
8
172
Self-Adhesive
Sur
face
Probe
112
Fine-Tip
Penetration
Probe
305
Miniature
Air/Gas
Probe
204CT
Paddle Probe
205
Heavy-duty
Immersion Probe
205SH
Heavy-Duty
Shielded
Immersion
Probe
155
Bolt-on
Surface
Probe
Platinum resistance temperature detectors (RTD’s) are recognized
worldwide by metrology laboratories as the most reliable standard for
measuring and comparing temperature information. Platinum provides
l
ong-term stability and repeatability for use as a primary standard. It
has a wide useful temperature range which makes it ideal for
laboratory and industrial applications.
Our accurate, stable platinum sensors are housed in thin wall stainless
s
teel shanks with low mass tips that don’t compete with the measured
object. That’s why Wahl probes have fast response, and provide an
accuracy of ±0.2°F at ice point, ±0.5% of reading thereafter.
Every probe is engineered to do a specific job in measuring surfaces,
liquids, semi-solids or gasses. Each probe has a high quality, heat-
resistant Delrin
®
handle, a coiled 5-foot cord and a snap-in connector
t
hat mates it solidly to our thermometer (exceptions noted in
descriptions below).
Every probe is calibrated at two or three temperature points on NIST
traceable secondary standards and tagged “Wahl Test Certified” with
c
alibration data. You can order a NIST certificate with test data for
meters and probes. See page 6.
Response time legend (to 63%):
(
1)
Measured on flat surface at 400°F;
(2)
Measured in boiling water;
(3)
Measured in air at 10 fps
Custom Probes for Your Applications
Contact Wahl for custom-made probes to your specifications,
or let us help you design the right probe for your application.
112 Fine-Tip Penetration Probe for foods and other soft substances.
.084" diameter, 1" long tip at the end of a 2-3/4" overall length
shank. 450°F temperature limit with 3 second response
(2)
.
114 Heavy-Duty Piercing Probe for plastic melts, rubber, asphalt,
frozen foods, or other semi-solids. Adjustable penetration depth
limiter. 900°F temperature limit with 3.7 second response
(
2)
.
4-1/2" shank length is 1/8" diameter with penetration tip.
121 Spring Articulated Straight Surface Probe for molds, dies,
platens, electronics, machine housings and all other surfaces.
Spring tip allows conformity and maximum contact to measured
surface. 900°F temperature limit; 2-second response
(1)
. 4-1/4"
shank, .25" diameter, straight tip design. Also with
-12" and -18"
shank lengths.
123U Right Angle Fast Surface Probe sealed sensor design with low
profile 90° bend tip for reaching into die and mold cavities,
electronic chassis, or other restricted areas. 900°F temperature
limit, 3-second response
(1)
. 4" shank, .250" diameter tip
124 Rigid Shank Fast Surface Probe. Sealed sensor design for
rugged applications. 4" shank length, straight tip. 900°F
temperature limit with 3 second response
(1)
.
145 45° Spring Articulated Surface Probe, for molds, dies, platens,
electronics, and all other surfaces. Spring tip allows conformity
and maximum contact. 4" shank and 45° tip angle.
155 Bolt-on Surface Probe for permanent installation. Used to
monitor engine or reactor surface temperatures. Copper
sheathed sensor with .218" diameter bolt hole. 10' stainless
steel covered cable and connector. 930°F; 2 second response
(
2)
.
No handle.
172 Self-Adhesive Surface Probe Polymer-encased sensor in a 1.25"
x 1", pressure-sensitive adhesive patch. 10' Teflon coated cable
(no handle). Used for monitoring environmental tests, curing
cycles, and oven processing. 350°F temperature limit with 1
second response
(
2)
.
201 General Purpose Immersion Probe for liquids, foods, candy,
granular materials, and semi-solids. 5.75" long X .125" diameter
shank. For measurements to 600°F with 1.7 second response
(
2)
.
202 Sensitive Immersion Probe with low mass .084" diameter. 5"
long shank. Super fast response time of 1.4 seconds
(
2)
for use in
all liquids and semi-solids. Temperature limit of 900°F.
Pr
obe listing
continued on page 9
RTD Meters
392 Series
Platinum RTD Probes
392 Series Platinum
RTD Probes
(800) 421-2853 • FAX (828) 658-0728 • www.palmerwahl.com
05/08
Calibration Ser
vices A
vailable
170 Y
ears of Continued Innovation
For 392HP Probes, simply add “HP” after Model Number
123U Right Angle
Sur
face Pr
obe
121 Spring Tip
Surface Probe
Look for the “Wahl Tested
Certified” calibration tag
on every probe.
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