Hioki P2000 User manual

DC HIGH VOLTAGE PROBE
Instruction Manual
Dec. 2021 Edition 1
P2000A961-00 21-12H
P2000
EN
www.hioki.com/
Warranty
Malfunctions occurring under conditions of normal use in conformity
with the Instruction Manual and Product Precautionary Markings will
be repaired free of charge. This warranty is valid for a period of three
(3) years from the date of purchase. Please contact the distributor
from which you purchased the product for further information on
warranty provisions.
Introduction
Thank you for choosing the Hioki P2000 DC High Voltage Probe. To
ensure your ability to get the most out of this device over the long
term, please read this manual carefully and keep it available for
future reference.
Carefully read the separate document entitled “Operating
Precautions” before use.
Latest edition of instruction manual
The contents of this manual are subject to change,
for example as a result of product improvements or
changes to specications.
The latest edition can be downloaded from Hioki’s
website.
https://www.hioki.com/global/support/download
Intended audience
This manual has been written for use by individuals who use the
product or provide information about how to use the product. In
explaining how to use the product, it assumes electrical knowledge
(equivalent of the knowledge possessed by a graduate of an
electrical program at a technical high school).
Shipping Precautions
Store the device packaging material after opening the device. Use
the original packaging when shipping the device.
Overview
This device is designed to safely measure DC voltages of up to 2000 V DC (CAT III
2000 V). When it is connected to an instrument’s input terminals, the voltage of the
object under measurement is reduced prior to input, allowing safe measurement of
voltages of up to 2000 V DC in equipment such as solar panels.
Symbols and abbreviations
Safety notations
This manual classies seriousness of risks and hazard levels as
described below.
DANGER Indicates an imminently hazardous situation that,
if not avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation that,
if not avoided, could result in death or serious
injury.
CAUTION
Indicates a potentially hazardous situation that,
if not avoided, could result in minor or moderate
injury.
NOTICE Indicates potential risks of damage to the
supported product (or to other property).
Indicates the presence of a hazard caused by a
strong magnet.
Indicates that the product could interfere with the
proper operation of electronic medical devices
such as pacemakers.
Indicates a prohibited action.
Indicates a mandatory action.
Symbols on the device
Indicates the presence of a potential hazard. For more
information about locations where this symbol appears
on device components, see the “Usage Notes” section,
warning messages listed at the beginning of operating
instructions, and the accompanying document entitled
“Operating Precautions”.
Indicates direct current (DC).
Indicates the grounding terminal.
Symbols for various standards
Indicates that the product is subject to the Waste
Electrical and Electronic Equipment (WEEE)
Directive in EU member nations.
Indicates that the product complies with standards
imposed by EU directives.
Others
* Indicates additional information is described below.
Safety Information
WARNING
If using an electrical measuring instrument for the
rst time, seek instruction from an individual with
electrical measurement experience rst.
Failure to do so could cause the user to experience an electric
shock.
Moreover, it could cause serious events such as heat generation,
re, and an arc ash due to a short-circuit.
Protective gear
Use insulated protective gear.
The device is designed to measure live wires. Failure to use
protective gear could cause the user to experience an electric
shock.
Using protective gear is prescribed under applicable laws and
regulations.
Precautions for Use
Be sure to follow the precautions listed below in order to use the
device safely and in a manner that allows it to function e󰀨ectively.
DANGER
People with electronic medical devices such as
pacemakers should not use the Z5004 or Z5020
Magnetic Strap.
Keep the magnet strap away from the body.
The medical electronics may not operate properly and the life of
the operator may be put at great risk.
WARNING
Do not allow the cable to make contact with the
line under measurement.
Mistaking these cables could damage the device or cause the
object under measurement to short-circuit, resulting in bodily
injury.
Keep magnetic strap out of the reach of children.
Swallowing magnets can be life-threatening. If you inadvertently
swallow a magnet, seek medical attention immediately.
CAUTION
Do not step on cords or allow them to become caught
between other objects.
Doing so may damage insulation, resulting in bodily injury.
Do not bend or pull on cables at temperatures of 0°C or
lower.
