Platinum RTD Probes
Spring Loaded for Thermowells
Standard and Metric Dimensions
PRTF-19 sub-miniature
aluminum head, NB-4.
PRTF-18
aluminum
head, NB-3.
PRTF Series
Starts at
$
81
PRTF-14 miniature
aluminum head, NB-2.
PRTF-12-SL
cast iron
head, NB-1.
⻬ Assemblies Include Spring
C
Loaded Probes for Improved
Response Time and
Vibration Resistance When
Used in Thermowells*
⻬ Standard Probes Supplied
with 100 Ω Thin Film Class
“B” DIN Platinum Elements
in 3-Wire Configurations
(2- and 4-Wire Available)
with IEC751/ASTM-E-1137
Color Codes
⻬ Multiple Connection Head
Options Include Screw
Cover and Snap Locking
Enclosures with Ceramic
Terminal Boards
⻬ Full Line of Connection
Head Mountable 4 to
20 mA Transmitters are
Available for Use with
These Sensors
*Note: When installed in a thermowell,
the thread engagement will equal the
spring loading compression length.
Products shown
smaller than
actual size.
1
⁄2 NPT
mounting
thread
standard.
Standard Dimensions
To Order
Model Number Type†at 0°C Length Price OD Price
PRTF-(**)-2-100-(*)-6-E-SL 2 100 6" $81 $85
PRTF-(**)-2-100-(*)-9-E-SL 2 100 9" 81 85
PRTF-(**)-2-100-(*)-12-E-SL
PRTF-(**)-2-100-(*)-18-E-SL
PRTF-(**)-2-100-(*)-24-E-SL
Specify: “1/8”, “3/16” or “1/4” for probe diameter in inches. Other lengths readily available.
*
See next page for connection head options.
**
† 3-wire lead configuration standard; others available, contact sales for other configurations.
Ordering Example: PRTF-12-2-100-1/14-6-E-SL, industrial RTD probe with cast iron
head, 3-wire configuration (style 2), 100 Ω, 1⁄4" diameter, 6" length, European curve
(␣ = 0.00385), $81.
(Specify Model Number)
MOST POPULAR MODELS HIGHLIGHTED!
Lead Ohms Sheath1/4"
2 100 12" 81 85
2 100 18" 87 91
2 100 24" 93 97
OD1/8or 3/16"
Metric Dimensions
To Order
Model Number Type†at 0°C Length OD Price OD Price
PRTF-(**)-2-100-(*)-150-E-SL
PRTF-(**)-2-100-(*)-225-E-SL
PRTF-(**)-2-100-(*)-300-E-SL
PRTF-(**)-2-100-(*)-450-E-SL
PRTF-(**)-2-100-(*)-600-E-SL
Specify: “M30”, “M45” or “M60” for probe diameter in millimeters. Other lengths readily available.
*
See next page for connection head options.
**
† 3-wire lead configuration standard; others available, contact sales for other configurations.
Ordering Example: PRTF-12-2-100-M60-150-E-SL, industrial RTD probe with cast iron head, 3-wire
configuration (style 2), 100 Ω, 6 mm diameter, 150 mm length, European curve (␣ = 0.00385), $81.
(Specify Model Number)
Lead Ohms Sheath 6 mm
2 100 150 mm $81 $85
2 100 225 mm 81 85
2 100 300 mm 81 85
2 100 450 mm 87 91
2 100 600 mm 93 97
C-60
3 or 4.5 mm
Platinum RTD Probes
ACCURACY
IEC CLASS
BB
(±0.30ºC @ 0ºC)
Industrial Fixed Length Design
Standard and Metric Dimensions
PRTF Series
Starts at
$
70
Length
Products shown
smaller than
actual size.
PR-19 sub-miniature
aluminum head.
PR-18
aluminum
head, NB-3.
1
⁄2 NPT
mounting
thread
standard.
Available!
Probes with
Built-In Transmitters!
Please See Pages N-35
Through N-44.
Use RTD Extension Wire,
e.g., EXTT-3CU Series.
Please see page C-78.
⻬ Rugged Design Offers a Variety
of Protection Heads with
1
⁄2 NPT Mounting Threads and
a Screw-Type Terminal Block
PR-14 miniature
aluminum head, NB-2.
