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.
_________________________________________________________________________________ Table of Contents CHAPTER 1 GENERAL INFORMATION ............................................................................3 Safety .........................................................................................3 Version Information..................................................................3 Warranty ....................................................................................
User's Guide _______________________________________________________________________ CHAPTER 6 COLLECTING DATA ................................................................................... 21 Data collecting modes........................................................... 21 Entering the data collecting modes..................................... 21 Automatic data collecting mode REC AUTO .......................... 22 Setting the measurement duration......................................
Chapter 1 _________________________________________________________ General Information CHAPTER 1 GENERAL INFORMATION Safety Throughout the manual, important safety considerations are highlighted as follows: WARNING Warning alerts you to a serious hazard. If you do not read and follow instructions very carefully at this point, there is a risk of injury or even death. CAUTION Caution warns you of a potential hazard.
User's Guide _______________________________________________________________________ Warranty Vaisala hereby represents and warrants all Products manufactured by Vaisala and sold hereunder to be free from defects in workmanship or material during a period of twelve (12) months from the date of delivery save for products for which a special warranty is given.
Chapter 2 _________________________________________________________ Product description CHAPTER 2 PRODUCT DESCRIPTION The HM44 set is a practical tool for humidity measurements of concrete or other structures. The accuracy and reliability performance of the HMP44 probe comes from advanced Vaisala HUMICAP© 180 sensor.
User's Guide _______________________________________________________________________ CHAPTER 3 TO BE NOTED WHEN MEASURING HUMIDITY Temperature of the probe and the concrete shall be the same! In humidity measurement and especially in calibration it is essential that temperature of the probe and measured object is the same. Even a small difference in temperature between the measured object and the probe causes an error.
Chapter 4 _____________________________________________________________ Taken into use CHAPTER 4 TAKEN INTO USE Before taking into use the HM44 do the following: - place the batteries into HMI indicator connect the probe feed the individual probe adjustment coefficients if needed, check and change the settings The basic display appears when turning the device on: RH % T °C Relative humidity Temperature Currently selected probe Feeding the individual adjustment coefficients Each probe has an indivi
User's Guide _______________________________________________________________________ Numbering the probes The first number of the second line of display indicates the currently selected probe (1-10). Connect a probe and change the number on the display by pressing ENTER and simultaneously buttons ▲ or ▼. Remember to write the probe number (1-10) in the product label to be able to identify the probes. Feeding the offset correction 1.
Chapter 4 _____________________________________________________________ Taken into use 5. When the reading is correct, press ENTER and the display changes to show the humidity and temperature readings.
User's Guide _______________________________________________________________________ Display units °C set • Select the display units with buttons ▲ or ▼. Choose 0 for metric units or 1 for non- metric units (see Table 1). • Press ENTER and the display changes to show the setting of the automatic power-off function. Table 1.
Chapter 4 _____________________________________________________________ Taken into use Selecting the display quantities set The HMI41 displays relative humidity (RH), temperature (T) and dewpoint temperature (Td) readings. Additionally, one of the following quantities can be chosen: absolute humidity (a), wet bulb temperature (Tw) and mixing ratio (x).
User's Guide _______________________________________________________________________ Setting the probe type In cases where an indicator (or a probe) is without an ID-marking, the following probe numbers have to be selected: Probe Probe setting HMP41 HMP42 HMP44 HMP45 HMP46 1 2 1...10 1 2 • change the setting with buttons ▲ and ▼ With the probe HMP44 there is no need to change the setting. • press ENTER; the display now changes to show the text START.
Chapter 5 ____________________________________________ Humidity measurements in concrete CHAPTER 5 HUMIDITY MEASUREMENTS IN CONCRETE General about humidity measurements in a drilled hole The HMP44 probe measures humidity of concrete in a drilled hole. In equilibrium stage, the humidity of a concrete and air humidity in a drilled hole become same. Drilling changes the stage of the concrete. This is due to the fact that heat is formed during drilling.
User's Guide _______________________________________________________________________ slab until it corresponds to readings measured at the depth of approximately 20% of the slab. In concrete slabs drying in one direction only, the humidity is highest at the bottom. After coating, the humidity spreads evenly throughout the slab until it corresponds to readings measured at the depth of approximately 40% of the slab.
Chapter 5 ____________________________________________ Humidity measurements in concrete Maximum humidity levels for coating SisäRYL 2000 Code of Building Practice (RT 14-10668, 2000, ISBN 951-682-506-0) recommends the following maximum humidity levels (at +20°C) for coating of various materials : Wooden floor coverings Maximum RH (%) Coating Wooden parquet boards without moisture barrier (plastic film) between wood and concrete. Enlaid wooden floor coverings.
