Hanna Instruments HI 92840 User manual

These Instruments are in Compliance with the CE Directives
Instruction Manual
HI 92710 / HI 92740
HI 92810 / HI 92840
Portable Microprocessor
Printing and Logging
Thermometers

DearCustomer,
Thank you for choosing a Hanna Instruments
Product.
Please read this instruction manual carefully
beforeusingtheinstrument.
Thismanualwillprovideyouwithalltheneces-
sary information for the correct use of the
instrument,aswellasamorepreciseideaofits
versatilityinawiderangeofapplications.
These instruments are in compliance with the
directives.
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
Preliminary Examination............................. 1
General Description .................................... 1
LCD Display Functional Description ........... 2
Functional Description HI 92710
and HI 92740 .............................................. 3
Functional Description HI 92810
and HI 92840 .............................................. 4
Specifications ............................................. 5
Initial Preparation........................................ 6
Operational Guide....................................... 8
Printing / Recording with HI 92710
and HI 92740 ............................................ 13
Printing / Logging with HI 92810
and HI 92840 ............................................ 15
Data Transfer to PC.................................. 27
Fault Functions ........................................ 28
Memory Organization ............................... 29
Printer Maintenance.................................. 30
Battery Replacement ................................ 32
Calibration................................................. 34
Temperature Probes.................................. 35
Un-Housed NTC Sensors ......................... 37
Accessories .............................................. 39
Warranty ................................................... 40
CE Declaration of Conformity ................... 41
ISO 9000 Certified
Company since 1992

1
PRELIMINARY EXAMINATION
Remove the instrument from the packing ma-
terial and examine it carefully to make sure
that no damage has occurred during ship-
ping. If there is any damage, notify your
Dealer.
In addition to this instruction manual you will
also find:
•Printing Thermometer
•HI 762BL Temperature Probe (one chan-
nel version only)
•Paper Rolls (5 pcs)
•AA size Batteries (4 pcs)
•Rugged Carrying Case
Note: Save all packing material until you are
sure that the instrument functions cor-
rectly. All defective items must be re-
turned in its original packaging together
with the supplied accessories.
The Hanna Instruments portable thermom-
eters with built-in printers are microproces-
sor-based and enable you to accurately mea-
sure temperature and record data.
The instrument housing is made of rugged
and lightweight material.
Equipped with a large, easy-to-read LCD, the
units feature an extended battery life and a
special design that enables results to be
obtained even in humid, wet or dusty condi-
tions.
Measurements can be performed with lab-
grade precision in the field as well as in the
laboratory without compromising accuracy. A
12VDC adapter can also be used to power
the unit for extended use.
GENERAL DESCRIPTION

2
HI92810 and HI92840 have a capacity of
16,000 individual temperature readings with
recording intervals selected by the user.
Using the HI9200 infrared transmitter, all the
recorded data can be fed to a PC for easy
reproduction, storage or elaboration without
the interference of cables and cords between
the meter and the receiver.
Other features include: on-board clock and
date, user-selectable recording/logging inter-
vals, automatic memorization of measured
values (HI92810 and HI92840 only), use of
pre-calibrated completely interchangeable
probes, printing on plain paper, automatic
shut-off capability, low battery warning and 2
year warranty.
Two versions are available:
HI 92710C, HI 92740C, HI 92810C and
HI 92840C perform temperature readings in
degrees Centigrade;
HI 92710F, HI 92740F, HI 92810F and
HI 92840F perform temperature readings in
degrees Fahrenheit.
LOG INTV LO BAT
TIME
DATE
°C
1
2
LCD DISPLAY FUNCTIONAL DESCRIPTION
1) PrimaryDisplay
2) SecondaryDisplay

3
FUNCTIONAL DESCRIPTION
HI92710 AND HI92740
1) Temperature Probe Connectors
2) Power adapter plug
3) LCDDisplay
4) PAPER key, to pull the paper
5) ON/OFF key, to turn the meter on or off
6) INTV key, to select the printing interval
7) 0.1/1 key, to select the resolution
8) UP key, to set up printing interval and to select
channel # (for HI92740 only)
9) DOWN key, to set up printing interval and to select
channel # (for HI92740 only)
10) PRINT key, to obtain a printout (printing accumula-
tive time and temperature)
11) LOG key, to enter and exit the recording mode
HI 92740C
ON/OFF PAPER
INTV
instrum nts
e
UP
PRINT
DOWN
0.1/1 LOG
3
4
5
6
7
8
9
10
11
MICROPROCESSOR
PRINTING THERMOMETER
RANGE
-50.0 . . . +150.0°C
1
2
°C

