Hanna Instruments HI 9040 - Manual (Page 2)

OPERATIONAL GUIDE
INITIAL PREPARATION
Remove the battery cover on the back of the thermometer.
Unwrap the supplied 9V battery, connect it to the clip and
reattach the cover.
Connect the temperature probe to the connector on the top of
the meter.
To switch ON, press the ON/OFF key on
the front of the meter.
The thermometer will carry out a self diagnostic test routine,
the LCD will show all segments for a few seconds (or as long as
ON/OFF is held), followed by the per-
centage indication of the remaining
battery life.
The thermometer then enters normal measurement mode.
If a temperature probe is plugged in, the meter displays the
measured temperature.
If no probe is plugged in, or if read-
ing is over-range, the display shows
flashing dashes.
If a measurement is slightly over the range of the meter
specifications, the display flashes the closest full-scale value.
To switch the thermometer OFF, press the ON/OFF key.
MEASURING SCALE (°C/°F)
The instrument is factory set to the °C scale, but measurements can
be performed in either the Celsius or Fahrenheit scale.
Press the °C/°F button to select the
desired scale.
HOLD MODE
The HOLD function is activated by press-
ing the HOLD key.
The measured temperature is held on the
display until HOLD is pressed again.
The "H" tag blinks on the display to
indicate the HOLD mode.
Note: Although the display is frozen, internally the meter
continues measuring and updating Hi and Lo values.
HIGH/LOW TEMPERATURES
The maximum and minimum tem-
peratures are continuously monitored
and displayed in the lower portion of
the LCD.
TEMPERATURE PROBES & ACCESSORIES
All Hanna thermometers have been accurately pre-calibrated
at the factory.
It is recommended to have all thermometers recalibrated at
least once a year. For an accurate annual recalibration,
contact your nearest Hanna Service Center.
Hanna Accuracy Test Plugs provide a quick and easy way to
test the meter's accuracy by simply connecting these Test Plugs
to the probe connector of the meter. If the reading differs by
more than ±0.4°C (±0.8°F) from the Test Plug value, the
meter is due for recalibration. Choose the Test Plug closest to
your measurement range to best suit your needs:
HI 765-18C Calibration test key, –18.0°C
HI 765000C Calibration test key, 0.0°C
HI 765070C Calibration test key, 70.0°C
HI 765-004F Calibration test key, –0.4°F
HI 765032F Calibration test key, 32.0°F
HI 765158F Calibration test key, 158.0°F
FACTORY RECALIBRATION
Hanna offers a wide range of probes to meet your needs with
air, liquid, penetration and surface measurements.
All Hanna temperature probes are pre-calibrated at the
factory and ready-to-use. These interchangeable probes make
it possible to switch from one probe to another without
requiring recalibration.
Hanna probes are also available in different handle colors to
avoid cross contamination during testing.
PROBES WITH 1 m (3.3’) CABLE
HI 765A Air probe, white handle
HI 765BL Liquid probe, black handle
HI 765L Liquid probe, white handle
HI 765PBL Penetration probe, blue handle
HI 765PG Penetration probe, green handle
HI 765PR Penetration probe, red handle
HI 765PW Penetration probe, white handle
HI 765PWL Long penetration probe, white handle
HI 765W Wire probe without handle for hard-to-reach
places
PROBES WITH 10 m (33’) CABLE
HI 765A/10 Air probe with white handle
HI 765L/10 Liquid probe, white handle
HI 765PBL/10 Penetration probe, blue handle
HI 765PG/10 Penetration probe, green handle
HI 765PR/10 Penetration probe, red handle
HI 765PW/10 Penetration probe, white handle
HI 765W/10 Wire probe without handle for hard-to-reach
places
OTHER ACCESSORIES
HI 710009 Blue rubber boot
HI 710010 Orange rubber boot
HI 710020 Spare protective case
HI 721316 Rugged carrying case
Recommendations for Users
Before using these products, make sure that they are entirely suitable for the environment in which
they are used.
Operation of these instruments in residential areas could cause unacceptable interference to radio and
TV equipment, requiring the operator to take all necessary steps to correct interference.
Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC
performance.
To avoid electrical shock, do not use these instruments when voltage at the measurement surface
exceeds 24VAC or 60VDC.
To avoid damage or burns, do not perform any measurement in microwave ovens.
Note: When reading goes over-range, the Hi and Lo values
display dashes until cleared.
CLEAR FUNCTION
Upon pressing the CLEAR key, the
current reading is assigned to the
highest and lowest temperature val-
ues. The High/Low values may be
cleared at any time during measure-
ment.
BATTERY REPLACEMENT
The instrument is powered by a 9 V battery and is provided
with the Battery Error Prevention System (BEPS), which turns
the unit off when a low battery signal is detected.
When the remaining battery level is
less than 10%, a warning symbol
blinks on the display to indicate a low
battery condition.
It is recommended to replace the battery as soon as the low
battery condition is detected.
Remove the cover on the meter's back by applying pressure in
the indicated direction. Unplug the rundown battery and
replace it with a new one.
Battery replacement must only take place in a non-hazardous
area using a 9V alkaline battery.