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The Seametrics PT2X-BV is a special version of the PT2X designed to measure barometric and vacuum pressure in reference to absolute pressure, along with temperature and time. It will measure pressure/ vacuum from 600 to 1100 millibars.

Pressure measurement is accomplished utilizing an extremely rugged and stable 15 PSIA piezo-electric media-isolated pressure element combined with a 16-bit analog-to-digital converter. 

This provides extremely accurate and stable pressure input into the microprocessor on the circuit board that measures the pressure, stores the data in non-volatile memory, and communicates the information via a serial communication link (RS485) to the host computer. 

Temperature measurement is accomplished utilizing a temperature sensor chip. The PT2X-BV is available in two enclosures – either an ABS weather-proof box or a stainless steel tube. The tube version is available with either a solid end cone or an NPT end cone for connecting to piping. The PT2X-BV can be networked with other Seametrics Smart Sensors and controlled directly from a single computer. 

While most will use the PT2X-BV with our Aqua4Plus 2.0 software, it is by no means limited to that software. You can use your own Modbus® RTU or SDI-12 software or logging equipment to read measurements, thus tying into your existing telemetry and control systems.
Features
  • Provides barometric compensation for PT2X sensors with free Aqua4Plus software
  • Stores over 520,000 records of pressure, temperature, and time data
  • Includes RS485 interface for easy networking
  • Available in a weatherproof box or 316 stainless steel tube (NPT optional)

Specifications

Body Material

  • ABS - IP66/67

Dimensions

  • Box: 4.3” x 3.1” x 2.5” (10.9 x 7.9 x 6.4 cm) Box and connectors: 4.3” x 3.6” x 2.5” (10.9 x 9.1 x 6.4 cm)

Wire Seal Material

  • Fluoropolymer and Buna N

Weight

  • 0.8 lb (0.4 kg)

Cable

  • Submersible: polyurethane, polyethylene, or ETFE (4 lb/100 ft., 1.8 kg/30 m)

Environmental

  • IP68, NEMA 6P

Field Connector

  • Standard

Operating Range

  • Recommended: -15° to 55° C (5° to 131° F)

Storage Range

  • Without batteries: -40° to 80° C (-40° to 176° F)

Internal Battery

  • Two lithium ‘AA’ batteries - Expected battery life: 18 months at 15 min. polling interval (may vary do to environmental factors)

Auxiliary

  • 12 Vdc - Nominal, 9-15 Vdc - range

Modbus®

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

SDI-12

  • SDI-12 (ver. 1.3) - ASCII

Memory

  • 4MB - 520,000 records

Logging Types

  • Variable, user-defined, profiled

Logging Rates

  • 8x/sec maximum, no minimum

Baud Rates

  • 9600, 19200, 38400

Software

  • Complimentary Aqua4Plus 2.0

Networking

  • 32 available addresses per junction (Address range: 1 to 255)

File Formats

  • .a4d and .csv

Element

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

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

  • 0.1° C
  • 0.0034 % Full Scale (typical)

Units

  • Celsius, Fahrenheit, Kelvin
  • psi, FtH₂O, inH₂O, mmH₂O, mH₂O, inH₂O, cmHg, mmHg, Bars, Bars, kPa

Range

  • -40° to 80° C (-40° to 176° F)
  • 600 to 1100 millibars

Compensated

  • 0° to 40° C (32° to 104° F)

Max operating pressure

  • 1.1 x Full Scale

Burst pressure

  • 2.0 x Full Scale

Documentation

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