Since cables become rigid, doing so could damage the insulation
or cause a wire break, resulting in electric shock.
NOTICE
Do not subject the device to vibration or mechanical
shock while transporting or handling it.
Do not drop the device.
Doing so could damage the device.
NOTICE
Do not drop magnetic strap onto a oor or other
surface.
Do not apply excessive force to magnetic strap.
Doing so could damage the magnetic strap.
Do not use a magnetic strap if it has been exposed to
rainwater, dust, or condensation.
Such exposure could cause the magnetic strap to corrode or
otherwise degrade. Additionally, it could reduce the strength of
the magnet, allowing the product to fall and sustain damage.
Keep magnetic strap away from magnetic storage
media such as oppy disks, magnetic cards, prepaid
cards, and tickets.
Keep the magnetic strap away from precision electronic
devices such as computers, television screens, and
electronic wristwatches.
Failure to do so could result in data loss or equipment damage.
Inspecting the Device Before Use
Check the device for any damage that may have occurred during
storage or shipping before use. If you nd any damage to the device,
please contact your authorized Hioki distributor or reseller for repair.
Check item Action
• The instrument is neither
damaged nor cracked.
• The internal circuits are not
exposed.
• The coating of probes and
cables are neither broken nor
frayed, or the white portion or
metal part within the probes or
cables are not exposed.
If any damage is found, request
repair.
Otherwise, there is a risk of
receiving an electric shock.
The terminals are not contaminated
with debris.
Remove contamination with a
cotton swab.
The coating of connection cables
are neither broken nor frayed, or
the white portion or metal part
within the connection cables are
not exposed.
If any damage is found, replace
the test leads with those
specied by Hioki.
Otherwise, there is a risk of
receiving an electric shock.
Connect the probe to a compatible
instrument, measure a sample
with a known value (for example, a
battery or DC voltage generator),
and verify that the instrument
displays the expected value.
If the instrument does not
displays proper measured
value, the probe may be
malfunctioning. Please request
repair.
Maintenance and Service
If the device seems to be malfunctioning, contact your authorized
Hioki distributor or reseller.
Cleaning
NOTICE
If the device becomes dirty, wipe the device clean with
a soft cloth moistened with water or a neutral detergent.
Using detergent that contains solvents such as benzene, alcohol,
acetone, ether, ketones, thinners or gasoline could deform and
discolor the instrument, as could wiping it with excessive force.
Shipping Precautions
Observe the following when shipping the device.
NOTICE
Remove accessories and options from the device.
Attach a description of the malfunction.
Use the packaging in which the device was initially
delivered and then pack that in an additional box.
Failure to do so could cause damage during shipment.
HIOKI P2000A961-00

Part Names
Entire probe
Serial number *1
Cable
BlackRed
OUTPUT H terminal (red) *2
OUTPUT L terminal (black) *2
(Rear)
Protective
nger guard
Circuit box
Strap hole
L4943 Connection Cable Set (included)
Black
Red
Plug Plug
*1: The serial number consists of 9-digit numbers. The rst four digits indicate the
year (its rst two digits omitted) and the month of manufacture.
Do not remove this label as the number is important.
*2: Connect the L4943 Connection Cable Set, L4930 Connection Cable Set, or
L4931 Extension Cable Set.
Specications
Accuracy labeling
Reading (display value)
Indicates the value displayed by the instrument. Limit values for reading errors are
expressed as a percentage of the reading (“% rdg.”).
Operating
environment
Indoor use, pollution degree 2, altitude up to 2000 m (6562 ft.)
Operating
temperature and
humidity range
Temperature: −25°C to 65°C (−13.0°F to 149.0°F)
Humidity:
−25°C to 40°C (−13.0°F to 104.0°F): 80% RH or less
(non-condensing)
40°C to 65°C (104.0°F to 149.0°F): Linearly reduces
from 80% RH or less at 40°C (104.0°F) to 25% RH
or less at 65°C (149.0°F) (non-condensing).
