Measuring; Continuity Test On Protective Conductors; Calibration Of Measuring Cables; Measuring In Auto Mode - T.I.S. INSTRUMENTS MFT-PRO Quick Reference Manual

4. MEASURING

 – CONTINUITY TEST ON PROTECTIVE CONDUCTORS
4.1.
 The instrument can be used for measurements on installations with overvoltage category CAT III 240V
to earth and CAT III 415V between inputs. Category CAT III is suitable for measurements carried out on
installations inside buildings with low voltage (examples are distribution boards, wirings, switches, fixed
installation sockets, electric motors, industrial equipment).
 We recommend holding the alligator clip respecting the safety area created by the hand protection (see
§ 2.4).
 Check that no voltage is present at the ends of the item to be tested before carrying out a continuity test.
 The results may be influenced by the presence of auxiliary circuits connected in parallel with the item to
be tested or by transient currents.
Access the general menu by pressing the HOME key
the following screen:
The display of symbol "
4.1.1.

Calibration of measuring cables

1. Connect the measuring leads as shown in the following figures:
Calibration with measuring leads
2. Press key F3 or touch the relevant icon
3. At the end of calibration, the instrument will display the symbol "
4.1.2.

Measuring in AUTO mode

1. Select AUTO mode by pressing key F1 or touching the relevant icon
2. Press key F2 or touch the relevant icon
3. Connect the measuring leads as shown in the following figures
4. Press the GO/STOP key on the instrument or the START key on the remote lead PR400. The instrument
starts measuring and provides a result on the display, then gives out a double sound in case the result is
positive
Continuity with measuring leads
5. Press the SAVE key or touch the relevant icon
display. Confirm saving by pressing the SAVE key again, or the relevant icon.
" in red indicates that no cable calibration has been performed.
to start cable calibration.
to set the minimum level for measurement
EN – 7
CAUTION
and select function
Calibration with remote lead PR400
" in green.
Continuity with remote lead PR400
to save the result of measurement shown on the
MFT-PRO
Quick reference guide
. The instrument shows
or