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Calibration Mode
It is required to perform 100% air saturation calibration before every
measurement. Check the stable reading in 15 mins after power on. If it
exceeds 100%+/-0.5% range, please performthe calibration in the followings:
1. Place the probe in the air and turn on the meter.
2. When DO reading is stable, press CAL/Esc to enter calibration mode. CAL
icon will be flashing on the left side of LCD during calibration. (Fig. 7)
3. Wait for about 5 seconds or until the reading is stable, press "ENTER" to
complete the calibration. Or terminate the calibration by pressing "CAL/Esc".
4. If it is calibrated correctly, the meter will read approximately 100%. If the
calibration is failed, "ERR#" is displayed on the screen. Repeat the calibration.
USB Interface Capabilities
The USB cable and software (optional kit) are required to transfer data to a PC.
Install the USB driver in the software first before connection. And the connecting
protocol is 9600 bps, 8 data bits, no parity.
7
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