High Accuracy Melt Pressure Transducers - Discontinued

Descrição

OMEGA is proud to feature state-of- the-art melt pressure transducers for general purpose and precision requirements. We also offer digital indicator/controllers, thermocouples, accessory cables, and connectors for plastic extrusion. Our transducers have been selected for applications with abrasive, non-abrasive, corrosive, or non-corrosive material. They offer a choice of 1% or 0.5% accuracy, and they feature stainless steel barrels in 3 lengths to meet the space requirements imposed by complex machinery, piping, and insulation.

Models 330, 335, 340, 341, 370, 371
Offered in 88.9, 152.4, and 304.8 mm (3½, 6, and 12") barrel lengths, these transducers feature a 17-4 PH stainless steel diaphragm for melt pressure usage with non-corrosive and non-abrasive materials; ±1% FS non-linearity (models 330, 340, 341) for general purpose applications; ±0.5% FS non-linearity (models 335, 370, 371) for high accuracy; and a -17.7 to 399°C (0 to 750°F) operating range.

Models 350, 351, 380, 381 are offered in 6" and 12" units with Hastelloy C-276 diaphragm for melt pressure usage with corrosive materials such as PTFE, Kynar® and fluorocarbon polymers. These transducers also feature ±1% FS non-linearity (models 350, 351) for general purpose applications; ±0.5% FS non-linearity (models 380, 381) for high accuracy; and a -17.7 to 399°C (0 to 750°F) operating range.

Models 360, 361, 390, 391
Offered in 152.4 and 304.8 mm (6 and 12") units with hard chrome plate diaphragm for melt pressure usage with abrasive materials such as fiberglass, aluminum, and cereal. These transducers also feature ±1% FS non-linearity (models 360, 361) for general purpose applications; ±0.5% FS non-linearity (models 390, 391) for high accuracy; and a -17.7 to 399°C (0 to 750°F) operating range. Built-In Thermocouples. Models with OMEGA's Type J (Iron-Constantan) or K (CHROMEGA™-ALOMEGA™) high accuracy thermocouples enable simultaneous temperature/pressure measurements up to 399°C (750°F). These transducers are designed for applications in which precision control is critical and where space for only one sensor is available.

SPECIFICATIONS
Accuracy: ±:0.5% or ±:1.0% FS
Repeatability: Within ±:0.1% FS maximum
Resolution: Infinite
Overload Pressure: 150% of rated range, no damage
Sensor Type: Bonded strain gage, 4-leg Wheatstone bridge
Bridge Resistance: 350 Ω ±5.0%
Sensitivity: 3.0 mV/V nominal
Zero Balance: ±10.0%
Excitation: 5 to 12 Vdc or Vac (rms), 15 V max
External Shunt Calibration Resistor: Standard feature (also available to be Dynisco compatible)
Insulation Resistance: 100 MΩ @ 50 Vdc
Thermocouple:Types J and K available as indicated
TEMPERATURE CHARACTERISTICS
Diaphragm: -18 to 400°C (0 to 750°F)
Electrical Connector: -18 to 121°C (0 to 250°F)
Zero Drift: ±0.01% FS/°:F ±0.02% FS/°C
Sensitivity-Drift: ±0.01% FS/°F (±0.02% FS/°C)
MECHANICAL CHARACTERISTICS
Diaphragm Material: Standard 17-4 PH stainless steel. Other choices include hard chrome plate, Hastelloy C-276.
Pressure Fitting: 1/2-20 UNF-2A
Mounting Torque: 10 foot-pounds min 20 foot-pounds max
Electrical Connector: WK6-325
Mating Connector: WK6-21C-1/4 (not included)
Weight:
   3½" = 145 g (0.32 lb)
   6" = 309 g (0.68 lb)
   12" = 560 g (1.23 lb)

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