HOME » PRODUCTS » Special Products » Sensors » t019 TEVAP-ZM


Meteorology and Hydrology

Data Acquisition Systems

Water Quality

Software Application

Special Products



TEVAP-ZM is a A Class evaporimeter specifically designed to be compliant with WMO standards, and it represents one of the most useful sensor in agrometeorology to investigate the level of evapotranspiration in a specific area. Basically, TEVAP-ZM is composed of a sturdy stainless steel pan, in which a piezometer is submerged, measuring the variation of water level in the pan due to external environmental conditions. A wood thank placed at the bottom of the pan allows to isolate the evaporimeter from the ground, in such a way as to avoid that the measurement might be affected by the transmission of soil heat and moisture. The whole system is very performant, ensuring high standards of accuracy and resolution also for little variations of water level. The sensing element indeed has been thoroughly designed to detect really small changes in the measurement.
It is composed of a ceramic cell, and the output value of pressure is given by a polynomial compensation of the atmospheric pressure. The sensor is equipped with digital output on serial RS485 port, and analog output as well (on current 4-20 mA).
TEVAP-ZM is supplied with power and signal cable (12 m).
Range 0 ÷ 30 mBar
Typical error ± 0,15 % f.s.
Transducer Ceramic measuring cell
Working temperature -20 ÷ 80 °C
Output 4÷20 mA and RS485-Modbus

  Specifica Tecnica


10 May 2022 Baptism of the sea for the new buoy of the Italian national wave network (RON)

The new RON buoy during a Bora storm Less than a month after the launch of the eighth buoy of the National Wave Network, a strong Bora (the Adriatic n...

Read more »
11 April 2022 Siap+Micros in support of a new scientific project of ‚Äč‚ÄčIspra and Ismar-CNR

The new buoy and the CNR platform The update of the national wave network (RON) which, in 2020, was only a project (we had written about it in a previ...

Read more »
6 April 2022 Partnership with Teconer Oy for road safety

Optical surface sensor Siap+Micros has signed an agreement with Teconer Oy (Finland) aimed to integrate the proven technologies of non contact road su...

Read more »