Gossen MetraWatt MetraHit 28s User manual

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
METRAHitâ28S 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
(METRAHitâ29S: 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 METRAwinâ10/METRAHitâ(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
METRAHitâ28S 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.
METRAHitâ28S 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
•AUTOSELECT
automatic measured quantity recognition (V, Ωand F)
METRAHitâ29S
• 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

METRA 28S and 29S
Precision Digital Multimeter, Power Meter
2GOSSEN-METRAWATT GMBH
Automatic Blocking System (ABS) *
Automatic blocking of connector sockets prevents incorrect con-
nection of measurement cables, and selection of incorrect mea-
suring quantities. Thus hazards for the operator, the instrument
and the system are substantially reduced, and in many cases
entirely eliminated.
AutomaticMeasurement Value Storage *
The DATA HOLD function allows for storage of the digitally dis-
played measurement value. A patented process assures that the
actual measurement value, and not random values, are stored
when rapid measurement magnitude changes occur. The stored
measurement value appears at the digital display.
* Protected by patent
Sampling Rate
The sampling rate determines the time interval after which the
respective measurement value is transmitted to the interface, or
saved to measurement value memory.
Depending upon the measured quantity, sampling rates can be
set in steps of 1, 2 or 5 from 0.05 s to 10 min.
Additional Functions, METRAHitâ29S
Power Measurement
The METRAHitâ29S is a compact high performance measure-
ment instrument for direct and alternating current for single and
three-phase current measurements. The current path can be con-
nected directly, or with a clip-on current transformer. If a current
transformer is connected to the multimeter (mA or A input), all
current and power displays appear with the correct value in
accordance with the selected transformation ratio. The utilized
current transformer must have a transformation ratio of 1000:1 or
10,000:1.
Universal power measuring functions include the measurement of
active, reactive, and apparent power, as well as power factor and
energy .
Furthermore, mean and peak values (e.g. a 15 minute max. value)
can be measured during a predefined period of time. Type
WZ12D, Z3511, Z3512 and Z3514 current clips are suitable for
use with the instrument.
Power Disturbance Recording
The instrument is capable of continuously recording line voltage
and power disturbances. The following power disturbances can
be acquired: violation of predetermined limit values, power failure
and positive or negative pulses. Each of these events is stored to
memory and can be queried at a later point in time. The type of
event, the time of its occurrence and its duration (except for
pulses) are displayed.
If memory mode is deactivated, approximately 250 events can be
stored to volatile memory and read out at the display.
These data remain in storage until the instrument is switched to a
different operating mode.
If memory mode is activated, the events are recorded at the instru-
ment as a non-compressed data file which is uploaded to a PC at
a later point in time.
Memory Mode
The instrument is equipped with a 128 kB measurement value
memory which is synchronized with a quartz movement, and
which has room for 13,000 to 60,000 measurement values
depending upon configuration. Data can be stored to intermedi-
ate memory or uploaded directly to a PC. The system records
data relative to real-time which allows for use as a real time data
logger.
Depending upon the measured quantity, sampling rates can be
adjusted in steps of 1, 2 or 5 within a range of 0.5 ms to 10 min.
Selected measurement values can also be stored to memory by
pressing a key.
The contents of the memory can be read out with the help of a
PC which has been connected to the multimeter via the
METRAHitâBD232 IR adapter, and with METRAwinâ10/
METRAHitâanalysis software.
Applicable Regulations and Standards
Standard Equipment
1 Multimeter
1 Protective case for operation under adverse conditions.
A cover made of pliable rubber including support bar protects
the device from damage due to impacts and falls. The rubber
material assures a secure stance for the instrument even on
vibrating surfaces.