Storage temperature
and humidity range
−30°C to 70°C (−22.0°F to 158.0°F),
90% RH or less (non-condensing)
Standards Safety: EN 61010
Dimensions Exposed metal area: Approx. 3.7 mm (0.15″)
(φ2.0 mm)
Protective nger guard tip: Approx. 42.7 mm (1.68″)
Entire probe: Approx. 154 mm (6.06″)
Cable: Approx. 1500 mm (59.06″)
Circuit box: Approx. 58W × 133H × 22D mm
(2.28″W × 5.24″H × 0.87″D)
Weight Approx. 190 g (6.7 oz.)
Product warranty
duration
3 years (excluding entire probe and cable)
Accessories • L4943 Connection Cable Set
• Strap Buckle ×2
• Strap
• C0205 Carrying Case
• Instruction manual (this manual）
• Operating Precautions (0990A909)
Options The options listed below are available for the device. To order
an option, please contact your authorized Hioki distributor or
reseller. Options are subject to change. Please check Hioki’s
website for the latest information.
• L4930 Connection Cable Set (1.2 m)
• L4931 Extension Cable Set (1.5 m)
• L4943 Connection Cable Set (65 mm)
• Z5004 Magnetic Strap
• Z5020 Magnetic Strap (Extra strength)
• C0205 Carrying Case
Maximum input voltage (Maximum rated voltage between INPUT H and INPUT L)
2000 V DC
Maximum rated line-
to-ground voltage
1000 V (Measurement category IV),
Anticipated transient overvoltage: 12,000 V
2000 V (Measurement category III),
Anticipated transient overvoltage: 15,000 V
Input resistance 20 MΩ±5.0%
(between INPUT H and INPUT L, with OUTPUT terminal open)
Overload protection 2200 V DC/2200 V AC (applied for 1 minute)
(Between INPUT H - INPUT L)
600 V DC/600 V AC (applied for 1 minute)
(Between OUTPUT H - OUTPUT L)
OUTPUT terminal 4 mm banana terminal
Accuracy guarantee
conditions
Accuracy guarantee duration: 1 year
Accuracy guarantee duration after adjustment made by Hioki:
1 year
Accuracy guarantee temperature and humidity range:
23°C ±5°C (73.0°F ±9.0°F), 80% RH or less (non-condensing)
Others: 1.5 m or less of the cable length on the OUTPUT side
Temperature
coe󰀩cient
Outside the temperature range of 23°C ±5°C,
(Accuracy × 0.1)/°C is added to the accuracy
Accuracy guarantee
range
±80 V DC to ±2000 V DC
Accuracy table for compatible instruments
1. Compatible instruments for which combined accuracy has been dened
-1. Models with DC High V Probe mode
Model Range Output ratio Combined accuracy
DT4261 600.0 V – ±0.5% rdg ±0.2 V
2000 V – ±0.5% rdg ±5 V
CM4141-50,
CM4371-50,
CM4373-50,
CM4375-50
600.0 V – ±1.0% rdg ±0.3 V
2000 V – ±1.0% rdg ±3 V
-2. Models without DC High V Probe mode
Model Function Range Output ratio Combined accuracy
DT4281, DT4282 DCV 60.000 V 1/10 ±0.8% rdg ±0.002 V
600.00 V 1/10 ±0.8% rdg ±0.02 V
DT4251, DT4252,
DT4253 DCV 60.00 V 1/10 ±1.2% rdg ±0.05 V
600.0 V 1/10 ±1.2% rdg ±0.5 V
DT4254, DT4255,
DT4256 DCV 60.00 V 1/10 ±1.2% rdg ±0.03 V
600.0 V 1/10 ±1.2% rdg ±0.3 V
CM4371, CM4372,
CM4373, CM4374,
CM4375, CM4376,
CM4141, CM4142
DCV
60.00 V 1/11 ±3.0% rdg ±0.03 V
600.0 V 1/11 ±3.0% rdg ±0.3 V
2. Compatible instruments for which output accuracy has been dened
Compatible
instruments Function Range Output ratio
Output accuracy
(relative to output
ratio)
Input resistance
10 MΩ±5% DCV – 1/10 ±5.0% output *
*: Does not include accuracy of compatible instrument
Making Measurements
WARNING
Do not use the device to measure AC voltages
The probe cannot accurately measure AC voltages. Improper
measurement could lead to electric shock. You can use the
device for DC voltage measurement only.

