UNI-T UT240 Plus TRUE RMS Power and Harmonics Clamp Meters Instruction Manual
- June 9, 2024
- UNI-T
Table of Contents
UNI-T UT240 Plus TRUE RMS Power and Harmonics Clamp Meters
UT240 Interface and Software Operating Instruction
Computer interface and software operation instruction (UT240)
Hardware and Software Requirements：
- 500Mhz Pentium processor or above;
- 1 free USB port;
- Screen resolution 600*800 or above；
- 512M RAM or above;
- CD-ROM；
- Windows98se/ME/2000/xp /windows 7 ；
Hardware Installation：
If using the USB interface cable provided by the multimeter, insert the
infrared transmission end of the cable to the receiving slot on the back of
the multimeter, and then connect the other end of the USB interface to a
computer. As shown
Software Installation：
- For computer running Windows98se/me/2000/xp/windows 7，follow these steps to install the software： Insert the provided CD into CD-ROM of the computer；
- Open “My Computer” from Desktop, double-click CD(“X”)”
- After double-clicking UT240_V1.00.EXE, installation starts, see picture 2；
- Follow the software prompt，press “NEXT”, then “NEXT” again，user may select installation directory, see picture 3;
- Clink “Finish” to end installation, as shown in picture 4
- After software installation, “DMM” can be located “START” – “PROGRAMS” in the “UT240” sub-folder, double click “UT240 V1.00” see picture 5.
Interface Software Operation
If program is correctly installed and the multimeter is properly connected，
run PC interface program， press “START” － “PROGRAMS” – “ＤＭＭ” – “UT240” –
“UT240 V1.00”， Programs starts, shown in picture 6;
After connecting the multimeter to the computer， first power on UT240, press
the USB button, and the communication port will switch on. Data is now ready
for transmission from UT240 port to PC port. Ensure UT240 is in the data
transmission stats, the PC start receiving and recording data. The following
picture shows some important function keys and displays.
The program records all the data in the measuring process and creates graphs using these data, as shown in picture 7. Within the Graphing Area, functions include: SAVE, CLEAR, GRAPH PAGE SELECTION, and FULL SCREEN. Can also set the range for the data of the graph, size of the graph, and the displaying method. Please see detail below:
- Clear Graph： Clear all existing graphs in the program.
- Save Graph ：Save the displaying graph in “BMP” format, in desired folder directory; may be used for other program. (e.g. Printing)
- Record per Page：Number of data record within the graph per page. The default record is 100, record number may be changed. Default record of 100 means 100 data readings are used in the display graph.
- First Page ： Jump to first saved graphing page.
- Previous Page : Jump to previous saved graphing page (For example, jump to graph page 999 from page 1000).
- Last Page ： Jump to the last saved graphing page.
- Next Page ： Jump to the next graphing page (For example, jump to graph page 1001 from page 1000).
- Zoom Graph ： Enlarge the graph to see the graph more clearly.See picture 9:
The program can save and clear data from UT240; can also save or ignore the duplicate data and choose sampling interval. See picture 10.
- Clear Data ：Delete current data records.
- Save Data ：Save current data records, can save as EXCEL （.xls）, or（.txt）. File can be re-opened in the program later.
- Open Data File ：Open previously saved file in (*.xls) format.
- Print Data : Print existing records
- Duplicate Data： Save same records when current data duplicate the previous, if not, measurement will stay longer each time. No matter what choice it is, every data including same records will be taken into graphing area.
- Sampling Interval : Automatically setup for interval time between each two samplings, taking Second as the Unit if longer sampling is performed. When the interval time is 10, data recording will be allowed to start again after at least 10 seconds
- Insert data from UT240: Very useful and able to output data from UT240 at any time
Alarm setup Instruction
- The alarm function can be set up based on provided data. “SetMax” in picture 11 represents Max limit alarm and “SetMin” for Min limit alarm. Setup should be done by users.
- Once finished, the alarm range will be shown by red dial hands. Shift and range values both need to be shown in integral numbers.
- Compared with the current integral value and if the data outreaches setup range, OL icon will be flashed on the dial hands as in Picture 12, or beep through the loudspeaker of the computer until the measurement data is down with the setup range.
Record Setup：
All measured data are recorded, and it is up to users for Save or Clear them.
However, recording is not infinite and will slow down computer operation when
exceeding a certain amount. Record number is closely connected with computer
configuration, so please select the number under the “Record” menu based on
your computer and reference data above.
Record Number Selection:
Recording stops when the total record amount in the recording area has reached
the setting number. For example, the default number is 10000, the recording
doesn’t keep going when the number of record area totals 10000. The software
is still running, however, does not release any record data and only does it
when users change the default
Control Area( Computer instructions control UT240 corresponding operations
)
- Menu: Power selection
- Harm: Harmonic measurement model
- Select: phase selection and gross power measurement
- Sum/clear: Total count
- Up: ↑
- Down: ↓
- Max/min/cur: Maximum value, Minimum value
- Hold: Data sustained
- Back light: Backlight
- StopAuto/savedata: Automatically stop data logging
- Auto save data: Automatically save data
- StopAuto/loadMem: Data Recording state
- Auto load Memory: Data upload
- Clear Memory: Clear UT240 memory
- ExportMemoryData: Insert UT240 data
- Auto power: Auto power off Time selection
- Back light: Backlight
- Freq Mode: Frequency selection