Страница 19: ...the sample A sensor block to measure the gas contains O2 pressure temperature sensors A sensor head to house the sensor provides electrical outputs and an HMI for local configuration 4 1 Human Machin...

Страница 20: ...t this guide the following conventions apply Left Down button press is shown as LEFT or DOWN Right Up button press is shown as RIGHT or UP Enter Back Home button press is shown as ENTER BACK or HOME T...

Страница 21: ...following parameters are displayed on screen Figure 12 LCD Layout 1 Top left Measured parameter 2 Lower left Measurement value 3 Top right Position within the menu structure 4 Lower right Unit of mea...

Страница 22: ...Set lower limit UPPER Set upper limit HYSTERESIS Set hysteresis Current 02 Current parameters Set lower limit Set upper limit INTERFACE 03 UNAVAILABLE Interface menu TEST 04 Test menu Relay 01 Relay...

Страница 23: ...1 Single or dual line display 4 5 Security Password The analyzer is supplied with the password factory set to 0000 If you wish to change the password follow the instructions below 1 Press ENTER the E...

Страница 24: ...lighting the characters using the enter button and the up and down arrows to select the numbers the number will have two brackets around it as shown below 7 Deselect each number by pressing the enter...

Страница 25: ...output at the set limits therefore at 2 O2 or below the analyzer would output 4mA and 8 O2 or above it would output 20mA 1 Press ENTER the ENTER PASSWORD screen is displayed 2 Input your current secur...

Страница 26: ...on power loss 8 Press and hold the HOME button to return to the HOME screen display will flash three times 4 6 1 Display Output The analyzer is factory set to display O2 percentage on the main page a...

Страница 27: ...displayed 7 Press ENTER to access edit mode 8 Press ENTER to edit the default value 9 Press RIGHT to change the output value from Single to Multiple 10 Press ENTER to save 11 Press RIGHT to tab along...

Страница 28: ...is likely the sensor should be protected from water reaching the very hot sensor cap as this can cause massive temperature shocks to the cell and heater For this reason the probe must be installed in...

Страница 29: ...to these metal vapors must be avoided 5 2 3 Halogen and Sulphur Compounds Small amounts 100ppm of Halogens and or Sulphur compounds have no effect on the performance of the oxygen sensor Higher amount...

Страница 30: ...Never use any of the following for cleaning purposes Chemical cleaning agents High pressure water or steam 6 1 2 Inner sampling tubes The gas sampling tubes allow the sample gas from the boiler to fl...

Страница 31: ...gen concentration 1 21 Any new calibration value will be stored on power loss For optimum performance it is recommended that the sensor is calibrated close to the oxygen concentration expected during...

Страница 32: ...ing operation as ambient air could be drawn into the analyzer and raise the oxygen readings 2 Turn the calibration gas ON and set the flow to approximately 150ml min 3 Press ENTER the ENTER PASSWORD s...

Страница 33: ...en complete 12 The output will now track to the correct value for the calibration gas 13 The new calibration value is now stored in memory and is retained on power loss 14 Press and hold the HOME butt...

Страница 34: ...creen is displayed 2 Input your current security password refer to section 4 5 Security Password The CALIBRATE menu is the first menu option displayed 3 Press RIGHT four times until the TEST screen is...

Страница 35: ...ENTER the ENTER PASSWORD screen is displayed 2 Input your current security password refer to section 4 5 Security Password The CALIBRATE menu is the first menu option displayed 3 Press RIGHT four time...

Страница 36: ...he asterisk d Press ENTER to start testing e With the STOP screen displayed press RIGHT to tab along to the asterisk f Press ENTER to stop testing 6 Press ENTER again to exit edit mode 7 Press and hol...

Страница 37: ...Code Description Warning Code Description 00001 Pump error 00001 Asymmetry warning 00002 Heater error 00002 O2 less than 0 1 oxygen 00004 Over temperature 16384 Out of range greater than 100 32768 Int...

Страница 38: ...to dismantle Figure 13 Components Parts List Tools If necessary 1 Sensor Head Small flat blade terminal screwdriver 2 Clamp Phillips screwdriver 3 Mounting flange 10mm socket or spanner 4 Probe body 2...

Страница 39: ...3 Loosen clamp 2 and carefully withdraw sensor head 1 from the probe body 4 WARNING The sensor head 1 is a tight fit to the probe body 4 adjust your stance to ensure you are safe and stable before try...

Страница 40: ...placement may be necessary if the sensor is no longer responding correctly to the target gas or has reached its end of life NOTE Replacement sensing modules can be obtained by contacting the manufactu...

Страница 41: ...aid alignment CAUTION Do NOT force the module otherwise you may damage the terminals or other components within the housing Figure 14 Insert Sensor block 6 Replace the sensor head as described in Sect...

Страница 42: ...ew front panel 5 Re fit the front panel 1 to the housing and secure in place using the four screws 6 Re fit the two screw covers 2 9 5 Disposal The device contains both electrical and mechanical compo...

Страница 43: ...XZR250 User s Manual Michell Instruments 35 APPENDIX A Appendix A Technical Specifications...

Страница 44: ...Relays 1 x System alarm SPST N O as standard 1 x User configurable process alarm SPST N O as standard Digital communications RS485 protocol Cable Gland M12 x 1 5 Cable size 7mm to 12 5 mm outer diamet...

Страница 45: ...ions up to 750 C for 30 minutes will not damage the probe Dimensions Dimensions in mm unless otherwise stated tolerance 1mm Figure 15 External Dimensions Flange Dimensions Dimensions in mm unless othe...

Страница 46: ...XZR250 User s Manual 38 97528 Issue 5 May 2019 APPENDIX B Appendix B Theory of Operation...

Страница 47: ...ssure which the single gas component would exert if it alone occupied the whole volume Dalton s Law The total pressure ptotal of a mixture of ideal gases is equal to the sum of the partial pressures p...

Страница 48: ...tamination of the cell which may lead to unstable measurement readings The above figure shows a cross section of the sensing cell with all the major components highlighted A heater coil which produces...

Страница 49: ...ence voltages and every time either of these two references is reached the direction of the constant current source is reversed When the PPO2 is high it takes longer to reach the pump reversal voltage...

Страница 50: ...XZR250 User s Manual 42 97528 Issue 5 May 2019 APPENDIX C Appendix C Quality Recycling Warranty Information...

Страница 51: ...ives Full information can be found on our website at www michell com compliance This page contains information on the following directives ATEX Directive Calibration Facilities Conflict Minerals FCC S...

Страница 52: ...XZR250 User s Manual 44 97528 Issue 5 May 2019 APPENDIX D Appendix D Analyzer Return Document Decontamination Declaration...

Страница 53: ...als YES NO Radioactive substances YES NO Other hazards YES NO Please provide details of any hazardous materials used with this equipment as indicated above use continuation sheet if necessary Your met...

Страница 54: ...http www michell com...

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