Hanna Instruments HI 98308 - Manual (Page 2)

OPERATION
• Remove the protective cap and turn
the PWT on by sliding the switch on
the top of the meter.
• Immerse it into the solution to be
tested without exceeding the maxi-
mum immersion level.
• Stir gently and wait for the reading to stabilize.
PWT automatically compensates for temperature
variations.
• Measurements are displayed in µS/cm unit.
HOW TO USE THE CHART
• The following diagram shows the relation be-
tween conductivity (µS/cm) and NaCl concen-
tration (mg/L) of a watery solution.
• These are some typical conversions of measure-
ments performed with PWT:
µS/cm reading Resistivity mg/L NaCl
99.9 10 k
Ω
48
10 100 k
Ω
4.6
1 1 M
Ω
0.4
0.1 10 M
Ω
0.02
BEPS AND BATTERY REPLACEMENT:
PWT is provided with BEPS (Battery Error Pre-
venting System) which avoids any erroneous reading
due to low batteries level, by automatically switching
the meter off.
To replace the batteries, slide off the battery
compartment cover and replace all four 1.5V
batteries, while paying attention to the correct
polarity.
Batteries should only be replaced in a non-
hazardous area and using the battery type
specified in this instruction manual.
CALIBRATION
• Immerse the PWT in the HI 70033 calibration
solution, without exceeding the maximum im-
mersion level.
• Allow the reading to stabilize, and then using
the supplied screwdriver adjust the calibration
trimmer on the meter side until the display
shows "84.0".
PROBE REPLACEMENT
For replacing the probe, contact your Dealer or
the nearest Hanna Service Center.