2
operation is confirmed.
The model 6250 and model 6219 are used 4.01pH, 7.00pH and 10.01pH
standard buffer. The model 6250C and model 6219C are used 4.00pH,
6.86pH and 9.18pH standard buffer. Make sure the model number is that
you ordered.
POWER SOURCE
The Jenco model 6250 operate on either six AAA size alkaline batteries or
AC adaptor. The model 6219 operate on either six AA size alkaline
batteries or AC adaptor. Insert batteries as described below.
BATTERY INSTALLATION
1. Replace batteries when the LOBAT annicator on the LCD display
starts to flash. The meter can operate within specifications for
approximately one hour after LOBAT starts to flash. But you
must replace the new batteries when OFF is display, ie. automatic
turn OFF to prevent incorrect measurements.
2. AOpen battery compartment by pushing closure up. This is most
easily open by using a coin (such as a penny) and inserting it into
the slot on the side of the meter. (model 6250)
2. B Open battery compartment by pushing closure up and lift the
battery cover to expose the battery compartment.(model 6219)
3. Insert the batteries and ensure polarity is correct as shown in
Figure 1
.
4.
Replace battery compartment cover.
TURN OFF INSTRUMENT
When the instrument is not in use, press the ON/OFF or POWER key to
turn off the instrument. Un-pluging the AC adaptor from the instrument or
from the AC line does not turn off the instrument. It would automatically
switch to the internal batteries. The instrument will continue to operate on
the internal batteries.
