Fluke 80PK-2A User Manual

80PK-2A

Type K Immersion Probe

Instruction Sheet

WARNING

TO AVOID ELECTRICAL SHOCK, DO NOT USE
THIS PROBE WHEN VOLTAGES EXCEEDING 24V
AC RMS OR 60V DC ARE PRESENT. THE PROBE
TIP IS ELECTRICALLY CONNECTED TO THE
OUTPUT TERMINALS.

INTRODUCTION

The 80PK-2A Type K Thermocouple Immersion Probe is
designed for use in liquids or gels. The probe can also be used
as a general purpose temperature probe. The thermocouple
junction is protected from tip to handle by an Inconel sheath.
The 40-inch (1-meter) cable is terminated with a Type K
miniature thermocouple connector with 0.792-mm (0.312-in)
pin spacing. The 80PK-2A can be used with any temperature­measuring instrument that is designed to accept Type K
thermocouples and has a miniature connector input.

NOTE

The 80PK-2A is not recommended for use in food or
beverage preparation.

®

SPECIFICATIONS

Type:

K Standard grade Ni-Cr vs. Ni-Al (Chromel vs. Alumel)

Measurement Range:
Accuracy:

Error)

All error calculations should be done in °C, then
scaled to

RANGE

-40°C to 275°C
(-40°F to 527°F)

275°C to 1090°C
(527°F to 1994°F)

November 1987 Rev. 4, 4/02

© 1987-2002 Fluke Corporation. All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.

(With respect to ANSI MC96.1 Standard Limits of

°F

.

-40°C to 1090°C (-40°F to 1994°F)

NOTE

ACCURACY
(% of reading)

±2.2°C

±0.75% (°C)

Output:
Seebeck Coefficient:
Measurement Time:

still water at sea level pressure. Complete step change equals
5 time constants (3.75 seconds).

Maximum Voltage:
Maximum Temperature of Tip:

@ 25°C (77°F) =1.00 mV (reference junction @ 0°C)

@ 25°C (77°F) = 40.50 µV / °C

(Time Constant): .75 seconds in 100°C

24V ac rms or 60V dc

1090°C (1994°F)

Sheath:

Material: Inconel 600
Dimensions:

Diameter: 3.175 mm (1/8 in)
Length: 20.32 cm (8 in)

Grounding:

Junction welded to sheath.

Cable:

Length: 40 inches (1 meter)
Insulation:

Material: PVC
Maximum Temperature: 105°C (220°F)
Jacket Color: Gray

Conductors:

Type: K
Size: AWG #24 stranded (7 strands of #32)

Handle:

Material: Gray Hytrel
Maximum Temperature: 125°C (257°F)

Connector:

Type: Mini-thermocouple connector with .792 mm (0.312 in)
pin spacing

Material: Yellow Hytrel
Maximum Temperature: 125°C (257°F)

Overall Length:

cable strain relief.

Protection:

grounding properties defined in IEC 348.

31.75 cm (12.5 in) from probe tip to end of

Class 3. Relates solely to insulation and

MEASUREMENT CONSIDERATIONS

Instrument Compatibility

The 80PK-2A is compatible with any temperature-measuring
instrument that accepts Type K thermocouples, has a
miniature thermocouple connector, and has cold reference
junction compensation. Accuracy of the temperature­measuring instrument must be considered along with the
80PK-2A accuracy specification to determine the overall
accuracy of the combination.

Temperature Limitations

The probe tip of the 80PK-2A has a continuous temperature
rating of 1090°C (1994°F). However the opposite end of the
sheath nearest the handle should not be subjected to
temperatures greater than 125°C (257°F). This is the maximum
temperature limitation of the handle.

Media Limitations

The sheath material of the 80PK-2A is Inconel, an alloy of
chromium and nickel. It has excellent resistance to oxidation
and corrosion at high temperatures, but it should not be used
in the presence of sulfur above 537°C (1000°F).

OPERATION

Use the 80PK-2A as follows:

1. Connect the 80PK-2A to a compatible Type K temperature
measuring instrument using the miniature (0.312-inch pin
spacing) thermocouple connector.

2. Turn on the measuring instrument, and select the
appropriate range and scale.

3. Check the readout on the measuring instrument. With no
heat or cold source applied to the tip of the probe, the
measuring instrument should display the ambient (room)
temperature. If the instrument does not read out properly,
refer to the TROUBLESHOOTING paragraphs below.

MINIMIZING THERMAL SHUNTING

The 80PK-2A Immersion Probe should be inserted at least

6.35 cm (2.5 in) into the environment to be measured to

minimize the shunting effect of the sheath.

