Datasheet
METRAHIT⏐EXTRA⏐ETECH⏐ESPECIAL⏐EBASE
TRMS Digital Multimeters
2 GMC-I Gossen-Metrawatt GmbH
Measurement with current clamps and sensors
Current clamps and sensors are used for current measurements 
without interrupting the circuit under test and for high currents 
above 16 Amps. All E series multimeters offer convenient mea-
surement with current clamps. 
The measured current value is automatically calculated for the 
user with the help of the adjustable clamp factor.
Fast Acoustic Continuity Test
Testing for short circuit connection and circuit interruption is pos-
sible with the selector switch in the   position. The threshold 
value for acoustic response can be set to 1, 10, 20 ... 500 Ω in 10 
Ohm steps.
Automatic Storage of Measured Values *
The DATA function automatically saves the digitally displayed mea-
sured value after stabilisation in. Acoustic signaling is also used to 
indicate whether the new measured value deviates from the initial ref-
erence value by less or more than 0.1% of the measuring range.
* Patented
Min-Max Data Storage
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.
The standby mode of the infrared interface can be switched off.
Protective Rubber Holster for Rugged Conditions
The instrument is protected against damage in the event of 
impacts or dropping by means of a soft rubber holster with tilt 
stand and test probe holder. The rubber material also assures that 
the instrument does not slide if it is set up on a vibrating surface.
Infrared Data Interface
The device can be remotely configured, and momentary and 
stored measurement data can be read out via the bidirectional 
infrared interface. The USB X-TRA interface adapter and 
METRAwin10 software are required (see accessories). Interface 
protocol and device driver software for LabVIEW
®
 (National 
Instruments™) are available upon request.
DKD Calibration Certificate
Each multimeter is individually adjusted, subjected to final inspection 
and calibrated. Adherence to the specification is confirmed by means 
of the included DKD calibration certificate, which is valid worldwide 
(recognized by EA and ILAC. If any type of DMM is due to recalibra-
tion 
(recommended intervals: 1 to 3 years) the multimeters can 
inexpensively recalibrated at the factory or at any calibration labo-
ratory.
Applicable Regulations and Standards 
Function Listing 
1)
 Alternating voltage measurement with specially reduced input impedance
2)
8 Mbit = 1024 kByte = 61,600
 measured values, sampling rate adjustable from 0.1 seconds 
to 9 hours 
3)
 IP 65 available with the METRAHIT OUTDOOR model
Included
1 multimeter in HC20 hard case
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, content: operating instructions in English and 
German), METRAwin10 demo software
1 DKD calibration certificate
1 protective rubber holster
Voluntary Manufacturer’s Guarantee
24 months for materials and workmanship
1 to 3 years for calibration (depending upon application) 
IEC/EN 61 010, part 
1:2001/VDE 0411-1:2002
Safety requirements for electrical equipment for 
measurement, control and laboratory use
DIN EN 61326
VDE 0843, part 20
Electrical equipment for control technology and laboratory use 
– EMC requirements
DIN EN 60529
DIN VDE 0470, part 1
Test instruments and test procedures
– degrees of protection provided by enclosures (IP code)
Function EXTRA ETECH ESPECIAL  EBASE
Voltage V
DC
(Ri ≥ 9 MΩ) 
✓✓✓✓
Voltage V
AC
 TRMS
(Ri ≥ 9 MΩ) 
✓✓✓✓
Voltage Lo
1)
V
AC
 TRMS
(Ri = 1 MΩ) 
✓✓✓
—
Voltage V
AC+DC
 TRMS
(Ri ≥ 9 MΩ) 
✓✓✓✓
Frequency Hz @ V
AC 
bzw. 
@ Lo 
1)
 V
AC
... 300 kHz ... 300 kHz ... 300 kHz
... 300 kHz
Low-pass filter 1 kHz @ V
AC
 / @ LoV
AC
—
Bandwidth @ V
AC+DC
 bzw. V
AC
50 kHz 20 kHz 1 kHz
Frequency MHz @ 5V
TTL
0.1 Hz...1 MHz
———
Duty cycle %
2.0 % ... 98 % — — —
Voltage level measurement dB
✓✓✓✓
Resistance Ω
✓✓✓✓
Continuity test
@ICONST = 1 mA
✓✓✓✓
Diode measurement
@I
CONST
= 1 mA
✓✓✓✓
Temperature measurement 
°C/°F @T
C
Typ K
Temperature measurement 
°C/°F R
TD
Pt100/Pt1000 — —
Capacitance measurement F
✓✓
——
Current A
DC
600 
μ
A/6 mA
60 mA/600 mA
6 A/10 A (16 A)
60 mA/600 mA
6 A/10 A (16 A) 
6 A/10 A (16 A)
A
Current A
AC+DC 
TRMS
Current A
AC 
TRMS
Bandwidth @ A
AC+DC
 bzw. A
AC
10 kHz —
Frequency Hz @ A
AC
... 60 kHz —
Measurement with clamp amme-
ter with adjustable transfer factor
mV / A
mA / A
mV / A
A / A
mV / A
—
Data logger function 
2)
(memory)
8 Mbit — — —
Relative value measurement 
Δ
REL
✓✓✓✓
Zero point ZERO
✓✓✓✓
MIN/MAX/DATA Hold
✓✓✓✓
IR-interface (38.4 kBd)
✓✓✓✓
Power pack connector socket
✓
———
Protective rubber holster
✓✓✓✓
Fuse
10 A / 1000 V 10 A / 1000 V — —
Protection 
3)
IP52 IP52 IP52 IP52
Measuring category
1000 V CAT III
600 V CAT IV
600 V CAT II
1000 V CAT III
600 V CAT IV
Calibration
DKD DKD DKD DKD








