PT2X-BV Barometric Data Logger

  • Compensate absolute PT2X & CT2X data loggers
  • Choice of designs
  • Replaceable internal batteries
Product Options


The PT2X-BV barometric pressure data logger is built on the PT2X Pressure/Temperature Smart Sensor platform. It provides an ideal barometric reference for absolute versions of the PT2X water level and groundwater data logger.

Conversion of data files from an absolute sensor is made easy with use of the Aqua4Plus Barometric Compensation Utility means conversion of data files from absolute sensors is easy.

The barometric pressure data logger is capable of storing over 130,000 pressure, temperature and time data records. The sensor is powered internally with two AA batteries or can be powered with an external auxiliary power supply.

It is available in two versions:

  • Weatherproof Box
  • 316 stainless steel tube (with NPT option available)

The tubular version is available with a ¼" NPT end cone for pressure measurements in pipe applications or a standard end cone for submersible applications.

Aqua4Plus software provides flexible programming, extensive control, real time monitoring easy field calibration and a delayed start feature.

The barometric data loggers can be easily networked with other Smart Sensors with the RS485 interface.

Manufactured by: INW
Model: PT2X-BV Barometric Data Logger

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


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


General - Weatherproof Box
Enclosure Material ABS - IP66/67
Dimensions (box) 4.3" x 3.1" x 2.5"
(10.9 x 7.9 x 6.4 cm)
Dimensions (incl. connectors) 4.3" x 3.6" x 2.5"
(10.9 x 9.1 x 6.4 cm)
Wire Seal Metrials Fluorocarbon and Buna N
Desiccant High- and standard-capacity packs
General - Tube
Body Material Delrin® & 316 stainless steel
or titanium
Dimensions (cabled) 11.875" x 0.75" diameter
(30.2 cm x 1.9 cm)
Dimensions (cableless) 11.625" x 0.75" diameter
(29.5 cm x 1.9 cm)
Wire Seal Materials Viton® and PTFE/FEP
Desiccant High- and standard- capacity packs
Terminating Connector Available
Weight 0.80 lbs. (0.4 kg)
Submersible Cable Polyurethane, polyethylene, or FEP
Protection Rating IP68, NEMA 6P
Communication RS485 Modbus® RTU
SDI-12 (ver. 1.3)
Direct Modbus Read Output 32-bit IEEE floating point
SDI-12 Output ASCII
Internal Math 32 bit floating point
Operating Temp. Range3 -20° C to 60° C
Storage Temp. Range1 -40° C to 80° C
Memory 4MB - 520,000 records
Low Types Variable, user-defined,
logarithmic, profiled
Programmable Baud Rate 9600, 19200, 38400
Logging Rate 8x/sec maximum
Software Complimentary Aqua4Plus or
Networking 32 available addresses pre junction w/ batching capabilities (up to 255)
File Formats .xls / .cvs / .a4d
Internal Battery 2x1.5V AA alkaline2
Auxiliary Power 12VDC - Nominal
6 - 15VDC - Range
Exp. Alkaline Battery Life 18 months at 15m polling interval5
Element Type Digital IC on board
Accuracy ± 0.5° C
Resolution ± 0.1° C
Range -40° C to 80° C
Units Celsius, Fahrenheit, Kelvin
Transducer Type 16 PSIA (1102 mBar) silicon strain guage
Transducer Material 316 stainless steel or titanium
Units PSI, FtH2O, inH2O, cmH2O,
mmH2O, mH2O, inHg, cmHg,
mmHg, Bars, mBars, kPa
Static Accuracy ± 0.5% FSO (typical)
± 0.1% FSO (maximum)
(B.F.S.L. 20° C)
Resolution 0.0034% FS (typical)
Maximum Operating Pressure 1.1 x FS
Burst Pressure4 2.0 x FS
Compensated Range 0° C to 40° C
1 Storage without batteries
2 Lithium available upon request
3 Requires freeze protection kit if in water below freezing
4 Burst reduced at PSI>300
5 May vary due to environmental factors



The free app is available on both Apple® and Android™ smart devices.
Apple devices must be running iOS 11 or later on the following compatible devices:

  • iPhone
  • iPad
  • iPad mini
  • iPod touch.

Android devices must be running version 5.0 or higher. Solinst does not guarantee compatibility on all devices running 5.0, but testing confirms the following can be used:

  • Phone: Samsung Galaxy S4 - Model SGH-1337M
  • Phone: Samsung Galaxy S5 - Model SM-G900W8
  • Tablet: Samsung Tab 4 (10.1”) - Model SM-T530NU

As the Levelogger App Interface will not connect directly to the top of a Solinst datalogger, it is necessary to have connection accessories. With the Levelogger or Rainlogger, one of the following accessories is required:

  • Direct Read Cable, clients use this option to suspend dataloggers in the field when they wish to communicate downhole.
  • When working with Leveloggers that are suspended from wireline, or cord, the units must be removed from the well and connected to either a Direct Read Cable (as above) or an Optical Adaptor.
  • For the LevelVent, just connect to the unit via the Vented Cable and LevelVent Wellhead that all units are suspended from in the field – no other connection accessories are required.
  • The AquaVent communication connection is made from the App Interface to the AquaVent Wellhead using an App Connector Cable that is ordered separately.
The Levelogger App Interface is portable hardware that connects to the top of your Levelogger via a Direct Read Cable/Adaptor, to a LevelVent Wellhead, or to an AquaVent Wellhead cable. Bluetooth wireless technology allows communication between the Levelogger App Interface and the smart device with the app installed. It allows viewing/downloading of data, and programming of Solinst dataloggers, as well as many other features.
Solinst offers a wide range of dataloggers that can be used with the Leveloggger App Interface. They include the complete, current Levelogger Edge range of units (Edge, Junior Edge, LTC Edge, Rainlogger Edge), previous Gold Leveloggers/Barologgers, and the latest vented datalogger editions, the AquaVent and LevelVent.
  • Program and start dataloggers in the field.
  • Simplify data management in the field by transporting and using less equipment.
  • View real-time readings.
  • Download and e-mail logged data files.
  • Calibrate LTC Leveloggers (NEW).
  • Run the diagnostic utility (NEW) – used for troubleshooting

Leveloggers. Provides detailed information on the datalogger,
and includes options for running a self-test, doing a memory
dump and creating/emailing reports.

The most recent version of the Android App available is 1.2.5 but that is only available for download if your Android device has Android version 8 (oreo) or above. That means, any device running older Android versions can not download the most recent App-This is a restriction that Google has set.