Digi-Sense 93210-50 User Manual

Cole-Parmer Instrument Co.

625 East Bunker Court

Vernon Hills, Illinois U.S.A. 60061-1844

[phone]

[phone] (Fax)

800-323-4340

www.coleparmer.com

e-mail: [e-mail]

A-1299-0879

Edition 01

ThermoLogR

THERMISTOR THERMOMETER

MODEL NO . 93210-50

CERTIFICA TE OF

CONFORMANCE

This thermometer was calibrated using
equipment traceable to the National Insti­tute of Standards and Technology (NIST).

This instrument conforms to
ITS-90.

The accuracy of the thermometer at the
time of calibration was within specifications
stated in the operating manual.

Model No.:__________________________
Serial Number:______________________
Date placed in service:________________
To purchase a NIST certificate of traceabil-

ity with test data and test date for meter and
probe, please contact your dealer or:

Cole-Parmer Instrument Company

625 East Bunker Court

Vernon Hills, Illinois USA 60061-1844

Toll-free: 800-323-4340

1

INTRODUCTION

This versatile hand-held instrument provides highly
accurate temperature measurements in Celsius or
F ahrenheit using a wide selection of 400, 500 and
700 series thermistor probes.

This instrument covers these measuring ranges:
400 Series: –40.00°F to +302.0°F (–40.00°C to

+150.0°C)

500 Series: –40.00°F to +302.0°F (–40.00°C to

+150.0°C)

700 Series: –40.00°F to +212.0°F (–40.00°C to

+100.0°C)

The instrument is designed for easy oper ation and
includes the follo wing features:

• Operator selection of temperature scale

• Resolution of 0.01° from –40.00°C to +99.99°C
or –40.00°F to +99.99°F

• LCD with three four-digit displa ys

• 1/4 in diameter input

• Hold feature f or temporarily retaining a reading

2

• Field calibration capability

• Low battery warning

• Stores or logs up to 1000 readings with real-time
markers

• Scrolls through all stored readings

• Displays MIN and MAX readings

• Interfaces with optional HEWLETT PACKARD

®

infrared printer or optional RS-232-C adapter

• Prints temperature and time of reading

• Built-in tilt stand for easy hands-free operation

3

SAFETY PRECAUTIONS

THIS INSTRUMENT IS

DESIGNED TO ACCEPT
LOW LEVEL SIGNALS SUPPLIED BY STANDARD
THERMISTORS . UNDER NO CIRCUMST ANCES
SHOULD THE INPUT VOLTAGE EXCEED THE
SPECIFIED 10 V RMS .

DO NOT USE OR STORE

THIS INSTRUMENT IN
MICROWAVE OVENS OR ANY ABNORMALLY
HOT OR COLD AREAS .

WEAK BA TTERIES SHOULD

NOT BE LEFT IN THE
INSTRUMENT. DEAD BATTERIES CAN LEAK
AND CA USE D AMAGE T O UNIT.

VOLTAGES PRESENT AT

THE THERMISTOR MAY
ALSO BE PRESENT AT THE BATTERY
TERMINALS. ALWAYS DISCONNECT THE
THERMISTOR WHEN CHANGING BATTERIES.

W ARNING

D ANGER

CAUTION

CAUTION

4

SPECIFICATIONS

THERMISTOR PR OBES
T ype T emperature Range

400 Series: –40.00°F to +302.0°F

(–40.00°C to +150.0°C)

500 Series: –40.00°F to +302.0°F

(–40.00°C to +150.0°C)

700 Series: –40.00°F to +212.0°F

(–40.00°C to +100.0°C)

Accuracy: ±0.06°F (±0.03°C) exclusive of probe
Linearization: Conforms to ITS-90.
Input Protection: 10V rms
Display Update: 0.6 seconds per update
Input: One probe with 1/4 inch phone jack

connector.

Battery

Size: Two AA, 1.5V alkaline ANSI-L40,

IEC-LR6

Life: >500 hours continuous, typical

Display: LCD with 0.4 in high characters main

readout and 0.2 in high characters secondary
displays, 4 digits each display plus various
annunciators.