User's Guide _______________________________________________________________________ Preparations for the measurements The holes shall be drilled 3 days before the measurements. A plastic sleeve and an installation cover are placed to the hole immediately after drilling. A probe can be placed to the plastic sleeve immediately after drilling or before measurements. Follow the instructions below. 1. 2.
Chapter 5 ____________________________________________ Humidity measurements in concrete 4. Insert the probe into the sleeve by feeding it in with the cable until it touches the bottom. Close a rubber plug around the cable and seal the sleeve with it: Figure 5.3 Sealing the sleeve with a plastic plug 5. Fold the cable in the installation cover and close the lid. Leave the probe to stabilize before starting the measurements.
User's Guide _______________________________________________________________________ Figure 5.5 Close the cable lead-through of the rubber plug However, we recommend that you leave the probe into the sleeve as this ensures the best possible reliability of the readings. When the concrete is dry enough and measurements are no longer necessary, pull the probe out with the installation cover and the sleeve.
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.
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 °C max The indicator returns to the normal display mode with any button except ON/OFF.
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.
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. 30 minutes or 3 days. When entering this mode, previously set duration time appears on the display.
Chapter 6 _____________________________________________________________ Collecting data Setting the measurement interval min (previously set interval) In this mode, you can set the time between two measurements stored, e.g. 5 minutes or 2 hours. When entering this mode, previously set interval appears on the display. If the previously set measurement interval is too short for the current memory capacity of the indicator, the shortest calculated measurement interval appears instead.
User's Guide _______________________________________________________________________ Manual data collecting REC CATCH Enter the REC CATCH mode, see page 21. Press ENTER and a text similar to the following appears: RH % T set °C The probe is now taking measurements and you can store the readings at appropriate intervals by pressing the button HOLD.
Chapter 6 _____________________________________________________________ Collecting data Reading the measurement results REC READ Enter the REC READ mode as instructed on page 21. Press ENTER, and a text similar to the following appears on the display: RH % T °C Numbers on the first line indicate the reading of the quantity in question (in this example, RH). The number on the left on the second line (in this example number 0.) is the sequence number of the measurement.
User's Guide _______________________________________________________________________ RH % T °C Press HOLD while the arrow is displayed to scroll the measurement results (note that the sequence number changes): RH % T °C HOLD: RH % T °C etc. If the button HOLD is pressed continuously, numbers change in a faster rate.
Chapter 6 _____________________________________________________________ Collecting data Examples: RH % RH % T °C ENTER T °C Hi min returns automatically (minimum reading of the 1st line quantity) min Hi (decimals of the 2nd line) HOLD RH % T °C RH % T °C ENTER max Hi returns automatically Hi max (maximum reading of the 1st line quantity) (decimals of the 2nd line) HOLD RH % T °C RH % T °C ENTER min Lo Returns automatically min Lo (minimum reading of the 2nd line q
User's Guide _______________________________________________________________________ CHAPTER 7 TRANSFERRING DATA TO A PC The readings that have been stored in the HMI41 memory manually or automatically in the data collecting mode, can be transferred to a computer and then printed if desired. In order to do this, connect a serial connection cable (order code 19446ZZ) to the appropriate connectors on your PC and in the HMI41: connect the serial cable to the EXT connector Figure 7.
Chapter 7 _____________________________________________________ Transferring data to a pc Giving the communication parameters Give the communication parameters when using this terminal session for the first time; save them for future use. See instructions in the following tables. Table 7.1 Giving parameters in Windows 3.1 MENU DESCRIPTION PROGRAM MANAGER ò ACCESSORIES ò double click TERMINAL ò Settings ò double click Communications ò File ò Save as click click and select parameters (see figure 7.
User's Guide _______________________________________________________________________ Table 7.2 Giving parameters in Windows 95/98 and Windows NT WINDOWS 95 MENU Start ò Programs ò Accessories ò WHAT TO DO move the cursor to: move the cursor to: move the cursor to: HyperTerminal ò click Hyperterminal ò double click Connection Description move the cursor to: type the name of the connection (e.g. HMI41) in the appropriate field and select an icon if available; click OK.
Chapter 7 _____________________________________________________ Transferring data to a pc Figure 7.3. Communication parameter selection window.
User's Guide _______________________________________________________________________ Transferring the data When you have given the communication parameters, you can start transferring the data from the HMI41. Note that communication parameters can be stored in the computer for future use. To start transferring the data, make sure that the HMI41 is connected to a serial port of your computer and that the terminal session is open. Turn the HMI41 on with the ON/OFF button.
Chapter 7 _____________________________________________________ Transferring data to a pc If you know the starting time of the automatic data collecting, you can enter it with the command and get an output showing the actual time of measurement. For example: >play 15:05 Reading Log... OK data 0 1 2 3 4 5 6 7 > hh:mm:ss 15:05:00 15:06:00 15:07:00 15:08:00 15:09:00 15:10:00 15:11:00 15:12:00 RH 8.52 9.58 9.60 9.61 9.65 11.22 9.93 9.92 T 23.69 23.66 23.50 23.30 23.25 23.41 23.30 23.22 Td -11.70 -10.
