GOSSEN METRAWATT METRAHIT X-TRA, METRAHIT PRO, METRAHIT BASE User Manual
METRAHIT⏐X-TRA⏐PRO⏐BASE
TRMS Digital Multimeters
• Digital Hand-Held Multimeter with RMS Measurement
V
• 4½-place display (11,999 digits), with display illumination
• DKD calibration certificate
METRAHIT⏐BASE
• Current measurement via clip-on current sensor:
The transformation ratio is adjustable from 1 mV:1 mA to 1
mV:1 A, and is accounted for by the display.
METRAHIT⏐X-
• Additional “low-resistance” (1 MΩ) alternating voltage measurement
• 1 kHz / -3 dB low-pass filter can be activated
• Direct current measurement from 10 nA to 10 A, and 16 A for
short periods
METRAHIT⏐X-TRA
• Temperature measurement with Pt100(0) resistance thermometer
• Broad range capacitance measurement
• Frequency and keying ratio measurement at 2 to 5 V signals or up
to 1 MHz
• Data memory and internal clock, power pack adapter socket
• Bidirectional infrared interface for exchanging data with a PC
AC TRMS
, V
AC+DC TRMS
TRAand METRAHIT⏐PRO
, VDC, Hz (V), Hz (A), Ω, V , °C/°F (TC)
QUALITY MANAGEMENT SYSTEM
DQS Certified per
DIN EN ISO 9001:2000
reg. no.1262
3-349-350-03
2/3.06
Applications
The multimeter is suitable for universal use in electrical
engineering, electrical installation, laboratory applications,
telecommunication, training etc.
The instrument can be used in the field and is equipped with
internal, mains-independent supply power.
Features
Three Connector Jacks with Automatic Blocking Sockets (ABS) *
All current ranges are implemented via a single connector jack
which prevents any possibility of operator error.
Beyond this, the automatic blocking sockets prevent incorrect
connection of the measurement cables, as well as selection of the
wrong measured quantity. Danger to the user, the instrument and
the device under test resulting from operator error is thus ruled
out.
* Patented (patent no. DE 40 27 801 C2 and US 5,166,599)
Overload Protection
The instrument is safeguarded for up to 1000 V in all measuring
functions by overload protection. Voltages of greater than 1000 V
and current of greater than 10 or 16 A are indicated acoustically.
Dangerous contact voltages are indicated when the 1 kHz lowpass filter is activated.
The FUSE display appears at METRAHIT⏐X-
instruments in order to indicate that the fuse for the current measuring input has blown.
TRA and METRAHIT⏐PRO
RMS Value with Distorted Waveshape
The utilized measuring method allows for waveshape
independent RMS measurement (TRMS AC and AC+DC) for
voltage and current (METRAHIT⏐X-
TRA up to 20 kHz).
Activatable Filter for V AC Measurement
A 1 kHz low-pass filter can be activated if required, for example
when measuring motor voltage at electronic frequency
converters. The input signal is checked by a voltage comparator
for dangerous voltages as long as the low-pass filter is activated.
Measuring 5 V Square-Wave Signals with the METRAHIT⏐X-
TRA
This function makes it possible to test circuits and transmission
cables by measuring the frequency and the keying ratio of pulses
with amplitudes of 2 to 5 V and frequencies of 100 Hz to 1 MHz.
Analog Scale for Quick Trend Display – Bar Graph or Pointer
The analog scale (with additional negative range for zerofrequency quantities) allows for faster recognition of measured
value fluctuation than is possible with a digital display.
The instrument can be switched back and forth between bar
graph and pointer display.
Automatic or Manual Measuring Range Selection
Measured quantities are selected by means of a rotary switch and
a function key. The measuring range is automatically matched to
the measured values. The measuring range can also be selected
and fixed manually with a key.
