Tel-Tru Differential Pressure Transmitter, P521
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P521 Differential Pressure Transmitter

Brand: Tel-Tru Manufacturing Co.
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Every P521 is built using advanced manufacturing techniques to ensure symmetry between the HI and LO ports.

Symmetry, along with automated welding procedures and extreme environmental burn-in give Tel-Tru's differential pressure products excellent performance and reliability over time and at high elevated line pressure.

The P521 pressure ports all welded 316L Stainless Steel ‘O’-Ring free design make it ideal for high cyclical applications, capillary filled systems, or applications where a guaranteed leak free system is needed.

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Specifications

Brand

Accuracy

  • ± 0.25 % of Full Scale Output
  • Static Accuracy: ± 0.5 % of Full Scale Output (BFSL, RSS) Combined Effects of Non-Linearity, Hysteresis & Repeatability,

Applications

  • Hydraulic Applications
  • Laboratory & Test Equipment
  • Marine & Offshore Applications
  • Petrochemical
  • Pneumatics
  • Pump & Compressors

Approvals & Certifications

  • CE EN 50081-2, EN 50082-2

Burst Pressure

  • Minimum psi: 5,000 to 12,000 (kPa: 34,470 to 82,740, bar: 344.7 to 827.4)

Communication

  • HART

Compensated Temperature

  • -17.8° to 76.7° C (0° to 170° F)

Electrical Connectors

  • 1/2” NPT Male Conduit Connection with 2 to 50 feet Wire Pigtail
  • 6-Pin Bendix
  • Mini DIN 43650C Connector with Mate
  • NEMA 4X Cable Exit [24” (610 mm) Cable]
  • Pigtail Connector (2, 5, 10, 20, 30, 50 feet Wire)

Electrical Protection

  • Short Circuit Protected: up to 40 Vdc - P521A, P521B

Environmental Protection

  • IP66
  • NEMA 4X

Excitation Voltage

  • 16-38 Vdc - P521K
  • 2-15 Vdc - P521C
  • 8-38 Vdc - P521A, P521B

Flange Material

  • Process Flange: 316L Stainless Steel

Insulation Resistance

  • 1,000 megaohms at 50 Vdc

Line Pressure

  • psi: 1,000 to 10,000 (kPa: 6,895 to 68,950, bar: 68.95 to 689.5)

Materials of Construction

  • Non-Wetted Part: 316L Stainless Steel & Electrical Connector

NACE & NIST

  • NACE
  • NIST Traceable Calibration Certificate

NPT Connection

  • 1/4” NPT Female
  • 1/4” NPT Male
  • 1/8” NPT Female

Operating Temperature

  • -40° to 93° C (-40° to 200° F)

Output

  • 0-10 Vdc - P521K
  • 0-5 Vdc, 3-Wire - P521B
  • 1-2 mV/V (4-Wire) - P521C
  • 4-20 mA, 2-Wire - P521A

Power Supply Effect

  • ± 0.002 % of Full Scale Output Per V Input - P521A, P521B

Pressure Range

  • bar: 0 to 344.7
  • kPa: 0 to 34,470
  • psi: 0 to 5,000

Pressure Type

  • Differential (Uni-Directional, Bi-Directional)

Proof Pressure

  • 5 times Full Scale Either Side [psi: 10,000 (kPa: 68,950, bar: 689.5)]

Repeatability

  • ± 0.1 % of Full Scale Output

Resolution

  • Infinite (± 0.001 % of Full Scale Output Usable)

Response Time

  • < 1 millisecond - P521C
  • < 5 milliseconds - P521A, P521B

Reverse Polarity Protection

  • Yes

RFI/EMI Protection

  • Internal Filtering - P521A, P521B

Stability

  • Long Term Stability: ± 0.25 % of Full Scale Output Per Year

Static Pressure Effect

  • Range A: ± 1.5 % of Full Scale Output Per psi: 1,000 (kPa: 6,895, bar: 68.95)
  • Range B: ± 1 % of Full Scale Output Per psi: 2,000 (kPa: 13,790, bar: 137.9)
  • Range C: ± 1 % of Full Scale Output Per psi: 5,000 (kPa: 34,470, bar: 344.7)

Storage Temperature

  • -40° to 121° C (-40° to 250° F)

Temperature Effect

  • ± 1.5 % of Full Scale Output over Compensated Range [Combined Effects of Zero & Full Scale Output with Reference at 21° C (70° F)]

Update Time

  • Warm-Up: < 10 milliseconds

Wetted Materials

  • 316L Stainless Steel
  • Hastelloy C-276
  • Inconel

Zero Balance

  • ± 1 % of Full Scale Output

Documentation

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