Do not measure DC voltages in excess of 2000 V DC.
Doing so could cause damage to the device and measuring
instrument, resulting in bodily injury.
NOTICE
When using the L4943 Connection Cable Set (included),
do not subject the cable or plug to a mechanical load.
Doing so could cause the cable to become disconnected or result
in damage to the cables and plugs.
When using the L4943 Connection Cable Set
(included)
Of the compatible instruments, the strap buckle can only be used with the DT4261 and
CM series as other models lack strap holes. Exercise care not to subject the cables or
plugs to a mechanical load.
1
Disconnect the clip from the strap buckle as shown in
the gure.
2
Attach the strap to the device.
Strap
-1
Pass the strap through the strap attachment hole on the back of the device.
-2
Pass the strap through the clip.
-3
Secure the strap as shown in the gure.
-2
-3
-1
3
Attach the strap buckle to a compatible instrument and
connect it to the clip that you attached to the device with
the strap.
Example: CM4375-50
When using the L4930 Connection Cable Set or
the L4931 Extension Cable Set (optional)
Hang the device in some way, such as using a magnetic strap,
not to subject the cables and the plugs to stress.
Making measurement
1
Set the compatible instrument to its DC voltage
measurement function and select the appropriate range
as indicated in the accuracy specications.
If using an instrument with DC High V Probe mode, enable DC High V Probe
mode.
2
Connect the device to the compatible instrument with the
connection cable.
Connect the instrument’s COM and V terminals to the device’s OUTPUT L
(black) and OUTPUT H (red) terminals, respectively, with the L4943 (included)
or L4930 (optional).
Connect to
the object under
measurement
3
OUTPUT
3
Connect the device’s probe to the object under
measurement.
N (–)
P (+)
P2000 probes
Red
Black
4
Check the measured value.
The actual measured value is obtained by converting the displayed measured
value based on the output ratio.
Example: For the CM4375, multiply by 11.
Instruments with DC High V Probe mode display the actual measured value,
eliminating the need for conversion.
HIOKI P2000A961-00

DC HIGH VOLTAGE PROBE
Instruction Manual
Dec. 2021 Edition 1
P2000A961-00 21-12H
P2000
EN
www.hioki.com/
Warranty
Malfunctions occurring under conditions of normal use in conformity
with the Instruction Manual and Product Precautionary Markings will
be repaired free of charge. This warranty is valid for a period of three
(3) years from the date of purchase. Please contact the distributor
from which you purchased the product for further information on
warranty provisions.
Introduction
Thank you for choosing the Hioki P2000 DC High Voltage Probe. To
ensure your ability to get the most out of this device over the long
term, please read this manual carefully and keep it available for
future reference.
Carefully read the separate document entitled “Operating
Precautions” before use.
Latest edition of instruction manual
The contents of this manual are subject to change,
for example as a result of product improvements or
changes to specications.
The latest edition can be downloaded from Hioki’s
website.
https://www.hioki.com/global/support/download
Intended audience
This manual has been written for use by individuals who use the
product or provide information about how to use the product. In
explaining how to use the product, it assumes electrical knowledge
(equivalent of the knowledge possessed by a graduate of an
electrical program at a technical high school).
Shipping Precautions
Store the device packaging material after opening the device. Use
the original packaging when shipping the device.
Overview
This device is designed to safely measure DC voltages of up to 2000 V DC (CAT III
2000 V). When it is connected to an instrument’s input terminals, the voltage of the
object under measurement is reduced prior to input, allowing safe measurement of
voltages of up to 2000 V DC in equipment such as solar panels.
Symbols and abbreviations
Safety notations
This manual classies seriousness of risks and hazard levels as
described below.
DANGER Indicates an imminently hazardous situation that,
if not avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation that,
if not avoided, could result in death or serious
injury.
CAUTION
Indicates a potentially hazardous situation that,
if not avoided, could result in minor or moderate
injury.
NOTICE Indicates potential risks of damage to the
supported product (or to other property).
Indicates the presence of a hazard caused by a
strong magnet.
Indicates that the product could interfere with the
proper operation of electronic medical devices
such as pacemakers.
