Hanna Instruments HI 9041 - Manual (Page 7)

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FACTORY RECALIBRATION
All Hanna thermometers have been accurately pre-calibrated at the
factory. It is generally recommended to have all thermometers
recalibrated at least once a year. For an accurate recalibration,
contact your nearest Hanna Customer Service Center.
Hanna Accuracy Test Plugs provide a quick and easy way to check
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 right Test Plug to suit your needs:
FOR HI 9041 AND HI 9061
HI 765-18C Calibration key, -18.0°C
HI 765000C Calibration key, 0.0°C
HI 765070C Calibration key, +70.0°C
HI 765-004F Calibration key, –0.4°F
HI 765032F Calibration key, 32.0°F
HI 765158F Calibration key, 158.0°F
Hanna Instruments reserves the right to modify the design, con-
struction and appearance of its products without advance notice.
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 area could cause unacceptable inter-
ferences to radio and TV equipments, requiring the operator to take all necessary
steps to correct interferences.
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 voltages at the mea-
surement surface exceed 24VAC or 60 VDC.
To avoid damages or burns, do not perform any measurement in microwave ovens.
Note: To clean the meters, do not use aggressive detergents. It is
recommended to use water.
All rights are reserved. Reproduction in whole or in part is prohibited without the
written consent of the copyright owner.
using the battery type specified in this instruction manual.
• HI 9041 and HI 9061: remove the battery cover and replace the
batteries (1x9V for HI 9041 or 4x1.5V AA for HI 9061) with new
ones, while paying attention to their polarity. Reattach the battery
cover.
• HI 93501, HI 95502, HI 93503 and HI 935007: the batteries
are accessed by separating the front and the back halves of the
meter. Unscrew the 4 screws on the back of the meter and carefully
replace the three 1.5V AA alkaline batteries located in the battery
compartment, while paying attention to their polarity. Reattach the
back making sure that the gasket is in place and tighten the 4
screws to ensure a watertight seal.