Pressure And Level Sensors Type PT12-BV Seametrics

PT12-BV Seametrics

Barometric & Vacuum with Modbus & SDI-12 Interface

Available as a weatherproof box or 316 stainless steel tube (titanium optional).
Provides barometric reference for absolute pressure sensors.
Automatically compensates for barometric pressure when attached to a PT12 submersible sensor (SDI-12 only).
Measures pressure and temperature.

Description

The PT12-BV barometric pressure sensor comes as a weatherproof box and provides an ideal barometric reference for absolute pressure sensors.

It also offers automatic barometric compensation when used with SDI-12. Simply attach the PT12-BV to a PT12 submersible sensor and receive barometrically compensated pressure readings. No post-processing of data. No vented cable. No desiccant tubes.

Featuring both an SDI12 (v.1.3) interface and a Modbus® RTU interface, the PT12-BV is easy to connect to recorders and existing monitoring networks, making it the preferred choice for many environmental professionals.

Features

Pressure And Level Sensors Type PT12-BV Seametrics

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.

Applications

Level measurement: barometrically compensate absolute pressure sensors.
Measure vacuum pressure during vapor extraction pilot testing.
Supplement aquifer test data in leaky or confined conditions.
Accurately measure barometric pressure.

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.

SPECIFICATION

Housing	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
Temperature	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)
Power	Voltage	9-16Vdc, 24Vdc over voltage protection, electromagnetic & transient protection IEC-61000 – 4-3, 4-4, 4-5, 4-6
	Supply Current	Active 3mA average/ 10mA peak; sleep 150 ?A
Communication	Modbus®	RS485 Modbus® RTU, output=32bit IEEE floating point
	SDI-12	SDI-12 (ver. 1.3) – ASCII
Output Channels		Temperature	Pressure/Vacuum
	Element	Digital IC on board	Silicon strain gauge transducer, 316 stainless
	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% FS (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

*Specifications subject to change. Please consult out web site for the most current data (seametrics.com). Modbus is a registered trademark of Schneider Electric.

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