DEM501 - Humidifier VELLEMAN - Free user manual and instructions

Product type	Digital hygrometer with thermometer
Brand	Velleman
Model	DEM501
Display	Backlit LCD 3 1/2 digits
Humidity measurement range	0 % RH to 100 % RH
Temperature measurement range	-20 °C to 70 °C (-4 °F to 158 °F)
Dew point measurement range	-20 °C to 70 °C (-4 °F to 158 °F)
Humidity accuracy (40-60 % RH)	± 2.0 % RH (@ 23 °C ± 5 °C)
Temperature accuracy	± 1.0 °C (1.8 °F)
Dew point accuracy	± 1.0 °C (1.8 °F)
Resolution	0.1 % RH, 0.1 °C, 0.1 °F
Sampling rate	1 time per second
Response time	1 s
Power supply	1 9 V 6F22 battery (included)
Auto power off	After 15 minutes of inactivity
Dimensions	192 x 62 x 33 mm
Weight (with battery)	± 151 g
Main functions	Humidity, temperature, dew point measurement, min/max, hold, backlight, °C/°F selection
Cleaning	Non-linting damp cloth, avoid alcohol and solvents
Maintenance	Store in a dry place, remove battery if not used for a long time
Safety	Keep out of reach of children, protect from moisture and shocks
Spare parts and repairability	No user-serviceable parts, order from the dealer
Warranty	24 months for consumer products (conditions apply)

Frequently Asked Questions - DEM501 VELLEMAN

How do I replace the battery in the DEM501?

Turn off the device, open the battery compartment with a screwdriver, remove the old battery and insert a new 9 V 6F22 battery, respecting polarity. Close the compartment.

How do I turn the device on and off?

Press and hold the power button for 1 second to turn on. To turn off, press and hold the same button for 3 seconds.

How do I use the min/max function?

Briefly press the MIN/MAX button to freeze the displayed value. Press and hold for 3 seconds to display the maximum recorded value, then briefly press for the minimum value. Press and hold to exit.

How do I select the temperature unit (Celsius or Fahrenheit)?

Press the °C/°F button to toggle between units. The display changes immediately.

How do I activate the backlight?

Briefly press the backlight button (light symbol) to turn on the screen brightness.

What does dew point mean and how do I measure it?

The dew point is the temperature at which moisture in the air begins to condense. To activate, press and hold the SET button for 3 seconds. The display shows 'DP'. Press and hold SET again to exit.

How do I clean the device?

Use a non-linting damp cloth. Avoid alcohol, solvents, and never immerse the device in liquid.

The device turns off by itself, is that normal?

Yes, automatic power off is enabled by default after 15 minutes of inactivity. You can disable this function by pressing the SET button.

How do I calibrate the hygrometer?

Turn off the device, press and hold the SET button, then turn it on. Use the backlight and °C/°F buttons to adjust the humidity value. Press SET to exit.

What should I do if the device malfunctions?

Check the battery and connections. If the problem persists, contact your dealer. The device contains no user-serviceable parts.

USER MANUAL DEM501 VELLEMAN

DIGITAL TEMPERATURE AND HUMIDITY METER MINI THERMO-/VOCHTIGHEIDSMETER MINI THERMO-/HUMIDIMÈTRE MEDIDOR DE TEMPERATURA Y HUMIDAD TEMPERATUR- UND FEUCHTIGKEITSMESSER MIERNIK TEMPERATURY I WILGOTNOŚCI MEDIDOR DE TEMPERATURA E HUMIDADE

vedeszer 85.6 Day 328 °C DEMOH HUMORITY & TEMPERATURE

USER MANUAL 3 GEBRUIKERSHANDLEIDING 7 MODE D'EMPLOI 12 MANUAL DEL USUARIO 17 BEDIENUNGSANLEITUNG 21 INSTRUKCJA OBSŁUGI 26 MANUAL DO UTILIZADOR 31

CE

DEM501

1 HOLD MAX MIN %RH 188.0 Dew 888.8 °C °F 2 3 4 5 6 7

Technical line drawing of a mechanical device with labeled parts (no text or symbols present)

① ② ③ ④ ⑤ HOLD MAX MIN %RH 188.0 Dew 888.0 °C F ⑩ ⑦ ⑨ ⑧

USER MANUAL

1. Introduction

To all residents of the European Union

Important environmental information about this product

This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm the environment. Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a specialized company for recycling. This device should be returned to your distributor or to a local recycling service. Respect the local environmental rules.

