Trotec BE50 User manual

TRT-BA-BE50-TC2019-17-001-EN
BE50
EN
OPERATING MANUAL
DIGITAL MULTIMETER

2 EN
digital multimeter BE50
Table of contents
Notes regarding the operating manual.................................2
Safety .....................................................................................2
Information about the device................................................4
Transport and storage...........................................................7
Operation ...............................................................................7
Maintenance and repair ......................................................11
Errors and faults..................................................................12
Disposal ...............................................................................12
Notes regarding the operating manual
Symbols
Warning of electrical voltage
This symbol indicates dangers to the life and health of
persons due to electrical voltage.
Warning
This signal word indicates a hazard with an average
risk level which, if not avoided, can result in serious
injury or death.
Caution
This signal word indicates a hazard with a low risk
level which, if not avoided, can result in minor or
moderate injury.
Note
This signal word indicates important information
(e.g. material damage), but does not indicate hazards.
Info
Information marked with this symbol helps you to carry
out your tasks quickly and safely.
Follow the manual
Information marked with this symbol indicates that the
operating manual must be observed.
You can download the current version of the operating manual
and the EU declaration of conformity via the following link:
BE50
https://hub.trotec.com/?id=39962
Safety
Read this manual carefully before starting or using the
device. Always store the manual in the immediate vicinity
of the device or its site of use!
Warning
Read all safety warnings and all instructions.
Failure to follow the warnings and instructions may
result in electric shock, fire and/ or serious injury.
Save all warnings and instructions for future
reference.
• The device is supplied with a warning sign. Prior to initial
start-up, make sure to paste the corresponding warning
sign in your local language over the one present at the rear
of the device as described in chapter Operation.
• Do not use the device in potentially explosive rooms.
• Do not use the device in aggressive atmosphere.
• Protect the device from permanent direct sunlight.

EN 3
digital multimeter BE50
• Do not remove any safety signs, stickers or labels from the
device. Keep all safety signs, stickers and labels in legible
condition.
• Do not open the device.
• Observe the storage and operating conditions as given in
the Technical data chapter.
Intended use
Only use the multimeter for measuring voltage, current or
resistance whilst adhering to the technical data.
Intended use comprises:
• measurements of AC and DCvoltages
• measurements of direct and alternating currents
• capacitance measurements
• frequency/ duty cycle measurements
• resistance measurements
• temperature measurements using external typeK sensor
• testing diodes
• acoustic continuity tests
The device is dust- and water-proof as per IP67 and
corresponds to the overvoltage categories CATIII(1000V) and
CATIV(600V).
To use the device for its intended use, only use accessories and
spare parts which have been approved by Trotec.
Improper use
Do not use the device in potentially explosive atmospheres,
when wet or very humid.
Unauthorized modifications of the device are forbidden.
Personnel qualifications
People who use this device must:
• master the 5safety rules (1 De-energise, 2 Secure against
restart, 3 Verify de-energised state (bipolar), 4. Earth and
short-circuit, 5 Cover neighbouring live parts).
• use the measuring device in accordance with safe working
procedures.
• be aware of the dangers that occur when working with
electric devices in damp areas.
• take measures to protect themselves from direct contact
with live parts.
• have read and understood the operating manual, especially
the Safety chapter.
Residual risks
Warning of electrical voltage
Electric shock due to insufficient insulation! Check the
device for damages and proper functioning before each
use.
If you detect damages, do not use the device any
longer.
Do not use the device when wither the device or your
hands are damp or wet!
Do not use the device when the battery compartment
or the housing is open.
Warning of electrical voltage
Work on the electrical components must only be
carried out by an electrically skilled person or an
authorised specialist company.
Warning of electrical voltage
Electric shock due to contact with live parts! Do not
touch any live parts. Secure neighbouring live parts by
covering them or by switching them off.
Warning of electrical voltage
Electric shock due to contact with live parts! When
using the measuring tips, make sure not to reach
behind the protection against contact.
