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The Seametrics PT12-BV comes as a weatherproof stand-alone box or with an automatic compensation wiring option. The PT12-BV measures pressure, temperature, and supply voltage. 

The weatherproof box is an ideal barometric reference for absolute pressure sensors. This version features both an SDI-12 interface and a Modbus® RTU interface that makes the product easy to connect to recorders and operates on low power.

This makes it a preferred choice for many environmental professionals with existing SDI-12 or Modbus® RTU systems. 

With the Compensation Wiring Option , the PT12-BV automatically provides barometric compensation for a single attached absolute PT12 submersible pressure sensor. 

No post processing of data. No need to use a vented cable or worry about maintaining desiccant tubes. This version features an SDI-12 communication interface, making it ideal for many existing environmental systems.
Features
  • Weatherproof box constructed with ABS – IP66/67, fluorocarbon, and Buna N (nitrile rubber)
  • SDI-12 v1.3 interface
  • Modbus® RTU interface
  • Barometrically compensate attached absolute sensor for level measurement (SDI-12 only)
  • Operates on low power

Specifications

Material

  • Weatherproof box - ABS - IP66/67

Dimensions

  • Box only: 4.3” x 3.1” x 2.5” (10.9 x 7.9 x 6.4 cm)

Wire Seal Material

  • Fluorocarbon and Buna N

Communication Pigtail

  • 5 ft (1.5 m) polyurethane cable

Options

  • PT12-BV compensation wiring option; Bulkhead connector

Operating Range

  • Recommended: -15° to 55° C (5° to 131° F) Not designed to operate under water

Storage Range

  • -40° to 80° C (-40° to 176° F)

Voltage

  • 9-15 Vdc, electromagnetic & transient protection IEC-61000 - 4-3, 4-4, 4-5, 4-6

Supply Current

  • Active 3 mA average/ 10 mA peak; sleep 150 µA

Modbus®

  • RS-485 Modbus® RTU, output=32bit IEEE floating point

SDI-12

  • SDI-12 (ver. 1.3) - ASCII

Element

  • Digital IC on board
  • Silicon Strain Gauge Transducer, 316 Stainless Steel

Accuracy

  • ± 0.5° C — 0° to 55° C (32° to 131° F) ± 2.0° C — below 0° C (32° F)
  • ± 0.05 % FSO (typical, static) ± 0.1 % FSO (maximum, static) (B.F.S.L. 20° C)

Resolution

  • 0.06° C
  • 0.0034 % Full Scale (typical)

Range

  • -15° to 55° C (5° to 131° F)
  • 0-16 psia (110 kpa)

Compensated

  • 0° to 40° C (32° to 104° F)

Over pressure protection

  • 2x

Environmental

  • IP66/67

Documentation

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