Gossen MetraWatt MetraHit 28s, MetraHit 29s User Manual

METRA 28S and 29S
Precision Digital Multimeter, Pow er Meter

3-348-866-03

5/8.00

GOSSEN-METRAWATT GMBH

-Calibration Certificate

DQSCertifiedper

DIN EN ISO 9001 Reg. No.1262

QUALITY MANAGEMENT SYSTEM

Applications

METRAHitâ28S and 29S multimeters are high performance pre­cision 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 labora­tory demands. Battery operation allows for on-site precision ser­vicing 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
(METRAHit

â

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/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 con­nection of thermocouples and platinum resistance thermometers.

Overload Protection

The instrument is protected from overload in the voltage range.
Acoustic signalling occurs if measuring range lim its are exceeded.
The FUSE display indicates a defective fuse in the current range.

Calibration

METRAHit

â

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.

METRAHit

â

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

•AUTOSELECT
automatic measured quantity recognition (V, Ω and F)

METRAHit

â

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

METRA 28S and 29S
Precision Digital Multimeter, Pow er Meter

2 GOSSEN-METRAWATT GMBH

Automatic Blocking System (ABS) *

Automatic blocking of connector sockets prevents incorrect con­nection of measurement cables, and selection of incorrect mea­suring quantities. Thus hazards for the operator, the instrument
and the system are substantially reduced, and in many cases
entirely eliminated.

Automatic Measurement Value Storage *

The DATA HOLD function allows for storage of the digitally dis­played 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 measure­ment instrument for direct and alternating current for single and
three-phase current measurements. The curr ent path can be con­nected 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 mu st have a tran sforma tion ratio of 1000:1 or
10,000:1.
Universal power measuring functions include the mea surement 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 instru­ment 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 intermedi­ate 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
METRAHit

â

BD232 IR adapter, and with METRAwinâ10/

METRAHitâ analysis 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 me asurement, control and reg ulating 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

. . . 300mV

eff/rms

3V :UE=0,3V

eff/rms

. . . 3 V

eff/rms

30 V : UE=3V

eff/rms

. . . 30 V

eff/rms

300 V : UE=30V

eff/rms

. . . 300 V

eff/rms

1000 V : UE=300 V

eff/rms

. . . 1000 V

eff/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>20MΩ 5MΩ // < 50 pF 0.02 + 0.005 + 5

10)

0.5 + 30
1050 V

DC
AC
eff

sine

cont.

V

3V 10µV100µV11MΩ 5MΩ // < 50 pF 0.02 + 0.005 + 5 0.2 + 30

30 V 100

µV1mV 10MΩ 5MΩ // < 50 pF 0.02+ 0.005 + 5 0.2 + 30

300 V 1mV 10mV 10M

Ω 5MΩ // < 50 pF 0.02+ 0.005 + 5 0.2 + 30

1000 V 10 mV 100 mV 10 M

Ω 5MΩ // < 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 Ω 1mΩ 0.6 V max. 250 µA 0.05 + 0.01 + 5

7)

500 V

DC
AC
eff

sine

10 min

Ω

3kΩ 10mΩ 0.6 V max. 45 µA 0.05 + 0.01 +5

7)

30 kΩ 100mΩ 0.6 V max. 4.5 µA 0.05 + 0.01 + 5

300 k

Ω 1 Ω 0.6 V max. 1.5 µA 0.05 + 0.02+ 5

3M

Ω 10 Ω 0.6 V max. 150 nA 0.1 + 0.02 + 5

30 M

Ω 100 Ω 0.6 V max. 15 nA 1 + 0.2 + 5

Ω

300 Ω 0.1 Ω max. 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 U

0 max

±(...% of rdg. + ... % of range)

F

3nF 1pF 10MΩ 3 V 1.0 + 0.2

7)

500 V

DC
AC
eff

sine

10 min

F

30 nF 10 pF 10 MΩ 3 V 1.0 + 0.2

7)

