UNI-T UT377A - Multimeter Clas Ohlson - Free user manual and instructions

Product Type	Digital Multimeter
Brand	Clas Ohlson
Model	UNI-T UT377A
Dimensions (H x W x D)	150 x 70 x 30 mm (approx.)
Weight	200 g (approx.)
Power Supply	1 x 9V battery (6F22)
Display	LCD, maximum reading 1999
AC Voltage Range	0-750V (True RMS)
DC Voltage Range	0-1000V
AC Current Range	0-10A (with overload protection)
DC Current Range	0-10A
Resistance Range	0-20 MΩ
Continuity Test	Audible buzzer < 30 Ω
Diode Test	Yes
Safety Category	CAT II 600V, CAT III 300V
Maintenance	Clean with dry cloth; replace battery when low
Spare Parts Available	Test leads, 9V battery
Manual Language	EN, FI, DE, NO, SV

Frequently Asked Questions - UNI-T UT377A Clas Ohlson

How do I measure AC voltage with the UNI-T UT377A?

To measure AC voltage, turn the rotary switch to the ACV (V~) range. Connect the black test lead to COM and red to VΩmA. Place the probes across the source. Read the value on the display. The UT377A supports True RMS up to 750V.

What is the purpose of the continuity test?

Continuity test checks if a circuit is complete. Set the dial to the continuity symbol (sound wave). The buzzer will sound if resistance is less than approximately 30 Ω. Disconnect power before testing.

How do I replace the battery?

Turn off the meter and disconnect test leads. Remove the screw at the back and slide off the battery compartment cover. Replace the old 9V battery with a new one (6F22 type). Reattach the cover and tighten the screw.

What safety precautions should I take?

Always use the correct input jacks and range. Do not exceed maximum limits. Remove test leads before opening the case. Use only the provided test leads with the appropriate safety rating (CAT II 600V). Work on de-energized circuits when possible.

Can the UT377A measure temperature?

No, the UNI-T UT377A does not measure temperature. It is a standard multimeter for voltage, current, resistance, continuity, and diode testing.

What does 'OL' on the display mean?

'OL' stands for overload. It indicates that the measured value exceeds the selected range. Switch to a higher range to obtain a valid reading.

How do I test a fuse with this multimeter?

Set the dial to resistance (Ω) or continuity. Place the probes on each end of the fuse. If the resistance is very low (or buzzer sounds), the fuse is intact. If it shows OL (open), the fuse is blown.

What are the dimensions of the device?

The approximate dimensions are 150 mm x 70 mm x 30 mm (H x W x D). It is a compact handheld multimeter.

Is the UT377A auto-ranging?

No, the UNI-T UT377A is a manual-ranging multimeter. You must select the appropriate range for each measurement to avoid overload.

How do I clean the multimeter?

Disconnect test leads and remove the battery. Use a soft, dry cloth to wipe the exterior. Do not use solvents or abrasive cleaners. Ensure the device is completely dry before reassembling.

USER MANUAL UNI-T UT377A Clas Ohlson

Please read the entire instruction manual before using the product and then save it for future reference. We reserve the right for any errors in text or images and any necessary changes made to technical data. In the event of technical problems or other queries, please contact our Customer Services (see address details on the back).

Safety

This product is intended for indoor use only.

• Never use the product if you suspect any type of electrical fault or short-circuit in the test area. Electric shocks can damage the product, cause personal injury and damage property.
• The product must not be used in environments where explosive gases are used, stored or handled.
• Do not expose the product to rain, impacts or vibrations during use or transport.
• Do not leave the product in direct sunlight for long periods.
• Remove the batteries if the product is not to be used for a long time. If left in the product, the batteries could leak and cause damage.
• The electrode pins on the product are very sharp. Never let children use the product.
• The protective cap should always be fitted whenever the product is not in use.
• Using the product close to strong magnetic fields can lead to false readings.
• Inspect the electrode pins for any damage before every measurement.

Buttons and functions

English

1. Protective cap
2. Electrode pin guard
3. Electrode pins
4. Temperature sensor
5. Display
6. [ ] Wood selector
7. [HOLD/BL] Press to hold a reading, hold in to turn on the backlight
8. [MODE] Press to switch measuring function, hold in to switch the automatic shut-off function on/off
9. [On/off

Display

1. Automatic shut-off indicator
2. Held reading indicator
3. Max measurement method
4. Min measurement method
5. Low battery warning
6. Material type (refer to the table)

Instructions for use Inserting batteries

Technical line drawing of an electronic device with cylindrical components and a label (no readable text or symbols)

1. Remove the battery cover.
2. Insert 3 × AAA/LR03 batteries. Observe the markings in the battery compartment to ensure correct polarity.
3. Refit the battery cover.

