Hanna Instruments HI 90140 User Manual
Hi 140 series, Of thermologgers
w w w . h a n n a i n s t . c o m
HI 140 Series
& HI 90140 Infrared Transmitter
Thank you for choosing a Hanna product. This manual will
provide you with the necessary information for correct opera-
tion. Please read it carefully before using the logger.
If you need additional technical information, do not hesitate
to e-mail us at email@example.com.
These instruments are in compliance with the
Remove the instrument from the packing material and
examine it carefully. If any damage has occurred during
shipment, immediately notify your Dealer or the nearest
Hanna Customer Service Center.
Each thermologger is supplied complete with batteries and
Note: Conserve all packing material until the instrument
has been observed to function correctly because any
defective item must be returned to the Dealer in its
HI 140 series is a family of temperature loggers with
different ranges (see “Specifications” table). The user can
interact with the meter, i.e. acquire logged data or set
logger parameters, through an RS232 communication pro-
tocol and a PC.
The HI 92140 Windows
compatible software supports the
communication between the instrument and the PC through
the HI 90140 infrared transmitter. For further details, see
the program on-line help.
The HI 140 main features are: selectable logging enable/
disable; programmable high and low alarm thresholds;
programmable logging interval; logging start delay; pro-
grammable user ID; green and red LED indicators; RS232
optical communication link; non-volatile data storage in
EEPROM of logging parameters and logged data; program-
mable real time clock; BEPS (Battery Error Prevention
System). The loggers can memorize up to 7600 samples.
The expected battery life is about 4 years at 25°C operating
All thermologgers are factory calibrated.
The case of the loggers is waterproof IP67. A plastic window
on the top case enables optical data transmission to the
HI 90140 infrared transmitter and status indication for the
user. The two external LEDs are used for communicating
with the transmitter, while the logger status is indicated by
the 2 central LEDs (green and red) as follows:
1. GREEN LED ALWAYS ON: this condition
occurs when the meter has been reset, i.e.
when batteries are changed, requiring a
new setting of the logger parameters.
2. GREEN LED FLASHES ONCE EVERY 4”: the
meter is logging.
3. GREEN LED FLASHES TWICE EVERY 4”: the
meter is waiting for a delayed logging
4. RED LED FLASHES: an alarm condition has
occurred (at least once).