Warning
Risk of suffocation!
Do not leave the packaging lying around. Children may
use it as a dangerous toy.
Warning
The device is not a toy and does not belong in the
hands of children.
Warning
Dangers can occur at the device when it is used by
untrained people in an unprofessional or improper way!
Observe the personnel qualifications!
Caution
Keep a sufficient distance from heat sources.
Note
To prevent damages to the device, do not expose it to
extreme temperatures, extreme humidity or moisture.
Note
Do not use abrasive cleaners or solvents to clean the
device.

4 EN
digital multimeter BE50
Information about the device
Device description
The multimeter is a battery-powered, mobile hand-held
measuring device with an extensive range of measurement
possibilities.
It comes with the following functional properties and equipment
features:
• Automatic/ manual range selection
• 4000digit display, can be illuminated with white light
• Can also be operated while wearing gloves
• Fold-out stand and holding fixture for measuring tips
• Protection type IP67, safety category CATIII (1000V)/
CATIV (600V)
• AC and DCvoltage measurement
• Measurement of direct and alternating currents
• Resistance measurement
• Capacitance measurement
• Frequency/ duty cycle measurement
• Temperature measurement using external typeK sensor
• Diode testing function
• Acoustic continuity testing
• Hold function and relative value measurement function
Device depiction
1
34
6
7
2
8
12
11
9
14
10
15
13
16 17
18
19
5
No. Designation
1 Temperature sensor
2 Adapter for temperature sensor
3 Red measuring tip
4 Black measuring tip
5 Fold-out stand
6 Battery compartment
7 Holding fixture for measuring tips
8 V/Ωsocket
9 COMsocket
10 mAsocket
11 10Asocket
12 Rotary switch
13 MODEbutton
14 RANGEbutton
15 LC display
16 RELbutton
17 Hz%button
18 HOLDbutton
19 °C/°Fbutton

EN 5
digital multimeter BE50
Rotary switch
20 21
22
23
24
25
26
27
No. Position Description
20 OFF The device is switched off.
21 10A Direct and alternating current:
up to 10A
22 mA Direct and alternating current:
up to 400mA
23 µA Direct and alternating current:
up to 400µA
24 Temp Temperature measurement:
-20°C to +760°C
-4°F to +1400°F
25 ΩResistance measurement:
0.1Ω to 10MΩ
Diode test/ continuity measurement
CAP Capacitance measurement:
10pF to 100µF
26 Hz% Frequency measurement:
1mHz to 10MHz
Duty cycle:
0.1% to 99.9%
27 V DCvoltage:
0.1V to 1000V
ACvoltage:
0.1mV to 1000V
Technical data
General characteristics
Parameter Value
Diode test Test current of 0.3mA, test voltage
approx. 1.5VDC (typically)
Continuity test An acoustic signal is emitted if the
resistance amount to less than 150Ω.
LC display 33/4 digits, 4000count LCD
Exceedance of the
measuring range
(outside limits)
OL will be displayed.
Polarity Automatic (no indication for positive);
minus(-) sign for negative
Measuring speed 2x per second, nominal
Battery indication The battery icon will be displayed when
the battery voltage drops below the
operating voltage threshold.
Battery 9V battery
Fuses mA, µArange: 0.5A/ 1000V
(fast acting)
Arange: 10A/ 1000V (fast acting)
Operating
temperature
0°C to 50°C (32°F to 122°F)
Relative humidity <70%
Operating height
above sea level
Max. 2000m (7000ft)
Type of protection IP67
Weight approx. 320g (11.29oz)
Dimensions 182x 82x 55mm
(7.17"x 3.23"x 2.17")
Safety This measuring device is designed for
indoor use and complies with
overvoltage category CATIII(1000V)/
CATIV(600V).

6 EN
digital multimeter BE50
Measuring ranges
Function Measuring range Resolution Accuracy
DCvoltage
(VDC)
400mV 0.1mV ± (1%
+2digits)
4V 1mV ± (1.2%
+2digits)
40V 10mV
400V 100mV
1000V 1V ± (1.5%
+5digits)
ACvoltage
(VAC)
(50/ 60Hz)
400mV 0.1mV ± (1.5%
+2digits)
4V 1mV ± (2.0%
+5digits)
40V 10mV
400V 100mV
1000V 1V ± (2.0%
+8digits)
Direct current
(ADC)
400µA 100nA ± (1.0%
+3digits)
4mA 1µA ± (1.5%
+3digits)
40mA 10µA
400A 100µA
10A 10mA ± (2.5%
+5digits)
Alternating
current
(AAC)
400µA 100nA ± (2.0%
+5digits)
4mA 1µA ± (2.5%
+5digits)
40mA 10µA
400A 100µA
10A 10mA ± (3.0%
+7digits)
Capacitance
(nF)
40nF 0.01nF ± (5.0%
+7digits)
40nF 0.1nF ± (3.0%
+5digits)
4μF/ 40μF 1nF/ 10nF
100μF 100nF ± (5.0%
+5digits)
Resistance
(Ω)
400Ω 0.1Ω ± (1.2%
+4digits)
4kΩ 1Ω ± (1.0%
+2digits)
40kΩ 10Ω ± (1.2%
+2digits)
400kΩ 100Ω
4MΩ 1kΩ
40MΩ 10kΩ ± (2.0%
+3digits)
Function Measuring range Resolution Accuracy
Frequency/
duty cycle
9.999Hz 0.001Hz n/s
99.99Hz 0.01Hz ± (1.5%
+5digits)
999.9Hz 0.1Hz ± (1.2%
+3digits)
9.999kHz 1Hz
99.99kHz 10Hz
999.9kHz 100Hz
9.999MHz 1kHz ± (1.5%
+4digits)
Duty cycle
%
0.1–99.9% 0.1% ± (1.2%
+2digits)
Temperature
(°C/ °F)
-20°C to +760°C 1°C ±3.0%
±5°C/ 9°F
-4°F to +1400°F 1°F
Diode
measurement
Test voltage:
approx. 1.5V
±10% +5digits
1mV
Test current:
typ. 0.3mA
Continuity test Acoustic signal at ≤150Ω
Typ. test current 0.3mA
Note:
The accuracy is based on an ambient temperature of 18°C to
28°C and a relative humidity of less than 75%.
The accuracy specification consists of two values:
• %value referring to the reading: Corresponds to the
accuracy of the installation to be measured.
• +digits: Corresponds to the accuracy referring to the
analogue-to-digital converter.
Scope of delivery
• 1xMultimeter
• 2x Measuring tip
• 2x Protective cap for measuring tips
• 1xTemperature sensor (typeK) with adapter
• 1x 9V battery
• 1x Quick guide

EN 7
digital multimeter BE50
Transport and storage
Note
If you store or transport the device improperly, the
device may be damaged.
Note the information regarding transport and storage of
the device.
Transport
For transporting the device use a suitable bag to protect it from
external influences.
Storage
When the device is not being used, observe the following
storage conditions:
• dry and protected from frost and heat
• protected from dust and direct sunlight
• with a cover to protect it from invasive dust if necessary
• The storage temperature is the same as the range given in
the Technical data chapter.
• Remove the battery from the device.
Operation
Warning of electrical voltage
Electric shock due to contact with live parts! When
using the measuring tips, make sure not to reach
behind the protection against contact.
Inserting the battery
Insert the battery before first use.
Note
Disconnect the measuring tips from the device before
opening the battery compartment.
Note
Make sure that the surface of the device is dry and the
device is switched off.
1. Loosen the screws at the battery compartment(6).
2. Open the battery compartment.
3. Connect the battery to the battery clip with correct polarity.
4. Close the battery compartment and retighten the screws.
Attaching the warning sign
Prior to initial start-up, check whether the warning sign at the
rear of the device is in your local language, if not, paste the
proper one over it. A warning sign in your native language is
supplied along with the device. Please proceed as follows to
attach the warning sign to the rear of the device:
1. Remove the label in your local language from the supplied
film.
2. Affix the label in the intended position at the rear of the
device.

8 EN
digital multimeter BE50
Undefined displays
If measuring inputs are open or touched by hand, this can lead
to undefined displays. This is not a malfunction but a reaction of
the sensitive measuring input to existing interference voltages.
Normally, when there is no high interference level at the
workplace or in case of a short circuit at the measuring input
zero is displayed immediately. Or, if the measuring object is
connected, the exact measured value is displayed. Fluctuations
in the displayed value by some digits are systemic and within
the tolerance.
If the resistance measuring range, the continuity testing range
or the diode test was selected and the measuring input is open,
the OLindication (exceedance of the measuring range) will be
displayed.
Measuring DCvoltage
Warning of electrical voltage
Improper handling of the measuring device entails a
risk of electric shock!
Before carrying out voltage measurements, observe the
following:
• Never apply a voltage exceeding the rated nominal voltage
of the measuring device between the connections or
between the connections and earth (see imprint on the
housing).
• Check the measuring tips for damaged insulation and for
continuity. Replace damaged measuring tips.
• Check the insulation of the measuring device sockets.
• Before using the measuring device, check its functionality
by carrying out measurements with a known voltage.
• First connect the measuring tip connected to earth and
afterwards the live measuring tip. When disconnecting the
measuring tips, proceed in reverse order, i.e. disconnect
the live measuring tip first.
• Prior to every voltage measurement make sure that the
measuring device is not set to the current measuring
range.
• If the device indicates an exceedance of the measuring
range(OL) immediately after being connected to the
measuring object, first switch off the circuit at the
measuring object, then immediately remove the measuring
tips from the measuring object.
• Do not switch any motors in the measuring circuit on or
off during a measurement. Voltage peaks caused by a
switch-on or switch-off can damage the measuring device.
1. Set the rotary switch to the voltage measuring range, then
use the MODEbutton to select the desired measuring
mode (DCindication for DCvoltage).
2. Insert the plug of the black measuring tip into the
COMmeasuring socket and the plug of the red measuring
tip into the V/Ωmeasuring socket.
3. Connect both measuring tips to the measuring object with
correct polarity (black to minus, red to plus).
ðIf the input voltage is negative, a minus(-) will appear in
front of the measured value on the display.
ðThe measured value will be indicated on the display.
4. If the OLindication (exceedance of the measuring range)
appears after the manual range selection, immediately
switch over to the respectively next higher range
(RANGEbutton). If the OLindication appears and the
maximum range has been set already or in case of the
automatic range selection, immediately switch off the
voltage supply at the measuring object and disconnect the
measuring device from the measuring object.
ðThe measured value will be indicated on the display.
Measuring ACvoltage
Warning of electrical voltage
Improper handling of the measuring device entails a
risk of electric shock!
Before carrying out voltage measurements, observe the
following:
• Never apply a voltage exceeding the rated nominal voltage
of the measuring device between the connections or
between the connections and earth (see imprint on the
housing).
• Check the measuring tips for damaged insulation and for
continuity. Replace damaged measuring tips.
• Check the insulation of the measuring device sockets.
• Before using the measuring device, check its functionality
by carrying out measurements with a known voltage.
• First connect the measuring tip connected to earth and
afterwards the live measuring tip. When disconnecting the
measuring tips, proceed in reverse order, i.e. disconnect
the live measuring tip first.
• Prior to every voltage measurement make sure that the
measuring device is not set to the current measuring
range.
• If the device indicates an exceedance of the measuring
range(OL) immediately after being connected to the
measuring object, first switch off the circuit at the
measuring object, then immediately remove the measuring
tips from the measuring object.
• Do not switch any motors in the measuring circuit on or
off during a measurement. Voltage peaks caused by a
switch-on or switch-off can damage the measuring device.
1. Set the rotary switch to the voltage measuring range, then
use the MODEbutton to select the desired measuring
mode (ACindication for ACvoltage).
2. Insert the plug of the black measuring tip into the
COMmeasuring socket and the plug of the red measuring
tip into the V/Ωmeasuring socket.

EN 9
digital multimeter BE50
3. Connect both measuring tips to the measuring object.
ðIf the input voltage is negative, a minus(-) will appear in
front of the measured value on the display.
ðThe measured value will be indicated on the display.
4. If the OLindication (exceedance of the measuring range)
appears after the manual range selection, immediately
switch over to the respectively next higher range
(RANGEbutton). If the OLindication appears and the
maximum range has been set already or in case of the
automatic range selection, immediately switch off the
voltage supply at the measuring object and disconnect the
measuring device from the measuring object.
ðThe measured value will be indicated on the display.
Measuring direct current
Warning of electrical voltage
Improper handling of the measuring device entails a
risk of electric shock!
Before carrying out current measurements, observe the
following:
• Before connecting a measuring device to an electric
circuit, cut off the circuit current. Discharge the capacitors.
• For measuring the current, interrupt the circuit to be
checked and connect the measuring device in series with
the consumer in this circuit.
• Never connect a voltage source to the multimeter's
measuring sockets when a current measuring range is
selected. Otherwise the device could be damaged.
• The voltage in the measuring circuit must not be higher
than 1000V (CATIII) or 600V (CATIV) to earth.
• For measuring higher currents starting at 400mA in the
10Arange, one must observe a maximum measurement
duration of 30s each with an intermission of 15minutes
between two measurements. Otherwise, the device may
be damaged due to excessive heating.
1. Depending on the expected measuring current set the
rotary switch to the μA, mA or 10Arange, then use the
MODEbutton to select the desired measuring mode
(DCindication for direct current).
2. Insert the plug of the black measuring tip into the
COMmeasuring socket and the plug of the red measuring
tip into the µA/mA or 10Ameasuring socket – depending
on the selected range.
3. Switch off the voltage supply at the measuring object and
connect the measuring tips to the measuring object with
correct polarity (in series; red to plus, black to minus).
4. Switch the measuring circuit back on and read the
measured value from the display.
5. If the OLindication (exceedance of the measuring range)
appears after the manual range selection, immediately
switch over to the respectively next higher range. If the
OLindication appears and the maximum range has been
set already or in case of the automatic range selection,
immediately switch off the voltage supply at the measuring
object and disconnect the measuring device from the
measuring object.
Note:
If there is no indication and all connections have been
established correctly, the cause of the fault may be a defective
internal fuse protecting the current measuring ranges (see
chapter Fuse replacement).
Note:
If you have selected the 10A range for safety's sake, but the
measuring current amounts to less than 400mA, switch the
measuring circuit back off. Plug the red measuring tip into the
mAsocket and select a measuring range in the mArange.
Switch the measuring circuit back on.
Measuring alternating current
Warning of electrical voltage
Improper handling of the measuring device entails a
risk of electric shock!
Before carrying out current measurements, observe the
following:
• Before connecting a measuring device to an electric
circuit, cut off the circuit current. Discharge the capacitors.
• For measuring the current, interrupt the circuit to be
checked and connect the measuring device in series with
the consumer in this circuit.
• Never connect a voltage source to the multimeter's
measuring sockets when a current measuring range is
selected. Otherwise the device could be damaged.
• The voltage in the measuring circuit must not be higher
than 1000V (CATIII) or 600V (CATIV) to earth.
• For measuring higher currents starting at 400mA in the
10Arange, one must observe a maximum measurement
duration of 30s each with an intermission of 15minutes
between two measurements. Otherwise, the device may
be damaged due to excessive heating.
1. Depending on the expected measuring current set the
rotary switch to the μA, mA or 10Arange, then use the
MODEbutton to select the desired measuring mode
(ACindication for alternating current).
2. Insert the plug of the black measuring tip into the
COMmeasuring socket and the plug of the red measuring
tip into the µA/mA or 10Ameasuring socket – depending
on the selected range.
3. Switch off the voltage supply at the measuring object and
connect the measuring tips (in series) to the measuring
object.

10 EN
digital multimeter BE50
4. Switch the measuring circuit back on and read the
measured value from the display.
5. If the OLindication (exceedance of the measuring range)
appears after the manual range selection, immediately
switch over to the respectively next higher range. If the
OLindication appears and the maximum range has been
set already or in case of the automatic range selection,
immediately switch off the voltage supply at the measuring
object and disconnect the measuring device from the
measuring object.
Note:
If there is no indication and all connections have been
established correctly, the cause of the fault may be a defective
internal fuse protecting the current measuring ranges (see
chapter Fuse replacement).
Note:
If you have selected the 10A range for safety's sake, but the
measuring current amounts to less than 400mA, switch the
measuring circuit back off. Plug the red measuring tip into the
mAsocket and select a measuring range in the mArange.
Switch the measuring circuit back on.
Measuring resistance
Warning of electrical voltage
Before carrying out resistance, continuity or diode
measurements, switch off the current of the electric
circuit and discharge all capacitors.
1. Set the rotary switch to the resistance measuring
range(Ω/ /CAP), then use the MODEbutton to select
the resistance measurement (MΩindication).
2. Insert the plug of the red measuring tip into
the V/Ωmeasuring socket and the plug of the black
measuring tip into the COMmeasuring socket.
3. Connect the measuring tips to the measuring object. The
measuring device may take some time to display a stable
value. This is due to the measuring principle and not a
malfunction.
ðThe measured value will be indicated on the display.
4. Turn the rotary switch to the position that is closest to the
indicated value but does not fall below it.
ðThe measured value will be indicated on the display.
Note:
In case of very low resistance values (400Ωrange) the internal
resistors of the measuring tips and sockets might lead to a
falsified display. The resistance value displayed in case of
short-circuited measuring tips will be put down in writing and
later subtract from the measured value for the subsequent
measurements.
Diode testing
This function permits the testing of semi-conductor paths for
continuity and blocking function.
Warning of electrical voltage
Before carrying out resistance, continuity or diode
measurements, switch off the current of the electric
circuit and discharge all capacitors.
1. Set the rotary switch to the Ω/ /CAPposition,
then use the MODEbutton to select the diode
test ( indication).
2. Insert the plug of the red measuring tip into
the V/Ωmeasuring socket and the plug of the black
measuring tip into the COMmeasuring socket.
3. Connect the measuring tips to the diode. If the
OLindication (exceedance of the measuring range) is
displayed, swap the measuring tip connections at the
diode.
ðIf a value is displayed, the component is working
properly. The component's forward voltage will be
displayed (approx. 0.2V for Gediodes and approx.
0.5V in case of Sidiodes).
Measuring capacitance
Before carrying out capacitance measurements, observe the
following:
• Discharge each capacitor before carrying out a
measurement! Residual voltage in the capacitor can lead
to a destroyed measuring device! Do not discharge the
capacitor by means of a short circuit. Instead bypass the
connections using a 100kΩresistor.
• Never connect the measuring inputs to a voltage source,
since this would destroy the measuring device.
• For reasons of safety, measure whether there is a residual
charge in the capacitor (using the DCVrange) before you
perform a capacitance measurement.
1. Set the rotary switch to the Ω/ /CAPposition, then
use the MODEbutton to select the capacitance
measurement (nFindication).
2. Insert the plug of the red measuring tip into
the V/Ωmeasuring socket and the plug of the black
measuring tip into the COMmeasuring socket.