1 KS17 cable set
2 Batteries
1 Operating Instructions
1 DKD calibration certificate
Guarantee
3 years material and workmanship
1 ... 3 years (depending on application) for calibration
IEC 61010-1
DIN EN 61010 Part 1
VDE 0411-1
Safety regulations for electrical measurement, control,
regulating and laboratory devices
DIN 43751 Digital measuring instruments
DIN EN 50081 Part 1 Generic standard for interference emission;
residential, business and light industry
DIN EN 50082 Part 1 Generic standard for interference immunity;
residential, business and light industry
VDI/VDE 3540 Reliability of measurement, control and regulating devices
DINEN60529
DIN VDE 0470 Part 1 Test instruments and procedures – level of protection provided by enclosures (IP code)

GOSSEN-METRAWATT GMBH 3
METRA 28S and 29S
Precision Digital Multimeter, Power Meter
METRAHitâ28S and 29S Characteristic Values
1) Display: 5¾ places for DC, 4¾ places for AC,
other resolution and sampling rates can be selected for storage and transmission
in the rAtE menu.
2) Stopwatch; format: mm:ss:hh,
where m=minute, s=second and h=hundredth second, max.: 99:59:59
3) Lowest measurable frequency
with sinusoidal measurement signal symmetric to zero point
4) at 0 °... + 40 °C
5) Values < 100 digits are suppressed, 16 ... 45 ... 65 Hz ... 100 kHz sine.
See page 4 for influences.
6) 12 A – 5 min, 16 A – 30 s
7) ZERO is displayed when the “Zero Balancing” function is active.
8) Range 300mV : UE=50mV
eff/rms . . . 300mVeff/rms
3V :U
E=0,3V eff/rms . . . 3 Veff/rms
30 V : UE=3V
eff/rms . . . 30 Veff/rms
300 V : UE=30V
eff/rms . . . 300 Veff/rms
1000 V : UE=300 V
eff/rms . . . 1000 Veff/rms
for voltages > 100 V: power limiting at 3 · 106V · Hz
9) Plus sensor deviation
10)Without integrated reference junction:
inherent deviation ±2K
11)For U > 10% of the measuring range
Key: D = Digit
Meas.
Function Measuring Range Resolution at
Measuring Range Upper Limit Input Impedance Inherent Deviation at highest resolution
under reference conditions Overload Capacity
4) Meas.
Function
±(...% of rdg. + ... %
of range + ... D) ±(...% of rdg. . + ... D)
300000 1) 30000 1) 3000 1) ——5) Value Duration
V
300 mV 1 µV10µV>20MΩ5MΩ// < 50 pF 0.02 + 0.005 + 5 10) 0.5 + 30 1050 V
DC
AC
eff
sine
cont. V
3V 10µV100µV11MΩ5MΩ// < 50 pF 0.02 + 0.005 + 5 0.2 + 30
30 V 100 µV1mV 10MΩ5MΩ// < 50 pF 0.02 + 0.005 + 5 0.2 + 30
300 V 1mV 10mV 10M
Ω5MΩ// < 50 pF 0.02 + 0.005 + 5 0.2 + 30
1000 V 10 mV 100 mV 10 MΩ5MΩ// < 50 pF 0.02 + 0.005 + 5 0.2 + 30
dB see table following page — same as V — ±0.1 dB 11) dB
Volt. Drop, approx. for upper range limit B
——5)
A
300 µA 1 nA 10 nA 160 mV 160 mV 0.05 + 0.02 + 5 0.5 + 30
0.36 A cont. A
3 mA 10 nA 100 nA 160 mV 160 mV 0.05 + 0.01 + 5 0.5 + 30
20 mA
30 mA 100 nA 1 µA 170 mV 170 mV 0.02 + 0.01 + 5 0.5 + 30
0.05 + 0.01 + 5
300 mA 1 µA10µA 300 mV 300 mV 0.1 + 0.01 + 5 0.5 + 30
3A 100
µA 110 mV 110 mV 0.2 + 0.05 + 5 0.5 + 30 10 A 6) cont.
