Ground/Leakage Current Measurement
1. Set the rotary switch to the mA or A position.
2. Place the clamp around the electrode or ground rod to be measured.
3. Read the value of leakage current displayed on the LCD.
Setting the Sampling Interval
1. Press the FUNC button until the letters "SEC" are shown on the upper row of LCD.
2. The unit shows the current sampling interval in seconds.
3. Press the
▲
button to increment the value by 1 second. If the button is held down, the rate of
increment accelerates. The value can be set from 0 to 255 seconds. The set value will roll over to 0
when the maximum value of 255 seconds is reached.
4. Press the FUNC button several times until the upper row LCD does not show any symbols.
NOTE: The sampling interval is used for data logging and RS-232C output timing.
Data Logging
The unit will start data logging if the "REC
▲
" button is pressed, and the symbol "REC" will be shown
on the LCD. Data will be recorded at the specified sampling interval. Data logging will be stopped if
the memory is full, or the unit detects a low battery condition, or the "REC
▲
" button is pressed
again.
NOTE: With sampling time greater than zero the Auto Power Off feature is disabled in this mode
NOTE: If the sampling interval is set at 0 seconds, one set of data is recorded. To record the next set
of data, press the "REC
▲
" button again. The record number and "REC" symbol is displayed for
approximately 1 second.
Downloading Data to a PC (ASCII format)(DET20C only)
1. Connect the RS-232C cable to the unit and a PC.
2. Run any application software which can accept ASCII data.
3. Press the FUNC button until the symbol "dL" is shown in the upper row on the LCD. The number
of records in the memory is shown in the lower row on the LCD.
4. Press the "REC
▲
" button to down load all the data stored in the memory. The symbol " -- " is
shown next to the symbol "dL" when data is transferring to PC in ASCII format.
5. The process of down loading can only be halted by turning the instrument off.
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