Hanna Instruments HI 9271 User manual

Instruction Manual
HI 9171 – HI 9174
HI 9181 – HI 9184
HI 9271 – HI 9274
Portable Microprocessor
Printing and Logging
Thermometers
Foodcare
PRT
PAPER
ALT
TIME
TEMP
LOG
PRINTING
ANDLOGGING
THERMOMETER
Foodcare
56
43
210
http://www.hannainst.com These Instruments are in
Compliance with the CE Directives

2
Dear Customer,
Thank you for choosing a Hanna Product.
Please read this instruction manual carefully before using the instru-
ment. This manual will provide you with the necessary information for
a correct use of the instrument, as well as a precise idea of its
versatility. If you need more technical information, do not hesitate to
e-mail us at [email protected].
These instruments are in compliance with directives
EN 50081-1 and 50082-1.
ISO 9000 Certified
Company since 1992
PRELIMINARY EXAMINATION......................................................... 3
GENERAL DESCRIPTION ................................................................ 3
LCD DISPLAY FUNCTIONAL DESCRIPTION ....................................... 4
FUNCTIONAL DESCRIPTION HI 9171 & HI 9174............................ 5
FUNCTIONAL DESCRIPTION HI 9181 & HI 9184............................6
FUNCTIONAL DESCRIPTION HI 9271C/F & HI 9274C/F .................. 7
SPECIFICATIONS HI 9271 & HI 9274 ........................................... 8
OPERATIONAL GUIDE ................................................................... 9
PRINTING/RECORDING WITH HI 9171 & HI 9174 .......................15
PRINTING/RECORDING WITH HI 9271 & HI 9274 .......................18
PRINTING/LOGGING WITH HI 9181 & HI 9184 ........................... 20
DATA TRANSFER TO PC............................................................... 30
SELF-DIAGNOSTIC FUNCTIONS .................................................... 31
MEMORY ORGANIZATION ............................................................ 31
PRINTER MAINTENANCE ............................................................. 32
BATTERY REPLACEMENT.............................................................. 34
CALIBRATION ............................................................................. 35
TEMPERATURE PROBES .............................................................. 36
UN-HOUSED NTC SENSORS ........................................................ 38
ACCESSORIES ............................................................................40
WARRANTY ................................................................................ 41
CE DECLARATION OF CONFORMITY .............................................. 43
TABLE OF CONTENTS

3
Remove the instrument from the packing material and examine it
carefully to make sure that no damage has occurred during shipping.
If there is any damage, notify your Dealer or the nearest Hanna
Customer Service Center.
Each Printing Thermometer is supplied with:
• Paper Rolls (5 pcs)
• 1.5V x AA size Batteries (4 pcs)
• Rugged Carrying Case
Note: Save all packing material until you are sure that the instru-
ment functions correctly. All defective items must be returned
in its original packaging together with the supplied accesso-
ries.
PRELIMINARY EXAMINATION
These Hanna portable thermometers with built-in printers are micro-
processor-based to accurately measure temperature and record data.
The instrument housing is made of rugged and lightweight material,
specifically designed for the food industry.
Measurements can be performed with lab-grade precision in the field
without compromising accuracy. A 12VDC adapter can also be used to
power the unit for prolonged use.
Common features include: use of precalibrated and completely inter-
changeable probes, user-selectable printing/logging intervals, printing
on plain paper, automatic shut-off capability, low battery warning,
clock and calendar (HI 9171, HI 9174, HI 9181 and HI 9184),
memorization of logged values (HI 9181 and HI 9184), all opera-
tions password protected (HI 9171, HI 9174, HI 9181 and HI 9184)
and 2 year warranty.
HI 9181 and HI 9184 have a memory capacity of 16,000 individual
temperature readings with selectable recording intervals. Using the
HI 9200 infrared transmitter, all the recorded data can be fed to a PC
for reproduction, storage or elaboration without having to connect and
disconnect cables and cords.
GENERAL DESCRIPTION