10 A 1 mA 350 mV 350 mV 0.2 + 0.05 + 5 0.5 + 30
Open-circuit voltage Measuring current
at upper ranger limit ±(...% of rdg. + ... % of range + ... D)
Ω
300 Ω1mΩ0.6 V max. 250 µA 0.05 + 0.01 + 5 7)
500 V
DC
AC
eff
sine
10 min
Ω
3kΩ10mΩ0.6 V max. 45 µA 0.05 + 0.01 + 5 7)
30 kΩ100mΩ0.6 V max. 4.5 µA 0.05 + 0.01 + 5
300 kΩ1Ω0.6 V max. 1.5 µA 0.05 + 0.02 + 5
3M
Ω10 Ω0.6 V max. 150 nA 0.1 + 0.02 + 5
30 MΩ100 Ω0.6 V max. 15 nA 1 + 0.2 + 5
Ω300 Ω0.1 Ωmax. 3 V max. 1 mA 1 + 0 + 3 Ω
300 mV 100 µV max. 3 V max. 1 mA 0.2 + 0 + 3
3V 100µV max. 3 V max. 1 mA 0.2 + 0 + 3
Discharge resistor U0 max ±(...% of rdg. + ... % of range)
F
3nF 1pF 10MΩ3 V 1.0 + 0.2 7)
500 V
DC
AC
eff
sine
10 min F
30 nF 10 pF 10 MΩ3 V 1.0 + 0.2 7)
300 nF 100 pF 1 MΩ3 V 1.0 + 0.2
3µF 1 nF 100 kΩ3 V 1.0 + 0.2
30 µF10nF11kΩ3 V 1.0 +0.2
300 µF 100 nF 2 kΩ3 V 5.0 + 1
3000 µF1µF2kΩ3 V 5.0 + 1
30000 µF1µF2kΩ3 V 5.0 + 1
fmin 3) ±(...% of rdg. + ...D)
Hz
300.000 Hz 0.001Hz 1 Hz 0.05 + 1 8) 1000 V
cont. Hz
3.00000 kHz 0.01 Hz 1 Hz 0.05 + 1 8) 1000 V
300.000 kHz 1 Hz 1 Hz 0.05 + 1 8) 300 V
30 V
100 min 2) 10 ms ±15 D DC1000V
AC 750V
±(...% of rdg. + ... D)
°C/°F
Pt 100/
Pt 1000
– 200.0 ...
+100.0 °C0.1 °C0.5K+39) 500 V
DC
eff
sine 10 min °C/°F
+ 100.0 ...
+850.0 °C0.2% + 3 9)
K
NiCr-Ni – 270.0 ... +1372.0 °C0.1 °C 0.7 + 3 9. 10) 1050 V
DC
eff
sine
J
Fe-CuNi – 210.0 ... +1200.0 °C0.1 °C 0.8 + 3 9. 10)

METRA 28S and 29S
Precision Digital Multimeter, Power Meter
4GOSSEN-METRAWATT GMBH
dB Ranges
AUTO SELECT
Automatic Measurement Magnitude Recognition
Power Measurements with METRAHitâ29S
Inherent Deviation and FrequencyInfluence
for Powerand Energy Measurements with METRAHitâ29S
System Monitoring with METRAHitâ29S
* Settings adjusted with trigger parameters
Real-Time Clock
Accuracy ±1min/month
Temperature Effect 50 ppm/K
Influence Variables and Errors
1) With zero balancing
2) Indicated error applies as of display of 10% of measurement value
Measuring
Ranges Display Range at Reference Voltage
UREF = 0,775 V
Resolution
300mV
3V
30 V
300 V
1000 V
– 48 dB ... – 8 dB
– 38 dB ...+ 12dB
– 18 dB ...+ 32 dB
+ 2 dB ...+ 52 dB
+ 22 dB ...+ 63 dB
0.01 dB
0.01 dB
0.01 dB
0.01 dB
0.01 dB
0.01 dB
Display (dB) =
20 lg Ux(V) /UREF
Meas. Quantity Measuring Range
for Recognition Condition Recogni-
tion Time
Voltage V Veff > 0.81 V . . . 500 V — 1 s
Voltage V Veff > 1 V . . . 500 V frequency > 20 Hz 1 s
Resistance 0 Ω. . . 15 MΩ—1s
Capacitance > 1.5 nF . . . 300 µFElectrolytic capacitor must
be correctly connected 1 s
Diode voltage in forward direction
max. 1 V Diode must becorrectly connected: anode to 1 s
Meas.