User's Guide _______________________________________________________________________ >help play Command : PLAY Purpose : Send recordings from memory to serial port Usage : PLAY hh:mm , hh:mm = rec starting time (optional) if command is used without parameters it uses default setting > ? Outputting the HMI41 settings If you need to know which parameters and settings are currently stored in your HMI41 indicator, type ? and press ENTER: >? HMI41 / 2.
Chapter 8 ________________________________________________________________ Calibration CHAPTER 8 CALIBRATION Calibration interval The HMP44 probes are calibrated at the factory. A new probe should be calibrated first time 6 months from implementation, after that annually. In case the adjustment is needed, contact Vaisala SSD Service or local Vaisala representative (see Chapter 9, Maintenance).
User's Guide _______________________________________________________________________ After a few seconds, the text changes automatically to show the following: °C set Press ENTER repeatedly until the following appears: set This indicates that no calibration has been selected. In addition to this, there are five calibration types available. Select the desired type with buttons ▲ or ▼. All selections are acknowledged with ENTER. In the table below, you can find a summary of all the calibration options.
Chapter 8 ________________________________________________________________ Calibration Two-point humidity calibration In two-point humidity calibration, two accurate references (e.g. the HMK15 Calibrator) are needed. Leave the reference instrument and the probe at the calibration site for at least 1 hour so that the probe temperature stabilizes to the room temperature. Start the calibration by inserting the probe to the lower reference humidity.
User's Guide _______________________________________________________________________ lower point calibration. A message similar to the following appears with the first line blinking: RH % set The blinking number indicates the value of the higher humidity reference stored in the HMI41 memory. Insert the probe to the higher reference humidity.
Chapter 9 _______________________________________________________________Maintenance CHAPTER 9 MAINTENANCE Replacing the HUMICAP180 sensor Remove damaged sensor and insert a new one. Handle the sensor from the plastic frame; do not touch the sensor plate. Calibrate the probe (with a new sensor) with the calibrator HMK15. The probe can be sent to Vaisala service for sensor change.
User's Guide _______________________________________________________________________ CHAPTER 10 TROUBLESHOOTING Erroneous readings If any of the following points is neglected, the readings may result erroneous.
Chapter 10 ___________________________________________________________ Troubleshooting In the following, a short list for trouble shooting: PROBLEM: the display is blank the display is dim readings seem to be wrong you have accidentally changed some settings WHAT TO DO: • check the batteries • if the batteries are in order, contact Vaisala or a Vaisala representative • during automatic data collecting, the display is dim except when the readings are updated (once a minute) • let the probe stabilize (see
User's Guide _______________________________________________________________________ CHAPTER 11 SPARE PARTS AND ACCESSORIES Order code HMP41 HMP42 HMP44 HMP44L HMP45 HMP46 HMI41 HUMICAP 180 17039HM 19266HM 19267HM 19268HM HM26849 HM36736 HM27104 19446ZZ 19116ZZ 19164ZZ 19165ZZ HMK15 Description RH & T probe; for fixed mounting RH & T probe; for tight spaces RH & T probe with 0.3 m cable RH & T probe with 2.
Chapter 11 _________________________________________________ spare parts and accessories Optional probes • HMP41 probe for measuring humidity and temperature in various applications, for example in spot checks. • HMP42 probe head has a diameter of only 4 mm and is 23.5 cm long. This probe structure is specially for measurements in very tight places, e.g. in joint spaces between tiles or in air conditioning channels as well as for measuring the equilibrium humidity of e.g.
User's Guide _______________________________________________________________________ CHAPTER 12 TECHNICAL DATA HMP44 probe Humidity Measurement range Accuracy at +20°C: 0...100 %RH non-condensing ±2 %RH (0...90%RH) ±3 %RH (90...100%RH) Temperature dependence: %RH 1.5 1.0 0.5 0 -0.5 -1.0 -1.
Chapter 12 ____________________________________________________________ Technical data °C 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 -20 -10 0 10 20 30 40 50 60 °C Temperature sensor Pt1000 IEC 751 Class B Cable length: HMP44 HMP44L Probe diameter Probe length 0.3 m 2.7 m 12 mm 69 mm Operating temperature range of electronics Housing material Housing classification Sensor protection -40...
User's Guide _______________________________________________________________________ Battery operation time Operating humidity range Operating temperature Storage temperature Display Housing material Housing classification 72 h continuous use 0...100 %RH non-condensing -20...+60 °C -40...+70 °C two line LCD ABS plastic IP 53 (with connectors blocked) Connector type Weight (incl.
Chapter 12 ____________________________________________________________ Technical data APPENDIX 1: Example of a calibration certificate.
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