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WM281/291 User’s Manual

Michell Instruments

19

appendix C

Appendix C

Digicor2 280/290

Communications Kit (optional)

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Содержание WM281

Страница 1: ...WM281 291 Premium Wall Mount RH Temperature Transmitters User s Manual 97463 Issue 1 July 2014 T 2 4 5 DP 1 1 25 H 4 5 7 C F...

Страница 2: ...formation when contacting Michell Instruments for service purposes Transmitter Code Serial Number Invoice Date Location of Instrument Tag No Transmitter Code Serial Number Invoice Date Location of Ins...

Страница 3: ...ay not be copied or otherwise reproduced communicated in any way to third parties nor stored in any Data Processing System without the express written authorization of Michell Instruments Ltd For Mich...

Страница 4: ...pply 5 2 5 4 Digital Serial Interface 6 2 5 4 1 Modbus Register Holding Map 6 2 6 Analog Output Configuration 6 2 7 Interchangeable Sensor Module 7 2 8 Calibration Reference Equipment 7 2 9 Certificat...

Страница 5: ...endix D EC Declaration of Conformity 22 Appendix E Quality Recycling Warranty Information 24 E 1 Pressure Equipment Directive PED 97 23 EC 24 E 2 Recycling Policy 24 E 3 WEEE Compliance 24 E 4 RoHS2 C...

Страница 6: ...urer for use with the instrument Toxic Materials The use of hazardous materials in the construction of this instrument has been minimized During normal operation it is not possible for the user to com...

Страница 7: ...ec meters per second RH relative humidity s second T temperature V volt Warnings The following general warning listed below is applicable to this instrument It is repeated in the text in the appropria...

Страница 8: ...calculated providing 4 20 mA 0 20 mA 0 10 V 0 1 V and 0 5 V The 290 Series Transmitters are equipped with an LCD display mounted in the cover of the housing making it possible to display the temperat...

Страница 9: ...renheit F Absolute humidity The mass of vapor present in the unit of volume of humid gas at defined temperature and pressure levels The unit of measure is 1g of water cubic meter g m3 Mixing ratio or...

Страница 10: ...site choice for the transmitter must be made bearing in mind the effectiveness of air circulation The point at which the sensor is installed must be typical of the surrounding environment where the me...

Страница 11: ...ansmitters can be equipped with the following filter models K7 Standard Delrin cap with steel mesh filter for use in environments which are relatively clean and where there is poor ventilation H2 Sint...

Страница 12: ...12 13 14 Figure 3 Electrical Connections The electrical connection box is located in the main body of the WM281 291 Transmitters Undo the four screws on the face of the transmitter and carefully lift...

Страница 13: ...ix B 2 6 Analog Output Configuration On the WM281 291 Transmitters configuration of the three analog outputs can be achieved automatically via the RS485 Modbus interface with the Digicor2 Configuratio...

Страница 14: ...f all I7000 sensor modules include the serial number the date of calibration 2 8 Calibration Reference Equipment The following calilbrators are available for the WM281 291 Transmitters 503 Humidity ca...

Страница 15: ...low Once the required sub menu is reached edit by pressing the key then choose the value by pressing the up and down keys and confirm by pressing the key then choose the key To exit the sub menu press...

Страница 16: ...otected mode by changing the password from 99 to any other value or by power supply disconnection 3 Out Temperature Out type 4 20 mA 0 20 mA 0 10 V 0 1 V 0 5 V Low scale High scale refer to Section 2...

Страница 17: ...Issue 1 July 2014 OPERATION 8 RH Calibration Set RH Restore factory settings NOTE Changes to some of these settings may lead to the loss of calibration data and should only be changed by qualified per...

Страница 18: ...cb connector as per Section 2 5 1 Insert the USB connector into the PC and follow the instructions as in Section 4 2 below 4 2 Software Installation To install the Digicor2 software make sure all runn...