Operating:

Stated Accuracy: 0°C to 40°C

(32°F to 104°F)

Useful Range: 0°C to 40°C

(32°F to 104°F)

Storage: –40°C to 65°C

(–40°F to 149°F)

Humidity: 10% to 90%

(non-condensing)

5

Dimensions

3 cm D x 8.4 cm W x 15.8 cm H
(1.2 in x 3.3 in x 6.2 in)

Weight with batteries: 227 grams (8 ounces)
Ingress protection: Meets IEC-529 IP-54 for dust

and water resistant enclosures.

Electromagnetic Compatibility (IEC-801-3)

Unit exceeds radiated susceptibility
requirements of ENV -50140.

6

BATTERY INSTALLATION AND

REPLACEMENT

WEAK BA TTERIES SHOULD

NOT BE LEFT IN THE
INSTRUMENT. DEAD BATTERIES CAN LEAK
AND CA USE D AMAGE T O UNIT.

VOLTAGES PRESENT AT

THE THERMISTOR INPUT
MAY ALSO BE PRESENT AT THE BATTERY
TERMINALS. ALWAYS DISCONNECT THE
THERMISTOR WHEN CHANGING BATTERIES.

CAUTION

D ANGER

7

If battery indicator turns on, battery life is
approximately 8 to 10 hours. The battery indicator
will start blinking with less than 1 hour of life
remaining.

AT THIS POINT , BATTERY MUST BE CHANGED .
IF BA TTER Y VOL T AGE GOES TOO LOW , DISPLA Y
WILL GO BLANK.

See SPECIFICATIONS f or battery type.

1. Before changing battery , turn instrument off and
disconnect probe.

2. Loosen screw and lift battery cover off back of
case.

3. Remov e the two AA batteries.

4. Insert two new batteries, observing polarity .

5. Install cov er and tighten screw .

AC ADAPTER

An optional AC adapter can be used f or po w er to
conserve batteries. The adapter is not a charger
and will not charge batteries. The adapter connects
to the bottom of the thermometer. When the adapter
is connected, the batteries are disconnected. Refer
to the ACCESSORIES section for adapter
information.

8

CONNECTING A THERMISTOR

Use either a 400 series or 700 series ther mistor
with your instrument. Be sure your instrument
setting matches the thermistor, using an incorrect
thermistor type will result in erroneous readings.
(Series 500 thermistor probes may be used along
with the supplied correction chart to convert meter
readings to actual temperature.)

T o change between 400 and 700 series thermistors,
see Selecting Thermistor Series on page 14.

Insert the 1/4 in plug into the mating connector on
the top of the instrument.

9

10

11

12

QUICK SETUP

Note: Revie w warnings on page 3.

1. Install batteries.

2. Connect thermistor probe.

3. Press the ON/OFF key. The thermometer performs
a self-test and all display digits and indicators,
as shown below, should remain on for
approximately one second.

The clock will remain on f or about three seconds.

4 . Use SETUP to select the correct thermistor

ser ie s and v arious other options. Use s or t
to make selections, to enter selections and
go to next step .

13

If a probe has not yet been connected to the
input on the instrument, you will see this display:

This message also appears if a probe is broken.
No measurements can be made while this warning
is display ed.

14

COMPLETE SETUP PROCEDURE

The setup function scrolls through a series of steps
for selecting thermistor series, resolution, filter rate,
setting the real-time clock, selecting the line
frequency and accessing the Log sub-menu and
the Print sub-menu. Either the complete setup can
be run as described below, or the setup can be
initiated and terminated at any step. The Log sub­menu and the Print sub-menu can be accessed
without going through the complete setup. These
variations are cov ered in the following procedures.

NOTE

Settings selected in the Setup procedure are stored
in memory and will remain even after power is
turned off or while batteries are being replaced.

Press the SETUP key. The lower left display will
show either the time of day or “OFF” and it will be
flashing.

SELECTING LO WER DISPLA Y MODE

Press the MAX s key or MIN t k ey to toggle the
lower display betw een showing the time of day and
showing minimum and maximum temperature

values. Press the HOLD key to adv ance to the
next step in the setup sequence.

SELECTING THERMISTOR SERIES

Press the MAX s key or MIN t key to select either
400 or 700 series ther mistors. When the correct
thermistor series is flashing, press the HOLD

key to advance to the next step in the setup

sequence.

TEMPERA TURE RESOLUTION

There are three choices for temperature resolution.
The first choice is with 0.01° resolution is selected:
the thermometer will automatically range to show
the greatest possible resolution. The next choice is

15

0.1° resolution: the thermometer will automatically
range between 0.1° and 1° as required. The final
choice is 1° resolution: the display will remain in
this resolution for all displa yed temperatures.

