P/N:110401109668X
4. Symbols 6.Operations
UT-CS09A/D Double insulation
BNC terminal can be used to connect flexible current sensor to read out on oscilloscope
Flex Clamp Current Sensor Grounding
Warning
Warnings：
To avoid false reading, do not use low input impedance settings when using oscilloscopes as readouts.
AC measurement
AC (Alternating Current)
Thank you for purchasing this brand new UNI-T product. In order to safely and correctly use this Warning:
Battery Before measuring, switch off the conductor to be measured. Do not turn on the conductor before the sensor
device, please read this manual carefully, especially the Safety Instructions section.
is locked around the conductor to be measured.
Please keep the manual accessible near the device for future reference. High voltage hazard
1. Introduction Caution:
Comply with European Union standards
2. Open Box Inspection Keep your hands away from the Rogowski ring and conductor to be measured.
3. Safety Instructions Conforms to UL STD. 61010-1, 61010-2-032, 61010-031, 1.Connect the sensor with alternating voltage measure device e.g. multimeter. (see figure 2)
4. Symbols Certified to CSA STD. C22.2 No. 61010-1, 61010-2-032, 61010-031.
5. Structure It is applicable to test and measuring circuits connected at the source of the building’s
CAT IV low-voltage MAINS installation.
6. Operation Instructions
7. Technical Specifications
A. General specifications 5.Structure
B. Operating environment 1. Flexible Rogowski coil
C. Electric specifications 2. Flexible clamp lock
8.Maintenance Rotate the knob according to the arrow mark on the case to lock or unlock
3. Fixed piece
A. General maintenance
4. Power indicator
B. Battery installation & replacement Normal status: constant red light Flex Clamp
Current Sensor
Low power (<3.3V): flash once for every 1s period. Please replace the batteries.
5. Switch
1. Instruction A. 30A
UT-CS09A/UT-CS09D is a stable, safe and reliable 3000A AC Rogowski flex Clamp Current Sensor For measuring 1.5A~30A
(hereinafter called current sensor). The core of the design is the Rogowski coil. B. 300A
For measuring 30A~300A
Warning: C. 3000A
For measuring 300A~3000A
To avoid electric shock or injury, please read Safety Instructions and Warnings before operating this D. OFF
product. Switch off the sensor
6. Corresponding output voltage
2. Open Box Inspection A. 30A range: 1A -> 100mV
Open the package box and take out the device. Please check whether the following items are deficient B. 300A range: 1A -> 10mV
C. 3000A range: 1A -> 1mV
or damaged and contact your supplier immediately if they are. 7. Voltage signal output terminal
The corresponding voltage output of AC current measured through flexible current sensor. Figure 2
User manual ----------------------- 1 pc
BNC adapter------------------------ 1 pc 2. Unlock the Rogowski coil according to Section 5.2 (see figure 3).
Battery: 1.5V AAA----------------- 3 pc
3. Safety Instructions
In this manual, a Warning identifies conditions and actions that pose hazard(s) to the user or the
test device.
This device strictly follows CE standards: IEC61010-1; IEC61010-031; IEC61010-2-032 as well as
CAT IV 600V, RoHS, pollution grade II, and double insulation standards.
If the clamp is used in a manner that is not specified in this manual, the protection provided by the
device might be impaired.
Flex Clamp
1) Do not use the device if the rear cover or the battery cover is not covered up. Current Sensor
2) When measuring, keep fingers behind the finger guard on the measuring head. Do not touch Flex Clamp
Current Sensor
bare cables, connectors, unoccupied input terminals or circuit being measured.
3) Before measuring, the switch should be on correct position. Do not switch positions during
measurement.
4) Do not use the clamp on any conductor with voltages higher than DC 1000V or AC 750V.
5) Use caution when working with voltages above 33V AC rms. Such voltages pose shock hazard.
6) Do not use the device to measure current higher than specified range. If current value being
measured is unknown, select 3000A position and reduce accordingly.
7) To avoid false reading, replace the battery if “POWER” indicator flashes. Remove the battery
if the sensor is left unused for a long time.
