Seametrics PT2X-BV Barometric and Vacum Sensor With Datalogging

Seametrics PT2X-BV

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 by 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.

Feature

• Measures & records barometric pressure/vacuum and temperature
• Low power
• Modbus® RTU (RS485) and SDI-12
• ±0.05% FSO typical accuracy
• Thermally compensated
• Small diameter — 0.75” (1.9 cm)
• 520,000 records in non-volatile memory
• Barometric compensation utility for use with absolute sensors
• Free, easy-to-use, newly upgraded Aqua4Plus 2.0 software

APPLICATIONS

• Barometrically compensate absolute
  sensors for level measurement
• Measure vacuum pressure during
  vapor extraction pilot testing
• Supplement aquifer test data in
  leaky or confined conditions

Specifications

Box Enclosure	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
Tube & Cable	Body Material	Acetal & 316 stainless or titanium
	Storage Range	Without batteries: -40 ̊ to 80 ̊C (-40 ̊ to 176 ̊F)
	Dimensions	Cabled: 12.18” x 0.75” diameter (30.9 cm x 1.9 cm) Cableless: 11.93” x 0.75” diameter (30.3 cm x 1.9 cm)
	Wire Seal Material	Fluoropolymer and PTFE
	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
Temperature	Operating Range	Recommended: -15 ̊ to 55 ̊C (5 ̊ to 131 ̊F)
	Storage Range	Without batteries: -40 ̊ to 80 ̊C (-40 ̊ to 176 ̊F)
Power	Internal Battery	Two replaceable lithium ‘AA’ batteries – Battery life: 18 months at 15 min. polling interval (may vary do to environmental factors)
	Auxiliary	12 Vdc – Nominal, 9-15 Vdc – range
Communication	Modbus®	RS485 Modbus® RTU, output=32bit IEEE floating point
	SDI-12	SDI-12 (ver. 1.3) – ASCII
Logging	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
Output Channels		Temperature	Depth/Level
	Element	Digital IC onboard	Silicon strain gauge transducer, 316 stainless 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% FS (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