4
Different versions are divided into:
HI 9171, HI 9174, HI 9181, HI 9184, HI 9271C and HI 9274C
measuring in degrees Celsius, and HI 9271F and HI 9274F for
Fahrenheit measurements.
LCD DISPLAY
FUNCTIONAL DESCRIPTION
LOG INTV LO BAT
TIME
DATE
°C
1
2
1. Primary Display
2. Secondary Display

5
FUNCTIONAL DESCRIPTION
HI 9171 & HI 9174
3
4
5
6
7
8
9
10
11
1
1
22
°C
3
4
5
6
7
8
9
10
11
°C
PRT
PRT
PAPER
PAPER
ALT
ALT
TIME
TIME TEMP TEMP RUN
RUN
PRINTING
THERMOMETER
PRINTING
THERMOMETER
Foodcare
Foodcare
5
56 6
4
43
3
2
21 10
0
HI 9171 HI 9174
1. Temperature Probe Connector(s)
2. Socket for External 12VDC Power Supply
3. Liquid Crystal Display
4. PAPER (to move paper up)
5. PRT (to obtain printout of current date, time and temperature)
6. ALT (alternate function key)
7. TEMP (to read temperature and to reactivate meter when in
standby mode)
8. (to scan data or to set date, time and printing interval, or
to select channel # for HI 9174 only)
9. (to scan data or to set date, time and printing interval, or
to select channel # for HI 9174 only)
10. TIME (to display time and printing interval)
11. RUN (to enter and exit recording mode)

6
1. Temperature Probe Connector(s)
2. Socket for External 12VDC Power Supply
3. Liquid Crystal Display
4. PAPER (to move the paper up)
5. PRT (to obtain printout of current date, time and temperature)
6. ALT (alternate function key)
7. TEMP (to read temperature and to reactivate meter when in
standby mode)
8. (to scan data or to set date, time and printing interval, or
to select channel # for HI 9174 only)
9. (to scan data or to set date, time and printing interval, or
to select channel # for HI 9174 only)
10. TIME (to display time and printing interval)
11. LOG (to enter and exit the logging and printing mode)
FUNCTIONAL DESCRIPTION
HI 9181 & HI 9184
3
4
5
6
7
8
9
10
11
1
1
22
°C
3
4
5
6
7
8
9
10
11
°C
PRT
PRT
PAPER
PAPER
ALT
ALT
TIME
TIME TEMP TEMP LOG
LOG
PRINTING
AND LOGGING
THERMOMETER
PRINTING
AND LOGGING
THERMOMETER
Foodcare
Foodcare
5
56 6
4
43
3
2
21 10
0
HI 9181 HI 9184

7
1. Temperature Probe Connector(s)
2. Socket for External 12VDC Power Supply
3. Liquid Crystal Display
4. PAPER (to move paper up)
5. ON/OFF (to switch meter on/off or to reactivate meter when
in standby mode)
6. INTV (to select printing interval)
7. 0.1/1 (to select resolution)
8. UP (to set printing interval or to select channel # for
HI 9274 only)
9. DOWN (to set printing interval or to select channel # for
HI 9274 only)
10. PRINT (to obtain printout of sample # and temperature)
11. LOG (to enter and exit recording mode)
FUNCTIONAL DESCRIPTION
HI 9271C/F & HI 9274C/F
instrum nts
e
3
4
5
6
7
8
9
10
11
1
1
22
°C
instrum nts
e
3
4
5
6
7
8
9
10
11
°C
ON/OFF
PAPER
INTV UP
PRINT
DOWN
0.1/1 LOG
PRINTING
THERMOMETER
-50°C .....+150.0°C
PRINTING
THERMOMETER
-50°C .....+150.0°C
Foodcare
ON/OFF
PAPER
INTV UP
PRINT
DOWN
0.1/1 LOG
Foodcare
HI 9271C HI 9274C

