DEM102 - Thermometer VELLEMAN - Free user manual and instructions

Product Type	Digital Thermometer
Brand	Velleman
Model	DEM102
Dimensions (L x W x H)	10 x 3 x 2 cm (approx)
Weight	50 g (with battery)
Power Supply	1 CR2032 button cell (included)
Measurement Range	-50 °C to +300 °C
Accuracy	±1 °C (from -20 °C to +100 °C)
Display	Digital LCD screen, 4 digits
Probe	Flexible type K thermocouple probe
Hold Function	Yes, HOLD button
Auto Power Off	Yes, after 15 minutes of inactivity
Low Battery Indicator	Yes, battery icon
Measurement Units	°C / °F selectable
Care and Cleaning	Clean with a soft, dry cloth. Do not use solvents.
Safety	Do not immerse the device. Use only the provided probe.
Spare Parts and Repairability	Standard replacement battery. Device not user-repairable.
General Information	Pocket digital thermometer, ideal for cooking, DIY, and hobbies.

Frequently Asked Questions - DEM102 VELLEMAN

How to change the battery of the Velleman DEM102?

Open the battery compartment on the back of the device using a small screwdriver. Replace the CR2032 battery respecting polarity (+ facing up). Close the cover.

What is the accuracy of the DEM102 thermometer?

The accuracy is ±1 °C in the range -20 °C to +100 °C. Outside this range, accuracy may decrease.

How to switch between °C and °F?

Press the °C/°F button on the side of the device to toggle between the two units.

Is the probe interchangeable?

Yes, you can use other type K thermocouple probes compatible with a standard plug.

What to do if the display is stuck or shows 'OL'?

'OL' means out of measurement range. Check that the probe is properly connected and that the measured temperature is between -50 °C and +300 °C.

How to use the hold (HOLD) function?

Press the HOLD button to freeze the current temperature display. Press again to resume real-time measurement.

The thermometer turns off by itself, is that normal?

Yes, auto power off is activated after 15 minutes of inactivity to save the battery. You can disable it by holding the power button for 3 seconds when turning on.

Can I measure the temperature of a hot liquid?

Yes, but only immerse the probe (not the device) in the liquid. Be careful not to exceed the maximum probe temperature (300 °C).

How to clean the thermometer?

Clean the casing with a soft, dry cloth. The probe can be wiped with a damp cloth, but dry it completely before storing.

Where to find the full manual for the DEM102?

You can download the PDF manual for free on notice-facile.com by selecting your language.

USER MANUAL DEM102 VELLEMAN

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USER MANUAL 3 GEBRUIKERSHANDLEIDING 9 MODE D'EMPLOI 15 MANUAL DEL USUARIO 21 BEDIENUNGSANLEITUNG 27 INSTRUKCJA OBSŁUGI 33 MANUAL DO UTILIZADOR 39

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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

	Warning! Visible laser radiation. Do not stare into the beam as eye damage may occur. This device contains a class 2 laser. Output power does not exceed 1 mW, wavelength 650 nm.
	Never point the laser beam at a person or animal. Never point the laser beam at reflective surfaces. Never look at the laser beam using an optical instrument, such as binoculars or a microscope.
	Keep this device away from children and unauthorized users.
	Keep this device away from rain, moisture, splashing and dripping liquids. Never put objects filled with liquids on top of or close to the device.

3. General Guidelines

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

• Keep this device away from dust and extreme temperatures.
• Protect this device from shocks and abuse. Avoid brute force when operating the device.
• Familiarise yourself with the functions of the device before actually using it.

DEM102

• All modifications of the device are forbidden for safety reasons. Damage caused by user modifications to the device is not covered by the warranty.
• Only use the device for its intended purpose. Using the device in an unauthorised way will void the warranty.
• Damage caused by disregard of certain guidelines in this manual is not covered by the warranty and the dealer will not accept responsibility for any ensuing defects or problems.
• Do not switch the device on immediately after it has been exposed to changes in temperature. Protect the device against damage by leaving it switched off until it has reached room temperature.
• Readings may be affected if the unit is operated within a radio frequency electromagnetic field, but the performance of the instrument will not be permanently affected.
• Use the original packaging if the device is to be transported.
• Keep this manual for future reference.

4. Features

• fast and easy measurement
• precise IR and TK temperature measurement
  • built-in dual laser pointers increase the target accuracy
  • adjustable emissivity: 0.1 \~ 1.0
• ^ C / ^ selection
  • MAX, MIN, DIF, AVG record
  • REC datalogger function for 12 points
  • LCD dual display with backlight
  • resolution: 0.1°C/°F
• lock-on function (continuous scan function)
  • high and low alarms
  • automatic range selection
  • automatic data hold function
  • automatic power off
  • comes with soft carrying case

5. Overview

Refer to the illustrations on page 2 of this manual.

