Home > Temperature Sensors > Resistance Temperature Detectors > General Purpose RTDs > Melt Bolt RTD > Melt Bolt RTD
  • Melt-Bolt-Resistance-Temperature-Detectors

Melt Bolt RTD

0.00
Contact Us Request a Quote

RM style melt bolt resistance temperature detectors are designed for dependable temperature measurement of the plastic melt stream within extruders and injection molding equipment. Standard RTD temperature sensor assemblies are supplied with mineral insulated sensing elements for extended pressure and temperature performance. For options at the probe tip, there are thermal barriers of Teflon (500°F) and Mycalex (900°F).

You may also be interested in Durexium™, our melt bolt sensor coating.

RM0 Style Melt Bolt RTD Sensor with Standard Molded Plugs

RTD-Sensor-Melt-Bolt-RM0

Part Number Configuration - Example:  RM0-JG-030-P

RM0 - Element Type + Wiring Configuration - "L" Dimension - "B" Dimension + "A" Dimension + Operating Temperature

 

RM1 Style Melt Bolt RTD Sensor with Standard Plugs on Stainless Steel Armor

RTD-Sensor-Melt-Bolt-RM1

Part Number Configuration - Example:  RM1-JG-030-P

RM1 - Element Type + Wiring Configuration - "L" Dimension - "B" Dimension + "A" Dimension + Operating Temperature

 

RM2 Style Melt Bolt RTD Sensor with Standard Jacks

RTD-Sensor-Melt-Bolt-RM2

Part Number Configuration - Example:  RM2-JG-030-P

RM2 - Element Type + Wiring Configuration - "L" Dimension - "B" Dimension + "A" Dimension + Operating Temperature

 

RM3 Style Melt Bolt RTD Sensor with Standard Jack on Stainless Steel Armor

RTD-Sensor-Melt-Bolt-RM3

Part Number Configuration - Example:  RM3-JG-030-P

RM3 - Element Type + Wiring Configuration - "L" Dimension - "B" Dimension + "A" Dimension + Operating Temperature

 

RM4 Style Melt Bolt RTD Sensor with Spade Lugs on Stainless Steel Armor

RTD-Sensor-Melt-Bolt-RM4

Part Number Configuration - Example:  RM4-JG-030-P

RM4 - Element Type + Wiring Configuration - "L" Dimension - "B" Dimension + "A" Dimension + Operating Temperature

 

RM5 Style Melt Bolt RTD Sensor with Spade Lugs & BX Connector on Stainless Steel Armor

RTD-Sensor-MeltBolt-RM5

Part Number Configuration - Example:  RM5-JG-030-P

RM5 - Element Type + Wiring Configuration - "L" Dimension - "B" Dimension + "A" Dimension + Operating Temperature

 

Resistance Temperature Detector Blank Bolts

RTD-Blank-Bolts-1

Blank bolts occupy the hole when melt bolt is removed. 3" or 6" standard lengths are available. 4" length is a custom order.

Melt Bolt RTD Specs & Options

Back to Top

Element Types

Element Type Code Element Type Description
A 100 ohm .00385 Curve Class B Platinum
B 100 ohm .00385 Curve Class A Platinum
D 500 ohm .00385 Curve Class B Platinum
E 1000 ohm .00385 Curve Class B Platinum
G 100 ohm .00392 Curve Class B Platinum

 

Wiring Configurations

Wiring Configuration Code Wiring Configuration Description
A Single, 2 Wire
B Single, 3 Wire (Minimum sheath diameter .156”)
C Single, 4 Wire (Minimum sheath diameter .188”)
D Dual, 4 Wire (Minimum sheath diameter .188”)
E Dual, 6 Wire (Minimum sheath diameter .250”)

 

Dimensional Chart

"L" Dimensions "B" Dimensions "A" Dimensions Fractional Dimension
Letter Code
“L” dimensions are specified in whole inches and a single alpha character which represents a fraction. Enter the three digit code as follows: “B” dimensions are specified in fractions from ⅛” to 1”. Use the single alpha character to indicate the tip length. Enter the code as follows: “A” dimensions are
specified in whole inches only. Enter the three digit code as follows:		 1/16" A 11/16" L
1/8" B 3/4" M
3/16" C 13/16" N
1/4" D 7/8" P
5/16" E 15/16" R
3" 030 10 5/8" 10K 3/8" F 1" S
4 1/2" 04H 12" 120 1/8" B 5/8" K 9" 009 7/16" G 0 No
6 1/4" 06D 15 3/8" 15F 1/4" D 3/4" M 12" 012 1/2" H  
7 7/8" 07P 17 3/4" 17M 3/8" F 7/8" P 36" 036 9/16" J
9 5/8" 09K 22 1/8" 22B 1/2" H 1" S 144" 144 5/8" K

 

Operating Temperatures

Operating Temperature Code Operating Temperature Description
L 500°F (260°C)
M 900°F (482°C)

 

Melt Bolt RTD Non-Stick Coating

Back to Top
Durex Industries is pleased to offer Durexium™, a multilayer coating option for all melt bolt style temperature sensors. This multilayer coating consists of 16 different layers of Titanium Nitride and Zirconium Nitride, which is using a cathodic arc PVD process at a temperature of 800 °F.

Features:

  • Increase wear life of sensor by up to 12 times
  • Helps prevent material buildup on measuring surface
  • Improves ease of bolt removal
  • Available on all styles of Durex Melt Bolt Sensors
The alternating layers produce a synergistic effect that results in a Vickers hardness of over 4400 Hv. This enhanced hardness combined with the coatings superior abrasion resistance and lubricity results in wear life of up to 12 times longer than typical non-coated sensors. This option has been shown to be especially effective when extruding or molding plastics reinforced with glass fiber or other abrasive materials. Durexium™ coating has also been proven to be effective in extremely abrasive pet food extrusion equipment resulting in a drastic improvement in wear life over non-coated sensors.

Durexium available on following sensors.

Thermocouple - TPM0P or RTD - RM0P


Thermocouple - TPM1P or RTD - RM1P


Thermocouple - TPM2P or RTD - RM2P


Thermocouple - TPM3P or RTD - RM3P


Thermocouple - TPM4P or RTD - RM4P


Thermocouple - TPM5P or RTD - RM5P

Melt Bolt RTD Typical Applications

Back to Top
  • Generators
  • Engines
  • Compressors
  • Pharmaceutical Industries
  • Utilities
  • Chemical Plants
  • Gas Pipelines
  • Food Preparation
  • Refineries
  • Petrochemical plants
  • Paper Mills

Melt Bolt RTD Downloads

Back to Top
Spec Sheet - RTD Melt Bolts 0115-200KB
Resistance Temperature Detectors Catalog - 0115-2MB
Temperature Sensors Catalog - 0115-4MB
Techincal Data - RTD General Specifications 0115-250KB
Temperature Sensor Element Selection Guide - 200KB