4
FUNCTIONAL DESCRIPTION
HI 92810 AND HI 92840
1) Temperature Probe Connectors
2) Power adapter plug
3) LCDDisplay
4) PAPER key, to pull the paper
5) PRINTkey,toobtainaprintout(printingpresenttime
and temperature)
6) ALT key, alternate function key
7) TEMPkey,toreadtemperatureandtoreactivatethe
meter when in stand-by
8) UP key, to set up date, time, printing interval and to
select channel # (for HI92840 only)
9) DOWNkey,tosetupdate,time,printingintervaland
to select channel # (for HI92840 only)
10) TIME key, to display present time and printing
interval
11) LOGkey,toenterandexittheloggingandrecording
mode.
HI 92840C
PRINT
PAPER
ALT
instrum nts
e
UP
TIME
DOWN
TEMP LOG
3
4
5
6
7
8
9
10
11
MICROPROCESSOR
LOGGING THERMOMETER
RANGE
-50.0 . . . +150.0°C
1
2
°C

5
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONSSPECIFICATIONS
SPECIFICATIONS
HI92710C/HI92810C HI92710F/HI92810F
HI92740C/HI92840C HI92740F/HI92840F
Range -50.0 to 150.0°C -55.0 to 300.0°F
Resolution 0.1°C0.1°F
Accuracy From -20 to +120°C: From -4 to +248°F:
(@25°C/77°F) ±0.4°C ±0.8°F
Outside: ±0.7°C Outside: ±1.3°F
for one year, excluding probe error
Typical EMC ±0.6°C ±1.2°F
Deviation
Battery 4x1.5V AA size, life of 500 hours
Type/Life with 60' printing interval
Socket for 12VDC adapter
Auto Shut-off After 5 minutes of non-use
Channels HI92710/HI92810:1;HI92740/HI92840:4
Printer Low-power impact belt type,
14 characters per line using
38 mm plain paper
Printing 1, 2, 5, 10, 15, 30, 60,
Intervals 120 and 180 minutes
Environment 0 to 50 °C (32 to 122°F)
Max. 95% RH
Dimensions 220x82x66mm (8.7x3.2x2.6")
Shipping Instrument: 500g (18 oz.)
Weight Kit: 1.4 kg (3.1 lb.)

6
INITIAL PREPARATIONINITIAL PREPARATION
INITIAL PREPARATIONINITIAL PREPARATION
INITIAL PREPARATION
Each meter is supplied complete with batter-
ies. Remove the back cover, unwrap the bat-
teries and install them while paying attention
to the polarity.
To prepare the instrument for use, connect
the temperature probe to the connector lo-
cated on the top of the instrument.
To switch the HI 92710 and the HI 92740
"ON", press the ON/OFF key.
To switch the HI 92810 and the HI 92840
"ON" press the TEMP key.
Choose the most appropriate temperature
probe(s) for your application (see page 35)
and connect it (them) to the meter.
All the probes have been precalibrated at the
factory and no calibration is needed.
HI 92710 and HI 92810 have a single probe
connector.
HI 92740 and HI 92840 have four probe con-
nectors.
With the meter facing you, channel #1 is the
first connector on the top left hand side.
TEMP
ON/OFF

7
If the temperature probe or a calibration test
plugs is not connected to the channel input,
the meter will display and print "----" to alert
the user.
This also indicates the possibility of a broken
probe cable. The channel is displayed with
"CH" and the number of channel (four chan-
nels versions only).
Note: To ensure accurate readings it is rec-
ommended that the temperature probes
be connected to consecutive channels
beginning with channel #1. For ex-
ample, if only one probe is to be used,
it must be connected to channel #1. If
2, 3 or 4 probes are to be used, they
must be connected to channels 1, 2,
3, and 4 in ascending order.
To maximize battery life, the display is auto-
matically switched off after 5 minutes of non-
use. However, the meter will continue to monitor
temperature (if in the logging mode) .
CH
°C

8
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDEOPERATIONAL GUIDE
OPERATIONAL GUIDE
SETTING THE PRINTING INTERVAL (for
HI92710 and HI92740 only)
Turn the instrument on by
pressing the ON/OFF key.
Press the INTV and the UP or DOWN keys
simultaneously.
The display will show the
log number. At the bottom
of the display the printing
interval will be flashing.
Keep the INTV key pressed and set the print-
ing interval by pressing the UP or DOWN
key. Select between 1, 2, 5, 10, 15, 30, 60,
120 and 180 minutes.
SETTING THE MEASUREMENT RESOLU-
TION (for HI92710 and HI92740 only)
Press the 0.1/1 key to select the 0.1°or 1°
resolution.
With four channels versions, all four channels
readings automatically change by pressing
this key.
To return the reading to the previous resolu-
tion, simply press the 0.1/1 key.
ON/OFF
CH
°C
0.1/1
DOWN
INTV
UP
OR
INTV

