Fluke 80PK-8 Manual

Fluke Ikke kategoriseret 80PK-8

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Side 1/3

February 1995, Rev. 2, 5/09

All product names are trademarks of their respective companies.

80PK-8

Type K Thermocouple Pipe Clamp Temperature Probe

Instruction Sheet

Introduction

XWWarning

To avoid electric shock, do not

use this probe when voltages

exceeding 24 V ac or 60 V dc are

present. The probe is electrically

connected to the output terminals.

The 80PK-8 Type K Thermocouple Pipe Clamp

Temperature Probe (Figure 1) is designed to reliably

measure the temperature of pipes ¼-inch (6 mm) to 1

3/8-inch (35 mm) in diameter, at temperatures

between -29 °C and 149 °C (-20 °F and 300 °F),

while retaining a long service life.

Plunger

Sensor

V Notch

80PK8.eps

Figure 1. 80PK-8 Pipe Clamp Temperature Probe

Specifications

Measurement Range: -29 °C to 149 °C (-20 °F to

300 °F)

Accuracy: ±1.9 °C (±.3.4 °F). Surface measurement

accuracy of ± °1.9 C includes ± °1.1 C variation in alloy

plus probe contact and shunting uncertainty of

± °0.8 C.

Repeatability: ± 0.56 °C (±1 °F)

Output: @ 25 ° °C (77 F) = 1.00 mV (Reference

junction at 0 °C)

Seebeck Coefficient:

@ 25 °C (77 ° μ °F) = 40.50 V / C

Measurement Time (Time Constant):

0.5 seconds (5 time constants = 1 complete step

change, i.e. 2.5 seconds)

Maximum Voltage Rating: 24 V ac rms, or 60 V

Sensor Material: Chromel-Alumel

Cable Length: 40 inches (1 meter)

Cable Insulation: Material: PVC

Maximum Temperature: 105 ° °C (220 F)

Minimum Temperature: -29 ° °C (20 F)

Conductor: K Type AWG #24 stranded

Probe Body: PBT

Maximum Temperature: 149 ° °C (300 F)

Minimum Temperature: -29 ° °C (20 F)

Connector: Mini-thermocouple connector with

7.925 mm (0.312 in) pin spacing

Media Limitations: Must be compatible with

chromel, alumel, and PBT

Type K Thermocouple Pipe Clamp Temperature Probe

Using the 80PK-8 to Measure Pipe Temperature

Using the 80PK-8 to Measure

Pipe Temperature

1. Using the miniature thermocouple connector,

connect the 80PK-8 to a compatible Type K

temperature measuring device.

2. Turn on the measuring instrument and select the

appropriate range and scale.

If you are using a temperature conversion module

(the 80TK, for example), insert the module into

the VΩ and COM inputs of the meter and select

the mV dc function.

3. Using your thumb or the palm of your hand, press

down on the plunger to open the jaws of the probe

wide enough to easily encompass the pipe.

Center the pipe on the “V” notch (see Figure 1)

on the jaw of the probe and relax pressure on the

plunger.

4. Read the temperature on the measuring

instrument. When no heat or cold is applied to the

sensor the measuring instrument should display

the ambient temperature. If the instrument does

not readout properly, refer to “Troubleshooting”.

Measurement Considerations

The 80PK-8 is designed to be compatible with any

temperature-measuring instrument that accepts

miniature Type K thermocouples with cold reference

junction compensation. The accuracy of the

temperature-measurement is a factor of the combined

accuracy of the temperature measuring instrument and

the 80PK-8.

A lowering of the temperature at the sensor contact

point is less likely (and response time is faster) on

clean, polished, thermally conductive surfaces, then

on surfaces with low thermal conductivity, such as

plastic or rough, greasy surfaces. To obtain the best

thermal contact and performance, the pipe must be

centered in the “V” notch of the probe jaw.

To get the most accurate temperature measurement,

adjust the connection between the sensor and the pipe

until you get the maximum or minimum temperature

reading.

W Caution

To prevent damage to the probe,

do not rotate the clamp when

measuring the temperature of a

rough surface.

Troubleshooting

When no heat or cold is applied to the probe, the

measuring instrument should display the ambient

temperature. If the measuring instrument does not do

so, try the following:

1. Verify that the temperature measuring instrument

is designed to be used with Type K

thermocouples. The 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 thermometers have a

built in circuit to indicate if the connected probe

is open. (All Fluke instruments have this feature.)

Refer to instruments owners’ manual to see if this

feature is available.

If you suspect a broken connection, use an

ohmmeter to check probe continuity from pin to

pin. If the ohmmeter reads ≤ Ω10 , the probe is

good.

3. Short the two input connectors to the instrument

with a piece of wire. If the instrument is

functioning properly it should display the ambient

temperature.

Cleaning

W Caution

To prevent damage to the probe,

do not use solvents that may

deteriorate the handle and plunger

of the probe.

Using warm-soapy water, brush the sensor lightly

with a toothbrush. Excessive or abrasive brushing can

damage the sensor and void the warranty. If necessary

dip the brush (but not the sensor) in rubbing alcohol.

Produkt Specifikationer

Mærke:	Fluke
Kategori:	Ikke kategoriseret
Model:	80PK-8

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