GMC-I Gossen-Metrawatt GmbH
METRAHIT⏐X-TRA⏐PRO⏐BASE
TRMS Digital Multimeters
Fast Acoustic Continuity Test
Testing for short circuiting and interruption is possible with the
selector switch in the position. The threshold value for
acoustic signaling can be set to 1, 10, 20, 30, 40 or 90 Ω.
Automatic Storage of Measured Values *
The DATA function automatically saves the digitally displayed
measured value after settling in. Acoustic signaling is also used to
indicate whether the new measured value deviates from the initial
reference value by less or more than 0.1% of the measuring
range.
* Patented
Storage of Min-Max Values
Comparable to the slave-pointer function of an analog instrument,
the device saves the highest and lowest measured values after
the MIN/MAX function has been activated or reset. These
extreme values can be queried at the display.
Battery Charging Status – Power Saving Circuit
The battery charging status is indicated by means of four symbols.
The device is switched off automatically if the measured value
remains unchanged for a period of between 10 and 59 minutes
(adjustable), and if none of the controls are activated during this
time.
Automatic shutdown can be deactivated by switching the
instrument to continuous operation.
METRAHIT⏐X-
TRA: The infrared interface can be switched off in the
standby mode.
Protective Cover for Harsh Conditions
The instrument is protected against damage in the event of
impacts or dropping by means of a soft rubber cover with tilt
stand and test probe holder. The rubber material also assures that
the instrument does not wander if it is set up on a vibrating
surface.
Infrared Data Interface with METRAHIT⏐X-
TRA
The device can be remote configured, and momentary and stored
measurement data can be read out via the bidirectional infrared
interface. The USB⏐X-TRA interface adapter and METRA⏐VIEW
software are required to this end (see accessories). Interface
protocol and device driver software for LabVIEW
®
(National
Instruments™) are available upon request.
Selection List
Function
V AC / Hz
(Ri = 10 MΩ) TRMS
V AC (Ri = 1 MΩ)
TRMS
V AC+DC (Ri = 10 MΩ)
TRMS
V DC (Ri = 10 MΩ)
... 1 MHz 5 V AC
Keying ratio as %
Hz (V AC)
Bandwidth, V AC
A AC / Hz
A AC+DC TRMS
A DC
Fuses
A AC / Hz
A AC+DC
A DC
Hz (A AC)
Clip factor
Resistance Ω
Continuity
Diode ... 5.1 V
Temperature TC (K)
Temperature RTD
Capacitance
Min-Max / data hold
4 MBit memory
IR Interface
Power pack adapter
socket
Protection
Measuring category
1)
2)
TRMS
1 )
Ri = 1 M
For 15,400 measured values, sampling rate adjustable from 0.1 second to 9 hours
IP 65 in preparation
TRMS
TRMS
1)
METRA
HIT⏐X-
TRA
METRAHIT⏐PRO
•
Filter
1kHz 1kHz
•
Filter
1kHz 1kHz
•••
•••
• ——
• ——
... 100 kHz ... 100 kHz ... 100 kHz
15 Hz ... 20 kHz 15 Hz ... 10 kHz 15 Hz ... 1 kHz
100 μA
1/10/100 mA
1 A / 10 (16) A
10 A / 1000 V 10 A / 1000 V —
1)
1)
Ω
—— •
—— •
—— •
... 30 kHz ... 30 kHz ... 30 kHz
—— •
•••
•••
•••
•••
• ——
• ——
•••
• ——
• ——
• ——
2)
IP 52
1000 V CAT III
600 V CAT IV
•
•
1 A / 10 (16) A
IP 52
1000 V CAT III
600 V CAT IV
METRA
Filter
Filter
2)
HIT⏐B
•
—
—
—
—
IP 52
1000 V CAT II I
600 V CAT IV
Included
ASE
DKD Calibration Certificate
The multimeters are furnished with an internationally valid DKD
calibration certificate (recognized by EA and ILAC). A
fter the
specified calibration interval has elapsed (recommended interval:
1 to 3 years), the multimeters can be inexpensively recalibrated in
our own DKD calibration laboratory.