Function Measuring Range Selector Switch Posi-
tion
Resolution at
Meas. Range
Upper Limit
Overload Capacity
at 0 ... + 40 °C
mA A 10 000 Value Duration
W, VAr, VA
1mW  0.1 µW
V: 1050 V
mA: 0.36 A
A: 10 A
DC
AC
eff
sine
V / mA:
continuously
10 A: cont.
12 A: 5 min
16 A: 30 s
10 mW  1µW
100 mW
 10 µW
1W
 0.1 mW
10 W
 1mW
100 W
 10 mW
1kW
 0.1 W
10 kW
 1W
Meas. Quantity Meas. Range Inherent Deviation ( ... % of rdg + ... D)
15 Hz ... 45 Hz 45 Hz ... 65 Hz 65 Hz ... 1 kHz
Active power 300 mA ... 10 A 1.3+20 1+20 3+20
Reactive power 2.5+20 1.5+20 3+20
Apparent power 1.2+20 1+20 1.2+20
Power factor ±(0.02 ... 1) 2+2 1+2 2+2
¼ hr. power 1.2+20 1+20 1.3+20
Energy 1.2+2 1+2 1.3+2
Voltage 0.4+30 0.3+30 0.4+30
Current 0.7+30 0.6+30 0.9+30
Interference
Type Meas. Range Resolution Inherent Deviation at Highest Resolution under
Reference Conditions
Pulse
Duration
Dropout* 300 V 4 V 5% of rdg + 5% v. B Sampling rate:
2 ms
1000 V 40 V 10% of rdg + 10% v. B
Pulse 200 ... 1000 V 10 V 50 V 0.5 ... 5 µs
Influence
Variable Sphere of Influence Meas. Quantity / Meas. Range 1) Influence Error
ppm/K
Temperature 0°C ...
+21 °C
and
+25 °C ... +40 °C
V30
V50
300 µA ... 30 mA + 180
300 mA + 290
3 A / 10 A + 200
300 Ω... 300 kΩ100
3M
Ω200
30 MΩ1000
3 nF ... 30 µF 500
Hz 50
°C 100
Influence
Variable Frequency Meas. Quantity /
Meas. Range 1) Influence Error 2)
±... % of rdg.
Frequency
VAC
> 15 Hz ... 45 Hz
300.000 mV
2 + 10 D
>65Hz... 1kHz 0.5
> 1 kHz ... 10 kHz 1
> 10 kHz ... 50 kHz 2
> 50 kHz ... 100 kHz 10
> 15 Hz ... 45 Hz 3.00000 V
30.0000 V
300.000 V
2 + 10 D
>65Hz... 1kHz 0.5
> 1 kHz ... 20 kHz 1.5
> 20 kHz ... 100 kHz 2
> 15 Hz ... 45 Hz 1000.00 V 2 + 10 D
>65Hz... 1kHz 1
> 1 kHz ... 10 kHz 10
Influence
Variable Frequency Meas. Quantity /
Meas. Range 1) Influence Error
±(... % of rdg. +... D)
Frequency
IAC
> 15 Hz ... 45 Hz 300.00 µA
...