9
SETTING DATE / TIME / PRINTING INTER-
VAL (for HI92810 and HI92840 only)
Press the ALT and the TIME keys simulta-
neously. The display will show the date set-
ting. At the bottom of the display the year
will be blinking.
Use the UP or the DOWN arrow keys to
select the year.
When the correct year is selected, press the
TIME key once. The left digit of the display
blinks, showing the month.
Select the month by using the UP or the
DOWN arrow keys.
DATE
UP
TIME
ALT
TEMP
DOWN
UP
TIME
DATE
DOWN
UP

10
Press the TIME key, the right hand side of
the display shows the day.
Use the UP or the DOWN arrow key to
select the correct day.
Press the ALT and the TIME keys simulta-
neously and the display will now show the
clock time with the printing interval blinking.
Any interval can be selected from 1, 2, 5, 10,
15, 30, 60, 120 or 180 minutes by using the
UP and the DOWN arrow keys.
Once the desired interval is selected press
the TIME key once to set it, the left digits of
the display will start blinking.
TIME
DATE
DOWN
UP
INTV
TIME
UP
TIME
ALT
TEMP
DOWN
UP

11
INTV
TIME
To select the hour, press the UP or the
DOWN arrow keys (24 hour clock).
To set the hour press the TIME key once, the
minutes start blinking.
Use the UP or the DOWN keys to select the
minutes.
Press the ALT and the TIME keys to leave
this mode.
The time, date and printing interval are now
set and stored in the memory even when the
display is switched off.
UP DOWN
TIME
UP
DOWN
UP
TIME
ALT
TEMP

12
INTV
TIME
TO VIEW DATE / TIME / TEMPERATURE
(for HI 92810 and HI 92840 only)
To view the time press the TIME key. This
also displays the selected interval time on
the secondary LCD.
To view the date, press the UP key when the
LCD is displaying time.
To view temperature press TEMP key.
Using UP or DOWN keys select which chan-
nel to monitor (four channels versions only).
If "----" is displayed, it indicates that the
temperature probe or calibration test plug are
not connected.
This also indicates the possibility of a broken
probe cable. The channel is displayed with
"CH" and the number of channel (four chan-
nels versions only).
TIME
TEMP
CH
°C
CHANNEL
DOWN
UP
CH
°C
DATE
UP

13
PRINTING / RECORDINGPRINTING / RECORDING
PRINTING / RECORDINGPRINTING / RECORDING
PRINTING / RECORDING
WITH HI 92710 AND HI 92740WITH HI 92710 AND HI 92740
WITH HI 92710 AND HI 92740WITH HI 92710 AND HI 92740
WITH HI 92710 AND HI 92740
To print the measured values
press the PRINT key. The
printout provides the following
information:
a- Running sample number
b- The total accumulative
time
c - Temperature value.
d- Channel number (HI92740 only)
RECORDING MODE (PROGRAMMED
PRINTOUTS)
Press the LOG key to enter
the recording mode. The log
number and page number will
appear for a few seconds on
the display to indicate the
correct operational mode. The
meter will write the first mea-
surement taken in that mo-
ment, and will print at the
interval selected thereafter
until the ON/OFF key is
pressed.
The printout provides the following informa-
tion:
a- A running log number
b- A running sample num-
ber (in that particular log)
c - Printing interval indicator in minutes
d- The accumulated time since printing started
(HH.MM)
e- Temperature value
f - Channel number (HI92740 only).
In HI92740 only, if less then 4 probes are
plugged in during recording mode, the meter
will print only the values of the probes con-
nected.
PRINT
0001 *10.25
#1 20.0 °C.
#2 85.5 °C
#3 ---- °C.
#4 ---- °C.
.
ab
c
d
LOG INTV
ON/OFF
LOG
==07== 0005M
0014 *01.05
#1 25.0 °C
#2 27.3 °C. .
a
b
f
c
d
e

14
If probes are added to the remaining chan-
nels 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 a new log
number is entered.
A blinking "CH" will appear
on the display next to the
channel numbers not being
utilized and/or recorded.
If more than one channel is being monitored,
the printer will automatically print the tem-
perature of all the connected channels.
When the meter is in record-
ing mode "LOG" is displayed
on the bottom left corner of
the LCD with the tempera-
ture value on the primary dis-
play.
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 re-
cording mode, a printout
is produced without affect-
ing the running number.
•Once in recording mode, the printing inter-
val cannot be changed. Exit the recording
mode first (pressing the ON/OFF key) be-
fore setting the new interval.
TO STOP RECORDING
In order to quit the recording
mode, press the ON/OFF
key. This will generate a re-
cording exit status printout.
ON/OFF
CH
°C
LOG
CH
°C
LOG
PRINT

