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Table of Contents
Summary of Contents for isweek M1 Series
- Page 1 M1 Series humidity temperature transmitters INSTRUCTION MANUAL...
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Page 2: Table Of Contents
Appendix 1: Practical Advice for Measuring Humidity..............15 Appendix 2: Calibration........................ 15 Appendix 3: Accessories for the M1 Series ................... 15 PLEASE, READ THIS FIRST • Check the product for any physical damage that may have occurred during shipment. We carefully pack and routinely insure all shipments. -
Page 3: Overview
The M1 series are humidity and temperature transmitters suitable for cost sensitive applications where conditions are within the range of 0 to 100 %RH and -30 to 70°C (-22 to 158°F). The M1 series measures both humidity and temperature and can also be used to measure either humidity or temperature only. -
Page 4: Operation
Operating range and limits The M1 series can operate within 0 to 99 %RH non condensing and -40 to 60°C (-40 to 140°F) at the probe and electronics. The useful application range of the M1 series is 0 to 100%RH and -30 to 70°C (-22 to 158°F) at the probe. -
Page 5: Temperature Compensation Of The Humidity Sensor
The M1 series uses the temperature data from the Pt100 RTD to provide automatic compensation for the effect of temperature on the humidity sensor. The temperature compensation uses normal room temperature as a reference. Because of this, calibration of the M1 series is always done at normal room temperature. -
Page 6: Installation And Wiring Of The Base Plate
______________________________________________________________________________ d) Immerse as much of the probe as possible in the environment to be measured. e) Prevent the accumulation of condensation water at the level of the sensor leads. Install the probe so that the probe tip is looking downward. If this is not possible, install the probe horizontally. Installation and wiring of the base plate The base plate should be installed first, using screws with an approximate diameter of 5/32". - Page 7 ______________________________________________________________________________ Note: it is not necessary to connect both terminals 1 and 3 to the plus side of the power supply. The transmitter will operate normally with just one of these terminals connected. __________________________________________________________________________________ in_m1.doc...
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Page 8: Measuring Humidity Or Temperature Only
______________________________________________________________________________ M13: 3-wire Voltage Outputs DC + Phase Common (GND) Not Used Current Outputs Base Plate Terminals Description 10…35 VDC (+) or 24 VAC common (-) Temperature (+) / Output 2 Humidity (+) / Output 1 5 (+) and 6 (-) Not Used 1) We generally recommend grounding, especially if the electronics will be subjected to a low humidity environment (35 %RH or less). -
Page 9: Installation Of The Electronics Module
-10- ______________________________________________________________________________ M13 (3-wire): the humidity and temperature circuits are independent one from the other. Any output can be operated without closing the loop for the other output. Installation of the electronics module Once the base plate has been installed and wired, the electronics module can be inserted and secured with the screws provided. - Page 10 -11- ______________________________________________________________________________ For routine calibration checks, the probe should be verified at one or two values of humidity. For more details, see service connector, service cable and appendix 2 - calibration __________________________________________________________________________________ in_m1.doc...
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Page 11: Service Connector
______________________________________________________________________________ Service connector Transmitters of the M1 series feature a keyed 10-pin service connector. This service connector can be used to connect M1 transmitter to probe input 1 of the HygroPalm 3 indicator with a service cable. For details, see service cable. -
Page 12: Service Cable
-13- ______________________________________________________________________________ Service cable Service cable ACRLXB5 is used to connect the service connector of the M1 to probe input 2 of the HygroPalm 3 portable indicator. The ACRLXB5 service cable allows to do any of the following: a) Display locally the signals of the M1 transmitter with the HygroPalm 3. This makes it possible to validate the entire measuring loop: probe, transmitter, wiring and central processing unit. -
Page 13: Specifications
-14- ______________________________________________________________________________ Specifications Humidity sensor Rotronic Hygromer™ C94 thin film capacitive Temperature sensor Pt100 RTD Circuit type 2-wire, loop powered 3-wire Output signal type 4-20 mA, loop powered 0…1/5/10 V / 0/4…20 mA Operating limits at probe 0…100%RH and -40…60°C (-40…140°F) Operating limits at transmitter 0...99%RH non condensing -40...60°C (-40...140°F) -
Page 14: Appendix 1: Practical Advice For Measuring Humidity
Detailed calibration instructions are provided separately in the HygroPalm manual. Follow the same procedure as you would to calibrate a probe attached to the HygroPalm. Note that the M1 transmitter must be powered up during calibration. Appendix 3: Accessories for the M1 Series Order Code Description... - Page 15 -16- ______________________________________________________________________________ ER-15 calibration device for the M1 series transmitters __________________________________________________________________________________ in_m1.doc...
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