Removing the protective cap and electrode guard

Technical line drawing of a mechanical component inside a rectangular housing (no text or symbols)

English

1. Take of the protective cap.
2. Remove the electrode pin guard (2).
   Place the electrode guard into the protective cap so it does not become misplaced.

Switching on/off

Hold in [⏻] to switch the meter on/off.

Choosing the material

Press [▲] the required number of times to select the type of wood to be measured.

Wood
Afromosia 1
Brazilian walnut 1
Rhodesian teak 1
Walnut 2
Teak 2
Spruce 3
Oak 3
Birch 4
Larch 4
Pine 4

Selecting the measuring method

MAX - displays the highest measured value

1. Press [MODE] repeatedly until "MAX" appears on the display.
2. Press the electrodes into the material to be tested.

MIN - displays the lowest measured value

1. Press the electrodes into the material to be tested.
2. Press [MODE] repeatedly until "MIN" appears on the display.

Standard method – continuously displays the current reading

1. Press [MODE] repeatedly until neither "MAX" nor "MIN" appears on the display.
2. Press the electrodes into the material to be tested.

Note:

• Regardless which method you use, multiple readings should be taken from several points on the test object to get a representative picture of the moisture content.
• Make sure that the electrode pins are not bent. Press the electrodes straight into the test material and wiggle the meter carefully when extracting the electrodes after the measurement has been taken.

Technical line drawing of two electronic devices with mounting holes and a wooden base, showing internal components and directional arrows (no text or symbols)

Care and maintenance

Clean the product by wiping it with a damp cloth. Use only mild cleaning agents, never solvents or corrosive chemicals.

Responsible disposal

This symbol indicates that the product should not be disposed of with general household waste. This applies throughout the entire EU. In order to prevent any harm to the environment or health hazards caused by incorrect waste disposal, the product must be handed in for recycling so that the material can be disposed of in a responsible manner. When recycling your product, take it to your local collection facility or contact the place of purchase. They will ensure that the product is disposed of in an environmentally sound manner.

Symbol of a trash bin crossed out by two crossed lines, with no text or labels present.

Specifications

Measuring range 2–40 %

Accuracy ± 2.0 %

Operating temperature 0–40 °C

Batteries 3 × AAA/LR03 batteries (sold separately)

Dimensions 135 × 51 × 30 mm

Weight 130 g (including batteries)

Fuktkvotsmätare

Art.nr 36-7744 Modell UT377A

Svenska

Technical line drawing of an electronic device with cylindrical components and a label (no readable text or symbols)

Technical line drawing of a mechanical component inside a rectangular housing (no text or symbols)

Technical line drawing of two electronic devices with mounting holes and directional arrows indicating motion (no text or symbols)

Symbol of a trash bin crossed with no text or labels, accompanied by a black rectangular block below (no readable text or symbols)

Svenska

Specifikationer

Mätområde 2–40 %

Noggrannhet ± 2.0 %

Norsk

Technical line drawing of an electronic device with cylindrical components and a label (no readable text or symbols)

Technical line drawing of a mechanical component inside a rectangular housing (no text or symbols)

1. Ta av lokket på måleren.
2. Ta av beskyttelsen over stiftene (2). Plasser beskyttelsen i lokket så du ikke mister det.

På/av

Technical line drawing of a device with four ports and a base panel, no text or symbols present

Line drawing of a device with four ports and directional arrows indicating motion (no text or symbols)

Vedlikehold

Symbol of a trash bin crossed with no visible text or labels

Spesifikasjoner

Måleområde 2–40 %

Nøyaktighet ± 2.0 %

Brukstemperatur 0–40 °C

Batterier 3 × AAA/LR03-batterier (selges separat)

Mål 135 × 51 × 30 mm

Vekt 130 g (inkl. batterier)

Kosteusmittari

Tuotenro 36-7744 Malli UT377A

sumi

Technical line drawing of a mechanical device with cylindrical components and a label (no readable text or symbols)

Technical line drawing of a mechanical component inside a rectangular housing (no text or symbols)

Technical line drawing of two electronic devices with mounting holes and a wooden base (no text or symbols)

Huelto ja ylläpito

Symbol of a trash bin crossed out by two crossed lines, with no text or labels present.

Tekniset tiedot

Mittausalue 2–40 %

Tarkkuus ± 2.0 %

Deutsch

Technical line drawing of a mechanical device with rollers and a label (no readable text or symbols)

Technical line drawing of a mechanical component inside a rectangular housing (no text or symbols)

Technical line drawing of two identical electronic devices with mounting base and side-mounted ports, no text or symbols present.

Pflege und Wartung

Symbol of a trash bin crossed out by two crossed lines, with no text or labels present.

Technische Daten

Messbereich 2–40 %

Genauigkeit ± 2.0 %

Postal 10 – 13 Market Place

Kingston upon Thames

Surrey

KT1 1JZ

Deutsch

Kundenservice Hotline: [phone]

E-Mail: [e-mail]