background image

MDM25 User’s Manual

vi

 

 

 

97234 Issue 4, January 2018

Safety

The manufacturer has designed this equipment to be safe when operated using the procedures 

detailed in this manual. The user must not use this equipment for any other purpose than that 

stated. Do not apply values greater than the maximum value stated.

This manual contains operating and safety instructions, which must be followed to ensure the safe 

operation and to maintain the equipment in a safe condition. The safety instructions are either 

warnings or cautions issued to protect the user and the equipment from injury or damage. Use 

competent personnel using good engineering practice for all procedures in this manual. 

Electrical Safety

The instrument is designed to be completely safe when used with options and accessories supplied 

by the manufacturer for use with the instrument. 

Pressure Safety

This product is not suitable for use at pressures greater than atmospheric.

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 come into contact with any hazardous substance 

which might be employed in the construction of the instrument. Care should, however, be exercised 

during maintenance and the disposal of certain parts. 

Repair and Maintenance

The instrument must be maintained either by the manufacturer or an accredited service agent. Refer 

to www.michell.com for details of Michell Instruments’ worldwide of

fi

 ces contact information. 

Calibration

An annual calibration is recommended for the RH probe.  This should be returned to the manufacturer, 

Michell Instruments, or one of their accredited service agents for re-calibration. 

Safety Conformity

This product meets the essential protection requirements of the relevant EU directives. 

Содержание MDM25

Страница 1: ...MDM25 Hygrometer User s Manual RH Ta Abs H 53 1 21 0 C 9 7g M 3 MDM25 Hygrometer 97234 Issue 4 January 2018...

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

Страница 3: ...Ltd and may 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...

Страница 4: ...ment Display 3 1 2 Display Units 4 1 3 Display Settings 4 1 4 Device Settings 4 1 5 About 4 2 INSTALLATION 5 2 1 Unpacking the Instrument 5 2 2 MDM25 Accessories 5 2 3 Battery Requirements 6 2 3 1 Fit...

Страница 5: ...ndix C Analyzer Return Document Decontamination Declaration 18 Figures Figure 1 Controls and Indicators 2 Figure 2 Display 3 Figure 3 Battery Compartment Location 6 Figure 4 Probe Connections 7 Figure...

Страница 6: ...anufacturer for use with the instrument Pressure Safety This product is not suitable for use at pressures greater than atmospheric Toxic Materials The use of hazardous materials in the construction of...

Страница 7: ...llimeters oz ounce RH relative humidity sec second s T temperature Ta ambient temperature Td dew point Tw wet bulb temperature V Volts percentage Warnings The following general warnings listed below a...

Страница 8: ...ions The hygrometer is contained within a molded ABS housing with a rubber surround for drop protection sealed to IP54 standards The rubber surround allows for comfortable hand held operation and safe...

Страница 9: ...25 hygrometer are located on the front panel The probe connection to the MDM25 hygrometer is made to the top panel and the battery charger cover is located on the rear of the instrument Figure 1 shows...

Страница 10: ...attery Charge Indicator Icon displays 3 dots when full When battery icon is empty replace the batteries 2 RH Display 3 Temperature Display 4 3rd Output Display presents the selected 3rd output either...

Страница 11: ...w or condensation forms on cooling a gas This is therefore the temperature at which air becomes saturated in equilibrium with water Absolute Humidity Abs H g m3 The mass of water vapor present in unit...

Страница 12: ...al 2 2 MDM25 Accessories Filters and Protection Caps For 12mm probe For 19mm probe Slotted protection cap black Slotted protection cap black Mesh filter Mesh filter Flat SS sintered dust filter Flat S...

Страница 13: ...high energy density and long shelf life Do not mix different type of batteries All three batteries must be of the same type 2 3 1 Fitting the Batteries Unscrew the battery compartment and insert the...

Страница 14: ...directly into the connector on the top of the MDM25 Align the locating peg with the locating notch and then rotate the knurled thumb wheel until the probe is securely held in place Locating Peg Locat...

Страница 15: ...temperature Ta If using the MDM25 alongside the S503 RH calibrator adjust the display orientation to allow for the product to be read correctly when upside down If there is there is no reading on the...

Страница 16: ...5 bright DISPLAY ORIENTATION Press Press Press Press Special feature The display turns automatically when hand meter is positioned upside down To store these settings in the memory press the Menu but...

Страница 17: ...0 Steps of 5 mins from 10 to 20 AUTO OFF disabled TEMP UNITS By pressing the Up and Down Keys temperature units can be selected as either Celcius or Fahrenheit 3RD VALUE By pressing the Up and Down Ke...

Страница 18: ...ON 3 2 3 About ABOUT FIRMWARE VERSION View the firmware version and serial number of the hand meter This number relates to the hand held unit ONLY not the attached probe Press Press Press the Menu but...

Страница 19: ...mage Care should be taken to avoid mechanical shock impact or thermal shock sudden temperature changes 4 1 Probe Calibration Salt solutions are commonly used for the calibration of RH sensors Michell...

Страница 20: ...MDM25 User s Manual Michell Instruments 13 APPENDIX A Appendix A Technical Specifications...

Страница 21: ...al Connections M9 5 way binder connector PROBES Performance Measurement Range RH 0 100 RH Accuracy at 25 C 77 F Temperature 0 2 C 0 36 F Stability RH Sensor 1 RH year Response time RH Sensor 10 sec ty...

Страница 22: ...MDM25 User s Manual Michell Instruments 15 APPENDIX B Appendix B Quality Recycling Warranty Information...

Страница 23: ...ectives 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 FC...

Страница 24: ...MDM25 User s Manual Michell Instruments 17 APPENDIX C Appendix C Analyzer Return Document Decontamination Declaration...

Страница 25: ...s chemicals 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...

Страница 26: ......

Страница 27: ...use EMC requirements Group 1 Class B equipment emissions and Portable Equipment immunity and has been designed to be in conformance with the relevant sections of the following standards or other norma...

Страница 28: ...http www michell com...

Отзывы: