Digi-Sense 20250-53 Manuel utilisateur
THE STANDARD IN PRECISION MEASUREMENT
User Manual
Industrial IP67-Rated Digital Multimeters
with NIST-Traceable Calibration
Model 20250-53
(4000 Count)
Model 20250-54
(4000 Count, True RMS)
1065DGMAN_20250-53-54 Manual.indd 1
8/16/2017 10:42:05 AM
2
Introduction
Digi-Sense Industrial Digital Multimeters (model 20250-53;
TRMS model 20250-54) are a must-have on your electrical
tool belt—especially for those who need a rugged and
reliable meter. These versatile and simple-to-use units safely
measure the full range of common parameters including voltage,
current, resistance, capacitance, frequency, temperature, and
more. All this technology is packaged in a double-insulated
housing that meets IP67 requirements. The instruments are fully
tested and calibrated to NIST-traceable standards. Careful use of
the meter will provide years of reliable service.
Safety
Safety Warnings
The following safety information must be
observed to insure maximum personal safety
during the operation at this meter:
• Measurements beyond the maximum selected range
must not be attempted.
• Extreme care must be taken when measuring above 50 V,
especially on live bus-bars.
• To measure voltage, the instrument must not be switched
to a current or resistance range, or to the diode check or
buzzer position.
• Circuits must be de-energized and isolated before
carrying out resistance tests.
• The rotary function switch must only be turned after
removing test connections.
• All external voltages must be disconnected from the
instrument before removing the battery.
1065DGMAN_20250-53-54 Manual.indd 2
8/16/2017 10:42:05 AM
3
• Test leads and prods must be in good order, clean, and
with no broken or cracked insulation.
• UK Safety Authorities recommend the use of fused test
leads when measuring voltage on high energy systems.
• Replacement fuses must be of the correct type and rating.
• The instrument must not be used if any part of it is damaged.
• Warnings and precautions must be read and understood
before an instrument is used. They must be observed dur-
ing the operation of this instrument.
Safety used on this instrument are:
Caution: refer to accompanying notes.
This symbol indicates that the operator must refer
to an explanation in the manual to avoid personal
injury or damage to the meter.
Caution: risk of electric shock
This WARNING symbol indicates a potentially
hazardous situation, which if not avoided, could
result in death or serious injury.
This CAUTION symbol indicates a potentially
hazardous situation, which if not avoided, may
result damage to the product.
This symbol advises the user that the terminal(s)
so marked must not be connected to a circuit point
at which the voltage with respect to earth ground
exceeds (in this case) 1000 VAC or VDC.
Equipment protected throughout by Double
Insulation (Class II)
Equipment complies with current EU directives.
MAX
500V
1065DGMAN_20250-53-54 Manual.indd 3
8/16/2017 10:42:05 AM
4
Unpacking
Check individual parts against the list of items below. If anything is
missing or damaged, please contact your instrument supplier
immediately.
1. Instrument
2. Test leads
3. One type K temperature probe (model 20250-54 only)
4. One 9 V battery
5. Carrying case
6. User manual
7. NIST-traceable calibration report with data
Meter Description (Model 20250-53)
1. NCV detection light
2. LCD with symbols
3. RANGE button
4. REL (Relative) button
5. MODE button
6. Rotary function switch
7. 10A (positive) jack
8. µA/mA jack
9. Hz% button
10. Data HOLD button
11. Backlight button
12. V ΩCAP •))) Hz% jack
13. COM (negative) jack
14. Tilt stand and battery
compartment are on
rear of unit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1065DGMAN_20250-53-54 Manual.indd 4
8/16/2017 10:42:05 AM
5
Meter Description (Model 20250-54)
1. NCV detection light
2. LCD with symbols and
analog bar graph
3. Data HOLD button
4. RANGE button
5. MODE button
6. Rotary function switch
7. 10A (positive) jack
8. µA/mA jack
9. MAX/MIN button
10. PEAK button
11. Backlight button
12. V ΩCAP •))) Hz
Temp jack
13. COM (negative) jack
14. Tilt stand and battery
compartment are on rear of unit
Symbols and Annunciators
Continuity
Low battery
Diode test
HOLD Data HOLD
AUTO Autoranging
AC Alternating Current or Voltage
DC Direct Current or Voltage
V Volts
A, mA, µA Current range
1
2
3
4
5
6
7
8
9
10
11
12
13
14
•)))
1065DGMAN_20250-53-54 Manual.indd 5
8/16/2017 10:42:05 AM
6
Setup and Operation
To turn on the instrument turn the rotary function switch
from the OFF position to any measurement range.
NOTE: For best battery life ALWAYS turn the rotary function
switch to the OFF position when the meter is not in use.
Meter has Auto power-off that automatically shuts the
meter off if 30 minutes elapse between uses.
NOTE: On some low AC and DC voltage ranges, with the
test leads not connected to a device, the display may show
a random, changing reading. This is normal and is caused
by the high-input sensitivity. The reading will stabilize and
give a proper measurement when connected to a circuit.
MODE Button
To select AC or DC measurement when Voltages, Amps,
mA , µA, Ω, , •))), CAP, or Hz% are selected.
HOLD Button
The Data HOLD function allows the meter to "freeze" a
measurement for later reference.
1. Press the HOLD button to “freeze” the reading on the
display. The indicator “HOLD” will be appear in the
display.
2. Press the HOLD button to resume normal operation.
1065DGMAN_20250-53-54 Manual.indd 6
8/16/2017 10:42:05 AM
7
RANGE Button
When the meter is rst turned on, it automatically defaults
to Autoranging. This automatically selects the best range
for the measurements being made and is generally the
optimal mode for most measurements. For measurement
situations requiring that a range be manually selected,
perform the following:
1. Press the RANGE button. The “Auto Range” display
indicator will turn off. The “Manual Range” display
indicator will turn on
2. Press the RANGE button to step through the available
ranges until you select the range you want.
3. Press and hold the RANGE button for 2 seconds to exit
the manual ranging mode and return to autoranging.
REL Button (Model 20250-53 only)
The relative (REL) measurement feature allows you to
make measurements relative to a stored reference value.
A reference voltage, current, etc., can be stored and
measurements made in comparison to that value. The
displayed value is the difference between the reference
value and the measured value.
Note: This function works with all functions except Hz%,
Diode, and Continuity.
1. Press the REL button to store the reading in the display
and the "REL" indicator will appear on the display.
2. The display will now indicate the difference between the
stored value and the measured value.
3. Press the REL button again to resume normal operation.
1065DGMAN_20250-53-54 Manual.indd 7
8/16/2017 10:42:05 AM
8
MAX/MIN Button (Model 20250-54 only)
The MAX/MIN function allows the meter to capture the
highest or lowest reading for later reference.
1. Press the MAX/MIN button to begin measurement. The
indicator “MAX” or “MIN” will appear in the display.
2. If the “MAX MIN” messages are ashing, the instrument
is in MAX/MIN mode but not recording, press the
MAX/MIN button to select a mode.
3. To resume operation, hold down the MAX/MIN button
for 2 seconds.
PEAK Hold Button (Model 20250-54 only)
The PEAK Hold function captures the peak AC voltage or
current. The meter can capture negative or positive peaks
as fast as 1 millisecond in duration.
1. Set the rotary function switch to the Aor Vposition.
2. Press the MODE button to select “AC”.
3. Allow time for the display to stabilize.
4. Press and hold the PEAK button until “CAL” appears in
the display.
5. This procedure will zero the range selected.
6. Press the PEAK button; the indicator “Pmax” will be
displayed.
7. The display will update each time a higher positive peak
occurs.
8. Press the PEAK button again; the indicator “Pmin” will
be displayed. The display will now update and indicate
the lowest negative peak.
1065DGMAN_20250-53-54 Manual.indd 8
8/16/2017 10:42:05 AM
9
9. To return to normal operation, press and hold the PEAK
button until the “Pmax” or “Pmin” indicator switches
off.
10. If the rotary function switch position is changed after a
calibration, the PEAK Hold calibration must be repeated
for the new function selected.
BACKLIGHT Button
1. Press the BACKLIGHT button to switch on the display
light.
2. Press BACKLIGHT button again to exit the light mode.
AC and DC Voltage Measurements
1. Insert the black test lead into the negative COM terminal
and the red test lead into the positive V terminal.
2. Set the rotary function switch to the V AC/DC position.
3. Press the MODE button to select “AC” or “DC” voltage.
4. Connect the test leads in parallel to the circuit under test.
5. Read the voltage measurement on the display.
AC and DC Current Measurements
1. Insert the black test lead banana plug into the negative
COM jack.
2. For current measurements up to 4000 µA, set the rotary
function switch to the µA position and insert the red test
lead banana plug into the (µA, mA) jack.
3. For current measurements up to 400 mA, set the rotary
function switch to the mA range and insert the red test
lead banana plug into the (µA, mA) jack.
1065DGMAN_20250-53-54 Manual.indd 9
8/16/2017 10:42:05 AM
10
4. For current measurements up to 10 A, set the rotary
function switch to the 10A position and insert the red
test lead banana plug into the 10A jack.
5. Press the MODE button to select “AC” or “DC” current.
6. Remove power from the circuit under test, then open the
circuit at the point where you wish to measure current.
7. Touch the black test probe tip to the negative side of the
circuit and touch the red test probe tip to the positive
side of the circuit.
8. Apply power to the circuit.
9. Read the current measurement on display. The proper
decimal point, value, and symbol will be indicated.
Resistance Measurement
WARNING: To avoid electric shock, disconnect power
to the unit under test and discharge all capacitors
before taking any resistance measurements. Remove
the batteries and unplug the line cords.
1. Set the rotary function switch to the Ωposition.
2. Insert the black test lead plug into the negative COM
socket and the red test lead plug into the positive Ωjack.
3. Press the MODE button until “Ω” appears in the display.
4. Touch the test probe tips across the circuit or part under
test. It is best to disconnect one side of the part under
test so the rest of the circuit will not interfere with the
resistance reading.
5. Read the resistance measurement on the display. The
display will indicate the proper decimal point, value, and
symbol.
1065DGMAN_20250-53-54 Manual.indd 10
8/16/2017 10:42:05 AM
Ce manuel convient aux modèles suivants
1
Table des matières
Autres manuels Digi-Sense Multimètre
Manuels Multimètre populaires d'autres marques
Gossen MetraWatt
Gossen MetraWatt METRAmax 6 Manuel utilisateur
PeakTech
PeakTech 4000 Manuel d'utilisation et d'entretien
YOKOGAWA
YOKOGAWA 90050B Manuel utilisateur
Gossen MetraWatt
Gossen MetraWatt METRALINE DMM16 Manuel utilisateur
Fluke
Fluke 8846A Manuel d'utilisation et d'entretien
Tempo Communications
Tempo Communications MM200 Manuel utilisateur