300 nF 100 pF 1 MΩ 3 V 1.0 + 0.2

3

µF 1 nF 100 kΩ 3 V 1.0 + 0.2

30

µF10nF11kΩ 3 V 1.0 +0.2

300

µF 100 nF 2 kΩ 3 V 5.0 + 1

3000

µF1µF2kΩ 3 V 5.0 + 1

30000

µF1µF2kΩ 3 V 5.0 + 1

f

min

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

°C

0.1

°C

0.5K+ 3

9)

500 V

DC
eff

sine

10 min

°C/°F

+ 100.0 ...
+850.0

°C

0.2% + 3

9)

K

NiCr-Ni

– 270.0 ...

+1372.0

°C

0.1

°C 0.7 + 3

9. 10)

1050 V

DC
eff

sine

J

Fe-CuNi

– 210.0 ...

+1200.0

°C

0.1

°C 0.8 + 3

9. 10)

METRA 28S and 29S
Precision Digital Multimeter, Pow er Meter

4 GOSSEN-METRAWATT GMBH

dB Ranges

AUTO SELECT

Automatic Measurement Magnitude Recognition

Power Measurements with METRAHitâ29S

Inherent Deviation and Frequency Influence
for Power and Energy Measurements with METRAHit

â

29S

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

U

REF

= 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 U

x

(V) /U

REF

Meas. Quantity

Measuring Range

for Recognition

Condition

Recogni­tion Time

Voltage V V

eff

> 0.81 V . . . 500 V — 1 s

Voltage V V

eff

> 1 V . . . 500 V frequency > 20 Hz 1 s

Resistance 0

Ω . . . 15 MΩ —1 s

Capacitance > 1.5 nF . . . 300

µF

Electrolytic capacitor must

be correctly connected

1 s

Diode

voltage in forward direction

max. 1 V

Diode must be correctly

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 10000 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



1 µW

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 kΩ 100

3M

Ω 200

30 M

Ω 1000

3 nF ... 30

µF 500

Hz 50

°C 100

Influence

Variable

Frequency

Meas. Quantity /

Meas. Range

1)

Influence Error

2)

± ... % of rdg.

Frequency
V

AC

> 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
I

AC

> 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 ... 65Hz
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 activa­tion of the operating elements occurs during this time. This func­tion can be deactivated. This does not apply to the following func­tions: events counting, counting of zero crossings, stopwatch,
power measurement, power disturbance recording, transmission
and menu modes, and “contin uo us o n ”.

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 METRAHit

â

28S: approx. 350 gr.
with batteries
METRAHit

â

29S: 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

°C

1 x inherent deviation

Influence

Variable

Sphere of Influence Meas. Range

Damping

±dB

Common Mode
Interference
Voltage

Interference magnitude max. 1000V V > 90 dB

Interference magnitude max. 1000V

50 Hz, 60 Hz sine

300 mV ... 30V > 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 , 50Hz, 60 Hz sine

V> 60dB

Interference magnitude max. 1000V V > 60 dB

1

2

3

4

5

CF

0

10000 3000020000

Voltage and Current Measurement

The allowable crest factor, CF , for the alternating magnitude
to be measured is dependent upon th e 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 MΩ 2s

from

∞ to 50 % of

measuring range upper limit

30 M

Ω 5s

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, Pow er Meter

6 GOSSEN-METRAWATT GMBH

Display

LCD display field (65 mm x 30 mm) with display of max. 3 mea­surement values, unit of measure, current type and various spe­cial functions.

Display/Character Height 7 segment characters

main display: 12 mm

auxiliary displays: 7 mm
Number of Places 5¾ places 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, METRAHit

â

29S 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 V AC/DC; 10 mm

x 38 mm; 30 kA switching capacity at
1000 V AC/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 METRAHit

â

SI232-II: all baud rates

METRAHitâBD232: 9600 bauds

1

2

6

4

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

METRAHit

â

BD232 Interface Adapter

Parameters can be configured for M ETRA Hitâ28S and 29S multi­meters, and measurement data can be uploaded to a PC with the
METRAHit

â

BD232 bidirectional adapter. The adapter is not itself
equipped with a memory , but it can be used to read o ut data from
the memory at the METRAHit

â

29S.
It supports all measuring functions and data formats available
with the METRAHit

â

20 series, and is included in the user-friendly

BD Pack 1.

