UNI-T UT-P4100A ACDC Current Probe Instruction Manual
- June 21, 2024
- UNI-T
Table of Contents
UT-P4100A ACDC Current Probe
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Product Specifications
-
Type: UT-P4100A (100A/600kHz), UT-P4100B
(100A/2MHz) -
Max Current: 100A DC+Pk
-
Max RMS Value: 70.7 Arms
-
Bandwidth (-3dB): 600kHz (UT-P4100A), 2MHz
(UT-P4100B) -
Range: 100A or 10A
-
Current Transfer Ratio: 0.01V/A or 0.1V/A
Product Usage Instructions
Warnings and Safety Notices
-
Warning: To avoid short circuits and
accidents, do not exceed 600VAC during testing. -
Attention:
-
Protect the probe from sudden temperature changes or impacts to
prevent damage. -
Avoid using the probe in dusty or wet environments.
-
Handle the probe with care to prevent malfunction.
-
Operation Guidelines
-
Power Switch: ON for power on, OFF for power off.
-
Power Indicator: Green light indicates power on.
-
Battery Low Voltage Indicator: Red light indicates low battery
voltage (<6.5V). -
Range Switch: Press to switch between High (100A) and Low (10A)
ranges. -
Auto Zero Button: Perform zero degaussing for accurate
measurements.
Frequently Asked Questions (FAQ)
Q: What should I do if the battery voltage is low?
A: If the battery voltage is below 6.5V,
replace the battery with a 9V alkaline battery for longer
usage.
Q: Can the probe be used on naked conductors?
A: No, the probe is not designed for use on
naked conductors to prevent accidents and injuries.
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Low Frequency ACDC Current Probe
UT-P4100A (100A/600kHz) UT-P4100B (100A/2MHz)
www.uni-trend.com
Preface
First of all, thank you for purchasing our products, this instruction manual
is the description about the function, usage, operation attention points, etc.
Before use, please read the instructions carefully and use correctly.
Manual annotation will use the following symbols to distinguish.
This symbol means it is harmful to the machine and human body; you must strictlyfollowthe instruction manualtooperate.
Warning
In the case of wrong operation, the user risk injury. The content under this mark records the relevant matters needing attention to avoid such dangers.
The user may suffer minor injuries and material damage with the wrong Attention operation. To avoid such situation, the matters under this mark need attention.
Note This symbolizes important note about how to use the machine.
Warning
To avoid short out and deadly accident, the circuit under test should not
surpass 600VAC This probe is not designed for naked conductor. Do not touch
the conductor under test and the transducer probe during measuring. When the
oscilloscope is connected to other test terminal, please be careful for these
points:
Please use the fundamental insulation equipment with fitful voltage range and
pollution rate while the probe’s test terminal is connected to the other
terminals.
Please do not surpass the safe voltage range if the fundamental insulation of
the test terminal cannot be met.
Please operate under correct guidance about electric safety. There could be
deadly electric shock if the device is damp or the users’ hand is wet.
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Attention
The probe consists of precision components such as Magnetic core and Hall
sensor, which could be possibly damaged because of the sudden temperature
change or external force impact. Please be careful for vibration or impact.
The product is neither waterproof nor dustproof; please do not operate in the
environment filled with dust and water.
The probe’s upper and lower contact surfaces is made by precise polishing
process. Please protect this part or the probe could be malfunction.
Note When the battery voltage is lower than 6.5V, the probe will indicate a
low voltage alert, please
change the battery. You can use a 9V alkaline battery for longer time.
UT-P4100A/B Brief Summary
Type
UT-P4100A UT-P4100B
Max current (DC+Pk)
Max RMS value
Band width (-3dB)
Range
Current transfer ratio
100A 100A
70.7 Arms
600kHz
70.7 Arms
2MHz
100A 10A 100A 10A
0.01V/A 0.1V/A 0.01V/A 0.1V/A
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Catalog
UT-P4100A/B Brief Summary ……………………………………………………………….. 3 Catalog
………………………………………………………………………………………………… 4 1.
Summary………………………………………………………………………………………… 5 2. Introduction about probes and
accessories ………………………………………….. 5 3. Electronic Characteristics
…………………………………………………………………. 7 4. Operating instruction
……………………………………………………………………….. 9 5. Mechanic
Characteristics………………………………………………………………… 10 6. Environment characteristics
……………………………………………………………. 10 7. Maintenance………………………………………………………………………………….. 11
8. Troubleshoot …………………………………………………………………………………. 11 9. Packing List
………………………………………………………………………………….. 12
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1. Summary
UT-P4100A/B is a kind of current probe that can measure both DC and AC current
up to 100A (70.7Arms). The band width of UT-P4100A is 600 kHz (-3dB), and the
band width of UT-P4100B is 2MHz (-3dB).UT-P4100 series provide two range
option of 10A and 100A, the users may choose the correct range according to
the current value. The auto zero function make it easy for the users to
operate, and it also has power and low voltage indicator as well as overload
sound alert. The probe can be powered by battery or external power supply,
which makes the measurement a lot more convenient. With standard BNC output
port, the probe can connect to any oscilloscope, and it can also connect to
multimeter with BNC-banana plug. The UT-P4100 series is usually used in power
supply, motor drive and power supply.
2.Introduction about probes and accessories
Probe
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Power Switch: ON: Power on and probe work; OFF: Power off and probe do not
work.
Power indicator: When the power switch is on, the indicator is lighted green.
