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Summary of Contents for Vaisala hm40
- Page 1 User’s Guide www.vaisala.com Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter HM40 M211088EN-A...
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Page 3: Table Of Contents
User’s Guide ________________________________________________ HM40 Table of Contents First Startup..................3 Initial Settings ................3 Product Overview ................ 4 The HM40 Meter - Front ............5 The HM40 Meter – Back............. 6 Batteries................... 7 Charging................... 8 Quantities Explained ..............9 Measurement Views..............10 Screen Layout and Controls .......... - Page 4 How to Measure ................27 Maintenance .................29 Cleaning ..................29 Changing the Filter ............... 30 Changing the Probe..............31 Calibration ..................33 Calibrating the HM40 Using the HMK15 Humidity Calibrator .................. 34 Accessories and Parts...............38 HMP110 Probe................38 Filters ..................39 Chargers and Batteries............39 Belt Clips and Battery Covers..........39 Technical Data ................
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Page 5: First Startup
Replace the batteries with fresh/recharged ones if needed. Initial Settings When you power on the HM40 for the first time (or after a factory reset of the settings), you must first select the operation language. You will then be asked if... -
Page 6: Product Overview
User’s Guide ________________________________________________ HM40 Product Overview The Vaisala HUMICAP® Hand-Held Humidity and Temperature Meter HM40 is a hand-held meter for various portable measurement applications. Main features: - Compact and robust housing - Measures a wide range of quantities: RH, Td, Tw, a, x, h, T. -
Page 7: The Hm40 Meter - Front
User’s Guide ________________________________________________ HM40 The HM40 Meter - Front Filter and sensor HMP110 probe Probe holder Display Left function Right function Down Menu Power... -
Page 8: The Hm40 Meter - Back
User’s Guide ________________________________________________ HM40 The HM40 Meter – Back Belt clip Battery cover Batteries 2 x AA... -
Page 9: Batteries
User’s Guide ________________________________________________ HM40 Batteries The HM40 is powered by two AA-size batteries. You can use the following battery types: - Alkaline (IEC-LR6) - Lithium (IEC-FR6) - NiMH (IEC-HR6) Do not mix batteries of different types. Both batteries must be of the same type. -
Page 10: Charging
2. When the LED stops blinking and stays on, the batteries are charged. The charging time is several hours for two fully discharged NiMH batteries. If you are not using a Vaisala-supplied charger and rechargeable batteries, read and follow the manufacturer’s own charging instructions. -
Page 11: Quantities Explained
User’s Guide ________________________________________________ HM40 Quantities Explained The table below describes the quantities measured by the HM40. All of the quantities are measured or calculated when the meter is on, independent of what is currently displayed. Quantity Symbol Unit(s) Description Relative... -
Page 12: Measurement Views
User’s Guide ________________________________________________ HM40 Measurement Views Screen Layout and Controls Pressing the right function button holds the screen and tags the current measurement point. See Hold and Tag on page 16. -
Page 13: Indicators
User’s Guide ________________________________________________ HM40 Indicators Battery charge indicator Fresh batteries will always show three bars. When the indicator shows two bars, the voltage of the batteries has started to drop. When there is a single (blinking) bar left, you should replace the batteries. -
Page 14: Numeric View
User’s Guide ________________________________________________ HM40 Numeric View The Numeric view shows the currently values of the selected humidity quantity and temperature. In the all quantities view the font is smaller to fit all values on screen. -
Page 15: Statistics View
User’s Guide ________________________________________________ HM40 Statistics View The Statistics view shows the current value of the selected quantity, as well as the maximum, average, and minimum value since the measurement was started. There is also a counter that shows how long the measurement has been running. -
Page 16: Graph View
The graph limits and spacing adjust dynamically to show the full range of measurements. HM40 has no permanent memory for measurement data. When the meter is turned off, the graphs are cleared. - Page 17 User’s Guide ________________________________________________ HM40 The timescale of the graph can be changed in the Main menu. By default, the graph will automatically change the timescale to fit the measured data. If you select a short timescale, only the most recent data will be visible.
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Page 18: Hold And Tag
User’s Guide ________________________________________________ HM40 Hold and Tag If you press the right function button (Hold button) in a measurement view, two things happen: - The measurement view freezes until you press the Release button. - The latest measurement point is tagged (marked and stored in temporary memory). - Page 19 User’s Guide ________________________________________________ HM40 When the screen is held, the top of the display displays the current date and time. This is useful when you want to record the current data (take a photograph or write it down). If time has not been set, the top of the screen will simply read “HOLD”.
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Page 20: Main Menu
User’s Guide ________________________________________________ HM40 Main Menu You can open the menu from the measurement view at any time by pressing the menu button. If you are already in the menu, pressing the menu button returns you to the measurement view. If you are in a submenu, the menu button returns you to the previous menu level. -
Page 21: Tagged Points
If all quantities view has been selected, RH is shown instead. HM40 has no permanent memory for measurement data. When the meter is turned off, the tagged points are deleted. -
Page 22: Graph Duration
User’s Guide ________________________________________________ HM40 Graph Duration In the Graph duration screen, you can select the timescale of the Graph view. The shortest selectable timescale is 1.5 minutes, the longest 32 hours. You can also select Autoscale, which means that the timescale... -
Page 23: Calibration
User’s Guide ________________________________________________ HM40 Calibration In the Calibration submenu, you can perform an adjustment procedure that corrects the humidity and temperature measurement of the meter. For more information and the adjustment procedure, see section Calibration on page 33. Help Opens a menu with help topics on measurement, calibration, and the measured quantities. -
Page 24: Settings Submenu
User’s Guide ________________________________________________ HM40 Settings Submenu Language In the Language screen, you can change the display language of the meter. The choices are: - English (en) - German (de) - French (fr) - Finnish (fi) - Spanish (es) - Swedish (sv) -
Page 25: Units
User’s Guide ________________________________________________ HM40 Units The Units setting determines the measurement system that is used for the quantities: - Metric - Non-metric The Pressure unit is set separately: - hPa - bar - atm - PSI Time & Date In the Time & Date menu, you can set the current date and time, and their presentation formats. - Page 26 User’s Guide ________________________________________________ HM40 In the Date setup screen, you can set the current date: - Arrow buttons change the selected value - Left function button selects the next value (year, month, or day). - OK button stores the date and returns to the Settings menu.