8
SPECIFICATIONS
HI 9171 – HI 9174 HI 9271F
HI 9271C – HI 9274C HI 9274F
HI 9181 – HI 9184
Range -50.0 to 150.0°C -55.0 to 300.0°F
Resolution 0.1°C / 1°C 0.1°F / 1°F
Accuracy ±0.4°C ±0.8°F
(@ 20°C/68°F) for one year, excluding probe error
Typical EMC Deviation ±0.4°C ±0.8°F
Power Supply 4x1.5V AA size, max. 500 hours with 60' printing
interval. Socket for 12VDC adapter
Auto Shut-off After 5 minutes of non-use
Channels 1 for HI 9171, HI 9271, HI 9181 and
4 for HI 9174, HI 9274, HI 9184
Printer Low-power impact belt type, 14 characters per line
using 38 mm plain paper
Printing/Logging 1, 2, 5, 10, 15, 30, 60, 120 and 180 minutes
Intervals
Environment 0 to 50 °C (32 to 122°F)
Max. 95% RH non-condensing
Dimensions 220 x 82 x 66 mm (8.7 x 3.2 x 2.6")
Shipping Weight 1.4 kg (3.1 lb.)

9
INITIAL PREPARATION
Each meter is supplied complete with batteries. Remove the back
cover, unwrap the batteries and install them while paying attention to
the polarity (see also page 34).
To switch HI 9171, HI 9174, HI 9181 and HI 9184 on, press TEMP.
To switch HI 9271 and HI 9274 on, press ON/OFF.
If the meter does not switch on check the batteries.
PROBE CONNECTION
Choose the most appropriate temperature probe(s) for your applica-
tion (see page 36) and connect it (them) to the probe connector(s)
located on the top of the instrument. All the probes have been
precalibrated at the factory and no calibration is needed.
HI 9171, HI 9181 and HI 9271 take a single probe while HI 9174,
HI 9184 and HI 9274 can take up to four probes.
With the meter facing you, channel #1 is the first connector on the
top left corner.
If neither a temperature probe nor a calibration test plug is connected
to the instrument, the meter will display "°C ----" to alert the user.
This could also indicate that probe cable is damaged. "CH" and the
channel number are displayed together (HI 9174, HI 9184, HI 9274
only).
TEMP
ON/OFF
CH
°C
OPERATIONAL GUIDE

10
Note: To ensure accuracy, it is recommended that the temperature
probes be connected to consecutive channels beginning with
channel #1. For example, if only one probe is to be used,
connect it to channel #1. If 2, 3 or 4 probes are used, connect
them to channels 1, 2, 3, and 4 in ascending order.
AUTO SHUT-OFF
To maximize battery life the display is auto-
matically switched off after 5 minutes of
non-use. However, the meter will continue to
monitor the temperature if in recording/log-
ging mode.
To revive the display, press any key (except ALT with HI 9171,
HI 9174, HI 9271 and HI 9274).
SETTING DATE, TIME, PRINTING OR LOGGING
INTERVAL (FOR HI 9171, HI 9174, HI 9181
& HI 9184 ONLY)
Turn the instrument on by pressing the TEMP
key.
Press ALT and TIME simultaneously. These instruments have a pass-
word security feature. The default password is 0000. When the meter
is used for the first time, it allows time and date to be set until a
password is entered. If a password has been entered (see page 12)
"----" appears on display and one can only proceed after digiting the
password. Otherwise the display will show the date setting with the
year blinking (shown as the last 2 digits of the year i.e. 95 = 1995).
Use or to select the year.
TEMP
TEMP
ALT TIME
+
DATE

11
When the correct year is selected, press TIME to memorize it. The
month will start blinking.
Similarly set month by or . Press TIME and the day will start
blinking.
Use or to select the correct day.
Press the ALT and the TIME keys simultaneously. The display will
switch to the clock mode, and the printing interval will blink.
Any interval can be selected from 1, 2, 5, 10, 15, 30, 60, 120 to 180
minutes by using or .
Memorize the interval by pressing TIME. The hour will start blinking.
TIME
TIME
ALT TIME
+
TIME

12
To select the hour press or (24 hour clock) and press TIME
once more to memorize it. The minutes will start blinking.
Use or to select the minutes.
Press the ALT and TIME keys simultaneously. The instrument will now
ask for the password and display "0000".
To return to normal operation enter the password or press the ALT and
TIME keys again if the password is not to be changed.
The new date, time and printing interval are now stored in the
memory even when the meter is switched off.
SETTING THE PASSWORD (HI 9171, HI 9181, HI 9174
& HI 9184 ONLY)
The password is represented by a 4 digit number each selectable from
0 to 6.
By pressing the ALT and the TIME keys at the end of the time/date
setting procedure, four zeros appear on the LCD.
If you wish to enter a password, press any of the keys corresponding
to a number. These numbers are printed on the bottom right hand
side of the keys as shown below:
TIME
ALT TIME
+
ALT TIME
+
PRT
PAPER
ALT
TIME
TEMP
LOG
56
43
210
56
43
012

