Hanna Instruments HI 9161, Instruction Manual

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11 10
RELATIVE HUMIDITY MEASUREMENTS
Using the HI 9161 , HI 9261 and HI 91610 thermohygrometers is
simple. However, the recommendations below should always be
followed.
• The sensor end of the humidity probe should be exposed to a
current of air moving at 0.5 m (20") per second or more.
• In the absence of air movement, the response can be accelerated
by moving the probe back and forth.
• The probe sensor must never come into contact with water or any
other liquid. If this should happen, or if condensation causes
drops to form on the surface of the humidity sensor, the instru-
ment must be turned off until moisture has completely evaporated.
In order to accelerate the evaporation process, the humidity sensor
should be exposed to a current of air.
If you experience any problems in taking measurements, please
contact your Dealer or the nearest Hanna Customer Service Center.
TEMPERATURE MEASUREMENTS
The HI 762L/2 temperature probe supplied with the HI 9161 ,
HI 9261 and HI 91610 is a liquid/general purpose probe with 2 m
(6.6') cable.
Simply plug the probe into the socket located on the top of the meter
(refer to Functional Description on pages 5 to 7).
If it is necessary to monitor temperature continuously, keep the probe
attached to the meter at all times.
To view either the RH% or temperature read-
ing on the display, press RANGE. The reading
will appear without decimal digit when shown
on the lower secondary display. The tempera-
ture range on the secondary display is from 0
to 99°F (or °C).
If the temperature exceeds this range "--" will
appear indicating that the small portion of
the display is unable to accommodate the
reading.
OPERATIONAL GUIDE OPERATIONAL GUIDE OPERATIONAL GUIDE OPERATIONAL GUIDE OPERATIONAL GUIDE
RANGE
Each meter is supplied complete with 4 x 1.5V common AA batteries.
Unscrew and remove the back cover, unwrap the batteries and install
them while paying attention to their polarity.
Connect the RH probe to the 7-pin DIN socket on the top of the meter
and fasten the threaded ring tightly. Connect the temperature probe
to the appropriate connector. The temperature probe can be used
independently to take temperature measurements, or it can be used
in conjunction with the RH probe.
If neither the RH nor the temperature probes
are connected, "----" will appear on the LCD.
To switch the HI 9161 and HI 9261 on, press
ON/OFF.
To switch the HI 91610 on, press RANGE.
To maximize battery life, the display is automatically switched off after
5 minutes of non-use. However, the meter will continue to monitor
(when in the recording/logging mode) RH and temperature.
To reactivate the display, press RANGE.
INITIAL PREPARATION INITIAL PREPARATION
INITIAL PREPARATION INITIAL PREPARATION
INITIAL PREPARATION
ON/OFF
RANGE
RANGE