1multimeter
1
pair of safety measurement cables (1.5 m) with 4 mm test
probes,
1000 V CAT III, 600 V CAT IV (KS17-2)
2 batteries, 1.5 V, type AA
1 condensed operating instructions, English/German
1 CD ROM (operating instructions in English and German),
METRA⏐V
IEW demo software in preparation
1 DKD calibration certificate
Applicable Regulations and Standards
IEC/EN 61010, part
1:2001/VDE 0411-1:2002
DIN EN 61326
VDE 0843, part 20
DIN EN 60529
DIN VDE 0470, part 1
2 GMC-I Gossen-Metrawatt GmbH
Safety requirements for electrical equipment for
measurement, control and laboratory use
Electrical equipment for control technology and laboratory use
– EMC requirements
Test instruments and test procedures
– degrees of protection provided by enclosures (IP code)
1 protective rubber cover (METRA HIT⏐X-
TRA only)
Voluntary Manufacturer’s Guarantee
24 months for materials and workmanship
1 to 3 years for calibration (depending upon application)
Characteristic Values
⏐
METRAHIT⏐X-TRA⏐PRO⏐BASE
TRMS Digital Multimeters
Resolution at Upper
Meas.
Function
Hz (A )
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
Measuring Range
100 mV 10 μV11MΩ 11 MΩ // < 50 pF 0.09 + 5 with ZERO 1 + 30 (> 300 d) 1)1 + 30 (> 300 d)
1 V 100 μV11MΩ 11 MΩ // < 50 pF 0.05 + 3 0.5 + 9 (> 200 d) 1 + 30 (> 300 d)
V
A
X-TRA
PRO
A
BASE
Ω
F
TRA
X-
Hz (V)
Hz (A)
Hz (V)
Hz (A)
MHz
X-
TRA
%
X-
TRA
°C/°F
Values of less than 200 digits are suppressed in the mV range.
15 (20) ... 45 ... 65 Hz
At 0° ... + 40° C
Displays up to max. 5.1 V, “OL” in excess of 5.1 V.
Applies to measurements at film capacitors
Lowest measurable frequency for sinusoidal measuring signals symmetrical to the zero point
Overload capacity of the voltage measurement input:
power limiting: frequency x voltage max. 3 x 10
Overload capacity of the current measurement input:
See current measuring ranges for maximum current values.
Input sensitivity, sinusoidal signal, 10% to 100% of the measuring range
Plus sensor deviation
Residual value deviates within 1 ... 30 d from the zero point due to TRMS converter when probe tips are short-circuited
10 V 1 mV 10 MΩ 10 MΩ // < 50 pF 0.05 + 3 0.5 + 9 (> 200 d) 1 + 30 (> 300 d)
100 V 10 mV 10 MΩ 10 MΩ // < 50 pF 0.05 + 3 0.5 + 9 (> 200 d) 1 + 30 (> 300 d)
1000 V 100 mV 10 MΩ 10 MΩ // < 50 pF 0.09 + 3 0.5 + 9 (> 200 d) 1 + 30 (> 300 d)
100 μA 10 nA 12 mV 12 mV 0.5 + 5 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d)
1 mA 100 nA 120 mV 120 mV 0.5 + 3 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d)
X-TRA
10 mA 1 μA 16 mV 16 mV 0.5 + 3 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d)
