Advantages

The PT12 can transform your analog sensors into a digital sensor system. Easy to connect with SDI-12 recorders— convenient for an existing SDI-12 system plus a Modbus® RTU communication interface for further flexibility. Delivers great noise immunity, thermal performance, and transient protection.

Designed for rugged conditions, the PT12 delivers accurate pressure and temperature
SDI-12 v1.3 interface
Modbus® RTU interface
Optional U.S.G.S. OSW accuracy enhanced calibration on the 15 PSIG unit.

Monitoring groundwater, well, tank and tidal levels
Pump testing
Flow monitoring

Specifications

Housing & Cable

Weight

0.8 lb. (0.4 kg)

Body Material

316 stainless or titanium

Wire Seal Material

Fluoropolymer and PTFE

Cable

Submersible: polyurethane, polyethylene, or ETFE; 4 lb./100 ft., 1.8 kg/30 m; 2000 ft max for Modbus®

Desiccant

1-3 mm indicating silica gel

Field Connector

Available as an option

Temperature

Operating Range

Recommended: -15 ̊ to 55 C̊ (5 ̊ to 131 ̊F) Requires freeze protection kit if using pressure option in water below freezing.

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 μA

Communication

Modbus®

RS485 Modbus® RTU, output=32bit IEEE floating point

SDI-12

SDI-12 (ver. 1.3) – ASCII

Output Channels

Temperature

Depth/Level¹

Element

Digital IC on board

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

0.06°C

0.0034% FS (typical)

Ranges

-15° to 55°C (5° to 131°F)

Gauge

PSI: 1², 5, 15, 30, 50, 100, 300
FtH₂O: 2.3², 12, 35, 69, 115, 231, 692
mH₂O: 0.7², 3.5, 10.5, 21, 35, 70, 210

Absolute³

PSI: 30, 50, 100, 300
FtH₂O: 35, 81, 196, 658
mH₂O: 10, 24, 59, 200

Compensated

0° to 40°C (32° to 104°F)

Max operating pressure

1.1 x full scale

Over pressure protection

3x full scale up to 300psi – for > 300psi (650 ft or 200 m) contact factory

Burst pressure

1000 psi (approx. 2000 ft or 600 m)

Environmental

IP68, NEMA 6P

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

¹ Higher pressure ranges available upon request

² ±0.25% accuracy FSO (max) at this range

³ Depth range for absolute sensors has 14.7 PSI subtracted to give actual depth allowed

PT12 Pressure & Temperature

Specifications

Housing & Cable

Weight

0.8 lb. (0.4 kg)

Body Material

316 stainless or titanium

Wire Seal Material

Fluoropolymer and PTFE

Cable

Submersible: polyurethane, polyethylene, or ETFE; 4 lb./100 ft., 1.8 kg/30 m; 2000 ft max for Modbus®

Desiccant

1-3 mm indicating silica gel

Field Connector

Available as an option

Temperature

Operating Range

Recommended: -15 ̊ to 55 C̊ (5 ̊ to 131 ̊F) Requires freeze protection kit if using pressure option in water below freezing.

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 μA

Communication

Modbus®

RS485 Modbus® RTU, output=32bit IEEE floating point

SDI-12

SDI-12 (ver. 1.3) – ASCII

Output Channels

Temperature

Depth/Level¹

Element

Digital IC on board

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

0.06°C

0.0034% FS (typical)

Ranges

-15° to 55°C (5° to 131°F)

Gauge

PSI: 1², 5, 15, 30, 50, 100, 300
FtH₂O: 2.3², 12, 35, 69, 115, 231, 692
mH₂O: 0.7², 3.5, 10.5, 21, 35, 70, 210

Absolute³

PSI: 30, 50, 100, 300
FtH₂O: 35, 81, 196, 658
mH₂O: 10, 24, 59, 200

Compensated

0° to 40°C (32° to 104°F)

Max operating pressure

1.1 x full scale

Over pressure protection

3x full scale up to 300psi – for > 300psi (650 ft or 200 m) contact factory

Burst pressure

1000 psi (approx. 2000 ft or 600 m)

Environmental

IP68, NEMA 6P

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

¹ Higher pressure ranges available upon request

² ±0.25% accuracy FSO (max) at this range

³ Depth range for absolute sensors has 14.7 PSI subtracted to give actual depth allowed

Resources

Video

Manuals & Downloads

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PT12 Pressure & Temperature

Advantages