When 0.01° or 0.1° resolution is selected, a decimal
point will appear in the upper numerical display . When
1° resolution is selected, no decimal point will be
present.

The upper display will show 0.01, 0.1 or 1 and it
will be flashing. Press either MAX s k ey or MIN t
key to change resolution, then press the HOLD

to advance to the next step in the setup

sequence.

FIL TER RA TE

The filter rate can be set to OFF, Lo or Hi. This r ate
is changed to smooth out fluctuations in the
readings. Normally this would be set to OFF. If
readings are unstable, try changing to Lo or Hi.

The lower left display will read “FILt” and the upper
display will flash either OFF, Lo or Hi. Use the MAX
s key or MIN t ke ys to switch the dampening rate,
the press HOLD key to store the rate and
continue setup by setting the real-time clock.

SETTING REAL-TIME CLOCK

1. When setting the real-time clock, the right two
digits in the lower left display will be flashing.
Use the MAX s k ey or MIN t k ey to adjust the
flashing digits to the desired minute setting.

2. Press HOLD key to lock in the minutes and
advance to the hours setting.

Hours are set in the 24 hour time system. Theref ore,
time after 12:59 pm requires 12 to be added to the
time. For e xample, 3:00 PM is (3+12) = 15:00 hours.

16

3. The left two digits in the lower left display will
be flashing. Use the MAX s key or MIN t key
to adjust the flashing digits to the desired hour
setting.

4. Press the HOLD ke y to store the hours and
advance to the month setting.

5. The MO annunciator will be on and the left two
digits in the lower right display will be flashing.
Use the MAX s key or MIN t key to adjust
the flashing digits to the desired month setting
(1 to 12).

6. Press the HOLD key to store the months
and advance to the da y setting.

7. The DAY annunciator will be on and the right
two digits in the lower right display will be
flashing. Use the MAX s key or MIN t key to
adjust the flashing digits to the desired day
setting (1 to 31).

8. Press the HOLD key to store the day and
advance to the year setting.

9. The YR annunciator will be on and the four digits
in the lower left displa y will be flashing. Use the
MAX s key or MIN t ke y to adjust the flashing
digits to the desired year setting (2000 to 2063).

10 . Press the HOLD key to loc k in the year . To

set up the log or print functions proceed to the
follo wing paragraphs.

LINE FREQUENCY SELECTION

For maximum noise rejection, it is possib le to select
one of two line frequency settings. This selection
should be based on the local mains power line
frequency of either 50 Hz or 60 Hz. For example , all
of North America is 60 Hz, while Europe is 50 Hz.

17

The lower left display will show “LINE” while the
upper display is flashing either 50 or 60. Use the
MAX s key or MIN t key to adjust the flashing
digits to the desired line frequency setting.

Press the HOLD key to lock in the line
frequency . This completes the basic oper ation setup
and returns to normal operation.

LOG SETUP

The Log sub-menu is used to set the time intervals
between the logged readings. The time can be set
from 1 second to 60 minutes. Once the log
sub-menu is setup , logging can be toggled ON or
OFF by pressing the LOG key. When logging is
turned ON, it will continue until turned OFF or 1000
logs have occurred at the entered rate. The first
1000 logs are retained.

1. Anytime while in SETUP, press the LOG key.
The LOG annunciator will be on and the
presently set time interval (default is one second)
will be displayed in the lower left
display. The two right digits represent seconds
and will be blinking.

2. Use the MAX s key or MIN t keys to adjust
the “seconds” as desired. Press the HOLD

key to store setting and adv ance to “minutes”

setting.

3. Use the MAX s key or MIN t keys to adjust the
“minutes” as desired. Press the HOLD key to
store setting. This completes the Logging setup .

18

PRINT SETUP

The Print sub-menu is used to set the time intervals
between the readings being sent to the printer. The
default rate is once e v ery three seconds. The time
can be set from 3 seconds to 60 minutes. On ce the
print sub-menu is setup, printing can be toggled ON or
OFF by pressing the PRINT ke y . In addition, the data
rate for the infrared RS-232-C output can also be set.

1. Anytime the PRINT key is pressed while in
SETUP, the PRINT annunciator will be on and
the presently set time interval (default is three
seconds) will be displayed in the lower left
display. The two right digits represent seconds
and will be blinking.