Indicates a prohibited action.
Indicates a mandatory action.
Symbols on the device
Indicates the presence of a potential hazard. For more
information about locations where this symbol appears
on device components, see the “Usage Notes” section,
warning messages listed at the beginning of operating
instructions, and the accompanying document entitled
“Operating Precautions”.
Indicates direct current (DC).
Indicates the grounding terminal.
Symbols for various standards
Indicates that the product is subject to the Waste
Electrical and Electronic Equipment (WEEE)
Directive in EU member nations.
Indicates that the product complies with standards
imposed by EU directives.
Others
* Indicates additional information is described below.
Safety Information
WARNING
If using an electrical measuring instrument for the
rst time, seek instruction from an individual with
electrical measurement experience rst.
Failure to do so could cause the user to experience an electric
shock.
Moreover, it could cause serious events such as heat generation,
re, and an arc ash due to a short-circuit.
Protective gear
Use insulated protective gear.
The device is designed to measure live wires. Failure to use
protective gear could cause the user to experience an electric
shock.
Using protective gear is prescribed under applicable laws and
regulations.
Precautions for Use
Be sure to follow the precautions listed below in order to use the
device safely and in a manner that allows it to function e󰀨ectively.
DANGER
People with electronic medical devices such as
pacemakers should not use the Z5004 or Z5020
Magnetic Strap.
Keep the magnet strap away from the body.
The medical electronics may not operate properly and the life of
the operator may be put at great risk.
WARNING
Do not allow the cable to make contact with the
line under measurement.
Mistaking these cables could damage the device or cause the
object under measurement to short-circuit, resulting in bodily
injury.
Keep magnetic strap out of the reach of children.
Swallowing magnets can be life-threatening. If you inadvertently
swallow a magnet, seek medical attention immediately.
CAUTION
Do not step on cords or allow them to become caught
between other objects.
Doing so may damage insulation, resulting in bodily injury.
Do not bend or pull on cables at temperatures of 0°C or
lower.
Since cables become rigid, doing so could damage the insulation
or cause a wire break, resulting in electric shock.
NOTICE
Do not subject the device to vibration or mechanical
shock while transporting or handling it.
Do not drop the device.
Doing so could damage the device.
NOTICE
Do not drop magnetic strap onto a oor or other
surface.
Do not apply excessive force to magnetic strap.
Doing so could damage the magnetic strap.
Do not use a magnetic strap if it has been exposed to
rainwater, dust, or condensation.
Such exposure could cause the magnetic strap to corrode or
otherwise degrade. Additionally, it could reduce the strength of
the magnet, allowing the product to fall and sustain damage.
Keep magnetic strap away from magnetic storage
media such as oppy disks, magnetic cards, prepaid
cards, and tickets.
Keep the magnetic strap away from precision electronic
devices such as computers, television screens, and
electronic wristwatches.
Failure to do so could result in data loss or equipment damage.
Inspecting the Device Before Use
Check the device for any damage that may have occurred during
storage or shipping before use. If you nd any damage to the device,
please contact your authorized Hioki distributor or reseller for repair.
Check item Action
• The instrument is neither
damaged nor cracked.
• The internal circuits are not
exposed.
• The coating of probes and
cables are neither broken nor
frayed, or the white portion or
metal part within the probes or
cables are not exposed.
If any damage is found, request
repair.
Otherwise, there is a risk of
receiving an electric shock.
The terminals are not contaminated
with debris.
Remove contamination with a
cotton swab.
The coating of connection cables
are neither broken nor frayed, or
the white portion or metal part
within the connection cables are
not exposed.
If any damage is found, replace
the test leads with those
specied by Hioki.
Otherwise, there is a risk of
receiving an electric shock.
Connect the probe to a compatible
instrument, measure a sample
with a known value (for example, a
battery or DC voltage generator),
and verify that the instrument
displays the expected value.
If the instrument does not
displays proper measured
value, the probe may be
malfunctioning. Please request
repair.
Maintenance and Service
If the device seems to be malfunctioning, contact your authorized
Hioki distributor or reseller.