15
PRINTING / LOGGINGPRINTING / LOGGING
PRINTING / LOGGINGPRINTING / LOGGING
PRINTING / LOGGING
WITH HI 92810 AND HI 92840WITH HI 92810 AND HI 92840
WITH HI 92810 AND HI 92840WITH HI 92810 AND HI 92840
WITH HI 92810 AND HI 92840
To print the measured values
shown on the display, press
the PRINT key. This function
can be activated in normal
operation mode as well as
during logging and scanning data on display
(see above). When in measurement mode, the
printout provides the following information:
a - Running sample number
b - Date
c -Time
d - Temperature value(s)
e- Channel numbers (HI92840 only)
LOGGING MODE
This function is suggested when remote mea-
surements have to be taken automatically
without the necessity of an operator and for a
long period of time. In this mode data will be
stored directly into memory.
Set the appropriate logging interval (see Op-
erational Guide section on page 8).
Press the ALT and the LOG keys simulta-
neously to enter the logging mode. The log
number and page number will appear for a
few seconds on the display to indicate the
correct operational mode.
The printer will print a com-
plete set of data and the
"LOG" symbol will appear on
the bottom left corner of the
LCD.
PRINT
10-01-96
0001 *10.24
#1 20.0
#2 45.4
#3 -----
#4 -----
.
.
.
.
ab
c
d
°C
°C
°C
°C
e
UP DOWN
TIME LOG
ALT
TEMP
LOG
Log number
Page number
CH
°C
LOG

16
CH
°C
LOG
To continue logging without printing, press
now the ALT and the PAPER keys at the
same time and the "LOG" symbol on display
will start to blink.
After approximately 5 minutes the display will
switch off but the logging function remains
active.
To reactivate the display
press the TEMP key.
If you wish to re-start printing press the ALT
and PAPER keys simultaneously again.
The printout provides the following informa-
tion:
a- Date (DD-MM-YY)
b- A running log number
c - Printing interval indicator in minutes
d- Time (HH-MM)
e- Temperature value(s)
f - Running sample number (in that particular
log)
Notes:
•Once in the logging mode,
the interval cannot be
changed. Exit the logging
mode first (pressing the
ALT and the LOG keys) before setting the
new interval.
•If the PRINT key is
pressed while in logging
mode, a printout is pro-
duced without affecting the
running sample number.
UP
PAPER
ALT
PRINT
UP DOWN
TIME LOG
ALT
TEMP
PRINT
TEMP
10-01-96
==07== 0005M
0001 *14.25
#1 25.0 °C
#2 27.3 °C. .
b
fc
a
d
e

17
SAMPLE NUMBER
During logging it is possible
to know the running sample
number. Press the LOG key
twice and the display will
show the number of values
that have been taken in the
current log.
LOGGING MODE WITH PRINTING
This function is suggested when an immedi-
ate report of the measurement is required in
addition to the recording of the data into
memory.
Press the ALT and the LOG
key simultaneously to enter
the logging mode. The log
number and page number 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 bot-
tom left corner of the display.
If no key is pressed, the dis-
play goes blank after about 5 minutes. During
printing, the display shows the time, interval
and the “LOG”symbol.
LOG
LOG
UP DOWN
TIME LOG
ALT
TEMP
LOG INTV
TIME

18
CH
°C
LOG
To reactivate the display
press the TEMP key.
The printout provides the following informa-
tion:
a- Date (DD-MM-YY)
b- A running log number
c - A running sample number
(in that particular log)
d- Printing interval indicator in
minutes
e- Time (HH-MM)
f - Temperature value(s)
It is always possible to switch from the log-
ging with printing function to the logging only
function. Press the ALT and the PAPER keys
at the same time and the "LOG" symbol will
start to blink to indicate that the data are now
stored only into memory.
Notes:
•It is recommended to use the adapter
during logging with printing mode, espe-
cially when many printout are going to be
taken.
•Before proceeding with logging with print-
ing, make sure there is enough paper for
your measurements. When the paper is
finished the meter will not advise the op-
erator and the printouts could be lost. If
this happens, data will continue to be
stored into memory, and it is always pos-
sible to print them at different time (see
page 22).
10-01-96
==07== 0005M
0014 *14.25
#1 25.0 °C
#2 27.3 °C. .
b
cd
a
e
f
UP
PAPER
ALT
PRINT
TEMP