VWR PH-130 - Switching Meter On and Off

- 6 -
VWR Collection PH-130 pH-meter instruction manual v1.0x
6. SWITCHING THE METER ON AND OFF
After switching the meter on with the button, the memory test proceeds.
If the test ends successfully, the meter enters the measurement screen with
settings entered before switching it previously off. In case of detecting the
manufacturer‘s calibration data loss, the following information will appear:
Pressing the button accepts standard manufacturer‘s calibration
parameters and enters the measurement screen. Such situation will be
repeating each time the meter is switched on and requires sending the meter
to the manufacturer for servicing.
In case of the user‘s data loss (i.e. the pH electrode characteristic), the
following information will appear:
Pressing the button accepts and records in the memory the standard
pH electrode characteristic and enters the measurement screen. In such
case, calibration of the pH electrode is necessary. Analogical situation occurs
in case of other measuring functions. Repeating of the situation after
switching the meter on again informs about the EEPROM memory
malfunction and requires sending the meter to the manufacturer for servicing.
Switch the meter off by pressing the button. If the meter is powered only
by the rechargeable battery, it turns off after the time of non-use set by the
user (description in the chapter 17.3). This function is deactivated during
calibration, while memorising results or when work with the power adapter.