Chromalox RBF Catalog Page
RBF
Heat Trace
or Pipe Sensor
• Heat Trace or Pipe Sensing
Applications
Heating Cable
• 316 Stainless Steel Sheath
Cold Leg
• Moisture Resistant Heads
Hot Leg
• 3/4” or 1/2” NPT Threaded
Extension Wire Opening
• 4” to 8” Cold Leg Standard for
Mounting Pad
Varying Insulation Depths
• 100 ohm RTD, ± .12% Accuracy
• Fiberglass Insulated RTD Probe
• RTD or Universal Transmitter
Available (Must Specify
Temperature Range)
Description
For measuring the surface temperature of
process piping that is carrying products
whose temperatures must be controlled to
prevent freeze-up, or to maintain a viscosity
level so that the inner medium will flow. The
RTD Sensor Element is made up with a 316SS
sheath, and with a stainless steel mounting
pad. Cold legs are available in customer specified lengths to accommodate pipe insulation
thickness.
Common Range (˚F)
Model Sensor Insulation Junction Min Max
RBF185M-HT RTD Fiberglass
Sheath Leg Lengths
Code Hot Cold
304 3” 4”
306 3” 6”
308 3” 8”
Code Mounting Pads
18RD Fits All Pipe Sizes*
Code Connection Heads
31SB/C Aluminum
49SB/C Flip top Aluminum Head
91SB/C 316L Stainless Steel
93SB/C Aluminum
94SB/C 316L Stainless Steel
RBF-185M-HT 304 18RD 31SB/C
*Mounting pads conform to pipe with pipe clamps
†
Replaces RBF185M-HT-0304-18RD-71SB/C
-100 900
In Stock:
Model PCN
RBF185M-HT-304-18RD-31SB/C 317315 ST
RBF185M-HT-304-18RD-93SB/C 317340 ST
RBF185M-HT-304-18RD-49SB/C 399517 NS
RBF185M-HT-304-18RD-91SB/C 317323 NS
Approvals Chart
Connection
Head
31SB/C N/A N/A N/A N/A
49SB/C N/A N/A N/A N/A
91SB/C N/A N/A N/A N/A
93SB/C Class I Division 1; Groups A,B,C,D
DIP Class II Division 1; Groups E,F,G
Class III; Type 4/4X
94SB/C Class I Division 1; Groups A,B,C,D
DIP Class II Division 1; Groups E,F,G
Class III; Type 4/4X
FM CSA ATEX IECEx
RBF185M-HT-304-18RD-94SB/C 399550 NS
Approval Agency
Class I Division 1; Groups A,B,C,D DIP
Class II Division 1; Groups E,F,G Class
III; Type 4/4X Class I Zone 1 AEx d IIC
Gb; Zone 21 Aex tb IIIC Db; IP66
Class I Division 1; Groups A,B,C,D DIP
Class II Division 1; Groups E,F,G Class
III; Type 4/4X Class I Zone 1 AEx d IIC
Gb; Zone 21 Aex tb IIIC Db; IP66
Stock
Status
Ex II 2 GD
Ex db IIC Gb;
Ex tb IIIC Db; IP66
Ex II 2 GD
Ex db IIC Gb;
Ex tb IIIC Db; IP66
Ex tb IIIC Db; IP66
Ta = -20°C to 100°C
Ex tb IIIC Db; IP66
Ta = -20°C to 100°C
Ex db IIC Gb;
Ex db IIC Gb;
G-98
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