10.000 A
2 + 10
>65Hz... 5kHz 0.75+5
> 5 kHz ... 10 kHz 5 + 5

GOSSEN-METRAWATT GMBH 5
METRA 28S and 29S
Precision Digital Multimeter, Power Meter
1) With zero balancing
2) Except for sinusoidal waveshape
Reference Conditions
Ambient Temperature +23 °C ±2K
Relative Humidity 45 ... 55%
Meas. Quantity
Frequency 45 ... 65 Hz
Meas. Quantity
Waveform sine
Battery Voltage 3 V ±0.1 V
Adapter Voltage 4.5 V ±0.2 V
Response Time
Response Time (after manual range selection)
Power Supply
Battery 2 ea. 1.5 V mignon cell
alkali manganese cell per IEC LR6
zinc carbon battery per IEC R6
Service Life with alkali manganese cell:
approx. 100 hr.
with zinc carbon battery:
approx. 50 hr.
Battery Test automatic display of “”symbol
when battery voltage drops below
approx. 2.3 V
Economy Circuit
The instrument is switched off automatically, if the measurement
value remains unchanged for about 10 minutes, and if no activa-
tion of the operating elements occurs during this time. This func-
tion can be deactivated. This does not apply to the following func-
tions: events counting, counting of zero crossings, stopwatch,
power measurement, power disturbance recording, transmission
and menu modes, and “continuous on”.
Ambient Conditions
Operating Temperature −20 °C ... +50 °C
Storage Temperature −25 °C ... +70 °C (without batteries)
Relative Humidity max. 75%, without condensation
Climatic Category 2z/−20/50/70/75%
in compliance with VDI/VDE 3540
Elevation to 2000 m
Mechanical Design
Protection Devices: IP 50,
Connector jacks: IP 20
Dimensions 84 mm x 195 mm x 35 mm
Weight METRAHitâ28S: approx. 350 gr.
with batteries
METRAHitâ29S: approx. 405 gr.
with batteries
Influence
Variable Sphere of Influence Meas. Quantity / Meas. Range 1) Influence Error 2)
Measuring
Quantity
Waveform
Crest
factor CF 1 ... 3 V,A ±1 % of rdg.
> 3 ... 5 ±3 % of rdg.
Influence
Variable Sphere of Influence Meas. Quantity / Meas. Range 1) Influence Error
Relative
Humidity
75 %
3 days
instrument OFF
V, A, Ω
F, Hz
°C1 x inherent deviation
Influence
Variable Sphere of Influence Meas. Range Damping
±dB
Common Mode
Interference
Voltage
Interference magnitude max. 1000 V V > 90 dB
Interference magnitude max. 1000 V
50 Hz, 60 Hz sine
300 mV ...30 V > 80 dB
300 V > 70 dB
1000 V > 60 dB
Series Mode
Interference
Voltage
Interference magnitude V ,
per nominal measuring range value,
max. 1000 V , 50 Hz, 60 Hz sine V>60dB
Interference magnitudemax. 1000 V V > 60 dB
1
2
3
4
5CF
010000 3000020000
Voltage and Current Measurement
The allowable crest factor, CF, for the alternating magnitude
to be measured is dependent upon the displayed value:
Digit
Meas. Quantity/
Measuring Range Digital Display Response Time Meas. Quantity Step Function
V,V,
A,A 1.5 s from 0 to 80 % of
measuring range upper limit
300 Ω... 3 MΩ2s
from ∞to 50 % of
measuring range upper limit
30 MΩ5s
Continuity < 50 ms
1.5 s
3 nF ... 300 µFmax.2s
from 0 to 50 % of
measuring range upper limit
3 000 µFmax.7s
30 000 µFmax.14s
>10Hz max.1.5s
°Cmax.3s

METRA 28S and 29S
Precision Digital Multimeter, Power Meter
6GOSSEN-METRAWATT GMBH
Display
LCD display field (65 mm x 30 mm) with display of max. 3 mea-
surement values, unit of measure, current type and various spe-
cial functions.