13
If no password is necessary, leave the default password as 0000 by
pressing and holding ALT down and then pressing TIME.
Once a password has been entered, it is automatically stored in
memory. By pressing ALT and TIME simultaneously the display will
switch back to normal operation.
Note: If the password is not known or forgotten, remove the batteries
for two minutes and the password is reset to the default 0000.
ENTERING THE PASSWORD
When the display shows "----" it means that the password has to be
entered. Press the keys corresponding to the password, e.g. for "1256"
press the TIME, TEMP, PRT and PAPER keys in that sequence. If the
wrong key is pressed, once all four digits are filled on the LCD, the
meter will again show "----" so that the entire password can be re-
entered.
VIEWING TEMPERATURE, TIME & DATE (FOR HI 9171,
HI 9174, HI 9181 & HI 9184 ONLY):
To view the date press the key.
To view the time and the printing interval press TIME.
To view temperature press TEMP.
ALT TIME
+
DATE
TIME
INTV
TIME
TEMP
CH
°C
C
HANNEL

14
Using the or keys select channel (HI 9174 and HI 9184
only).
If "°C ----" is displayed, it indicates that the temperature probe or
calibration test plug is not connected. This may also indicate the
possibility of a damaged probe cable. The channel # is displayed
together with "CH" (HI 9174 and HI 9184 only).
SETTING THE PRINTING INTERVAL FOR HI 9271 &
HI 9274 ONLY
Turn the meter on by pressing ON/OFF.
Press the INTV and the UP keys and hold down the INTV key. The
display will show the log number while the printing interval will start
blinking.
Any interval can be selected from 1, 2, 5, 10, 15, 30, 60, 120 and
180 minutes by using the UP and DOWN keys.
CH
°C
ON/OFF
INTV
INTV
UP
UP DOWN

15
Release the INTV key to exit this mode.
SETTING THE MEASUREMENT RESOLUTION (HI 9271 &
HI 9274 ONLY)
Press the 0.1/1 key to select 0.1° or 1° resolution.
With HI 9274, all four channel readings automatically change by
pressing this key.
To return the reading to its original resolution, simply press the 0.1/1
key again.
INTV
CH
°C
0.1/1
PRINTING/RECORDING
WITH HI 9171 & HI 9174
To print the measured values shown on the
display, press PRT. This function can be acti-
vated in normal operation mode as well as
during recording mode (see below). When in
measurement mode, the printout provides the
following information:
a – Running sample number
b – Date (DD-MM-YY)
c – Time (HH-MM)
d – Temperature value(s)
e – Channel numbers (HI 9174 only)
RECORDING AT AN INTERVAL
Ensure that the appropriate recording interval has been set (see
Operational Guide on page 9).
PRT

16
Press ALT and RUN simultaneously to enter the recording mode.
The log number and the interval time will
appear for a few seconds on the display to
indicate the correct operational mode.
The meter will print the measurements taken in that moment, and
will print at the selected interval thereafter until ALT and RUN are
pressed again. The password is also requested to stop printing (unless
it remained at default 0000).
Each printout provides the following information:
a – Date (DD-MM-YY)
b – Printing interval in minutes
c – Time (HH-MM)
d – Temperature value(s)
e – A running log number
f – Running sample number (in that particular log)
g – Channel number(s)
HI 9174 will print only the values of the probes connected. If probes
are added to the remaining channels during the recording mode, the
data from the additional probes will not be printed. Data from re-
maining channels can only be added if the recording mode is exited
and re-entered. A blinking "CH" will appear on the display next to the
channel numbers not being utilized and/or recorded.
When the meter is in recording mode "LOG"
is displayed on the bottom left corner of the
LCD together with time and the printing in-
terval.
If no keys are pressed, the meter goes to standby mode to prolong the
battery life while the recording function remains active.
To reactivate the display press TEMP.
Notes:
• Once in the recording mode, the printer cannot be stopped unless
the password is entered (unless the password is 0000).
ALT RUN
+
TEMP