2. Use the MAX s key and/or MIN t keys to adjust
the “seconds” as desired. Press the HOLD

key to store setting and advance to the

“minutes” setting.

3. Use the MAX s key and/or MIN t keys to adjust
the “minutes” as desired. Press the HOLD

key to store setting and proceed to the data

output rate.

4. Use the MAX s key and/or MIN t keys to scroll
through the available data output rates of HP,
300, 600, 1200 or 2400 (use HP for the
HEWLETT-PACKARD infrared printer). Press
the HOLD key to store setting and end the
setup. The data output rates of 300, 600, 1200
and 2400 are for use with the optional infrared to
RS-232-C adapter.

SELECTING INDIVIDU AL PARAMETERS

The RTD sensitivity, resolution, filter update rate,
real-time clock and line frequency can be set
individually without performing the complete setup .
First press the SETUP key, then repeatedly press
the HOLD key until the desired function is
display ed. Use the s t keys to change the function
and press the HOLD key to store setting.

19

OPERATING PROCEDURES

The unit will always power up with the upper
display showing temperature. If a probe is not
connected at power up , the upper display indicates
OPEN.

For optimum oper ation, allow about one minute for
ambient temperature stabilization. If the unit has
been stored at an extreme ambient condition, more
time may be needed.

BASIC TEMPERATURE MEASUREMENTS

Check that the thermometer is turned on, the probe
connected, the desired resolution 0.01° or 0.1° or
1° is selected, and the desired scale °F or °C is
selected.

SELECTING THE TEMPERATURE SCALE

Use the °C/°F key for selection of the Fahrenheit
or Celsius scale. The last selection is retained in
memory even if power is s witched off .

MAXIMUM READINGS

The maximum reading function displays the
maximum reading since power up or since the last
time the clear function was used. The maximum
reading function is ideal for monitoring unattended
operations while continually displaying every
temperature change that occurs. The maximum and
minimum values are sensed and automatically
stored until you are ready to observe the reading.

Do not turn the instrument OFF when a maximum
or minimum temperature value may be needed;
MAX/MIN memory contents will be lost.

20

Clearing a Maximum Reading

Press the CLEAR key then press the MAX s key .
The maximum memory will be cleared.

MINIMUM READINGS

The minimum reading function displays the
minimum reading since power up or since the last
time the clear function was used. While continually
displaying e very temperature change that occurs,
the maximum and minimum values are sensed and
automatically stored until you are ready to observe
the reading.

Do not turn the instrument OFF when a maximum
or minimum temperature value may be needed;
MAX/MIN memory contents will be lost.

Clearing a Minimum Reading

Press the CLEAR key then the MIN t key. The
minimum memory will be cleared.

HOLD FUNCTION

Press the HOLD key to retain the reading on
the display. Press HOLD key again for normal
operation.

Maximum Hold
Press the MAX s key, then press the

HOLD key. To turn off the HOLD function and

return to normal operation, press the HOLD key
again.

T o clear the maximum readings , press the CLEAR
key, then the MAX s key.

21

Minimum Hold

Press the MIN t key, then press the HOLD
key. To tur n off the HOLD function and return to
normal operation press the HOLD key again.

T o clear the minim um readings, press the CLEAR
key, then the MIN t key.

STORED READINGS

The store function allows you to store up to 1000
readings. Each reading is logged with a storage
location number and the time of occurrence. To
store readings, proceed as follo ws:

1. Momentarily press the STORE k ey . The present
temperature is stored. The upper main display
will momentarily show the storage location
number and the ST ORE annunciator will be on.

After three seconds, the storage number will be
replaced with a temperature reading but the ST ORE
annunciator remains on to indicate a temperature
reading has been stored. The ST ORE key ma y be
pressed as fast as once per second.

2. Repeat step 1 for all the points to be recorded, up
to a maximum of 1000. Each time the STORE
key is pressed, the new reading will be stored
and the upper main display will show the stor age
location number f or about 3 seconds. After 1000
stored readings, the ne xt time the STORE key is
pressed the main display will indicate FULL.

22

RECALL READINGS

This function allows the stored readings, the
reading sequence number and the Time/Date
of the readings to be recalled. RECALL shows
each stored reading individually . When individual
readings are recalled, you can toggle between
the reading and the sequence number of the
reading. To recall readings, proceed as follows:

1. Momentarily press the RECALL key, the time
and date will be display ed on the lower displays
and the stored sequence number will be
display ed on the upper main display . The ST ORE
and RECALL annunciators will be on.