Страница 19: ...ng care not to bend the male pins on the sensor electrical connector remove the I7000 to be replaced and insert the new component 4 Ensure that the appropriate adhesive label with the date of calibrat...

Страница 20: ...WM281 291 User s Manual Michell Instruments 13 appendix a Appendix A Technical Specifications...

Страница 21: ...485 Supply Voltage 15 27 V AC and 18 38 V DC Load Resistance Current output R 500 Power Consumption 1 7 W maximum CE Conformity 2004 108 EC Operating Specifications Operating Temperature Probe Housing...

Страница 22: ...WM281 291 User s Manual Michell Instruments 15 appendix B Appendix B Modbus Holding Register Map...

Страница 23: ...int Calibration R W 999 999 0 2 C Get Set Single Point Calibration offset for Temperature input 24 Digital Temperature Filter R W 0 0 20 0 0 8 1 Seconds Get Set Digital Filter value for Temperature in...

Страница 24: ...lue of Analog output for Humidity 159 RESERVED R 0 0 160 Type of Analog output for Calculated Variable R W 0 130 1 0 Get Set Analog output type for Calculated Variable 0 0 20mA 1 4 20mA 128 0 1V 129 0...

Страница 25: ...it 30 C 31 F 401 403 RESERVED R 0 0 406 419 RESERVED R 0 0 420 Calculated Variable Type R W 0 5 0 0 Get Set Calculation Type 0 Dew Point 1 Mixing Ratio 2 Absolute Humidity 3 Enthalpy 4 Frost Point 421...

Страница 26: ...WM281 291 User s Manual Michell Instruments 19 appendix C Appendix C Digicor2 280 290 Communications Kit optional...

Страница 27: ...following files Digicor2 280 290 configuration software USB to RS485 convertor drivers USB to RS485 convertor hardware USB to RS485 convertor hardware connection instructions The connection details ar...

Страница 28: ...WM281 291 User s Manual Michell Instruments 21 appendix D Appendix D EC Declaration of Conformity...

Страница 29: ...WM281 291 User s Manual 22 97463 Issue 1 July 2014 appendix D Appendix D EC Declaration of Conformity...

Страница 30: ...WM281 291 User s Manual Michell Instruments 23 appendix E Appendix E Quality Recycling Warranty Information...

Страница 31: ...ich may be harmful to the environment Similarly we are increasingly using recyclable and or recycled material in our business and products wherever it is practical to do so To protect natural resource...

Страница 32: ...ctive 2011 65 EU Article 3 24 defines Control and Monitoring Equipment specifically as monitoring and control instruments designed exclusively for industrial or professional use RoHS2 EU Directive 201...

Страница 33: ...tains a hazardous material register in which MSDS data sheets are collated and we will check that our suppliers will comply to REACH requirements for all materials and substances we use in the process...

Страница 34: ...s of action will be taken If the fault is covered under the terms of the warranty the instrument will be repaired at no cost to the owner and returned If Michell Instruments determines that the fault...

Страница 35: ...WM281 291 User s Manual 28 97463 Issue 1 July 2014 appendix F Appendix F Recommended Practices in Humidity Measurements...

Страница 36: ...his may require from only a few minutes to many hours Follow Michell Instruments care instructions for the instrument Some instruments need routine cleaning or other maintenance Before using any solve...

Страница 37: ...t must be avoided These can result in overestimates of the humidity of the air between the droplets Such results may exceed 100 RH or may be impossible to interpret meaningfully Droplets of liquid als...

Страница 38: ...low humidity anything much below a dew point of 0 C the amounts of water given off by organic and porous materials can dramatically affect the value of humidity The lower the level of moisture the mor...

Страница 39: ...ilters and saturation guarding may protect the sensor but these actions carry a risk of damage by condensation or other contamination Protective filters can slow the response time of sensors This can...

Страница 40: ...WM281 291 User s Manual Michell Instruments 33 appendix G Appendix G Return Document Decontamination Declaration...

Страница 41: ...ls 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 meth...

Страница 42: ...http www michell com...

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