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Gossen Metrawatt METRAHIT 18S Manual

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Analog-digital multimeters
METRA 12S ... 18S, 14A
GOSSEN-METRAWATT 1
CAMIL
LE
BAUER
M
E
TRAWATT
G
OSSEN
Automatic Blocking System (ABS) *
The automatic blocking system prevents incorrect connection of
the test leads and incorrect selection of the measured quantity.
This reduces danger to the user, the meter and the system to a
remarkable extent, and eliminates it in many cases.
Interface and software METRAwin 10
The multimeters are fitted with a serial RS-232 C interface via
which the measured values, the position of the operating controls
and the meter type can be transmitted to a PC by means of a
telegram. These values, electrically isolated, are transmitted to the
attachable interface adapter with infrared light through the case *.
MIN/MAX value storage
In addition to the display of the actual measured value, the mini-
mum or maximum value can constantly be updated and stored.
Indication of negative values on the analog scale
When measuring DC quantities, also negative values are shown
on the analog scale so that variations of the measured value can
be observed at the zero point.
Root-mean-square value with distorted waveform
(METRA
Hit
16S and 18S)
The measuring principle employed permits the measurement of
the root-mean-square value (TRMS) of AC quantities and mixed
quantities (AC and DC) regardless of the waveform.
Automatic data hold *
The DATA HOLD function makes it possible to hold the digitally
displayed measured value. According to a patented method, it is
ensured that no freak value but the actual measured value is held
in the case of rapid changes in measured quantities. The held
measured value appears on the digital display. The actual mea-
sured value continues to be shown on the analog scale.
Autoranging/manual range selection
The measured values are selected with the rotary switch.
The measuring range is automatically matched to the measured
value. The measuring range can also be selected manually via the
AUTO/MAN push-button.
Continuity test
This permits testing for short circuit and/or interruption. In addi-
tion to the display, a sound signal is possible.
Temperature measurement
It is possible to use all meters for direct connection of temperature
sensors, automatic identification of Pt 100 and Pt 1000 elements
as for temperature measuring ranges.
Overload warning
A sound signal reports violation of the overload limits.
Signalling in the case of a blown fuse
The display FUSE points to a blown fuse.
Power economizing circuit
The meter disconnects automatically when the measured value
remains unchanged for about 10 minutes and no operating con-
trol was operated during this time. The disconnection facility can
be disabled.
Protective holster for rough duty
A holster of soft rubber with tilt stand protects the meter against
damage in the case of shock and drop. The rubber material
makes for the meter to stand firmly even on a vibrating surface.
* Protected by patent rights
Top model METRA
Hit
18S
The top model METRAHit 18S features a 4 3/4 digit display
(31 000 digits) as well as the following additional functions:
Event counter, measurement of the duration of the event, total
time, time counter, data compare, MIN/MAX values with time rec-
ognition and wide-range capacitance measurement.
Calibration
The multimeters of the METRAHit S series can be calibrated auto-
matically via the RS-232 data interface with the aid of the multi-
function calibrator METRAtop 90C and the METRAwin 91 soft-
ware.
Training
We offer interesting seminars with practical training on the topic
"Correct measurements in adverse environmental conditions
(EMC) with multimeters and PC". The seminars are in German.
These seminars also provide detailed information on the operation
of the METRAHit 18S including the METRAwin 10 software and
also deal with the actual measurements specified by DIN VDE.
Mark approvals
Applied rules and standards
IEC 1010-1
DIN EN 61010 part 1
VDE 0411-1
Safety requirements for electrical equipment
for measurement, control and laboratory use
DIN 43 751 Digital measuring instruments
DIN EN 50081 part 1 Generic emission standard;
residential, commercial and light industry
DIN EN 50082 part 1 Generic immunity standard;
residential, commercial and light industry
VDI/VDE 3540 Reliability of measuring and control equipment
DIN EN 60529
DIN VDE 0470 part 1
Test equipment and test procedures
– Degrees of protection provided by enclosures (IP Code)
1 …


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