2. To step through the readings, press the MAX s
key or the MIN t key. Each press of the k ey will
advance to the ne xt reading in sequence. Hold
the MAX s key or MIN t key do wn to advance
continuously through the readings at an
increasing rate. To increment or decrement by
100, proceed as follo ws:

To increment, hold down the MAX s key then
press the MIN t ke y.

To decrement, hold down the MIN t key then
press the MAX s key.

3. To toggle betw een the readings and the reading
sequence number , press the RECALL key again.

4. To return to normal operation, press any other
key e xcept ON/OFF , MAX s, MIN t or RECALL.

CLEARING STORED OR LOGGED READINGS
Press the CLEAR key, then the STORE key or

LOG key. Regardless of which key is pressed,
STORE or LOG, the stored and logged readings

in memory will be cleared.

23

LOGGING READINGS

The Logging function is controlled by the LOG key .
Prior to logging readings, it is necessary to set up
the time interval between readings (see LOG
SETUP) in the COMPLETE SETUP PROCEDURE
section. The time betw een readings can be set to
any value from 1 second to 60 minutes. Logging is
initiated by pressing the LOG key. Logging will
continue at the programmed rate until either the
LOG key is pressed again or 1000 logs have
occurred. The display will then show “FULL”.

The STORE function can be used during logging
to insert additional measurements by pressing the

STORE key.

PRINTING

Printing can output real-time readings or stored
readings. The output is sent to the infrared (IR)
printer output located at the top of the thermometer.
The printer output default time period is once ev ery
3 seconds. This time can be set to any value
between 3 seconds and 60 minutes (see PRINT
SETUP) in the COMPLETE SETUP PROCEDURE
section. The following sample printouts show the
RS-232-C format and the HEWLETT-PACKARD
infrared printer in normal and log dump print modes.
Note that in log dump print mode the first line
specifies the total number of readings.

The print function is controlled by the PRINT key .

24

HP Printer Format for Normal Printing

New heading will appear when date changes or
new print is started.

---- = over r ange

06-01-00 °F
13:20:54 30.56
13:20:57 32.22
13:21:00 32.44
13:21:03 164.2
13:21:06 -103.1
13:21:09 -58.87
13:21:12 -58.92
13:21:15 510.4
13:21:18 1034
13:21:21 ---­13:21:24 1034
06/01/00 °C
13:21:27 556.3
13:21:30 556.8
13:21:33 0.01
13:21:36 0.04
06/01/00 °F
13:21:39 32.05

25

HP Printer Format for Log Dump

New heading will appear when date changes.

---- = over r ange

TOTAL READINGS:1000
02-02-00 °F
19:01:00 ---­19:01:02 -321.6
19:01:00 -279.5
19:01:07 -236.7
19:02:19 -192.9
19:01:01 -149.0
19:01:01 -104.2
19:01:03 -58.95
19:01:00 -13.51

TOTAL READINGS:1000
02-02-00 °C
19:01:00 ---­19:01:02 -196.4
19:01:00 -173.0
19:01:07 -149.3
19:02:19 -124.9
19:01:01 -100.5
19:01:01 -75.69
19:01:03 -50.53
19:01:00 -25.29
19:01:01 -0.06
19:01:00 25.52

Note that printing 1000 stored sets of readings could
take nearly one hour as limited by the printer .

26

RS-232-C Format for Normal Printing and Log
Dump

---- = over range

“DATE”, “TIME”, “DEGREES F”
07-13-00,16:30:20, 72.56
,16:30:30, 72.55
,16:30:40, “OPEN”
,16:30:50,"----"

The print function is controlled by the PRINT key .
Proceed as follows:

1. P erf orm the PRINT Setup procedure to set the
desired print rate.

2. Check that the IR printer input is properly aligned
with the infrared output at the top of the
thermometer.

27

Printer output will occur in real-time when the
thermometer is operating in the normal mode. When
the thermometer is in the RECALL mode, printing
of the stored information will occur .

3. Press the PRINT key to star t pr inting. Printing
will continue at the programmed print rate until
the PRINT k ey is pressed again, or if stored data
is being printed and all data has been transferred
to the printer. When printing stored data, the
temperature and times of occurrence will be
output.

