User Guide

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SPECIFICATIONS:
RANGE -999 to +999 mV
RESOLUTION 1 mV
ACCURACY
(@20°C/68°F) ±5 mV
TYPICAL EMC DEVIATION ±5 mV
ENVIRONMENT
0 to 50C (32 to 122F); 95% RH
BATTERY TYPE 4 x 1.5V alkaline (included)
BATTERY LIFE approx. 700 hours
of continuous use
DIMENSIONS 175 x 41 x 23 mm
(7.9 x 1.8 x 1")
WEIGHT 78 g (2.7 oz.)
ACCESSORIES:
HI 7020M ORP 200/275 mV solution
(230 mL bottle)
HI 7091M Reducing solution (230 mL bottle)
HI 7092M Oxidizing solution (230 mL bottle)
HI 70300M Storage solution (230mL)
HI 7061M Electrode cleaning solution
(230mL bottle)
HI 73201 Spare electrode
IS98201R3 05/01
ELECTRODE REPLACEMENT:
The electrode can be easily replaced in the following
way:
• Slide off the battery cover.
• Remove the screw on the back of the
ORPORP
ORPORP
ORP located
below the battery compartment and slide off the
whole internal part of the tester.
• To remove the electrode proceed as follows:
Remove the fastening screw on the front (1) to
loose the electrode. The internal circuit is con-
nected to the electrode through two wires (one
for the glass sensor and one for the reference).
Remove the two small screws (2 & 3) which
fasten the four connecting wires to their sock-
ets.
• Remove the electrode and
replace it with a new
HI73201.
• Connect the new electrode
as follows:
first fasten the screw on the
front (1) to attach the elec-
trode to the circuit. Insert
the two small wires into
their sockets and fasten the
two screws (2 & 3).
Internal circuit and electrode:
• The new electrode is supplied
with four new O-rings (4).
Make sure they are placed
properly (as shown on the
above drawing) before rein-
serting the circuit into the
plastic casing.
• Reinsert the internal circuit
with the new electrode into
the plastic casing.
• Fasten the screw on the
back below the battery com-
partment.
• Reinsert the battery com-
partment cover.
• Recondition the ORP be-
fore using it again.
HI73201
ORP
HI 98201
Pocket-sized Redox Meter