User manual VAISALA HM44

[. . . ] USER'S GUIDE Vaisala HUMICAP® Set for Measuring Humidity in Concrete HM44 M010068EN-A PUBLISHED BY Vaisala Oyj P. O. Box 26 FIN-00421 Helsinki Finland Phone (int. ): +358 9 8949 1 Fax: +358 9 8949 2227 Visit our Internet pages at http://www. vaisala. com/ © Vaisala 2006 No part of this manual may be reproduced in any form or by any means, electronic or mechanical (including photocopying), nor may its contents be communicated to a third party without prior written permission of the copyright holder. The contents are subject to change without prior notice. Please observe that this manual does not create any legally binding obligations for Vaisala towards the customer or end user. All legally binding commitments and agreements are included exclusively in the applicable supply contract or Conditions of Sale. _________________________________________________________________________________ Table of Contents CHAPTER 1 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Version Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 CHAPTER 2 PRODUCT DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 CHAPTER 3 TO BE NOTED WHEN MEASURING HUMIDITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 CHAPTER 4 TAKEN INTO USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Feeding the individual adjustment coefficients . . . . . . . . . . . . . . . . . . . . 7 Numbering the probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Feeding the offset correction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Feeding the gain correction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Changing the settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Enter the setup menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Display units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Setting the automatic power-off function. . . . . . . . . . . . . . . . . . . . . . . . 10 Selecting the display quantities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Setting the pressure for mixing ratio and wet bulb temperature calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Setting the probe type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Select the function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 CHAPTER 5 HUMIDITY MEASUREMENTS IN CONCRETE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 General about humidity measurements in a drilled hole . . . 13 Measurement depth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Maximum humidity levels for coating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Preparations for the measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Starting the measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Measurement readings on display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 HOLD-mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 MIN and MAX modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 VAISALA ___________________________________________________________________ 1 User's Guide _______________________________________________________________________ CHAPTER 6 COLLECTING DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The first number on the second line (here 1) indicates the currently selected probe (1-10). If the individual adjustment coefficients have been entered in the HMI41 memory, make sure that this number corresponds to that marked on the product label. If necessary, change the number on the display: press ENTER and simultaneously the button L (number up) or the button M (number down). When the probe number is correct, release the buttons. The readings measured by the probe appear on the display. When the measurements have been taken, turn the HMI41 off and disconnect the cable. Fold the probe cable in the installation cover and close the lid carefully. If you do not wish to leave the probe into the sleeve, close the sleeve with the rubber plug. _________________________________________________________________________________ 18 Chapter 5 ____________________________________________ Humidity measurements in concrete Measurement readings on display Relative humidity and temperature readings appear automatically after the battery charge indication. Other readings (dewpoint temperature, absolute humidity, wet bulb temperature, mixing ratio) appear on the display by pressing the button MODE. If it is pressed once, dewpoint temperature (Td) reading is displayed, and further pressings bring one of the other quantities on the display. HOLD-mode Press the HOLD button to freeze the display to show the current readings: RH T hold % °C The normal display mode returns with buttons MODE or ENTER. If the indicator turns itself off with the automatic power-off function during the HOLD mode, it wakes up in the same mode when turned on again. The text `hold' is blinking and the indicator can be returned to the normal display mode with any button except ON/OFF. MIN and MAX modes Press the button HOLD again when the indicator is in the HOLD mode, the minimum readings measured after power-up appear (if the text `hold' is blinking, the HMI41 must first be returned to the normal display mode, see previous section): RH T min % °C The indicator returns to the normal display mode with buttons MODE or ENTER. VAISALA __________________________________________________________________________ 19 User's Guide _______________________________________________________________________ If you press the button HOLD when the indicator is in the MIN mode, the maximum readings measured after power-up appear: RH T max % °C The indicator returns to the normal display mode with any button except ON/OFF. _________________________________________________________________________________ 20 Chapter 6 _____________________________________________________________ Collecting data CHAPTER 6 COLLECTING DATA The HMI41 indicator can be used for collecting the measurement data. The data is stored in the indicator's non-volatile memory; it is not lost when the indicator is turned off. Please, note also that the automatic power-off function is not active during data collecting even if previously selected. When data collecting has ended, the automatic power-off function becomes active again. Data collecting modes The following three modes are used when collecting data: REC AUTO: automatic data collecting REC CATCH: manual data collecting REC READ: reading the measurement results Entering the data collecting modes Turn the device ON (by using ON/OFF button) and immediately (within 1. . 2 seconds) after turning on press immediately the button HOLD for at least 5 seconds. The software version and the probe type indication appear for a second, after which the text REC AUTO appears on the display; then release the HOLD button. REC AUTO is the main display of the data collecting mode. With the button MODE you can enter the REC CATCH mode (manual data collecting, see page 24) and by pressing MODE again, the REC READ mode (reading the measurement results, see page 25). VAISALA __________________________________________________________________________ 21 User's Guide _______________________________________________________________________ Automatic data collecting mode REC AUTO Enter the REC AUTO mode as instructed on page 21. Setting the measurement duration Press ENTER and a text similar to the following appears on the display: bat (previously set duration) In this mode, you can set the time between the first and the last measurement stored, e. g. When entering this mode, previously set duration time appears on the display. If the previously set duration time is too long for the current battery charge, the longest calculated duration time possible appears instead. This is also indicated with the text 'MAX'. The duration of the measurement can be set from 15 minutes to 7 days. The batteries last for 7 days during data collecting provided that they are of the same type as those delivered with the indicator. [. . . ] Wait for the reading to stabilize (about 30 minutes) and press ENTER. Now the higher humidity value is corrected to the given high reference. Press ENTER again to conclude the calibration. If the calibration has been successful, the following message appears: The correction data has now been calculated and stored in the HMI41 memory. [. . . ]