Hanna Instruments hi 98201 User Manual
OPERATION:
• Remove the protective cap.
• Turn the meter on with the ON/OFF
switch located on the top of the
meter.
meter.
• Immerse it in the solution to be
tested without exceeding the maxi-
mum immersion level.
mum immersion level.
• Stir gently and wait for the reading
to stabilize.
• After use, rinse the electrode with tap
water to minimize contamination.
• Always replace the protective cap after use.
MAINTENANCE:
• Check the meter by immers-
ing it in
HI7020 ORP solu-
tion. The reading should
be between 200 and 275
mV at 20ºC (68ºF).
Otherwise clean the plati-
num tip of the electrode by
rubbing it with a soft cot-
ton or lint-free cloth soaked
with
be between 200 and 275
mV at 20ºC (68ºF).
Otherwise clean the plati-
num tip of the electrode by
rubbing it with a soft cot-
ton or lint-free cloth soaked
with
HI7061 cleaning solu-
tion.
• For more accurate readings, condition the meter
by immersing it in a pretreatment reducing
(
HI7091) or oxidizing (HI7092) solution for half
an our before taking measurements.
• In case of erroneous readings even after an
accurate conditioning and calibration, the refer-
ence junction might be contaminated or clogged.
ence junction might be contaminated or clogged.
• Pull out 2 mm (1/8'') of the cloth junction to
renew the electrode reference (it is recommended
to cut the cloth leaving always at least 2 mm -
1/8'' over the reference compartment) and re-
peat the maintenance and conditioning proce-
to cut the cloth leaving always at least 2 mm -
1/8'' over the reference compartment) and re-
peat the maintenance and conditioning proce-
dure.
The cloth junction can be
pulled out approximately
20 times. After that, the
electrode can be replaced
(see the Electrode Replace-
ment section).
The cloth junction can be
pulled out approximately
20 times. After that, the
electrode can be replaced
(see the Electrode Replace-
ment section).
BEPS & BATTERY REPLACEMENT:
The meter is supplied with BEPS (Battery Error
Preventing System) which avoid any erroneous read-
ing due to low battery level. When the batteries are
too low, the meter automatically switches itself off.
To replace the batteries, slide off the battery com-
partment cover and replace all four 1.5V batteries
while paying attention to their polarity.
Preventing System) which avoid any erroneous read-
ing due to low battery level. When the batteries are
too low, the meter automatically switches itself off.
To replace the batteries, slide off the battery com-
partment cover and replace all four 1.5V batteries
while paying attention to their polarity.
Batteries should only be replaced in a nonhazardous
area using the battery type specified in this instruction
manual.
area using the battery type specified in this instruction
manual.
ONE YEAR WARRANTY & SERVICEABLE:
ONE YEAR WARRANTY & SERVICEABLE:
ONE YEAR WARRANTY & SERVICEABLE:
ONE YEAR WARRANTY & SERVICEABLE:
ONE YEAR WARRANTY & SERVICEABLE:
Covered by one year
one year
one year
one year
one year warranty against defects in work-
manship and materials, this tester is now completely
serviceable. Contact your dealer for further information.
serviceable. Contact your dealer for further information.
The ORP
ORP
ORP
ORP
ORP is in compliance with the CE directives.
ORP
HI 98201
Pocket-sized Redox Meter
Manufacturers since 1978