®
80PK-24
SureGripTM Air Temperature
Probe
Instruction Sheet
XWWarning
To avoid electrical shock, do not use this
probe when voltages exceeding 24 V ac rms
or 60 V dc are present. The probe tip is
electronically connected to the output
terminals.
Introduction
The 80PK-24 SureGripTM Air Temperature Probe is
designed for measuring the temperature of air or gases.
The measuring bead of the probe is protected by a
perforated 304 Stainless Steel baffle to prevent accidental
damage. The sheath material is 300 Stainless Steel. The
38-inch (1 meter) cable is terminated with a Type K
miniature thermocouple connector with 0.792-mm (.312-in)
pin spacing. The 80PK-24 can be used with any
temperature-measuring instrument that is designed to
accept Type K thermocouples and has a miniature
connector input.
Specifications
Type
K Standard Grade Ni-Cr vs Ni-Al (Chromel vs Alumel)
Measurement Range
-40 °C to 816 °C (-40 °F to 1500 °F)
Accuracy
(With respect to ANSI MC96.1-1982-Standard Limits of
Error):
Note
All error calculations should be done in °C, then
scaled to °F.
Range Accuracy
(% of reading)
-40 °C to 0 °C
(-40 °F to 32 °F)
±2.2 °C
0 °C to 275 °C
(32 °F to 527 °F)
±1.1 °C
275 °C to 816 °C
(527 °F to 1500 °F)
±0.4 %
November 2004
© 2004 Fluke Corporation. All rights reserved.
All product names are trademarks of their respective companies
Output
@ 25 °C (77 °F) =1.00 mV (reference junction @ 0 °C)
Seebeck Coefficient
@ 25°C (77°F) =40.50 µV / °C
Measurement Time (Time Constant)
3.0 seconds in 100 °C air moving at 3.33 meters/second
(10.9 feet/ second) at sea level pressure (5 time constants
= 1 complete step change, i.e., 15 seconds).
Maximum Voltage: 24 V ac rms or 60 V dc
Maximum Temperature of Tip: 816 °C (1500 °F)
Baffle
Material: 304 Stainless Steel Dimensions
Diameter: 3.81 mm (0.150 in)
Length: 3.3 cm (1.3 in)
Sheath
Material: 304 Stainless Steel Dimensions
Diameter: 3.175 mm (0.125 in)
Length: 215.9 mm (8.5 in) from handle body to end of
baffle
Grounding
Junction welded to sheath.
Cable
Length: 38 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: 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
31.9 cm (12.55 in) from baffle tip to end of cable strain
relief.
Protection
Class 3. Relates solely to insulation and grounding
properties defined in IEC 348.
Measurement Considerations
Instrument Compatibility
The 80PK-24 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
temperature-measuring instrument must be considered
along with the 80PK-24 accuracy specification to
determine the overall accuracy of the combination.
Temperature Limitations
The baffle tip of the 80PK-24 has a continuous
temperature rating of 816 °C (1500 °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 stainless steel baffle and sheath should not be
exposed to halides or sulfides. Even though the sheath to
junction transition is sealed, it is not recommended to
immerse the probe in liquid or saturated vapor. The 80PK-
24 should not be used in reducing atmospheres or in a
vacuum.
Operation
Use the 80PK-24 as follows:
1. Use the miniature (0.312-inch spacing) thermocouple
connector to connect the 80PK-24 to a compatible
Type K temperature-measuring instrument.
2. Turn on the measuring instrument, and select the
appropriate range and scale.
3. Check the read out 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 “Troubleshooting”.
Minimizing Thermal Shunting
The 80PK-24 Air 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”.
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 20 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
8.5"
(215.90 mm)
Diameter: .125" (3.175 mm)
Diameter: .150" (3.81 mm)
bag01f.eps
Figure 2. 80PK-24
Contacting Fluke
For application or operation assistance, or information on
Fluke products, call:
USA: 1-888-44-FLUKE (1-888-443-5853)
Canada: 1-800-36-FLUKE (1-800-363-5853)
Europe: +31 402-675-200
Japan: +81-3-3434-0181
Singapore: +65-738-5655
Anywhere in the world: +1-425-446-5500
For USA Service: 1-888-99-FLUKE
(1-888-993-5853)
Or, visit Fluke's Web site at www.fluke.com.
To register your product, visit register.fluke.com
ONE YEAR LIMITED WARRANTY
This Fluke product will be free from defects in material and
workmanship for one year from the date of purchase. This
warranty does not cover fuses, disposable batteries, or
damage from accident, neglect, misuse, alteration,
contamination, or abnormal conditions of operation or
handling. Resellers are not authorized to extend any other
warranty on Fluke’s behalf. To obtain service during the
warranty period, contact your nearest Fluke authorized
service center to obtain return authorization information,
then send the product to that Service Center with a
description of the problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO
OTHER WARRANTIES, SUCH AS FITNESS FOR A
PARTICULAR PURPOSE, ARE EXPRESSED OR
IMPLIED. FLUKE IS NOT LIABLE FOR ANY SPECIAL,
INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES OR LOSSES, ARISING FROM ANY CAUSE
OR THEORY. Since some states or countries do not allow
the exclusion or limitation of an implied warranty or of
incidental or consequential damages, this limitation of
liability may not apply to you.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
11/99
