76
• Each meter is supplied complete with a 9V battery. Remove the
battery compartment cover on the back of the meter (see
page 16). Install the battery while paying attention to its
polarity.
• Connect the probe to the meter securely
by aligning the pins with the socket
and pushing the plug in.
• Make sure that the meter has been calibrated before taking any
measurements (see "Calibration" section).
• Immerse the conductivity probe into the
sample, with the holes on the shaft
completely submerged.
If possible, use plastic beakers or con-
tainers to minimize any EMC interference.
• Tap the probe lightly on the bottom of the beaker to remove any
air bubbles which may be trapped inside the PVC sleeve.
• Turn the instrument on by pressing the ON/OFF key.
• For HI 8633 and HI 8734:
Take the temperature of the solution
with a ChecktempC or another accurate
thermometer.
Press the COND/TEMP key for HI 8633 or TDS/TEMP for HI 8734
to display the temperature and adjust the temperature knob to
that of the solution e.g. 20°C.
• For HI 8733:
Adjust the TEMPERATURE COEFFICIENT
knob to 2% to compensate for the
temperature effect of average solutions
(to determine exact value for a particu-
lar solution, see page 14).
OPERATIONAL GUIDE
°C
COND.
TEMP.
TDS
TEMP.
ºC
2.5
2
1.51
0.5
0
TEMPERATURE COEFFICIENT
1) Liquid Crystal Display
2) Measurement range selection keys
3) Manual temperature compensation knob
4) TDS/temperature selection key
5) ON/OFF key
FUNCTIONAL DESCRIPTION &
SPECIFICATIONS OF HI 8734
Range 0.0 to 199.9 / 0 to 1999 mg/L
0.00 to 19.99 g/L
Resolution 0.1 / 1 mg/L
0.01 g/L
Accuracy ±1% Full Scale
(@ 20°C / 68°F) excluding probe error
Typical EMC ±2 % Full Scale
Deviation
Calibration Manual, 1 point, through trimmer
Temperature Manual, 0 to 50°C (32 to 122°F)
Compensation with β = 2%/°C
TDS factor 0.5
Probe (included) HI 76301D with 1m (3.3') cable
Environment 0 to 50°C (32 to 122°F); RH max 100%
Battery Type 1 x 9V, alkaline (IEC 6LR61)
Life Approx. 100 hours of continuous use
Dimensions 164 x 76 x 45 mm (6.5 x 3.0 x1.8")
Weight 250 g (8.8 oz.)
