KC27 GOSSEN METRAWATT, KC27 Datasheet - Page 2

• Manufacturer Part Number: KC27
• Description: PROBES, KELVIN
• Manufacturer: GOSSEN METRAWATT
• Series: METRAHITr

Specifications of KC27

• Svhc: No SVHC (18-Jun-2010)
• Lead Free Status / RoHS Status: na

METRA HIT 27M and 27I
Milliohm Resistance Meter and Digital Multimeter,
Insulation Tester and Data Logger
Applications
The METRA HIT 27 is a compact, rugged and reliable instrument,
which is equally suitable for precision measuring and recording
tasks in the factory, for on-site service and in the laboratory:
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General
The METRA HIT 27 milliohm resistance meters are the modern
alternative for the well known TH2 (Thomson) and Wh2
(Wheatstone) measuring bridges. They provide an expanded
measuring range, greater accuracy and easier reading. As
universal measuring and test instruments, they acquire and
record values to an integrated memory module including
resistance in the milliohm and micro-ohm ranges, as well as
“normal multimeter resistance values” in the ohm to mega-ohm
ranges by feeding a measuring current to the resistor, conductor
or contact under test. The respective measuring current is
determined by the rotary selector switch setting and lies within a
range of 1 to 0.02 A in the milliohm ranges. The instrument also
measures and records insulation resistance (METRA HIT 27I only)
with test voltage selectable in steps, for example in order to test
resistance in on-board electrical systems for aircraft, ocean going
vessels etc., and for testing overvoltage arresters and much
more.
Easy Operation
Operation is very easy. Simply connect the low-resistance device
under test to the instrument with the included measurement
cables, Kelvin clips or 4-pole probes (KC27), and select the ideal
measuring range.
Integrated Measured Value Memory and Interface
Each METRAHit
module and can thus be utilized as a data logger or a recording
instrument for all measuring functions. Measurement results can
be transmitted to a PC either off-line via the optical interface
which is furnished as standard equipment, or online with an
optional bidirectional adapter. In this way, for example,
characteristic voltage and temperature curves (see figure below)
can be displayed and analyzed in line recorder format relative to
real-time, or individual measured values, e.g. voltages for each of
the cells in a rechargeable battery, can be saved with the DATA
Hold function and analyzed at a PC in tabular form.
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Adjustment of shunts in instrumentation
Testing of electrical connections at conductor bars for open-
pit mining, in potential bonding systems, and for industrial and
household applications
Testing of cable resistance, wiring, shunt resistors in PCBs
and thick-film circuits
Measurement of contact resistance in relays, contactors and
power interrupters
Testing of resistance in fuses, as well as conductor resistance
in heavy current circuits
Testing of winding resistance in transformers, coils, small
motors etc.
Testing of discharge resistance on aircraft, and at aircraft
outer skin components
Contact resistance testing in uninterruptible power supplies
Measurement of cell voltages, for example in on-board
batteries and emergency power supplies
Contact resistance testing at welding seams
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27 is equipped with a measured value memory
METRAwin
Recorded characteristic temperature curve and triggering
characteristics (2-channel recording with 2 METRA HIT
instruments) plus evaluation at a PC
METRAwin
Measurement data recorded to the measured value memory
module can be evaluated at a PC if required with the help of the
IR interface supplied as standard equipment and a bidirectional IR
adapter (BD adapter) with conversion to the RS 232 protocol.
METRAwin
recommended to this end, and is suitable for display, analysis and
documentation of measurement results using Windows
2000 or XP. The software is available as an accessory. User-
friendly complete packages (e.g. the BD Pack or the complete
METRA HIT 27AS case) are easy to connect and install and
include everything required for high performance measurement
data processing.
Offset Balancing
Automatic offset balancing is provided for the lower measuring
ranges. Manual offset balancing, as required with the METRA
HIT17 predecessor model, is thus no longer necessary.
Protection Against Operator Error
The METRA HIT 27 is safeguarded against erroneous short-term
connection to devices under test with fault voltages of up to
600 V by means of protective devices.
Test Functions and Automatic Functions
All METRA HIT 27 instruments are equipped with diode and
continuity test functions, as well as automatic and manual
measuring range selection and battery shutdown.
Protective Cover for Harsh Conditions
The device features a very compact, rugged design. Beyond this,
it is protected against damage in the event of impacts or dropping
by means of a soft rubber cover with tilt stand. The rubber
material also assures that the instrument does not wander if it is
set up on a vibrating surface.
Applicable Regulations and Standards
IEC/EN 61010-1:2001
VDE 0411-1:2002
EN 60529
VDE 0470, Part 1
DIN EN 61326
VDE 0843 Part 20
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10/METRAHit
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10/METRAHit
10/METRAHit
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Safety requirements for electrical equipment for
measurement, control and laboratory use
Test instruments and test procedures
Protecti on provided by enclosures (IP code)
Electrical equipment for measurement, control and
laboratory use – EMC requirements
Software Option
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(software option):
software (see above figure) is
Upper limit
140,9°F
Upper limit
140,9°F
GOSSEN METRAWATT GMBH
Alert ON
Alert ON
Lower limit
136,2°F
Lower limit
136,2°F
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98, NT,