METRAHitâSI232-II Memory Adapter (for METRAHitâ28S)

The METRAHit

â

SI232-II memory adapter can be attached to the

METRAHit

â

28S 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

METRAwin

â

10/METRAHitâ Software

METRAwin

â

10/METRAHitâ software (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 hyster esis). Sto rage in
ASCII format is controlled with two trigg er thresho lds per channel,
as well as via system time.

Data Logger (1)

Acquired measurement data from up to 10 channels are dis­played 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 dis­played 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 measure­ment data.

Sampling (on-line)

On-line sampling is accomplished manually (mouse click), auto­matically with an adjustable interval (50ms ... 60 min) or signal­dependent with adjustable signal hysteresis (0 ... 500 digits). Data
can be controlled with timing or trigger windows, and automati­cally 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 pressur e 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, Pow er 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 METRAHitâ series
is included in the METRAHitâ and METRAwinâ brochures.

Designation Type ID Number

Precision digital multimeter
including KS17 cable set, battery,
GH18 and DKD calibration certificate METRAHit

â

28S D)M228A

Precision digital multimeter and power
meter incl. KS17 cable set, battery, GH18
and DKD calibration certificate METRAHit

â

29S D)M229A

Accessories

Power pack 230 V~/4,5 V, 600mA 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:

METRAHit

â

BD232 bidirectional interface

adapter, cable, METRAwin

â

10/

METRAHit

â

software and installation

instructions BD-Pack 1

2)

Z215A

Single channel memory pack including:
METRAHit

â

SI232-II memory adapter,

cable, METRAwin

â

10/METRAHitâ

software and installation instructions 1-CH. Pack

1)

GTZ 3231 020 R0001

Four channel memory pack including:
4 METRAHit

â

SI232-II memory adapters,

cable, METRAwin

â

10/METRAHitâ

software and installation instructions 4-CH. Pack

1)

GTZ 3234 020 R0001

Memory adapter for METRAHit

â

28S SI232

D)

GTZ 3242 020 R0001

Bidirectional interface adapter
for METRAHit

â

29S BD232

2)

GTZ 3242 100 R0001

Single channel pack including cable,
METRAwin

â

10/METRAHitâ software

and installation instructions Z3231 GTZ 3231 000 R0001
RS232 interface cable, 2 m,

(included with Z3231) Z3241 GTZ 3241 000 R0001
METRAwin

â

10/METRAHitâ software

update and installation instructions Z3240 GTZ 3240 000 R0001
Electric set including: F829 carrying case,

WZ11 clip-on current transformer
(15 ... 180 A~, 1mA/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

: cable diam. max. 30mm Z3511 GTZ 3511 000 R0001

Clip-on current transformer,
0,5

… 1000A~, 1mA~/A~

with cable and protective circuit
Clip jaw opening

: cable diam. max. 54mm Z3512 GTZ 3512 000 R0001

Clip-on current transformer,
1

… 2000 A~, 1 mA~/A~

with cable and protective circuit
Clip jaw opening

: cable diam. max. 64mm Z3514 GTZ 3514 000 R0001

Clip-on current/v oltage 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/v oltage 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/v oltage 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 a nd 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 METRAHit

â

S

with METRAHit

â

SI232-II and accessories F840 GTZ 3302 001 R0001

Fuse link (10 ea.) FF (UR) 1,6 A /

1000 V AC/DC GTY 3578 136 P0001

Fuse link (10 ea.) FF (UR) 16A /

1000 V AC/DC GTY 3578 176 P0001

Designation Type ID Number