TEROS 32 Tech Specs
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Technical Specifications

Measurement Specifications
Water potential
Range: -85.0000 – 50.0000 kPa
Resolution: 0.0012 kPa
Accuracy: ±0.1500 kPa
Range: -30 – 60 °C
Resolution: ±0 °C
Accuracy: ±0.1 °C between -20 and +40 °C (±1 °C outside of this range)
Communication Specifications
DDI serial
SDI-12 communication protocol
Data Logger Compatibility
METER ZL6 and EM60 data loggers or any data acquisition system capable of 3.6- to 28.0-VDC power and SDI-12.

NOTE: For a non-METER data logger, a barometric reference sensor, either standalone or as part of a data logger, is needed as part of the system configuration to accurately measure soil water potential.
Physical Specifications
Length: 40.0 cm (15.75 in)
80.0 cm (31.50 in)
120.0 cm (47.24 in)
Diameter: 2.5000 cm (0.98 in)
Ceramic: Al2O3 , bubble point 1,500 kPa
Shaft: PMMA
Corpus: POM GF
Refilling tubes: Stainless steel
Installation angle
10° to 80° from horizontal (downward)
–10° to –80° from horizontal (upward)
Operating temperature
Minimum: -30 °C (0 °C for water-filled tensiometer)
Maximum: 50 °C
Cable Length
5 m (standard)
75 m (maximum custom cable length)

NOTE: Contact Customer Support if a nonstandard cable length is needed.
Connector Types
3.5-mm stereo plug connector or stripped and tinned wires
BARO Module
When using the METER tensiometers TEROS 31 and TEROS 32 in combination with a non-METER data logger, a highly accurate barometric compensation is needed to get the most precise soil water potential measurement. The BARO Module can be used as a stand-alone sensor for measuring atmospheric pressure at a measuring site. It is also available with different connectors, so the BARO Module can be connected directly in between a tensiometer and a data logger. BARO Module can also act as a digital/analog converter to connect a tensiometer with serial output to a data logger with analog input channels. The logger obtains a barometric compensated analog matric potential signal. The BARO Module can be used for varied logger communications: SDI-12, Modbus, tensioLINK, analog voltage signal.
Manufactured under ISO 9001:2015
EM ISO/IEC 17050:2010 (CE Mark)