User manual

32 GMC-I Gossen-Metrawatt GmbH
Note!
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Testing the Fuse with the Instrument Switched On
After inserting the fuse with the instrument switched on, it
must be switched off briefly and then switched back on
again. If contact is poor or the fuse is blown, FUSE blinks
at the display.
13.4 Housing Maintenance
No special maintenance is required for the housing. Keep outside
surfaces clean. Use a slightly dampened cloth for cleaning. Avoid
the use of cleansers, abrasives or solvents.
13.5 Return and Environmentally Sound Disposal
This calibrator is a category 9 product (monitoring and
control instrument) in accordance with ElektroG (German
electrical and electronic device law). It is not subject to the RoHS
directive.
We identify our electrical and electronic devices (as of
August 2005) in accordance with WEEE 2002/96/EC
and ElektroG using the symbol shown at the right per
DIN EN 50419.
These devices may not be disposed of with the trash. Please
contact our service department regarding the return of old
devices (see section 15).
14 Calibrator Messages
The following messages appear at the main or the auxiliary
displays as required. See page 2 for messages displayed at
visible segments.
Blinking Calibration Unit of Measure
All calibration functions are balanced/adjusted in accordance with
the respective technical specifications at the factory for each
METRAHIT CAL calibrator. If a calibration unit of measure blinks, this
indicates that balancing constants which have been
established and saved to the calibrator are no longer available for
the respective function. If this is the case, results may deviate
from the specification. We recommend sending the instrument to
our Repair and Replacement Parts department for rebalancing
(see section 15).
Message Function Meaning
hiCurr
Simulation of
voltage/pulse
High current = current too high (I > 18 mA)
Simulation of
resistance/RTD
High current = current too high (I > 4.5 mA)
loCurr
Resistance
simulator
Low current = current too low (I < 40 μA)
( indicates that connector jacks are open)
or reversed polarity, e.g. with Pt and Ni sensors
0ut0l
Voltage simulator,
pulse and
frequency
generator
Output overload = limit value violated
(I > 30 mA), 3 acoustic signals are generated
at the same time and the simulator jacks are
deactivated. After eliminating the cause of
overload, the output can once again be
switched on by pressing the ON / OFF | LIGHT
key.
lovolt
Current sink U < 3 V (to little loop voltage)
hiBurd
Current source High burden:
Resistance applied by means of the connected
circuit is too high. Voltage built up at the
calibrator is equal to or greater than 20 V.