METRA
28S and 29S
Precision Digital Multimeter, Power Meter
3-348-866-03
5/8.00
GOSSEN-METRAWATT GMBH
-Calibration Certificate
DQS Certified per
DIN EN ISO 9001 Reg. No.1262
QUALITY MANAGEMENT SYSTEM
Applications
METRA
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28S and 29S multimeters are high performance pre-
cision instruments for the lab, service and training.
With a display range of 300,000 digits as well high level accuracy
and long-term stability, they fulfill all calibration and R&D labora-
tory demands. Battery operation allows for on-site precision ser-
vicing and calibration.
Features
Convenient Triple Display
The current measurement value, as well as two other values, are
updated and displayed, e.g. minimum and maximum value. The
usual switching back and forth between display values is no
longer necessary.
Display resolution
for the main display value can
be varied from 4¾ places for AC to 5¾ places for DC
(METRA
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29S: from 2¾ to 5¾ places). The
measurement rate
,
adjustable from 1 ms to 0.5 s, allows for high-speed recorder,
precision data logger and mean value recorder functions with the
help of METRAwin
â
10/METRA
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(optional PC software).
High Resolution and Precision
5¾ places, or 309,999 digits, allow for cost effective calibration of
tested devices and components, as well as precise reference
measurements.
Effective Value for Distorted Waveforms
The implemented measurement process provides for effective
value measurement (TRMS) independent of the waveform up to
100 kHz.
Additional Functions
Continuity testing with acoustic signal, event counting (number of
events and event durations), counts zero crossings, stopwatch,
data comparison and wide-range capacitance measurement. The
integrated temperature measurement function allows for the con-
nection of thermocouples and platinum resistance thermometers.
Overload Protection
The instrument is protected from overload in the voltage range.
Acoustic signalling occurs if measuring range limits are exceeded.
The FUSE display indicates a defective fuse in the current range.
Calibration
METRA
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28S and 29S multimeters are shipped with a
DKD calibration certificate. They can be automatically calibrated
with the CS92E calibration system via the RS232 data interface.
Infrared Measurement Data Transmission *
These devices include a serial, duplex data interface for remote
control and measurement value transmission via infrared light.
METRA
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28S and 29S
•
300,000 digits and triple display
•
Precision multimeter (V, dB, A,
Ω
, F, Hz, F, °C/°F)
•
Current measurement with (clip-on) current transformer:
a transformation ratio of 1000:1 or 10000:1
is utilized for display purposes
•
Integrated quartz movement
for recording of MIN/MAX values relative to real-time
•
AUTO SELECT
automatic measured quantity recognition (V,
Ω
and F)
METRA
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29S
•
Power and energy measurements (W, VAr, VA, Wh, PF)
with analog signals or energy measurement with pulses,
current measurement value, mean values and peak
power values are displayed
•
Power disturbances recording
•
Large, 128 kB measurement value memory
