PT420A Series

The PT420A Series transducer is a +/- 0.25% sensor ideal for melt pressure applications requiring high accuracy, simple installation, repeatability and reliability. The PT420A transducers provide the industry standard 3.33 mV/V signal designed to work with most pressure indicators. The PT420A comes equipped with an eight pin Bendix connector. Optional thermocouple or RTD configurations are available to provide melt temperature. The PT420A features a 1/2-20 UNF thread for installation in standard transducer mounting holes and can be supplied with a variety of other electrical connections if desired.

PERFORMANCE CHARACTERISTICS

• Output: 3.33 mV/V +/- 2.0%
• Input Voltage: 10 Vdc recommended, 12 Vdc maximum
• Combined Error: +/- 0.25% FSO, (Including Linearity, Repeatability & Hysteresis) +/- 0.5% FSO for 500, 750, 1,000 psi ranges
• Repeatability: +/- 0.1%FSO, +/- 0.2% FSO for 500, 750, 1,000 psi ranges
• Configuration: Four-arm bonded foil Wheatstone bridge strain gage
• Bridge Resistance: Input: 345 Ohms minimum, Output: 350 Ohms +/- 10%
• Over Pressure: 2 X FSO or 35,000 psi whichever is less
• Zero Balance: +/- 5% FSO
• Internal Shunt Calibration (R-Cal): 80% FSO +/- 0.5%
• Insulation Resistance: 1000 megohms @ 50 Vdc

TEMPERATURE & MECHANICAL CHARACTERISTICS

• Max Diaphragm Temperature: 750oF (400oC)
• Zero Shift (due to temperature change): 15 psi/100oF Typical (27 psi/100oC)
• Electronics Operating Temperature: 250oF (121oC)
• Zero Shift Due to Temperature Change: +/- 0.01% FS/oF max (+/- 0.02% FS/oC max)
• Sensitivity Shift Due to Temperature Change: +/- 0.005% FS/oF max (+/- 0.01% FS/oC max)
• Mounting Torque: 500 inch/lbs. maximum
• Standard Wetted Parts: Dymax® coated 15-5 PH SST