TROUBLESHOOTING

With no heat or cold applied to the probe, the measuring
instrument should display the ambient temperature. If the
measuring instrument does not read out properly, try the
following:

1. Verify that the temperature-measuring instrument is
designed to be used with Type K thermocouples. The
temperature-measuring instrument should have a yellow

input connector and / or be marked with a “K” either on the
case or on the display.

2. Check for an open circuit indicator on the measuring
instrument. Some temperature measuring instruments
have a built-in circuit to indicate if the connected probe is
open. (All Fluke Temperature-measuring instruments have
this feature.) Refer to the owners manual accompanying
the measuring instrument to see if this feature is available.

Short the two input pins of the measuring instrument with
a piece of wire. If the instrument is functioning, it should
indicate the ambient temperature.

3. If you suspect a broken connection, use an ordinary
ohmmeter to read the continuity of the probe from pin to
pin. The ohmmeter should read 10 ohms or less if there is
continuity.

SCALE CONVERSIONS

Use the following equation to convert °C to °F:

(°C x 1.8) + 32 = °F

Use the following equation to convert °F to °C:

(°F –32) x 0.5556 = °C

PROBE MOUNTING GROOVE

The probe finger guard contains a groove to simplify mounting
the probe in a fixed position. The figure below shows nominal
dimensions for the finger guard and groove, and suggests a
temporary quick mounting method. However, any mounting
method should be carefully designed to prevent damage to the
probe or the measured medium.

CAUTION

The handle and plug of the probe are made of
material that may deteriorate when exposed to
some solvents on a long-term basis.

1.6 mm
(.062 in)

20.3 mm
(.80 in)

23.6 mm
(.930 in)

CLIP NOT INCLUDED WITH PROBE

FINGERS MAY BE
BENT UP SLIGHTLY
FOR PROBE
RETENTION

LIMITED WARRANTY & LIMITATION OF LIABILITY

Each Fluke product is warranted to be free from defects in material
and workmanship under normal use and service. The warranty period
is one year and begins on the date of shipment. Parts, pr oduc t repai rs
and services are warranted for 90 days. This warranty extends only to
the original buyer or end-user customer of a Fluke authorized reseller,
and does not apply to fuses, disposable batteries or to any product

which, in Fluke’s opinion, has been misused, altered, neglected or
damaged by accident or abnormal conditions of operation or
handling. Fluke warrants that software will operate substantially in
accordance with its functional specifications for 90 days and that it
has been properly recorded on non-defective media. Fluke does not
warrant that software will be error fre e or opera t e wit hout int er ruption.

Fluke authorized resellers shall e x tend t his warra nt y on new and
unused products to end-user customers only but ha ve no authority to
extend a greater or different warranty on behalf of Fluke. Warranty
support is available if product is purchased through a Fluke
authorized sales outlet or Buyer has paid t he applicable international
price. Fluke reserves the right to invoice Buyer for importation costs
of repair/replacement parts when product purchased in one country is
submitted for repair in another country.

Fluke’s warranty obligati on is limited, at Fluke’s option, to refund of
the purchase price, free of charge repair, or replacement of a defective
product which is returned to a Fluke authorized service center within
the warranty period.

To obtain warranty service, contact your nearest Fluke authorized
service center or send the product, with a description of the difficulty,
postage and insurance prepaid (FOB Destination), to the nearest Fluke
authorized service center. Fluke assu mes no risk for damage in
transit. Following warra nty re pair t he product wil l be ret urned to
Buyer, transportation prepaid (FOB Destination). If Fluke determines
that the failure was caused by misuse, altera tion, accident or
abnormal condition of operation or ha ndling, Fluke will provide an
estimate of repair costs and obtain authorization before commencing
the work. Following repair, the produc t will be returned to the Buyer
transportation prepaid and the Buyer will be billed for the repair and
return transportation charges (FOB Shipping Point).

THIS WARRANTY IS BUYER’S SOLE AND EXCLUSIVE REMEDY AND
IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT,
INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES,
INCLUDING LOSS OF DATA, WHETHER ARISING FROM BREACH OF
WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY
OTHER THEORY.

Since some countries or states do not allow limi t ation of the term of
an implied warranty, or exclusion or limita tion of incidental or
consequential damages, the limi t a ti ons and exc lusions of this
warranty may not apply to every buyer. If any provision of this
Warranty is held invalid or unenforceable by a court of competent
jurisdiction, such holding will not effect the validity or enforceability
of any other provision.

5/94

For application or operation assistance, or information on
Fluke products, call:

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Or, visit Fluke’s Web site at www.fluke.com.
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