horiba U-51, Инструкция по эксплуатации

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3 Basic Operation
15
Note
Check that all sensors are attached.
3.
Press the control unit's POWER key for about 1 second to turn the power ON.
Leave the unit for at least 30 minutes to condition the sensors.
Note
The operation keys are designed to operate using the pad of a finger, sharp objects can tear the
control unit cover damaging the operation keys.
Tip

The procedure for immersing the sensor probe in the pH standard solution is the same as that
described in “ 3.3.1 Auto calibration ” (page 41).
Auto calibration can be performed using the same pH 4 standard solution that was used in the
conditioning procedure.

Immersing the sensor in the standard solution is generally required for sensor conditioning, but a
voltage supply is required for DO sensor conditioning. Turning ON the power of the control unit is
necessary during sensor conditioning.

DO value will be higher than usual for a while after turning power ON.
See “ 6.4.2 Conditioning of DO sensor ” (page 105).
3.1.6 GPS (U-52G, U-53G, U-54G)
The GPS position measurement precision is proportional to the GPS position measurement
time. When the position measurement precision increases, the position measurement time
also increases. See "

GPS locating accuracy" (page 17) for how to set the position
measurement precision. See "

GPS locate" (page 15) below for how to check acquired
GPS data.

GPS locate
1.
Press the right (

) key to switch the display to the "SETTINGS" screen.
2.
Press the down (

) key to move the cursor to "System", then press the ENTER key.
3.
Press the down (  ) key to move the cursor to "GPS locate", then press the ENTER
key.
4.
The message "Press ENT key to start position measurement." appears. Press the
ENTER key.