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3. Use the Rogowski coil to wrap and lock around the conductor to be measured. (see figure 4)
Flex Clamp
Current Sensor
Figure 4
4. Turn on the sensor, then power on the conductor.
5. Read the value displayed on the multimeter. (Max Value=3.0V). If the current to be measured is
over the range, please select appropriate range (30A/300A/3000A)
6. Improper operation example (see figure 5a, 5b).
Flex Clamp
Current Sensor
Figure 5a
Figure 5b
Shut down
After measurement, switch to OFF position to shut down the device.
Buzzer
The buzzer will go off at effective range.
7. Technical specifications
A. General specifications
Max output voltage:---------------------------- 3.00V (AC)
Over range indication:------------------------ reading> 3.00V (AC)
Low power indication:------------------------ "POWER" indicator flashes, battery voltage<3.3V,
please replace the battery
Sensor type:------------------------------------- Rogowski clamp sensor
Position error: ---------------------------------- At central position: ±3.0% of reading
outside central area: additional error according to zone
ABC. (see Electric specification)
Drop test: ---------------------------------------- 1 meter
Measuring head size:------------------------- UT-CS09A Length=25.4cm (10")
UT-CS09D Length= 45.7cm (18")
Conductor trace line:--------------------------- Max diameter: 14cm
Electromagnetic field interference:--------- unstable performance or incorrect reading
Battery:-------------------------------------------- AAA 1.5V (3pcs)
B. Operating environment
Max altitude:------------------------------------- 2000m
Safety standard:-------------------------------- IEC61010-1; IEC61010-031
IEC61010-2-032; CAT IV 600V
Pollution grade:---------------------------------- 2
Information of usage:--------------------------- Indoor
Operating temperature:------------------------ 0˚C~50˚C
Operating humidity:-----------------------------≤80%RH
Storage:------------------------------------------- -20 ˚C ~ 60 ˚C (≤80%RH)
C. Electric specifications
Accuracy:----------------------------------------- ±(%of reading+ numerical number of least significant
digit) 1 Year Warranty
Environment temperature:-------------------- 23 ˚C ± 5 ˚C
Environment humidity:------------------------- ≤80%RH
Temperature coefficient:---------------------- 0.2×(specified accuracy)/ ˚C (<18 ˚C or >28 ˚C)
(1) UT-CS09A AC current measurement:
Corresponding
Accuracy (at
Range
Resolution
voltage
central position)
30A
0.1A
~100mV/1A
±(3%+5)
300A
1A
~10mV/1A
3000A
10A
~1mV/1A
Central optimum
Additional
±(3%+5)
measurement location
accuracy range
when measuring
15mm(0.6")
outside of
Additional2.0%
Zone A
away from center
optimum
location
25mm(1.0")
(Assume no
additional 2.5%
Zone B
away from center
external
electric or
35mm(1.4")
magnetic field）
additional 3.0%
Zone C
away from center
(2) UT-CS09D AC current measurement:
Range
Resolution
30A
0.1A
300A
1A
3000A
10A
Central optimum
Additional
measurement location
accuracy range
when measuring
35mm(1.4")
outside of
away from center
optimum location
(Assume no
50mm(2.0")
external electric
away from center
or magnetic field）
60mm(2.4")
away from center
8. Maintenance
A. General maintenance
Warning: remove the test probes before open the rear cover or it may pose a shock hazard.
a. The maintenance and service must be implemented by qualified professionals or designated
departments.
b. Clean the case with a dry cloth. Do not use abradants or solvents
B. Battery installation & replacement
The sensor uses three AAA 1.5V alkaline batteries for operation.
To install or replace the battery:
a. Switch off the sensor and remove the test probes from the terminal input.
b. Unscrew the battery cover, remove the cover and install new batteries ensuring that the correct polarity
is observed.
c. Use batteries of the same type
d. Replace the battery cover and screw up.
Frequency Response
45Hz~500Hz
Flex Clamp
Current Sensor
Corresponding
Accuracy (at
Frequency Response
voltage
central position)
~100mV/1A
±(3%+5)
~10mV/1A
45Hz~500Hz
~1mV/1A
±(3%+5)
Additional 1.0%
Zone A
additional 1.5%
Zone B
additional 2.0%
Zone C
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