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Melt Pressure Transducers for Extrusion Processing

Rigid Stem Transducer | Flexible Armor Tubing Transducer | Pressure and Temperature Transducer

Specifications | Standard Sizes and Ranges | How to Order | Cross Reference Information (PDF)
 

3 Styles of Melt Pressure Transducers
Melt pressure transducers are specifically designed for accuracy, stability, and repeatability. They can be specified with a 0.5% or 0.25% combined error accuracy, a performance that equals or exceeds any other strain gauge melt pressure transducer on the market.

Complete Introduction to Melt Pressure Transducers (PDF)
 
Design Features
  • Stainless Steel Construction
  • Fully Interchangeable with all Existing Strain Gauge Melt Pressure Transducers
  • Fluid Filled System for Temperature Stability
  • 80% Output Signal for Easy Calibration
  • Resistance Calibration Tracking
  • All Stainless Steel Construction
  • Armoloy-Coated Diaphragm
  • Compatible with all Strain Gauge Signal Conditioning & Readout Instrumentation
  • 6- or 8-Pin Bendix Style Connectors available
  • CE Approved
Rigid Stem Transducer
This model converts applied pressure at the point of measurement to a proportional voltage output signal using well established bonded strain gauge design principles. The small capillary tube, filled with a special medium, isolates sensitive strain gauges and electronics from potential thermal damage. The rigid stem makes installation fast and easy.
Flexible Armor Tubing Transducer
This model offers all the advantages of the rigid stem transducer, but incorporates an 18-inch flexible capillary tubing with a stainless steel armored jacket between the strain gauge housing and the stem.
This transducer is designed for applications requiring further thermal isolation or where installation would be otherwise difficult or impractical.
Pressure and Temperature Transducer
This model provides simultaneous measurement of pressure and temperature at a single point. Only one transducer mount is required for installation.
The temperature probe is protected from process hazards and can be replaced without interrupting the pressure signal. Pressure performance is identical to other models.
Design Specifications
Mechanical

Ranges
PSIG BAR
0-500 0-35
0-750 0-50
0-1000 0-75
0-1500 0-100
0-3000 0-200
0-5000 0-350
0-7500 0-500
0-10000 0-700
0-15000 0-1000
0-20000 0-1500


Combined Error/Error Band: ±0.5% or ±0.25% of full-scale
Repeatability: ±0.1% of full-scale
Hysteresis: 0.1% of full-scale
Overload Capability:
  Up to 20,000 PSIG: 2 × full-scale
  Above 20,000 PSIG: 1.5 × full-scale
Mounting Torque: 500 inch-pounds maximum
Diaphragm Material: 15-5PH stn. stl. (Armoloy plated)

Electrical
Measuring Element: Strain gauge Wheatstone bridge
Element Resistance: 350 ohm ±10%
Excitation Voltage: 6-12 Volt DC (10 V rec.)
Sensitivity: 3.33 millivolts/volt ±2%
Zero Balance: ±5.0% full-scale output
Internal Resistance Cali. (Factory Adjusted):
Produces precise electrical signal  which is 80% of full-scale within ±0.25%

Temperature on Strain Gauge Housing
Maximum Temperature: 160°F or 70°C
Zero Drift: 1.0%/100°F or 2.0%/100°C
Sensitivity Drift: 1.0%/100°F or 2.0%/100°C

Temperature on Diaphragm
Max. Temp. (medium): 750°F or 400°C
Zero Shift: 25 PSI/100°F or 45 PSI/100°C

Note: All temperature specifications relate to full-scale output or full pressure range output.

Standard Drill Pattern Specifications

D1 D2 D3 D4 A B C
in mm in mm in mm in mm in mm in mm
1/2 - 20 UNF .313 ± .001 7.95 ± .025 .454 ± .004 11.5 ± .10 .515 min 13 min .225 min 5.7 min .17 max 4.3 max .75 19
M14 x 1.5 .319 ± .001 8.1 ± .025 .478 ± .004 12.1 ± .10 .630 min 16 min .24 min .24 min .16 max 4 max .75 19
M18 x 1.5 .398 ± .01 10.1 ± .25 .634 ± .04 16.1 ± 1.0 .79 min 20 min .24 min 6.1 min .16 max 4 max .99 25




Standard Sizes and Ratings

 
Style Combined Error Connector Pressure Range Stem Length Flex Length Part Number
Rigid Stem 0.5% CE 6 Pin 0-5000 6" None PDD00101
Rigid Stem 0.5% CE 6 Pin 0-7500 6" None PDD00102
Rigid Stem 0.5% CE 6 Pin 0-10000 6" None PDD00103
Rigid Stem 0.5% CE 6 Pin 0-15000 6" None PDD00104
Flex Tube 0.5% CE 6 Pin 0-5000 6" 18" PDD00105
Flex Tube 0.5% CE 6 Pin 0-7500 6" 18" PDD00106
Flex Tube 0.5% CE 6 Pin 0-10000 6" 18" PDD00107
Flex Tube 0.5% CE 6 Pin 0-15000 6" 18" PDD00108
with T/C 0.5% CE 6 Pin 0-5000 6" 18" PDD00109
with T/C 0.5% CE 6 Pin 0-7500 6" 18" PDD00110
with T/C 0.5% CE 6 Pin 0-10000 6" 18" PDD00111
with T/C 0.5% CE 6 Pin 0-15000 6" 18" PDD00112

Additional Options:

Styles (consult Tempco for information if you require one of these products):
Exposed Capillary Transducer: for applications requiring a transducer capable of fitting into extremely tight places.
Plastic Melt Pressure Transmitter: 4-20 mA output, 12-36 Vdc input, available with or without thermocouple. FM approved model is also available; consult Tempco.

Connectors (consult Tempco for information if you require one of these options):
Gentran GT-76 compatible wiring: strain gauge connector is wired for compatibility with Gentran GT-76 connector.
Barber Coleman TD10 compatible wiring: strain gauge connector is wired for compatibility with Barber Coleman TD10 connector.
How To Order
Melt Pressure Transducers are offered with the options listed in the worksheet below. Create an ordering code by filling in the boxes with the appropriate number and/or letter designation for your requirements and a part number will be assigned.

Part Numbers for commonly used Melt Pressure Transducers can be found in the table above.

Standard lead time is stock to 3 weeks.