80PK-22 - Fluke Electronics

80PK-22

SureGripTM Immersion

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-22 SureGripTM Immersion Temperature 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-22 can be used with any temperature-

measuring instrument that is designed to accept Type K

thermocouples and has a miniature connector input.

Note

The 80PK-22 is not recommended for use in food or

beverage preparation. Use 80PK-25 for food

preparation.

Specifications

Type

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

Measurement Range

-40 °C to 1090 °C (-40 °F to 1994 °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 1090 °C

(527 °F to 1994 °F)

±0.4 %

November 2004

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 still water at sea level

pressure. Complete step change equals 5 time constants (3.75

seconds).

Maximum Voltage

24 V ac rms or 60 V dc

Maximum Temperature of Tip

1090 °C (1994 °F)

Sheath

Material: Alloy 600

Dimensions:

Diameter: 3.175 mm (1/8 in)

Length: 212.725 mm (8.375 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: 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

31.75 cm (12.5 in) from probe 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-22 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-22 accuracy specification to determine the overall

accuracy of the combination.

Temperature Limitations

The probe tip of the 80PK-22 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-22 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-22 as follows:

1. Connect the 80PK-22 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 “Troubleshooting”.

Minimizing Thermal Shunting

The 80PK-22 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

8.375"

(212.725 mm)

Diameter: .125" (3.175 mm)

bai01f.eps

Figure 1. 80PK-22

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