INITIAL PROBE PREPARATION
Probe Preparation
All probes shipped from Hanna Instrument
are dry. To hydrate the probe and prepare it
for use, connect it to the meter and proceed
as follows.
1 Remove the red and black plas-
tic cap. This cap is for ship-
ping purposes and can be
thrown away.
2 Wet the sensor by soaking the
bottom 2½ cm (1") of the probe
in electrolyte (HI 7041S) for 5
minutes.
3 Rinse the membrane (HI 76407A supplied
in the kit with the
meter) with elec-
trolyte while
shaking it gen-
tly. Refill with
clean electrolyte.
4 Gently tap the
sides of the
membrane with
your finger tip
to ensure that
no air bubbles
remain trapped.
To avoid dam-
aging the mem-
brane, do not tap the membrane directly on
the bottom.
5 Place rubber O-Ring properly inside the
membrane cap.
6 With the sensor facing down, screw the
cap clockwise. Some electrolyte
will overflow.
When not in use and during polar-
ization, place the protective cap
supplied in the kit with the meter.
Shipping
cap
black
red
THEN SCREW
BACK ON
THEN TAP
FILL FIRST
5
HI 9142
Range
0.0 to 19.9 mg/l
Resolution
0.1 mg/l
Accuracy
±1.5% Full Scale
Typical EMC
±0.8 mg/l
Deviation
with 4 m cable probe
Calibration
Manual on 2 points
(zero and slope)
Temperature
Automatic from 0 to 30°C
Compensation
(32 to 86°F)
Probe
HI 76407/4 polarographic
with 4 m cable
Battery Type
4 x 1.5V AA
Life
500 hours of continuous use
Environment
0 to 50°C (32 to 122°F);
100% RH
Dimensions
196x80x60 mm (7.7x3.1x2.4")
Weight
425 g (15 oz.); kit: 1.4 kg (3.1 lbs)
SPECIFICATIONS
4