100 mA 10 μA 160 mV 160 mV 0.5 + 3 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d)
1 A 100 μA 40 mV 40 mV 0.9 + 10 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d)
PRO
METRAHIT
10 A 1 mA 600 mV 600 mV 0.9 + 10 1.5 + 10 (> 200 d) 1.5 + 30 (> 200 d)
Factor: 1:1/10/100/1000
0.1/1/10/100 A 100 mV
1/10/100/1000 A 1 V
10/100/1000/10000 A
100 Ω 10 mΩ < 1.4 V Approx. 300 μA0.2 + 5
1kΩ 100 mΩ < 1.4 V Approx. 250 μA0.2 + 5
10 kΩ 1 Ω < 1.4 V Approx. 100 μA0.2 + 5
100 kΩ 10 Ω < 1.4 V Approx. 12 μA0.2 + 5
1MΩ 100 Ω < 1.4 V Approx. 1.2 μA0.2 + 5
10 MΩ 1kΩ < 1.4 V Approx. 125 nA 0.5 + 10
40 MΩ 10 kΩ < 1.4 V Approx. 20 nA 2.0 + 10
100 Ω —0.1Ω Approx. 8 V Approx. 1 mA const. 1 + 5
3)
5,1 V
10 nF 10 pF 10 MΩ 0.7 V 1 + 6
100 nF 100 pF 1 MΩ 0.7 V 1 + 6
1 μF1nF100kΩ 0.7 V 1 + 6
10 μF10nF12kΩ 0.7 V 1 + 6
100 μF100nF3kΩ 0.7 V 5 + 6
1000 μF1μF3kΩ 0.7 V 5 + 6
100.00 Hz 0.01 Hz
1.0000 kHz 0.1 Hz
10.000 kHz 1 Hz
100.00 kHz 10 Hz 10 Hz
30.00 kHz 10 Hz 10 Hz
100 Hz ... 1 MHz 100 Hz 100 Hz 0.05 + 3 > 2 V ... 5 V
2.0 ... 98 % — 0.01% 100 Hz ... 1 kHz 1 Hz 0.1 R > 2 V ... 5 V
5.0 ... 95 % — 0.01% ... 10 kHz 1 Hz 0.1 R > 2 V ... 5 V
10 .... 90 % — 0.01% ... 100 kHz 1 Hz 0.1 R > 2 V ... 5 V
Pt100
– 200.0 ...
X-TRA
+850.0° C
– 150.0 ...
Pt1000
X-TRA
+850.0° C
K
– 250.0 ...
(NiCr-Ni)
+1372.0° C
Range Limit
11,999 1199
Voltage drop, approx. at upper range limit
Input Input impedance
10 V Plus clip-on current sensor error
Open-circuit voltage
— 1 mV Approx. 8 V Approx. 1 mA const. 0.5 + 3
0.1 °C
... 20 (1) kHz sinusoidal. See influence error on page 4.
Input Impedance
~ /
Voltage measurement input approx. 1 MΩ
Discharge resist. U
6
V x Hz for U > 100 V
(V socket)
Meas. current at
range limit
0 max
5)
f
min
1Hz
±(... % rdg. + ... d) ±(... % rdg. + ... d) ±(... % rdg. + ... d)
±(0.5% rdg. + 10 d)
±(... % rdg. + ... d)
±(... % rdg. + ... d)
±(... % rdg. + ... d)
8)
0.05 + 3
±(... % rdg. + ... d)
0.3 + 15
0.3 + 15
1% + 5 K
Key: R = measuring range, d= digit(s), rdg. = measured value
(reading)
Intrinsic Error
under Reference Conditions
10)
~
10)
~
±(1% rdg. + 30 d)
> 300 d
with active ZERO function
4)
with ZERO function active
4)
4)
4)
4)
4)
9)
9)
9)
10)
10)
±(1% rdg. + 30 d)
> 300 d
Overload Capacity
Value Time
1)
1000 V
DC
AC
RMS
sine
6)
0.2 A
10 A: 5 min
16 A: 30 s
Measurement input
1000 V RMS Max. 10 s
1000 V
DC
AC
RMS
sine
1000 V
DC
AC
RMS
sine
Hz (V) 6):
Hz (A )6):
1000 V
7)
Hz (A):
1000 V Max. 10 s
1000 V
DC/AC
RMS
Sine
Continu-
ous
Continu-
ous
Max. 10 s
Max. 10 s
Max. 10 s
Max. 10 s
2)
GMC-I Gossen-Metrawatt GmbH 3
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