CALIBRATION

The calibration function allows both single point and
dual point calibration of the thermometer. Single
point calibrates the offset only . Dual point calibrates
the offset first then calibrates the slope. The
thermometer can be calibrated at any temperature.

It is not necessary to perform a field calibration to
obtain specified accuracies. Use the field calibration
feature to impro ve thermometer/probe accuracy or
to compensate for probe calibr ation drift.

The thermometer has a memory retention capability
to hold calibration values e ven while power is off or
the battery is removed.

When you restart, there is no need to recalibrate.

NOTE

The temperature at which water boils (100°C/
212°F) is at sea level and standard atmospheric
pressure using distilled water . Changes in altitude
and barometric pressure will cause the boiling
temperature to change.

As a rule of thumb, the boiling temperature of
water will decrease 1°C (1.8°F) for every 1000
feet abo ve sea lev el. For e xample, at an elev ation
of 5300 feet (1600 meters), water will boil at
approximately 94.7°C (202.5°F).

28

Other liquids may also be used as calibration
standards. Consult a chemical handbook for their
freezing (melting) point and boiling point properties.

When calibrating at freezing (0°C or 32°F), it is
recommended to use crushed ice made of distilled
water in a dewar flask. Add crushed ice to top of
flask. Top off flask with distilled water. Continue to
add crushed ice to maintain tightly packed crushed
ice/water in flask.

CALIBRA TION PROCEDURES

Calibration Procedure

This calibration function provides for both an offset
and slope field calibration. For proper calibr ation,
the following conditions m ust be observed:

• The slope point must be a higher temperature than
the offset point.

• The difference must be at least 20°C (68°F).

•Use two points based on the expected high and
low temperatures. Temperatures measured
outside of these limits may no longer meet
specifications.

• Resolution is based on the selected display
resolution.

Proceed as follows to calibrate the probe .

1. Place the probe at the lower known reference

temperature.

2. Offset Calibration: Momentarily press the CAL

key to enter the calibration mode, the CAL
annunciator will flash. The temperature is
displayed on the main display and Lo is
display ed on the lower left display. “Lo” signifies
that this is the offset point.

29

3. Allow the reading to stabilize. If the displayed
temperature is higher or lower than the ref erence
temperature, use the MAX s key to increase
the displayed reading or the MIN t key to
decrease the displayed reading until the ref erence
temperature is display ed. The MIN t or MAX
s must be pressed at least once. The CAL
annunciator should be blinking during this
procedure.

4. Press the HOLD key to lock the offset
calibration in and advance to the slope
calibration. T o return to normal operation, press
any ke y e xcept CAL or HOLD .

5. Slope Calibration: Place the probe at the higher
reference temperature.

6. Allow the reading to stabilize. If the displayed
temperature is higher or lower than the ref erence
temperature, use the MAX s key to increase
the displayed reading or the MIN t key to
decrease the displayed reading until the
reference temperature is displa yed. The MIN t

or MAX s key must be pressed at least once.

The CAL annunciator should be blinking during
this procedure.

7. Press the HOLD key to loc k the calibration in.

Clearing Cal Point: Press CLEAR, then CAL. Unit
rev erts to factory calibration with no offset or slope
compensation.

FIELD CALIBRA TION LOCKOUT AND
RE-ENABLE

The calibration lockout feature prevents any field
calibration changes. The lock out remains in effect
until a lockout re-enab le has been performed. Use
the following procedures to loc kout or re-enable the
field calibration operation.

30

Lockout Pr ocedure

1. Turn the thermometer off.

2. Simultaneously press and hold the CAL and the

CLEAR keys down and momentarily press the
ON/OFF key. Continue to hold the CAL and
CLEAR keys f or at least 5 seconds.

Re-Enable Pr ocedure

1. Turn the thermometer off.

2. Simultaneously press and hold the HOLD
and the CAL keys down and momentarily

press the ON/OFF key. Continue to hold the

HOLD and CAL k eys until the display blanks .

MAINTENANCE AND

TROUBLESHOOTING

Properly used, the thermometer should maintain
calibration indefinitely and not require service other
than occasional cleaning of the housing and
changing of the batteries.

Do not clean with abrasives or solv ents. Use mild
detergents, nev er immerse nor use excessive fluid.