Display/Character Height 7 segment characters
main display: 12 mm
auxiliary displays: 7 mm
Number of Places 5¾places 309999 steps
Overflow Display “OL”appears in display
Polarity Display “–” sign is displayed when plus
pole is connected to “⊥”jack
Defective Fuse “FUSE”appears in display
Digital Display Symbols
1 Main display with decimal point and polarity display
2 Auxiliary displays with decimal point and polarity display
3 Unit of measure
4 Selected current type
5 Continuous operation, symbol blinks for data transmission
6 Low battery
7 Acoustic signal on, buzzer sounds for corresponding function
8 Zero balancing
9 Reference value
10 Display memory, “save measurement value”
11 Stopwatch on, or elapsed time since start of measurement
12 Together with symbol 11:
Elapsed time since activation of corresponding function, counter,
number of events if trigger threshold is exceeded
13 MIN/MAX storage
14 Event duration
15 Synchronized storage, METRAHitâ29S only
16 Memory mode, METRAHitâ29S only
17 Manual measuring range selection
18 Relative value
19 Measurement with (clip-on) current transformer is active:
Transformation ratio of 1000:1 or 10000:1 is taken into consideration.
Display Refresh
V (DC, AC+DC), A, Ω,
, EVENTS AC+DC,
Count 2 per second
V AC, EVENTS AC 1 per second
W, VA, VAr, Wh 1 v second
Hz, °C (Pt100/1000) 1 to 2 per second
°C (J ,K) 0,5 per second
Fusing
Fuse for ranges
up to 300 mA FF (UR) 1.6 A / 1000 V AC/DC;
6.3 mm x 32 mm;
10 kA switching capacity
at 1000 V AC/DC with resistive load;
protects all current measuring ranges
up to 300 mA in combination
with power diodes
up to 10 A FF (UR) 16 A / 1000 VAC/DC; 10 mm
x 38 mm; 30 kA switching capacity at
1000 VAC/DC with resistive load;
protects 3 A and 10 A ranges
Electrical Safety
Protection Class II per IEC 61010-1/EN 61010-1/
VDE 0411-1
Overvoltage
Category II III
Operating Voltage 1000 V 600 V
Contamination Level 2 2
Test Voltage 5.55 kV~ per IEC 61010-1/
EN 61010-1/VDE 0411-1
Electromagnetic Compatibility, EMC
Interference Emission EN 50081-1: 1992 /
EN 55022: 1987 Class B
Interference Immunity EN 50082-1: 1992 /
IEC 801-2: 1991
8 kV atmospheric discharge /
IEC 801-3: 1984 3 V/m /
IEC 801-4: 1988 0.5 kV
Data Interface
Data Transmission Optical transmission through housing
with infrared light
With accessory interface adapter
Type RS232C, serial, per DIN 19241
Baud Rate METRAHitâSI232-II: all baud rates
METRAHitâBD232: 9600 bauds
1
2
64
3
7
5
141517 16
13121098 11
18
19

GOSSEN-METRAWATT GMBH 7
METRA 28S and 29S
Precision Digital Multimeter, Power Meter
Accessories
Ever-Ready Case F836
for multimeters (without protective rubber cover) and accessories
METRAHitâBD232 Interface Adapter
Parameters can be configured for METRAHitâ28S and 29S multi-
meters, and measurement data can be uploaded to a PC with the
METRAHitâBD232 bidirectional adapter. The adapter is not itself
equipped with a memory, but it can be used to read out data from
the memory at the METRAHitâ29S.
It supports all measuring functions and data formats available
with the METRAHitâ20 series, and is included in the user-friendly
BD Pack 1.
METRAHitâSI232-II Memory Adapter (for METRAHitâ28S)
The METRAHitâSI232-II memory adapter can be attached to the
METRAHitâ28S hand-held multimeter and allows for on-site
storage of measurement data without the use of a PC, and
uploading to a PC at a later point in time. Data are synchronized
with an integrated clock. The data format is limited to a maximum
of 30,000 digits for storage to memory.