8) Do not change the internal circuit of the device.
9) Do not store or use the sensor in high temperature, high humidity, explosive, or strong magnetic
field environments.
10) Use soft cloth to clean the case, do not use abradants or solvents. Figure 1
11) Do not use when the jaw or "jaw end" is worn. Figure 3
3. Use the Rogowski coil to wrap and lock around the conductor to be measured. (see figure 4) (2) UT-CS09D AC current measurement:
7. Technical specifications
A. General specifications Corresponding Accuracy (at
Range Resolution Frequency Response
Max output voltage:---------------------------- 3.00V (AC) voltage central position)
Over range indication:------------------------ reading> 3.00V (AC)
30A 0.1A ~100mV/1A
Low power indication:------------------------ “POWER” indicator flashes, battery voltage<3.3V,
please replace the battery
300A 1A ~10mV/1A ±(3%+5) 45Hz~500Hz
Sensor type:------------------------------------- Rogowski clamp sensor
Position error: ---------------------------------- At central position: ±3.0% of reading
3000A 10A ~1mV/1A
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") Central optimum
±(3%+5)
Flex Clamp UT-CS09D Length= 45.7cm (18") Additional measurement location
Current Sensor
Conductor trace line:--------------------------- Max diameter: 14cm accuracy range
when measuring 35mm(1.4”)
Electromagnetic field interference:--------- unstable performance or incorrect reading Additional 1.0% Zone A
outside of away from center
Battery:-------------------------------------------- AAA 1.5V (3pcs) optimum location
(Assume no 50mm(2.0”)
additional 1.5% Zone B
external electric away from center
B. Operating environment or magnetic field）
Max altitude:------------------------------------- 2000m 60mm(2.4”)
additional 2.0% Zone C
away from center
Safety standard:-------------------------------- IEC61010-1; IEC61010-031
IEC61010-2-032; CAT IV 600V
Pollution grade:---------------------------------- 2 8. Maintenance
Information of usage:--------------------------- Indoor A. General maintenance
Operating temperature:------------------------ 0˚C~50˚C Warning: remove the test probes before open the rear cover or it may pose a shock hazard.
Figure 4
Operating humidity:-----------------------------≤80%RH a. The maintenance and service must be implemented by qualified professionals or designated
Storage:------------------------------------------- -20 ˚C ~ 60 ˚C (≤80%RH) departments.
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 b. Clean the case with a dry cloth. Do not use abradants or solvents
over the range, please select appropriate range (30A/300A/3000A)
6. Improper operation example (see figure 5a, 5b). B. Battery installation & replacement
C. Electric specifications
Accuracy:----------------------------------------- ±(%of reading+ numerical number of least significant The sensor uses three AAA 1.5V alkaline batteries for operation.
digit) 1 Year Warranty To install or replace the battery:
Environment temperature:-------------------- 23 ˚C ± 5 ˚C 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
Environment humidity:------------------------- ≤80%RH
is observed.
Temperature coefficient:---------------------- 0.2×(specified accuracy)/ ˚C (<18 ˚C or >28 ˚C)
c. Use batteries of the same type
d. Replace the battery cover and screw up.
(1) UT-CS09A AC current measurement:
Flex Clamp Corresponding Accuracy (at
Current Sensor Range Resolution Frequency Response
voltage central position)
30A 0.1A ~100mV/1A
300A 1A ~10mV/1A ±(3%+5) 45Hz~500Hz
3000A 10A ~1mV/1A
Central optimum
Additional ±(3%+5)
accuracy range measurement location
when measuring
outside of 15mm(0.6”)
Additional2.0% Zone A
optimum away from center Flex Clamp
Figure 5a Figure 5b Current Sensor
location
(Assume no 25mm(1.0”)
additional 2.5% Zone B
away from center
Shut down external
After measurement, switch to OFF position to shut down the device. electric or
35mm(1.4”)
Buzzer magnetic field） additional 3.0% Zone C
away from center
The buzzer will go off at effective range.