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Page 27: Pressure
1.0132 bar (due to high altitude, for example), set the correct pressure value so that the HM40 meter can calculate the measurement correctly. Backlight Always on: Screen is always lit. This option will shorten the battery life significantly. -
Page 28: Battery
User’s Guide ________________________________________________ HM40 Battery Use the Battery setting to tell the meter what kind of batteries are installed. This will help to scale the battery indicator correctly. The options are: - Alkaline - Rechargeable Navigation The Navigation setting affects the behavior of arrow... -
Page 29: How To Measure
User’s Guide ________________________________________________ HM40 How to Measure Remove the Transport Protection Cap Remove the yellow transport protection cap from the probe when taking the meter into use. Measure in a Stable Environment If the measurement conditions are changing, you cannot get a reliable measurement result. Do not measure near heat sources, air conditioning, open doors, or windows. - Page 30 Calibrate the Meter Regularly It is recommended that you calibrate the HMP110 probe of the HM40 meter once a year, or if you have any reason to believe it is no longer within its accuracy specification. See section Calibration on page 33.
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Page 31: Maintenance
User’s Guide ________________________________________________ HM40 Maintenance Cleaning The HM40 can be cleaned by wiping it with a moist cloth. If the filter becomes contaminated, it is very likely to affect the humidity measurement since residue on the filter will retain some moisture. Dirty filters should be replaced. -
Page 32: Changing The Filter
User’s Guide ________________________________________________ HM40 Changing the Filter 1. Twist the filter counter- clockwise to open it. 2. Turn the filter until it can be removed. Do not touch the sensors when pulling it away. 3. Install the new filter and... -
Page 33: Changing The Probe
User’s Guide ________________________________________________ HM40 Changing the Probe 1. Press the power button to turn off the meter. 2. Twist the probe holder counter-clockwise to disconnect the probe. 3. Pull the probe holder and probe together away from the connector. - Page 34 User’s Guide ________________________________________________ HM40 4. Take the HM40 meter and push the pins of the new probe in the holes of the connector. Tighten the probe holder. 5. Press the power button to turn on the meter. It should start up and begin...
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Page 35: Calibration
You can do this yourself using a humidity reference (for example, the Vaisala Humidity Calibrator HMK15), or send the probe to a Vaisala Service Center for calibration. See the back cover of this manual for contact information. -
Page 36: Calibrating The Hm40 Using The Hmk15 Humidity Calibrator
User’s Guide ________________________________________________ HM40 Calibrating the HM40 Using the HMK15 Humidity Calibrator The HMK15 Humidity calibrator allows you to produce known humidity environments using saturated salt solutions. Performing a good calibration takes some time and preparation. Read the HMK15 User’s Guide before performing your first calibration with the HMK15. - Page 37 User’s Guide ________________________________________________ HM40 3. Select the number of calibration points at menu item [2] Points. You can perform a 1-point or 2- point calibration. For 2-point calibration, you need two reference environments. For example, LiCl and NaCl salt chambers provide 11% and 75% relative humidity references.
- Page 38 User’s Guide ________________________________________________ HM40 The correction to the measurement at point 1 is now shown in the text for menu item [3]. If you are only doing a 1- point calibration, skip to step 8. 6. Place the probe in the second reference environment (second calibration point).
- Page 39 User’s Guide ________________________________________________ HM40 The correction to the measurement at point 2 is now shown in the text for the menu item [4]. 8. Select menu item [5] Note to edit the calibration info text that is stored in the probe. Edit the text using the select button and arrow keys.
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Page 40: Accessories And Parts
225688SP HMP110 Probe If the HMP110 probe on your meter needs to be replaced, you can order a new probe from Vaisala. You can: - order a new HMP110 probe and keep your current one - order a new HMP110R probe and return the old one to Vaisala (replacement probe). -
Page 41: Filters
User’s Guide ________________________________________________ HM40 Filters Vaisala offers two types of filters for HMP110 for use with the HM40: - Plastic grid filter is the standard choice. It provides the fastest response time, as air can flow freely around the sensors. -
Page 42: Technical Data
User’s Guide ________________________________________________ HM40 Technical Data Performance Relative Humidity Measurement range 0 ... 100 %RH Accuracy (including non-linearity, hysteresis, and repeatability) at 0 ... +40 °C (+32 ... +104 °F) ±1.7 %RH (0 ... 90 %RH) ±2.5 %RH (90 ... 100 %RH) at -10 ... -
Page 43: Mechanical
User’s Guide ________________________________________________ HM40 Mechanical Dimensions (H × W × D) 230 × 72 × 44 mm Weight With batteries 240 g Without batteries 190 g Materials Meter body PC/ABS blend, acrylic display lens Probe holder Aluminum Probe Chrome coated aluminum... -
Page 44: Dimensions (In Mm)
User’s Guide ________________________________________________ HM40 Dimensions (in mm) - Page 46 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.