Sealey TM103 User Manual download pdf (Page 7)

5.1. REPLACING THE BATTERY

 WARNING! To avoid electric shock, disconnect the test leads from any source of voltage before removing the battery

cover.

5.1.1. When the battery become exhausted or drops below the operating voltage, “BAT” will appear in the LCD display.

The battery should be replaced.

5.1.2. Follow instructions for installing the battery. See the Battery Installation section of this manual (page 2).

Dispose of the old battery properly.

 WARNING! To avoid electric shock, do not operate your meter until the battery cover is in place and fastened securely.

5.2. REPLACING THE FUSES

 WARNING! To avoid electric shock, disconnect the test leads from any source of voltage before removing the fuse cover.

 WARNING! Before attempting to open the case, ensure that the test leads have been disconnected from the multimeter

and that it is switched off to avoid electric shock hazard.

5.2.1. Disconnect the test leads from the meter and any item under test.

5.2.2. Open the fuse cover by loosening the screw on the cover using a Phillips head screwdriver.

5.2.3. Remove the old fuse from its holder by gently pulling it out.

5.2.4. Install the new fuse into the holder.

5.2.5. Always use a fuse of the proper size and value (0.5A/250V fast blow for the 400mA range, 10A/250V fast blow for the 10A

range).

5.2.6. Replace the fuse cover back in place. Insert the screw and tighten it securely.

 WARNING! To avoid electric shock, do not operate your meter until the fuse cover is in place and fastened securely.

5.3. Clean the multimeter’s casing using a slightly dampened cloth and mild detergent - do not use any abrasives or solvents.

Clean the inside of each terminal using a swab soaked in isopropyl alcohol, use a new swab to apply a light coat of

machine oil to each terminal.

5.4. If the multimeter is to be stored for a long period of time, remove the battery first to avoid any damage.

4.12. FREQUENCY MEASUREMENT

4.12.1. Set the function switch to the FREQ “Hz” position.

4.12.2. Insert the black test lead banana plug into the negative (-) jack (COM) and the red test lead banana plug into the positive

(+) jack (F).

4.12.3. Touch the test probe tips to the circuit under test.

4.12.4. Read the frequency in the display. The digital reading will indicate the proper decimal point, symbols (Hz, kHz) and value.

4.13. CAPACITANCE MEASUREMENTS

 WARNING! To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any

capacitance measurements. Remove the batteries and unplug the line cords.

4.13.1. Set the function switch to the CAP position. (“nF” and a small value will appear in the display).

4.13.2. Insert the black test lead banana plug into the negative (-) jack (COM) and the red test lead banana plug into the positive

(+) jack (CAP).

4.13.3. Touch the test leads to the capacitor to be tested. The display will indicate the proper decimal point, value and symbol.

4.14. TEMPERATURE MEASUREMENTS

 WARNING! To avoid electric shock, disconnect any test probes from any source of voltage before making a temperature

measurement.

4.14.1 If you wish to measure temperature in °F, set the function switch to the °F range. If you wish to measure temperature

in °C, set the function switch to the °C range.

4.14.2. Insert the type K thermocouple into the thermocouple adaptor ensuring thermocouple “+” positive is matched with the “+”

mark on the adaptor. Insert the adaptor into the meter ensuring the “-” negative pin is in the negative COM jack and the “+”

pin is in the positive Temp jack.

4.14.3. Touch the Temperature Probe head to the part whose temperature you wish to measure. Keep the probe touching the

part under test until the reading stabilizes (about 30 seconds).

4.14.4. Read the temperature in the display. The digital reading will indicate the proper decimal point and value.

 WARNING! To avoid electric shock, be sure the thermocouple has been removed before changing to another

measurement function.

5. MAINTENANCE

4.11.6. The diode or junction can be evaluated as follows:

A. If one reading shows a value and the other reading shows “OL”, the diode is good.

B. If both readings show “OL”, the device is open.

C. If both readings are very small or 0, the device is shorted.

NOTE: The value indicated in the display during the diode check is the forward voltage.

TM103 Issue No: 2(I) - 18/06/14

Original Language Version

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Sealey TM103 User Manual Page 7

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