Memory:
128 kB (Equivalent to approx. 100,000 measurement values. Can be
increased by a factor of 10 to 20 if data compression is used.)
Adjustable Sampling Rate:
50 ms ... 1 min
METRAwinâ10/METRAHitâSoftware
METRAwinâ10/METRAHitâsoftware (runs under WINDOWS
3.11 or higher) provides for the processing and representation of
measurement data at the PC. Sampling in the on-line mode can
be accomplished manually with the adjustable sampling interval,
or signal dependent (with adjustable signal hysteresis). Storage in
ASCII format is controlled with twotrigger thresholds per channel,
as well as via system time.
Data Logger (1)
Acquired measurement data from up to 10 channels are dis-
played at the monitor in an easy to read table in numeric format.
Multimeter (2)
Transmitted measurement data from up to 4 freely selectable
channels appear at the monitor in digital format with an additional
analog scale display in online operation, or as an analog pointer
instrument with optional digital display.
Y(t) Recorder (3)
Recorded measurement values from up to 4 freely selectable
channels are displayed as a line diagram at the monitor with a
horizontal time axis, and are measured off with two cursors.
Stored signals can be zoomed in or out along the amplitude and
time axes. The time scale can be displayed in absolute clock time
or relative measuring time.
XY Recorder (4)
Recorded data from 2 to 4 freely selectable channels are dis-
played at the monitor as an XY graph and are measured off with
the cursor. As is also the case with all other display formats, all of
the scales are freely adjustable.
High performance arithmetic functions allow for both off-line and
online analysis, linking and graphic representation of measure-
ment data.
Sampling (on-line)
On-line sampling is accomplished manually (mouse click), auto-
matically with an adjustable interval (50 ms ... 60 min) or signal-
dependent with adjustable signal hysteresis (0 ... 500 digits). Data
can be controlled with timing or trigger windows, and automati-
cally stored as multiple data files.
Measurement Data Processing
Measurement data can be processed by means of computing
and linearization functions. For example, mA signals from sensors
or transducers can be directly represented as pressure values, as
active power, or in many other units of measure.
Carrying Case F829
for multimeters (with or
without protective rubber
cover GH18) or accessories
1
2
3
4

Printed in Germany •Subject to change without notice
METRA 28S and 29S
Precision Digital Multimeter, Power Meter
GOSSEN-METRAWATT GMBH
Thomas-Mann-Str. 16-20
90471 Nuremberg, Germany
Phone [phone]
Fax [phone]
e-mail: [e-mail]
http://www.gmc-instruments.com
Order Information
1) For METRAHitâ28S (with limited functionality)
2) Highly recommended for METRAHitâ29S
D) Data sheet available
Please refer to our Measuring Instruments and Testers Catalog
for additional information concerning accessories..
An overview of all multimeters from the METRAHitâseries
is included in the METRAHitâand METRAwinâbrochures.
