General Information - Benning IT 100 Instrucciones De Servicio

 Digital display for the measurement readings and polarity indication,
 Analog bargraph display,
 Digital display for the test voltage,
 Battery indicator - "
Section 5.1.15)
button, activates and deactivates the buzzer,

button (latching), permits continuous measurement of insulation resis-

tance and low resistance,
button (zero adjustment button), permits zero compensation of the resis-

tance of the measuring cables for making low resistance measurements,
button (display illumination), switches the display illumination on and off.

button, activates the measuring function for insulation resistance and

low resistance.
 Rotary switch, for selecting the measuring functions (see Section 7)
 Negative socket (-)
 Positive socket (+)
5.

General information

5.1 General information concerning the insulation measuring instrument.
5.1.1 The digital display  for the measurement readings is a 3½ - digit liquid
crystal display with decimal point. The height of the displayed digits is
11 mm. The largest numerical value which can be displayed is 2000.
5.1.2 The polarity indication  is automatic. Only one polarity with respect to
the socket marked " - " is indicated.
5.1.3 The bargraph display  consists of 63 segments and depicts resistance
readings on a logarithmic scale and voltage readings on a linear scale.
5.1.4 The digital display for the test voltage  is a 3½ digit liquid crystal
display with 8 mm high numerals. The largest value which can be
displayed is 2000.
5.1.5 Range overflow of the digital display  is indicated with the symbol " >
".
5.1.6 The BENNING IT 100 has an automatic measuring range selection
function (autoranging).
5.1.7 The
(switch setting:  ).
5.1.8 The
on resistance and low resistance without having to press the
t o n repeatedly or to hold it in the pressed state. To switch over for
continuous measurements, press and hold the
then press the
buttons. The locked symbol ( ) appears in the display. When measu-
ring insulation resistance, pressing the
test voltage to the measuring point. An acoustic signal sounds at intervals
of 2 seconds. When measuring low resistance, pressing the
continually applies the test current to the measuring point. The locked
state can be terminated by pressing the
In locked mode (

external voltage at the input of the instrument. Make sure that
the measuring point is free of voltage before activating the
locked mode, otherwise the fuse could blow.
5.1.9 The
resistance of the measuring cables for making low resistance measu-
rements.
5.1.10 The button  switches on the display illumination. Press the button
again to switch off the illumination.
5.1.11 The
resistance and low resistance.
5.1.12 The BENNING IT 100 is switched on and off with the rotary switch. The
off setting is "0".
5.1.13 The BENNING IT 100 switches itself off automatically after about
10 minutes. In locked mode ( ) (continuous measurements) automatic
switch off takes place after 30 minutes. The instrument switches itself
on again automatically when a button is actuated, or the measuring
range selector switch is turned, or a voltage as from 30 V AC/ DC is
connected to the input of the instrument.
5.1.14 The BENNING IT 100 is powered by six 1.5 V Mignon monocells (IEC/
DIN R6/ LR6).
5.1.15 After switch on the battery symbol appears at the top right in the display
for about 5 seconds (
tery capacity is indicated by four segments. The battery symbol persists
11/ 2004
", appears when the battery is exhausted (see
button  permits activation and deactivation of the buzzer
button  (lock) permits continuous measurements of insulati-
button at the same time and thereafter release both
button) the BENNING IT 100 recognises no
button  permits compensation (zero adjustment) of the
button  activates the measuring function for insulation
BENNING IT 100
, , , ,
button pressed,
button continually applies the
button or the
). The still available bat-

but-
button
button.
12