Setting Up
The instrument can be used on battery or AC power. It is not neces
sary to remove the battery before transferring to AC power.
AC Operation
•
Only use the approved power adaptor supplied
•
Check that the adaptor is the correct voltage for your power
supply
•
Plug the adaptor into the power socket at the back of the
meter, then connect to the AC supply.
Battery Installation
•
•
•
•
•
Approximately 24 hours of continuous use is afforded by
the 9V battery.
The BAT flag appears on the display to indicate a low
battery.
To install or replace the battery, slide off the back cover
Remove the old battery and insert a new one ensuring that
the polarity is correct
Replace back cover.
-J�
- /�
Battery Snap
•
Figure 1. Bottom view of instrument showing power connections
3
Instrument Test Procedure
Refer to Figure 2
•
Switch
the instrument on using the black switch on the
back panel. The meter should start up in conductivity mode.
•
Clear any calibration data by first pressing the Clear key and
then holding the Enter key down for 5 seconds
•
Display the cell constant by pressing K. The units should
be /cm.
If
units are
Im,
press K again. Adjust the K value (if
necessary) to 1.000/cm using the "fr-lJ.keys.
•
Press the Mode key to display each mode sequentially. With
no cell connected, the values displayed should be as fol
lows:
Conductivity
O.OOµS/cm
TDS
0.00mg/L
Resistivity
---MO.cm
Salinity
-L
Concentration
1000c
oc
oc
CONDUCTIVtTY PLATINISING
CCU.
ttM,
PLATE1
-
-
'-'"
_, OFF
PLATE2
._,
... ";,:=.;;..: .. "::,-... ,....., ... ..,_,.,""�
ss=
±1 digit
±1 digit
(Over-range)
(Under-range)
Open Circuit
'"L
°
'""-"'
o,
"'
Figure 2: Rear View of RE388Tx
4
