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User's Manual
Chapter 9 Storage and Calibration
9.1 Notices for Storage
The instrument should be stored in the environment which specified in the user manual, refer to the
subsection 1.2 in chapter 1 Environmental Condition. Do not store the instrument in a place with high
temperature, high humidity, temperature rapid change or easy condensation. The recommended
storage environment is dry and at a temperature of about 20°C.
Keep product's packaging materials (cardboard boxes, padding, plastic bags, etc.) for later delivery of
instruments. Using packaging materials to transport instruments can protect them from sudden
temperature changes, shocks and vibrations, and protect them from damage during transportation.
Do not store the instrument in an environment with dust, fumes or chemical gases.
Avoid direct sunlight.
9.2 Trouble-shooting
No.
Problem
The instrument has no
1
display when pressing the
power switch
2
Measured data displays error
3
Key function failure
4
Communication failure
* Others situation refers to Note in each chapter.
9.3 Notices for Calibration
Verification and Calibration
The precision of standard power meter should over a grade than measured meter. The calibration source of
the standard power meter should be stable. All the instrument power on 30 minute and wait it to stabilize,
and then slowly adjust the output voltage or current of the standard AC power source. Using the power
Instruments.uni-trend.com
Solution
1. Make sure the power cable is well connected.
2. Make sure the power supply is within the allowable power range.
3. Make sure the fuse is not broken.
1. Make sure the operating temperature and humidity within the
allowable range.
2. Make sure the display is away from noise interference.
3. Check whether the test wire is well connected.
4. Check whether the wiring method is correctly connected.
5. Check whether the data display is under the hold state.
6. Reboot the instrument to check whether the measurement is
normal.
1. Check whether the key is stuck.
1. Check whether the communication cable is well connected and use
the cross/direct lines as required.
2. Check whether the instrument's address, communication mode and
baud rate corresponds to the upper computer.
UTE310 Digital Power Meter
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