Cleaning
NOTICE
If the device becomes dirty, wipe the device clean with
a soft cloth moistened with water or a neutral detergent.
Using detergent that contains solvents such as benzene, alcohol,
acetone, ether, ketones, thinners or gasoline could deform and
discolor the instrument, as could wiping it with excessive force.
Shipping Precautions
Observe the following when shipping the device.
NOTICE
Remove accessories and options from the device.
Attach a description of the malfunction.
Use the packaging in which the device was initially
delivered and then pack that in an additional box.
Failure to do so could cause damage during shipment.
HIOKI P2000A961-00

Part Names
Entire probe
Serial number *1
Cable
BlackRed
OUTPUT H terminal (red) *2
OUTPUT L terminal (black) *2
(Rear)
Protective
nger guard
Circuit box
Strap hole
L4943 Connection Cable Set (included)
Black
Red
Plug Plug
*1: The serial number consists of 9-digit numbers. The rst four digits indicate the
year (its rst two digits omitted) and the month of manufacture.
Do not remove this label as the number is important.
*2: Connect the L4943 Connection Cable Set, L4930 Connection Cable Set, or
L4931 Extension Cable Set.
Specications
Accuracy labeling
Reading (display value)
Indicates the value displayed by the instrument. Limit values for reading errors are
expressed as a percentage of the reading (“% rdg.”).
Operating
environment
Indoor use, pollution degree 2, altitude up to 2000 m (6562 ft.)
Operating
temperature and
humidity range
Temperature: −25°C to 65°C (−13.0°F to 149.0°F)
Humidity:
−25°C to 40°C (−13.0°F to 104.0°F): 80% RH or less
(non-condensing)
40°C to 65°C (104.0°F to 149.0°F): Linearly reduces
from 80% RH or less at 40°C (104.0°F) to 25% RH
or less at 65°C (149.0°F) (non-condensing).
Storage temperature
and humidity range
−30°C to 70°C (−22.0°F to 158.0°F),
90% RH or less (non-condensing)
Standards Safety: EN 61010
Dimensions Exposed metal area: Approx. 3.7 mm (0.15″)
(φ2.0 mm)
Protective nger guard tip: Approx. 42.7 mm (1.68″)
Entire probe: Approx. 154 mm (6.06″)
Cable: Approx. 1500 mm (59.06″)
Circuit box: Approx. 58W × 133H × 22D mm
(2.28″W × 5.24″H × 0.87″D)
Weight Approx. 190 g (6.7 oz.)
Product warranty
duration
3 years (excluding entire probe and cable)
Accessories • L4943 Connection Cable Set
• Strap Buckle ×2
• Strap
• C0205 Carrying Case
• Instruction manual (this manual）
• Operating Precautions (0990A909)
Options The options listed below are available for the device. To order
an option, please contact your authorized Hioki distributor or
reseller. Options are subject to change. Please check Hioki’s
website for the latest information.
• L4930 Connection Cable Set (1.2 m)
• L4931 Extension Cable Set (1.5 m)
• L4943 Connection Cable Set (65 mm)
• Z5004 Magnetic Strap
• Z5020 Magnetic Strap (Extra strength)
• C0205 Carrying Case
Maximum input voltage (Maximum rated voltage between INPUT H and INPUT L)
2000 V DC
Maximum rated line-
to-ground voltage
1000 V (Measurement category IV),
Anticipated transient overvoltage: 12,000 V
2000 V (Measurement category III),
Anticipated transient overvoltage: 15,000 V
Input resistance 20 MΩ±5.0%
(between INPUT H and INPUT L, with OUTPUT terminal open)
Overload protection 2200 V DC/2200 V AC (applied for 1 minute)
(Between INPUT H - INPUT L)
600 V DC/600 V AC (applied for 1 minute)
(Between OUTPUT H - OUTPUT L)
OUTPUT terminal 4 mm banana terminal
Accuracy guarantee
conditions
Accuracy guarantee duration: 1 year
Accuracy guarantee duration after adjustment made by Hioki:
1 year
Accuracy guarantee temperature and humidity range:
23°C ±5°C (73.0°F ±9.0°F), 80% RH or less (non-condensing)