⻬ Probe is Fixed Length,
304 SST Sheath Connected
to 304 SST Hex Fitting
⻬ 100 Ω Thin Film Class “B” DIN
Platinum Sensors
⻬ Standard 3-Wire Configurations
with IEC751/ASTM-E-1137
Color Codes (2- and 4-Wire
Configurations also Available)
⻬ Operating Temperature:
-60 to 500ºC
⻬ Probe Can be Used as a
Direct Immersion Sensor with
the Protection Head Isolating
the Connections from the
PR-12
cast iron
head,
NB-1.
Outside Environment
⻬ Optional 4 to 20 mA
Transmitters Can
Conveniently be Installed
into Some Models of
Protection Heads
Standard Dimensions
To Order
(Specify Model Number)
MOST POPULAR MODELS HIGHLIGHTED!
Lead Ohms Sheath1/4"
OD1/8or 3/16"
Model Number Type†at 0°C Length Price OD Price
PRTF-(**)-2-100-(*)-6-E 2 100 6" $70 $74
PRTF-(**)-2-100-(*)-9-E 2 100 9" 70 74
PRTF-(**)-2-100-(*)-12-E 2 100 12" 70 74
PRTF-(**)-2-100-(*)-18-E 2 100 18" 73 77
PRTF-(**)-2-100-(*)-24-E 2 100 24" 76 80
Specify: “1/8”, “3/16” or “1/4” for probe diameter in inches. Other lengths readily available.
*
Specify protection head style: “12” for cast iron, “14” for miniature aluminum, “18” for
**
aluminum, “19” for subminiature aluminum.
† 3-wire lead configuration standard; others available, contact sales for other configurations.
Ordering Example: PRTF-12-2-100-1/14-6-E, industrial RTD probe with cast iron head, 3-wire
configuration (style 2), 100 Ω, 1⁄4" diameter, 6" length, European curve (␣ = 0.00385), $70.
Metric Dimensions
To Order
Model Number Type†at 0°C Length OD Price OD Price
PRTF-(**)-2-100-(*)-150-E 2 100 150 mm $70 $74
PRTF-(**)-2-100-(*)-225-E 2 100 225 mm 70 74
PRTF-(**)-2-100-(*)-300-E 2 100 300 mm 70 74
PRTF-(**)-2-100-(*)-450-E 2 100 450 mm 73 77
PRTF-(**)-2-100-(*)-600-E 2 100 600 mm 76 80
Specify: M30, M45 or M60 for probe diameter in millimeters. Other lengths readily available.
*
Specify protection head style: “12” for cast iron, “14” for miniature aluminum, “18” for
**
aluminum, “19” for subminiature aluminum.
† 3-wire lead configuration standard; others available, contact sales for other configurations.
Ordering Example: PRTF-12-2-100-M60-150-E, industrial RTD probe with cast iron head, 3-wire
configuration (style 2), 100 Ω, 6 mm diameter, 150 mm length, European curve (␣ = 0.00385), $70.
(Specify Model Number)
Lead Ohms Sheath 6 mm
C-59
3 or 4.5 mm
Connection Head Options
Model No. Connection Head Style Material Conduit Connection
PRTF-12 NB1 screw top Cast iron
PRTF-14 NB2 screw top sub
miniature
Aluminum
PRTF-18 NB3 flip top Aluminum
PRTF-19 NB4 screw down,
subminiature compression fitting
All of these sensors are
supplied with ceramic
terminal blocks with the
sensors wired as shown.
Use RTD Extension Wire,
e.g., EXTT-3CU Series.
Please see C-78.
Aluminum
1
⁄2 NPT with compression
fitting for
1
⁄2 NPT
1
⁄8 to 1⁄4" OD cable
1
⁄2 NPT
M16 x 1.0 with
For Additional
Transmitter
Options See
Section N
TX92 miniature transmitter,
$188, see page N-39.
TX94 ultra-low profile transmitter,
$105, see page N-40.
TX904 field rangeable transmitter,
$173, see page N-42.
When the sensors are used in remote locations, or in environments where electro-magnetic noise is prevalent. Transmitters are a perfect
choice. The transmitters shown above will convert the resistance of the RTD to a 4 to 20 mA signal.
OMEGA can supply your thermowell needs, the following are styles available from stock:
260S Series general use thermowell,
$20, see page B-20.
260A Series limited space thermowell,
$20, see page B-33.
260L Series lagging extension thermowell,
$28, see page B-19.
260F Series flanged thermowell,
$35, see page B-30.
C-61
One Omega Drive | Stamford, CT 06907 | 1-888-TC-OMEGA (1-888-826-6342) | info@omega.com
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