Battery Low Voltage Indicator: when the voltage of the battery is lower than
6.5V, the power
indicator will light red, reminding the users to change battery. Range Switch:
press the button switch to change between H and L Range. Range Indicator:
indicating the current Range choice. H level: 100A; L level: 10A. Auto Zero
button: to make accurate measurement, users need to do zero degaussing before
measuring to avoid the influence of environment factors like earth magnetic
field and temperature shift. Auto Zero Indicator: when Auto Zero, the
indicator is lighted on and in green and will be turned off when the Auto Zero
is finished. Clamp: the clamp used for current measurement; the max diameter
for the cable is 12mm. External Power Supply Plug: powered by external DC
supply. Battery Box: standard 9V alkaline battery is used. Please turn off the
switch and disconnect from the conductor under test & oscilloscope when
changing battery.
Accessories
Output Cable: 1 meter
Power Supply AdaptorDC12V/1.2A
6
3.Electronic Characteristics
Test Condition: 23, 60%RH, cable under test get through the test center, load resistance 1M
Range level
L
H
Current range
50mA~10A Peak
1A~100A Peak
Attenuation accuracy Typical DC precision
Band-width (-3dB)
UT-P4100A UT-P4100B
Max current VS frequency characteristics curve
Phase shift
0.1V/A
0.01V/A
3%±50mA
500mA~40A Peak4%±50mA 40A~100A Peak±15% Maximum
DC-600kHz Refer to the typical Amplitude frequency
characteristic (Figure 1)
DC-2MHz Refer to the typical Amplitude frequency
characteristic (Figure 2)
Figure 3
DC65Hz<1.5°
DC65Hz<1°
Typical DC linearity
The typical DC linearity at H level(0.01V/A), Figure 4
Rise time
UT-P4100A UT-P4100B
583ns 175ns
Max operation current
Please refer to voltage and current rating table
Max operation voltage
Please refer to voltage and current rating table
Max floating voltage
Please refer to voltage and current rating table
Operating voltage RMS
CATI 600V CATII 600V CATIII 300V
Common mode voltage RMS
CATI 600V CATII 600V CATIII 300V
Typical battery type and life. Low power indication Overload indication
9V alkaline layer-built battery/ 15H
When battery voltage is lower than 6.5V, battery indicator will turned red and
alert.
When the current under test surpasses the range, the buzzer will buzz
Voltage and current rating table
Parameter
Max operating current (A) H(0.01V/A) L(0.1V/A)
DC
100
10
DC+AC peak value
100
10
Max operating voltage (V)
600
600
Max floating voltage(V)
600
600
7
AC peak value
100
AC peak to peak value
200
RMS CAT III
70.7
RMS CAT II
70.7
RMS CAT I
70.7
10
600
600
20
1200
– –
7.07
300
300
7.07
600
600
7.07
600
600
Figure 1 UT-P4100A Typical Gain VS Frequency curve Figure 2 UT-P4100B Typical
Gain VS Frequency curve
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Figure 3 Max current VS Frequency curve
Figure 4 Typical DC linearity (0.01V/A level)
4.Operating instruction
Set the coupling mode of the oscilloscope to DC and the input impedance to 1M;
To make it easy to read, users can set the display unit of the oscilloscope
from voltage to current display. If user’s oscilloscope doesn’t have such
function, user have to manually set the corresponding attenuation ratio, for
instance, if the probe is H level (0.01V/A), the oscilloscope should be 100X;
if the probe is L level (0.1V/A), oscilloscope is 10X. User can connect the
BNC output port with the input port of the oscilloscope with standard double
terminal BNC cable.
Turn the switch to ON, and the power indicator will light up green.
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According to the value of the current under test, choose the correct range by
pressing button. Attention: Different ranges correspond to different
attenuation ratio of the oscilloscope. Press the Auto Zero button. The buzzer
will beep for twice, or it will have a long and continuous beep
meaning the failure of Auto Zero .The external magnetic field can have a
little influence to the DC zero, so do not move the device after Auto Zero.
Open the clamp of the probe and clamp the conductor under test. Attention:
There’s direction tip on the current probe clamp. If the direction of the
current fits the tip, output will be positive; On the contrary, the result is
negative. Adjust the vertical sensitivity of the oscilloscope to get a stable
waveform.
5.Mechanic Characteristics
Size of the front current clamp
Size of the back output box
Operation altitude Maximum diameter of the conductor under test Length of the
cable connecting current clamp and output box Length of double terminal BNC
cable
Weight
About 1002060mm About 1373335mm 0~2000 meter 12mm ø 1 meter 1 meter About 223g(without battery)
6.Environment characteristics
Operating temperature Storing temperature Operating relative humidity
Pollution Degree
0+50 -20+80 0 to +40, 95%RH +40~+50, 45%RH
Level 2
10
7. Maintenance
If the product is in the warranty period and used correctly, and at the same
time the malfunction is caused by the flaws of product itself and have not
been disassemble, the company will give free repair to the product. Clamp:
Please keep the clamp clean. After long time use, please use soft cloth
together with alcohol
to erase the dirt. Please keep the clamp away from damp environment, not to
mention direction contact with water. Handle: Please use clean cloth or sponge
to clean the handle. Please use little alcohol instead of water to erase the
dirt and parch it. To maintain the performance of the product, there can be
one check or calibration every year.
8. Troubleshoot
Problem
No output signal or amplitude is low
Power indicator is off when the probe is on.
Reason Power is off Oscilloscope is AC mode
Clamp isn’t closed Battery voltage is lower than 6.5V
Treatment
Turn on the power. Please set it to DC mode Check the clamp, close it
completely.
Change the battery
Amplitude is half
The input impedance is 50 Set it to 1M
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9.Packing List
Packaging Name Current probe 9V battery DC12V/1.2A adaptor BNC output cable
Tool box Instruction book Warranty card
Quantity 1 1 1 1 1 1 1
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