Instrukcja obsługi Fluke SureGrip 80PK-26

Fluke Niesklasyfikowane SureGrip 80PK-26

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®
80PK-26
SureGripTM Tapered
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-26 SureGripTM Tapered Temperature Probe is
essentially a bead probe with a handle that can be used
as a surface probe. The stainless steel sheath allows the
bead to measure temperatures higher than bead probes
with flexible leads. The handle also allows you to apply
more focused surface pressure without having your hand
in close proximity to the source. The 40-inch (1-meter)
cable is terminated with a Type K miniature thermocouple
connector with 0.792-mm (.312-in) pin spacing. The
80PK-26 can be used with any temperature-measuring
instrument that is designed to accept Type K
thermocouples and has 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 293 °C
(-40 °F to 559.4 °F)
±2.2 °C
293 °C to 816 °C
(559.4 °F to 1500 °F)
±0.75 %
November 2004 Rev.2, 9/09
© 2004-2009 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 for 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)
Sheath
Material: 304 Stainless Steel
Dimensions
Diameter: 4.8 mm (.19 in)
Length: 20.32 cm (8 in)
Bead (sensor) Sheath
Material: Inconel 600
Dimensions
Diameter: 1.5748 mm (.062 in)
Length: 11.049 mm (.435 in)
Grounding
Junction Welded to Sheath.
Cable
Length: 1 meter (40 in)
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
(.0312 in) pin spacing
Material: Yellow Hytrel
Maximum Temperature: 1.25 °C (257 °F)
Overall Probe Length
31.9 cm (12.55 in) from 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-26 is compatible with any temperature-
measuring instrument that’s 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-26 accuracy specification
to determine the overall accuracy of the combination.
Temperature Limitations
The tip area (thermocouple-sheath) of the 80PK-26 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 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-26 should not
be used in reducing atmospheres or in a vacuum. Excess
mounting force can deform or crush the bead. With the
probe perpendicular to the measurement surface, do not
apply more than 12.25 new tons (2.75 pounds-force). Use
proportionally less force as the angle to the measurement
surface becomes more acute.
Operation
Use the 80PK-26 as follows:
1. Using the miniature (0.312 inch spacing)
thermocouple, connect the 80PK-26 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 bead, 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-26 Tapered Temperature 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.
Measuring Technique
Here are some suggestions for improving the accuracy of
your temperature measurements:
1. Make sure there is a good connection between
the probe and the surface you are measuring by
doing any of the following:
a. Increase the mounting pressure
b. Use an interface agent (such as silicone grease)
between the thermocouple probe and the surface
you are measuring.
c. Use a thermal epoxy to attach the thermocouple.

Specyfikacje produktu

Marka: Fluke
Kategoria: Niesklasyfikowane
Model: SureGrip 80PK-26

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