Digi-Sense 91100-40 Instruction Manual

THERMOCOUPLE THERMOMETER

Dual J-T-E-K

®

MODEL

Cole-Parmer Instrument Co.

V ernon Hills, Illinois U.S.A. 60061-1844

e-mail: techinf [e-mail]

68X309908 Rev. 0 08/03

NO. 91100-40

625 East Bunker Court

[phone]

[phone] (Fax)

800-323-4340

www.coleparmer .com

A-1299-0632

Edition 07

CERTIFICA TE OF
CONFORMANCE

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

This instrument conforms to
NIST monograph 175 revised 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 an NIST certificate of traceabil-

ity with test data and test date for meter and
probe please contact:

Cole-Parmer Instrument Company

625 East Bunker Court

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

Toll-free: 800-323-4340

INTRODUCTION

This versatile hand-held instrument provides highly
accurate temperature measurements in Celsius, or
Fahrenheit, using a wide range of thermocouple
types. The temperature range for each type ther­mocouple is listed in the following chart.

TYPE °C °F

J –200 to 1000 –328 to 1832
K –250 to 1372 –418 to 2501
T –250 to 400 –418 to 752
E –250 to 1000 –418 to 1832

1

The instrument is designed for easy operation and
includes the following f eatures:

•Operator selection of temperature scale

•Resolution of 0.1° from −150°C to 999.9°C
(−238°F to 999.9°F)

•LCD with three four-digit displays

• T wo (2-blade f emale) ANSI mini-connector inputs

•Hold feature for temporarily retaining a reading

•T wo-point field calibr ation capability

•Low battery warning

•Stores up to 25 readings

•Scrolls through all stored readings

•Displays MIN and MAX readings

•Scrolls between T1, T2, and T1-T2 readings

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

2

SAFETY PRECAUTIONS

WARNING

LOW LEVEL SIGNALS SUPPLIED BY STAN­DARD THERMOCOUPLES. UNDER NO CIR­CUMSTANCES SHOULD THE INPUT VOL TA GE
EXCEED THE SPECIFIED 50V RMS.

CAUTION

MICROWAVE OVENS OR ANY ABNORMALLY
HOT OR COLD AREAS.

CAUTION

STRUMENT. DEAD BA TTERIES CAN LEAK AND
CAUSE D AMA G E TO UNIT.

DANGER

MA Y ALSO BE PRESENT AT THE BA TTER Y TER­MINALS. AL WAYS DISCONNECT THE THERMO­COUPLE WHEN CHANGING BATTERIES.

WARNING

PHERE, BA TTERIES MUST ONLY BE CHANGED
IN AN AREA KNOWN TO BE NON-HAZARDOUS .

AVERTISSEMENT

D’ATMOSPHERES DANGEREUSES, NE
CHANGER LES BATTERIES QUE DANS DES
EMPLACEMENTS DESIGNES NON DAN­GEREUX.

WARNING

PHERE BY ELECTROSTATIC DISCHARGE,
CLEAN WITH DAMP CLOTH.

THIS INSTRUMENT IS
DESIGNED TO ACCEPT

DO NOT USE OR STORE
THIS INSTRUMENT IN

WEAK BA TTERIES SHOULD
NOT BE LEFT IN THE IN-

VOLTAGES PRESENT AT
THE THERMOCOUPLES

TO PREVENT IGNITION OF
A HAZARDOUS ATMOS-

AFIN DE PREVENIR
L’ INFLAMMATION

TO PREVENT IGNITION OF
A HAZARDOUS ATMOS-

3

SPECIFICATIONS

THERMOCOUPLE PROBES

Ty pe Temperature Range

Type J: –200°C to 1000°C (–328°F to 1832°F )
Type K: –250°C to 1372°C (–418°F to 2501°F )
T ype T: –250°C to 400°C (–418°F to 752°F )
Type E: –250°C to 1000°C (–418°F to 1832°F )

Accuracy > –150°C: ±0.1% of reading, ±0.4°C

(±0.7°F)

Accuracy < –150°C: ±0.25% of reading, ±1°C

(±2°F)

Linearization: Conforms to NIST monograph 175

revised to ITS-90.

Input Protection: 50V rms
Conversion Rate: Reading 0.6 seconds per

update.

Connector: Two-blade f emale ANSI mini-connector

inputs.

Battery

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

IEC-LR6

Life: 750 hours continuous, typical

Display: LCD with 0.4 in high characters main

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

4

Temperature/Humidity Range
Operating:

Stated Accuracy: 18°C to 28°C
Useful Range: 0°C to 40°C
Storage: −40°C to 65°C
Humidity: 10% to 90%

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.

Intrinsic safety

This product is energy limited for intrinsically safe
operation in hydrogen atmospheres per Class I,
Division 1, Groups A, B, C, and D hazardous
(classified) locations for UL per UL913 and CSA
per C22.2 No. 0-M1982 and No. 157-M1987.
Maximum surface temperature: 135°C (T4); UL
file No. E182612 (1997).

Compliance (For CE Mark)

EN61326-1/A1: 1998 (EU EMC Directiv e)

(64°F to 82°F)
(32°F to 104°F)
(−40°F to 149°F)
(non-condensing)

5

BATTERY INSTALLATION AND

REPLACEMENT

CAUTION

INSTRUMENT. DEAD BATTERIES CAN LEAK
AND CAUSE DAMAGE T O UNIT.

DANGER

MA Y ALSO BE PRESENT AT THE BA TTER Y TER­MINALS. AL WAYS DISCONNECT THE THERMO­COUPLE WHEN CHANGING BATTERIES.

WARNING

PHERE, BA TTERIES MUST ONLY BE CHANGED
IN AN AREA KNOWN TO BE NON-HAZARDOUS .

AVERTISSEMENT

D’ATMOSPHERES DANGEREUSES, NE
CHANGER LES BATTERIES QUE DANS DES
EMPLACEMENTS DESIGNES NON DAN­GEREUX.

WEAK BA TTERIES SHOULD
NOT BE LEFT IN THE

VOLTAGES PRESENT AT
THE THERMOCOUPLES

TO PREVENT IGNITION OF
A HAZARDOUS ATMOS-

AFIN DE PREVENIR
L’ INFLAMMATION

6

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.

A T THIS POINT BATTER Y MUST BE CHANGED .
IF BATTERY VOLTAGE GOES TOO LOW, DIS­PLA Y WILL GO BLANK.

See SPECIFICA TIONS f or battery type.

1. Before changing battery , turn instrument off and
disconnect thermocouple(s).

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

3. Remove the two AA batteries.

4. Insert two new batteries observing polarity .

5. Install cover and tighten screw.

7

CONNECTING A THERMOCOUPLE

Note: Be sure your instrument setting (J, T, E or K)

matches the thermocouple you are using.
Use the correct thermocouple type for your instru-

ment. Using an incorrect thermocouple type will
result in erroneous readings. Thermocouples are
color coded by type using the North American ANSI
color code as follows:

TYPE COLOR

J Black
K Yellow
T Blue
E Purple

Thermocouple connectors have one wide blade and
one narrow blade.

wards.

Connect thermocouple(s) to receptacle at

top of instrument.

Do not force connector in back-

If only one thermocouple is being used, it can be
connected to either T1 or T2. The thermometer will
automatically determine which connector is being
used. When two thermocouples are used, connect
one to the T1 connector and one to the T2
connector.

Thermocouple wiring polarity must be correct. If
readings decrease as the temperature increases,
the thermocouple wires may be reversed. The red
wire is negative for thermocouple wires manufac­tured in North America.

8

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