Draper 12444 Bedienungsanleitung
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• Use this product ONLY as instructed in this manual.
• DO NOT attempt to open, dismantle or modify this
product in any way.
• Before every use, inspect the device for missing,
broken, loose or corroded parts and battery leakage.
−DO NOT use this product if it is damaged in any
way; contact Draper Tools to discuss repair and
replacement options.
− If battery acid comes into contact with your skin,
wash it o immediately with plenty of clean water.
− If battery acid comes into contact with your eyes,
ush them with plenty of clean water and seek
immediate medical attention.
• DO NOT expose this product to liquids or wet
environments.
EN
Original Instructions
Version 1 – June 2023
12444
DIGITAL
HYGROMETER
2. Specication
Stock No. 12444
Part No. 180-DH-1
Measurement ranges Range Resolution Accuracy
Relative humidity 0–100%RH 0.1 ±3.0% RH (45–75% RH) / ±4.5% RH (others)
Temperature (°C) -20 to +70°C 0.1 ±1.0°C
Temperature (°F) -4 to +158°F 0.1 ±1.8°F
Dew point temp. As temps. 0.1 ±1.5°C / ±2.7°F*
Wet bulb temp. As temps. 0.1 ±1.5°C / ±2.7°F
Operating time up to 50 hours
Batteries 3 × 1.5V AAA (not supplied)
Permissible ambient conditions Temperature Humidity
Operation -20 to +60°C (-4 to +140°F) 10–90% RH
Storage -20 to +60°C (-4 to +140°F) 10–75% RH
Dimensions W 56 × H 168 × D 30.5mm
Weight (with batteries) 125g
*Accuracy is based on ambient conditions of 25°C, 40–100% RH.
3. Health and Safety Information
Important: Read all the Health and Safety instructions before attempting to use this product.
Read this manual in full before using this product and retain it for future use. Always use the latest version of the manual.
Please visit for the latest version.drapertools.com/manuals
1. Intended Use
This product is a hand-held device designed to measure light levels in a given environment. An indication of ambient
temperature is also given. Any other application beyond the conditions established for use will be considered misuse.
Draper Tools accepts no responsibility for improper use of this product.
Part of our core range, this product is suitable for regular use by enthusiasts and tradespersons alike.
• DO NOT use this product in environments in which
dust, steam or smoke are present as this may interfere
with the readings.
• DO NOT use this device in environments that exhibit or
are aected by strong magnetic elds.
• DO NOT use this product if it exhibits abnormal
behaviour and have it checked by a qualied and
authorised technician before next use.
• DO NOT abuse, mutilate or burn the battery.
• Keep this product out of reach of children.
4. Identication
4.1 Product Overview
(1)
(6) (4) (3)(5)
(2)
(7)
(4)
(1) Battery compartment
(2) Display
(3) Hold button
(4) Min/max button
(5) Mode button
(6) Power button
(7) Sensor
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accessories and consumables.
4.2 Display Overview
(9)(10)
(12)(17) (18)
(15)
(11) (13)(16) (14) (9)
(8) Auto-o indicator
(9) Battery level indicator
(10) Dew point temperature mode indicator
(11) Hold data indicator
(12) Humidity value
(13) Max value indicator
(14) Min value indicator
(15) Temperature unit indicator
(16) Temperature value
(17) Wet bulb temperature mode indicator
(18) Humidity unit indicator
5. Operation
5.1 Installing Batteries
This product requires 3 × 1.5V AAA batteries (not supplied).
To install the batteries, slide the battery compartment
cover (1) down and away from the back of the device and
insert the batteries according to the correct polarity.
5.2 Switching On and Basic Operation
To switch on the device, press the power button (6). The
device performs a diagnostics check during startup before
readings are shown on the display. Stand in the position to
be measured and direct the sensor (7) upwards.
Important: Take several measurements in the location to
ensure that the humidity level remains consistent and that
the reading is accurate.
The device begins measuring humidity levels and
temperature immediately and the readings are indicated on
the display. Readings are updated every 500ms.
To switch o the device, press the power button. This resets
the device.
5.3 Freezing the Display
The current readings can be held on the display by pressing
the hold button (3). The hold data indicator (11) illuminates
to show that the display has been frozen.
Important: While data is held on the display, no other
measurements are taken.
To resume measurements, press the hold button again or
press the mode button (5). The hold data indicator is
hidden and the display updates in real-time.
5.4 Maximum and Minimum Values
The display can be set to show the maximum or minimum
value recorded for both humidity levels and temperature
during an active session.
Press the min/max button to display the maximum value
recorded. Each subsequent press of the min/max button (4)
alternates between the highest and lowest values recorded
since the device was switched on. The max (13) or min (14)
value indicators illuminate as appropriate to identify the
value shown on the display.
Important: While min/max mode is active, no other
measurements are displayed unless they exceed the min or
max reading currently shown on the screen. These new
readings are then locked until they are surpassed by new
data.
To exit min/max display mode, press and hold the min/max
button for three seconds or press the mode button (5).
5.5 Temperature Mode
To change the temperature measurement mode, press the
mode button (5). Each press of the button advances to the
temperature mode:
• Ambient temperature
• Dew point temperature
• Wet bulb temperature
The device may take up to a second to update its display.
Ambient temperature is displayed by default and is
identied by the presence of no temperature mode
indicators. Other modes are identied by the illumination
of the appropriate mode indicator (10) (17).
Important: The large value display is always used for
relative humidity.
5.6 Temperature Units
The unit of the temperature reading can be changed during
startup.
Important: Ensure the correct unit of measurement for
temperature is enabled before capturing meaningful
readings as all readings are lost when the device is
switched o.
While the device is o, press and hold the hold button (3).
Keeping the hold button depressed, also press the power
button (6) to switch on the device. The device will launch
with the other temperature units enabled.
The default unit for temperature measurement is degrees
Celsius.
5.7 Automatic Switch-O
By default, the device is congured to power o
automatically after approximately 15 minutes of inactivity.
If automatic switch-o function is enabled, the auto-o
indicator (8) is illuminated on the device display.
To disable the automatic switch-o function, press and
hold the min/max button (4) while the device is o and,
keeping the min/max button depressed, also press the
power button (7) to switch on the device. The device will
launch with the function disabled.
Important: If automatic switch-o is disabled, this applies
only to the current active session. Automatic switch-o is
automatically enabled the next time that the device is
switched on.
Important: If automatic switch-o is disabled, the device
can only be powered down by pressing the power button.
Produktspezifikationen
| Marke: | Draper |
| Kategorie: | Messung |
| Modell: | 12444 |
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