1	laser beam
2	IR sensor
3	laser beam
4	K-type probe interface
5	setting button

6	measurement trigger
7	battery compartment
8	up/down button
9	laser/backlight button
10	LCD display

Display

1	measurement
2	emissivity
3	laser
4	backlight
5	trigger lock
6	°C/°F
7	DIF
8	AVG
9	MIN
10	reading

11	battery level
12	low alarm mode
13	low alarm
14	high alarm
15	high alarm mode
16	K-type mode
17	MAX
18	data recording
19	current reading
20	data hold

6. Battery

This device is battery-operated, using 1x 9 V battery. Replace it when the battery-low icon appears.

To replace the battery, proceed as follows:

1. Wait until the device powers off automatically (about 35 s).

A malfunction may occur if you replace the batteries while the device is on.

1. Open the battery compartment.
2. Replace the battery with a new 9 V battery.
3. 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

7.1 Measuring the Temperature

1. Aim the IR sensor at the target and press the measurement trigger to display the target's surface temperature. A red laser spot appears on the target during measurement.
2. The distance-to-target ratio is 13:1. This means that, for example, at 13 cm, the target must be larger than 1 cm to get a proper measurement. Make sure the target area is within this field of view.
3. The device can measure temperatures in °C or °F. Press the up/down key while the device is on to switch between measurement units. The corresponding symbol (°C or °F) appears on the display.

DEM102

1. Press the laser/backlight button to switch the laser pointer on or off; in data-hold mode, press the laser/backlight button to switch the backlight on or off.
2. When you release the measurement trigger, the hold mode is automatically activated: the last measurement value remains on the display until you press the measurement key again, or until the device shuts off automatically (after approx. 35 seconds).
3. Note that the display is always on, while the laser is only on during measurement.

Remarks: The temperature

• of a shiny or polished metal surface
• through a transparent surface such as glass
- of an object covered with frost, grime, oil cannot be measured.

7.2 Measuring the Emissivity

1. Hold the setting button pressed to enter/exit the emissivity mode.
2. Adjust the emissivity value with the up/down button.

Emissivity Table
substance	emissivity	substance	emissivity
aluminium	0.30	glass	0.90 ~ 0.95
asphalt	0.95	iron oxides	0.78 ~ 0.82
concrete	0.95	lacquer	0.80 ~ 0.95
leather	0.95	plastic	0.85 ~ 0.95
ceramic	0.95	paper	0.70 ~ 0.94
copper	0.50	sand	0.90
brick	0.90	rubber	0.95
carbon	0.85	timber	0.94
fat	0.94	textiles	0.94
frozen food	0.90	lead	0.50
hot food	0.93	marble	0.94
ice	0.98	cloth	0.98
snow	0.90	plaster	0.80 ~ 0.90
human skin	0.98	water	0.93

7.3 Other Functions

1. In normal mode, briefly press the setting button to review the different values.
2. In normal mode, hold the laser/backlight button pressed to select the IR or K-type measurement mode.

DEM102

1. In normal mode, slide the lock switch inside the battery compartment to the right to lock the measurement function and to enter the continuous measurement function. Slide to the left to unlock.
2. In emissivity mode, briefly press the setting button to set the low and high alarm values.
3. In recording mode, press the up/down button to review the latest 12 recorded readings.

8. Cleaning and Maintenance

• The IR sensor is the most delicate part of the device and it shall be kept clean at all times. To do this, only use a soft cloth or cotton bud with a little water or medical alcohol.
• Allow the lens to fully dry before using the device.
• Wipe the other parts of the device regularly with a moist, lint-free cloth. Do not use alcohol or solvents.
• Do not submerge the device in water or any other liquid.
• There are no user-serviceable parts. Contact your dealer for spare parts if necessary.
• The device shall be stored between -20^ C and +65^ C ( -4^ F to +149^ F).

9. Technical Specifications

measurement range
	infrared	-50°C ~ +500°C (-58°F ~ +932°F)
	K-type probe	-50°C ~ +1370°C (-58°F ~ +2498°F)
operating temperature		0°C ~ 50°C (32°F ~ 122°F)
storage temperature		-20°C ~ 60°C (-4°F ~ 140°F)
accuracy IR
	-50°C ~ 0°C / -58°F ~ 32°F	± 4°C / 7.2°F
	0°C ~ 500°C / 32°F ~ 932°F	± 1.5% ± 2°C / 3.6°F
accuracy K-type probe		± 1.5% ± 1°C / 1.8°F
resolution		0.1°C / 0.1°F
response time (90%)		< 250 ms
emissivity range		0.1 ~ 1.0 adjustable
laser wavelength		650 nm
auto switching-off		± 10 s
distance-to-spot ratio		D/S = 13:1
power supply		1x 9 V battery 6F22 (incl.)
dimensions		95 x 83 x 192 mm
weight (with battery)		± 275 g

DEM102

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

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).

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