If in doubt, contact your local waste disposal authorities.

Thank you for choosing Velleman! Please read the manual thoroughly before bringing this device into service. If the device was damaged in transit, do not install or use it and contact your dealer.

2. Safety Instructions

	Keep this device away from children and unauthorized users.
	Keep this device away from rain, moisture, splashing and dripping liquids.
	Protect this device from shocks and abuse. Avoid brute force when operating the device.
	Protect the device against extreme heat and dust.
	There are no user-serviceable parts inside the device. Refer to an authorized dealer for service and/or spare parts.

3. General Guidelines

Refer to the Velleman® Service and Quality Warranty on the last pages of this manual.

• Familiarise yourself with the functions of the device before actually using it.
• All modifications of the device are forbidden.
• Only use the device for its intended purpose. Using the device in an unauthorised way will void the warranty.

4. Features

• temperature readout in °C or °F
- max / min record
- display hold
- dew point temperature measurement
- 3 12 -digits display with backlight
- low-battery indication

5. Overview

Refer to the illustrations on page 2 of this manual.

1	moisture sensor
2	LCD display
3	°C/°F button
4	MIN/MAX button

5	setting button
6	backlight button
7	on-off button
8	battery compartment

Display

1	battery level
2	data hold
3	MAX value
4	MIN value
5	humidity unit

6	current reading
7	temperature unit
8	temperature reading
9	auto power off
10	dew point

6. Battery

1. To replace the battery, make sure the device is switched off.
2. Open the battery compartment at the back using an appropriate screwdriver.
3. Take out the old battery and replace with a new and identical 9 V battery following the polarity markings inside the compartment.
4. Close the battery compartment.

Warning: Do not puncture batteries or throw them in fire as they may explode. Do not attempt to recharge non-rechargeable batteries (alkaline). Dispose of batteries in accordance with local regulations. Keep batteries away from children.

7. Operation

1. Press the on-off button for 1 second to switch on the meter.
2. Briefly press the on-off button to switch on the backlight.
3. Hold the sensor close to the source to be measured. The display shows the measured value.
4. Press the °C/°F button to select the temperature measurement unit.

DEM501

1. Press the setting button to switch the auto power-off function on or off.
2. Hold the setting button pressed for 3 seconds to enter the dew point measurement mode. Hold the setting button pressed again to exit the function.
3. When powered off, keep the setting button pressed and switch on the meter to enter the humidity calibration mode. Increase or decrease the humidity setting with the backlight and °C/°F buttons. Press the setting button to exit the mode.
4. Briefly press the MIN/MAX button to freeze the reading on the display. Press again to unfreeze.
5. Hold the MIN/MAX button for 3 seconds to display the recorded maximum value, briefly press to display the recorded minimum value, hold pressed to exit the function.
6. Press the on-off button for 3 seconds to switch off the meter.

8. Cleaning and Maintenance

• Wipe the device regularly with a moist, lint-free cloth. Do not use alcohol or solvents. DO NOT submerge the device in any liquid.
• Store the meter in a dry place away from humidity and vibrations.
• Remove the battery when the meter is to be stored for long periods of time.

9. Technical Specifications

display		LCD with backlight
sensor type
	humidity	precision capacitance sensor
	temperature	thermistor (head) and K-type thermocouple
measurement range
	humidity	0 % RH ~ 100 % RH
	temperature	-20°C ~ 70°C (-4°F ~ 158°F)
	dew point temperature	-20°C ~ 70°C (-4°F ~ 158°F)
humidity accuracy
	40 % to 60 % RH	+/- 2.0 % RH (@ 23°C +/- 5°C)
	20 % to 40 % RH	+/- 3.0 % RH (@ 23°C +/- 5°C)
	60 % to 80 % RH	+/- 3.0 % RH (@ 23°C +/- 5°C)
	0 % to 20 % RH	+/- 4.0 % RH (@ 23°C +/- 5°C)
	80 % to 100 % RH	+/- 4.0 % RH (@ 23°C +/- 5°C)
temperature accuracy
	-20°C to 70°C(-4°F to 158°F)	+/- 1.0°C (1.8°F)