BA TTERIES

If there is no display when the thermometer is
turned on, check condition of the two AA batteries.
Also check that the battery terminals are clean and
batteries are properly installed. If replacement is
necessary , refer to the BATTERY INSTALLA TION
AND REPLACEMENT section for replacement
procedure.

The real-time clock will keep time f or up to 1 minute
with the batteries removed. To minimize the need
for resetting the cloc k, either remove and replace
one battery at a time, or connect the AC adapter

31

while changing the batteries. All stored/logged
readings are retained until cleared, even if the
batteries are removed f or long periods.

SER VICE

There are no internal adjustments or user
replaceable parts.

If “Err” followed by the numbers 1 through 9 is
displayed (see example below), return unit for
service. Note that “Err” alone may be displayed
during improper field calibration.

Note: Serial number label is located inside battery
compartment.

32

A-1925-41

Rev. A

Printed in U.S.A.

010600

TROUBLESHOOTING

The following chart lists the most probable faults .
There are no internal adjustments or user
replaceable parts. If this does not solve the problem,
refer service to your dealer .

F A ULT ACTION

No display when Check condition of
turned on batteries.

Check that batteries are
inserted properly .
Check operation using A C
adapter.

Display shows Out of range indication.

- - - ­Display shows Open probe connection.

OPEn
Display sho ws If displayed at any time

Err other than during field

calibration, return
instrument for service.

If “Err 1” through “Err 9” remains on the display,
return instrument for service.

ACCESSORY THERMISTOR PROBES

COLE-PARMER offers a wide variety of 400, 500
and 700 series thermistor probes, connectors, ex­tension cables, switch boxes, accessories, and cali­bration services.

The general-purpose and penetration probes listed
below have a nylon handle, a 5-ft. coiled cord, a
316 SS sheath and a 1/4 in phone plug. The sur­face and air/gas probes feature a vinyl-covered
10-ft. lead with a 1/4 in phone plug. All probes
listed are 400 series thermistors.

General-purpose probe, 10 in long x 0.188 in dia.
4 second time constant.

93824-00
TEFLON

®

-coated general-purpose probe, 10 in

long x 0.200 in dia. 7 second time constant.

93824-12
Penetration probe, 4 in long x 0.188 in dia sharp

tip. 6 second time constant.

93824-30
Surface probe, 0.3750 in dia disk. 1.1 second

time constant.

08442-15
Air/gas probe, 1.875 in long with 0.5 in dia stainless

steel radiant heat shield. 10 second time constant.

08438-00
37000-98 Carrying case. Hard plastic case with

foam insert holds one meter and up to five probes.
Measures 21 in W x 12 in H x 3 in D.

8520-05 Soft carrying case. Water-resistant cloth.
Extra room for batteries or small probe. Measures

3.5 in W x 10 in H x 2 in D.
91100-52-115V AC adapter. For 93210-50

thermometer.
91100-55-230V AC adapter. For 93210-50

thermometer. European plug.
37455-70-Infrared printer includes one roll of pa-

per and four AA batteries.
37455-80-Adapter, 110–240V AC, 50/60 Hz, 6-ft

(1.8 m) cord.
91100-85-RS-232-C interface connects to your

computer 9-pin serial port for easy uploading of
data. Use with most popular terminal programs.

W ARRANTY

The Manufacturer warrants this product to be
free from significant deviations from published
specifications. If repair or adjustment is neces­sary within the warranty period, the problem will
be corrected at no charge if it is not due to mis­use or abuse on your part as determined by the
Manufacturer. Repair costs outside the warranty
period, or those resulting from product misuse
or abuse, may be invoiced to you.

The warranty period for this product is noted
on the Warranty Card.

PRODUCT RETURN

To limit charges and delays, contact the seller or
Manufacturer for authorization and shipping in­structions before returning the product, either
within or outside of the warranty period. When
returning the product, please state the reason
for the return. For your protection, pack the prod­uct carefully and insure it against possible dam­age or loss. Any damages resulting from im­proper packaging are your responsibility.

TECHNICAL ASSIST ANCE

If you have any questions about the use of this
product, contact the Manufacturer or authorized
seller.

HEWLETT-PACKARD - Reg TM Hewlett-Packard Corp.
TEFLON - Reg TM E.I. DuPont de Nemours & Co.
Trademarks bearing the ® symbol in this publication are
registered in the U.S. and in other countries.

A-3477-79

Rev. A

Printed in U.S.A.

010600