17
• The interval cannot be changed during recording mode. Exit the
recording mode first (press ALT and LOG and enter the password)
before setting the new interval.
• If PRT is pressed while in logging mode,
a printout is produced without affecting
the running sample number.
TO STOP RECORDING
Press ALT and LOG simultaneously. If a password has been entered
the printer will require the operator to enter the correct password
whereupon it will generate a log exit status printout.
Note: If the password is unknown or forgotten, remove the batteries
for two minutes to stop printing and reset the password to
0000. Likewise, the running log number can also be reset.
ALT LOG
+
PRT
ALT LOG
+
LOG

18
PRINTING/RECORDING
WITH HI 9271 & HI 9274
PRINT
LOG
To print the measured values press PRINT.
Each printout provides the following informa-
tion:
a – The total accumulative time
b – Temperature value(s)
c – Channel numbers (HI 9274 only)
d – Running sample number
RECORDING AT AN INTERVAL
Ensure that the appropriate recording interval has been set (see
Operational Guide on page 9).
Press the LOG key to enter the recording mode.
The log number and the interval time will
appear for a few seconds on the display to
indicate the correct operational mode.
The meter will print the measurements taken
in that moment, and will print at the selected
interval thereafter until the ON/OFF key is
pressed again.
The printout provides the following informa-
tion:
a – A running log number
b – A running sample number (in
that particular log)
c – Channel numbers (HI 9274 only)
d – Printing interval indicator in minutes
e – The accumulated time since printing started (HH.MM)
f – Temperature value(s)
HI 9274 will print only the values of the
probes connected. If probes are added to the
remaining channels during the recording
mode, the data from the additional probes
will not be printed. Data from remaining channels can only be added
if the recording mode is exited and re-entered. A blinking "CH" will
ON/OFF
CH
°C
LOG

19
appear on the display next to the channel numbers not being utilized
and/or recorded.
When the meter is in recording mode "LOG"
is displayed on the bottom left corner of the
LCD together with temperature.
If no keys are pressed, the meter goes to standby mode to prolong the
battery life.
Notes:
• If the PRINT key is pressed while still in
recording mode, a printout is produced
without affecting the running number.
• Once in recording mode, the printing in-
terval cannot be changed. Exit the
recording mode first by pressing ON/OFF
and reset the new interval.
TO STOP RECORDING
To quit recording mode, press ON/OFF. This
will generate a recording exit status printout.
CH
°C
LOG
PRINT
ON/OFF
ON/OFF
--07-- 0005M
<>0016 *1.15
Log number
Total sample number
Exit printing interval
& accumulative time

20
PRINTING/LOGGING
WITH HI 9181 & HI 9184
To print the measured values shown on the
display, press PRT. This function can be acti-
vated in normal operation as well as during
logging and scanning data on display (see
page 23). When in measurement mode, the
printout provides the following information:
a – Running sample number
b – Date (DD-MM-YY)
c – Time (HH-MM)
d – Temperature value(s)
e – Channel numbers (HI 9184 only)
LOGGING MODE WITHOUT PRINTING
This function is particularly useful when measurements have to be
taken continuously even in the absence of an operator over a long
period of time. In this mode data will be stored directly into memory.
Set the appropriate logging interval (see page 9).
Press the ALT and LOG keys simultaneously to enter the logging
mode. The current log number and remaining page numbers will
appear for a few seconds on the display to indicate the correct
operational mode. The printer will print a complete set of data and
the "LOG" symbol will appear on the secondary LCD.
To continue logging without printing, press ALT and PAPER at the
same time and the "LOG" symbol on display will start to blink.
HI 9184 will print only the values of the probes connected. If probes
are added to the remaining channels during the recording mode, the
data from the additional probes will not be printed. Data from re-
PRT
ALT LOG
+
ALT PAPER
+
CH
°C
LOG