DEM501

dew point temperature accuracy
-20°C to 70°C(-4°F to 158°F)	+/- 1.0°C (1.8°F)
response time	1 sec.
sample rate	1x / sec.
overload indication	"OL"
resolution	0.1 % RH, 0.1°C, 0.1°F
operating conditions	-20°C to 70°C (14°F to 158°F);< 80 % RH non-condensing
storage conditions	-20°C to 70°C (14°F to 158°F);< 80 % RH non-condensing
auto power-off	device shuts down automatically if no key is pressed for ± 15 min.
battery	1x 9 V 6F22 (incl.)
dimensions	192 x 62 x 33 mm
weight (with battery)	± 151 g

Use this device with original accessories only. Velleman nv cannot be held responsible in the event of damage or injury resulting from (incorrect) use of this device. For more info concerning this product and the latest version of this manual, please visit our website www.velleman.eu. The information in this manual is subject to change without prior notice.

© COPYRIGHT NOTICE

The copyright to this manual is owned by Velleman nv. All worldwide rights reserved. No part of this manual may be copied, reproduced, translated or reduced to any electronic medium or otherwise without the prior written consent of the copyright holder.

GEBRUIKERSHANDLEIDING

1. Inleiding

© INFORMACJA O PRAWACH WŁASNOŚCI

Velleman® Service and Quality Warranty

Since its foundation in 1972, Velleman® acquired extensive experience in the electronics world and currently distributes its products in over 85 countries.

All our products fulfil strict quality requirements and legal stipulations in the EU. In order to ensure the quality, our products regularly go through an extra quality check, both by an internal quality department and by specialized external organisations. If, all precautionary measures notwithstanding, problems should occur, please make appeal to our warranty (see guarantee conditions).

General Warranty Conditions Concerning Consumer Products (for EU):

• All consumer products are subject to a 24-month warranty on production flaws and defective material as from the original date of purchase.
• Velleman® can decide to replace an article with an equivalent article, or to refund the retail value totally or partially when the complaint is valid and a free repair or replacement of the article is impossible, or if the expenses are out of proportion.
  You will be delivered a replacing article or a refund at the value of 100% of the purchase price in case of a flaw occurred in the first year after the date of purchase and delivery, or a replacing article at 50% of the purchase price or a refund at the value of 50% of the retail value in case of a flaw occurred in the second year after the date of purchase and delivery.

- Not covered by warranty:

• all direct or indirect damage caused after delivery to the article (e.g. by oxidation, shocks, falls, dust, dirt, humidity...), and by the article, as well as its contents (e.g. data loss), compensation for loss of profits;
• consumable goods, parts or accessories that are subject to an aging process during normal use, such as batteries (rechargeable, non-rechargeable, built-in or replaceable), lamps, rubber parts, drive belts... (unlimited list);
• flaws resulting from fire, water damage, lightning, accident, natural disaster, etc....;
• flaws caused deliberately, negligently or resulting from improper handling, negligent maintenance, abusive use or use contrary to the manufacturer's instructions;
• damage caused by a commercial, professional or collective use of the article (the warranty validity will be reduced to six (6) months when the article is used professionally);
• damage resulting from an inappropriate packing and shipping of the article;
• all damage caused by modification, repair or alteration performed by a third party without written permission by Velleman®.
• Articles to be repaired must be delivered to your Velleman® dealer, solidly packed (preferably in the original packaging), and be completed with the original receipt of purchase and a clear flaw description.
• Hint: In order to save on cost and time, please reread the manual and check if the flaw is caused by obvious causes prior to presenting the article for repair. Note that returning a non-defective article can also involve handling costs.
• Repairs occurring after warranty expiration are subject to shipping costs.
• The above conditions are without prejudice to all commercial warranties.

The above enumeration is subject to modification according to the article (see article's manual).

NL