Others: 1.5 m or less of the cable length on the OUTPUT side
Temperature
coe󰀩cient
Outside the temperature range of 23°C ±5°C,
(Accuracy × 0.1)/°C is added to the accuracy
Accuracy guarantee
range
±80 V DC to ±2000 V DC
Accuracy table for compatible instruments
1. Compatible instruments for which combined accuracy has been dened
-1. Models with DC High V Probe mode
Model Range Output ratio Combined accuracy
DT4261 600.0 V – ±0.5% rdg ±0.2 V
2000 V – ±0.5% rdg ±5 V
CM4141-50,
CM4371-50,
CM4373-50,
CM4375-50
600.0 V – ±1.0% rdg ±0.3 V
2000 V – ±1.0% rdg ±3 V
-2. Models without DC High V Probe mode
Model Function Range Output ratio Combined accuracy
DT4281, DT4282 DCV 60.000 V 1/10 ±0.8% rdg ±0.002 V
600.00 V 1/10 ±0.8% rdg ±0.02 V
DT4251, DT4252,
DT4253 DCV 60.00 V 1/10 ±1.2% rdg ±0.05 V
600.0 V 1/10 ±1.2% rdg ±0.5 V
DT4254, DT4255,
DT4256 DCV 60.00 V 1/10 ±1.2% rdg ±0.03 V
600.0 V 1/10 ±1.2% rdg ±0.3 V
CM4371, CM4372,
CM4373, CM4374,
CM4375, CM4376,
CM4141, CM4142
DCV
60.00 V 1/11 ±3.0% rdg ±0.03 V
600.0 V 1/11 ±3.0% rdg ±0.3 V
2. Compatible instruments for which output accuracy has been dened
Compatible
instruments Function Range Output ratio
Output accuracy
(relative to output
ratio)
Input resistance
10 MΩ±5% DCV – 1/10 ±5.0% output *
*: Does not include accuracy of compatible instrument
Making Measurements
WARNING
Do not use the device to measure AC voltages
The probe cannot accurately measure AC voltages. Improper
measurement could lead to electric shock. You can use the
device for DC voltage measurement only.

Do not measure DC voltages in excess of 2000 V DC.
Doing so could cause damage to the device and measuring
instrument, resulting in bodily injury.
NOTICE
When using the L4943 Connection Cable Set (included),
do not subject the cable or plug to a mechanical load.
Doing so could cause the cable to become disconnected or result
in damage to the cables and plugs.
When using the L4943 Connection Cable Set
(included)
Of the compatible instruments, the strap buckle can only be used with the DT4261 and
CM series as other models lack strap holes. Exercise care not to subject the cables or
plugs to a mechanical load.
1
Disconnect the clip from the strap buckle as shown in
the gure.
2
Attach the strap to the device.
Strap
-1
Pass the strap through the strap attachment hole on the back of the device.
-2
Pass the strap through the clip.
-3
Secure the strap as shown in the gure.
-2
-3
-1
3
Attach the strap buckle to a compatible instrument and
connect it to the clip that you attached to the device with
the strap.
Example: CM4375-50
When using the L4930 Connection Cable Set or
the L4931 Extension Cable Set (optional)
Hang the device in some way, such as using a magnetic strap,
not to subject the cables and the plugs to stress.
Making measurement
1
Set the compatible instrument to its DC voltage
measurement function and select the appropriate range
as indicated in the accuracy specications.
If using an instrument with DC High V Probe mode, enable DC High V Probe
mode.
2
Connect the device to the compatible instrument with the
connection cable.
Connect the instrument’s COM and V terminals to the device’s OUTPUT L
(black) and OUTPUT H (red) terminals, respectively, with the L4943 (included)
or L4930 (optional).
Connect to
the object under
measurement
3
OUTPUT
3
Connect the device’s probe to the object under
measurement.
N (–)
P (+)
P2000 probes
Red
Black
4
Check the measured value.
The actual measured value is obtained by converting the displayed measured
value based on the output ratio.
Example: For the CM4375, multiply by 11.
Instruments with DC High V Probe mode display the actual measured value,
eliminating the need for conversion.
HIOKI P2000A961-00