Designation Type ID Number
Precision digital multimeter
including KS17 cable set, battery,
GH18 and DKD calibration certificate METRAHitâ28S D) M228A
Precision digital multimeter and power
meter incl. KS17 cable set, battery, GH18
and DKD calibration certificate METRAHitâ29S D) M229A
Accessories
Power pack 230 V~/4,5 V, 600 mA NA4/500 Z218A
Cable set for multimeter KS17 GTY 3620 034 P0002
Safety cable set for power meters KS29 Z229A
Single channel memory pack including:
METRAHitâBD232 bidirectional interface
adapter, cable, METRAwinâ10/
METRAHitâsoftware and installation
instructions BD-Pack 1 2) Z215A
Single channel memory pack including:
METRAHitâSI232-II memory adapter,
cable, METRAwinâ10/METRAHitâ
software and installation instructions 1-CH. Pack 1) GTZ 3231 020 R0001
Four channel memory pack including:
4METRAHitâSI232-IImemoryadapters,
cable, METRAwinâ10/METRAHitâ
software and installation instructions 4-CH. Pack 1) GTZ 3234 020 R0001
Memory adapter for METRAHitâ28S SI232 D) GTZ 3242 020 R0001
Bidirectional interface adapter
for METRAHitâ29S BD232 2) GTZ 3242 100 R0001
Single channel pack including cable,
METRAwinâ10/METRAHitâsoftware
and installation instructions Z3231 GTZ 3231 000 R0001
RS232 interface cable, 2 m,
(included with Z3231) Z3241 GTZ 3241 000 R0001
METRAwinâ10/METRAHitâsoftware
update and installation instructions Z3240 GTZ 3240 000 R0001
Electricsetincluding:F829carryingcase,
WZ11 clip-on current transformer
(15 ... 180 A~, 1 mA/1 A~)
and measuring cables Electric-Set GTZ 3236 000 R0001
Clip-on current transformer
30 mA …150 A, 1000:1
Frequency range 50 …500 Hz
Clip jaw opening:
cable diameter max. 15 mm WZ12D D) Z219D
Clip-on current transformer,
4 …500A~,1mA~/A~
with cable and protective circuit
Clip jaw opening: cablediam.max.30 mm Z3511 GTZ 3511 000 R0001
Clip-on current transformer,
0,5 …1000A~,1mA~/A~
with cable and protective circuit
Clip jaw opening: cablediam.max.54 mm Z3512 GTZ 3512 000 R0001
Clip-on current transformer,
1 …2000 A~, 1 mA~/A~
with cable and protective circuit
Clip jaw opening: cablediam.max.64 mm Z3514 GTZ 3514 000 R0001
Clip-on current/voltage transformer,
active, with battery (service life 30 hr.)
Measuring ranges AC 20 A
Measuring ranges DC 30 A
Frequency range DC ... 20 kHz
Output 10 mV/A
Clip jaw opening:
cable diameter max. 19 mm Z201A 1) Z201A
Clip-on current/voltage transformer,
active, with battery (service life 50 hr.)
Measuring ranges AC 20 A/200 A
Measuring ranges DC 30 A/300 A
Frequency range DC ... 10 kHz
Output 10 mV/A or 1 mV/A
Clip jaw opening:
cable diameter max. 19 mm Z202A 1) Z202A
Clip-on current/voltage transformer,
active, with battery (service life 50 hr.)
Measuring ranges AC 200 A/1000 A
Measuring ranges DC 300 A/1000 A
Frequency range DC ... 10 kHz
Output 1 mV/A
Clip jaw opening:
cable diameter max. 32 mm Z203A 1) Z203A
AmpFLEX current transformer D)
30/300 A; 3 V
300/3000 A; 3 V
1000 A; 1 V
1/10 kA; 1 V
AF033A 1)
AF33A 1)
AF11A 1)
AF101A 1)
Z207A
Z207B
Z207D
Z207C
Energy measurement adapter for
Ferraris meters D) EMA1 Z112A
Pt100 temperature sensor
for surface and immersion
measurements, –40 ... +600 °C Z3409A GTZ 3409 000 R0002
Pt1000 temperature sensor
for measurements in gases
and liquids, –50 ... +220 °C TF220 Z102A
Pt100 oven sensor, –50 ... +550 °C TF550 GTZ 3408 000 R0001
10 adhesive Pt100 temperature
sensors, from –50 .. +550 °C TS-Chipset GTZ 3406 000 R0001
Carrying case F829 GTZ 3301 000 R0003
Ever-ready case F836 GTZ 3302 000 R0001
Ever-ready case for 2 METRAHitâS
with METRAHitâSI232-II and accessories F840 GTZ 3302 001 R0001
Fuse link (10 ea.) FF (UR) 1,6 A /
1000 VAC/DC GTY 3578 136 P0001
Fuse link (10 ea.) FF (UR) 16 A /
1000 VAC/DC GTY 3578 176 P0001
Designation Type ID Number