Maintenance And Calibration; Frequency Measurement; Technical Data And Measurement Tolerances - Conrad F 113 Bedienungsanleitung

5.5 Frequency Measurement

To measure the frequency of an AC voltage (e.g. of a signal gene-
rator) proceed as follows:
a) Please read Section 5.3.1 of these instructions (connection of
the measuring leads). Set the measurement function switch
to „kHz".
b) Connect the measurement probes to the measurement
object (load, voltage source, circuit, etc.). Please study the
figure shown below.
c) At frequencies greater than 4 MHz, the LCD displays „OL"
(for overload) instead of a measurement value.
kHz
AC
red measuring
line
black measuring line
18
parallel connecting points

6. Maintenance and Calibration

To ensure accuracy of the multimeter over a longer period, it
should be calibrated once a year.
Battery replacement is described under Section 4.1. For cleaning
the device or the display window, use only a clean, dry, antistatic
lint-free cleaning rag.
Important!
Never use cleaning agents containing carbon, petrol, alcohol or
similar since these will attack the surface finish of the measuring
device. Also, the vapors are a health and explosion hazard.

7. Technical Data and Measurement Tolerances

7.1 Technical Data
Display . . . . . . . . . . . . . .: 3
matic polarity indicator
Max. measurement rate : 3 measurements per second
Max. voltage in
measuring circuit . . . . . .: 600 Vrms
Frequency range . . . . . .: 45 Hz to 400 Hz (for current measure-
ment)
1 Hz to 4 kHz (3.999 MHz) for frequency
measurement)
Max. AC/DC input
current . . . . . . . . . . . . . .: 1000 Arms
Op. temperature . . . . . .: 0° C to +45° C
3
/ digit LCD up to 1999 with auto-
4
19