ZET 7123 digital meteorological sensor

  • Humidity, pressure and temperature measurements
  • CAN 2.0 interface
  • Ready for operation

POR (price on request)

* Minimum order value: from 7 700 USD


of ZET 7123 digital meteorological sensor

Meteorological data
Measured physical values relative humidity
atmospheric pressure
Relative humidity measurement range from 0 up to 100 %
Absolute tolerance of relative humidity measuremnts ±3 % in the range 0…80
±5 % in the range 80…100
Atmospheric pressure measurement range from 50 up to 115 kPa
Pressure measurement units kPa, bar, atm, mm Hg, kgf/cm2, psi
Atmospheric pressure measurement absolute error ±1 kPa
Temperature measurement range from -40 up to +85 °C
Temperature measurement units °C, °F
Absolute tolerance of pressure measurements ±0,4 °C in the range -10…+85 °C,
±1 °C in the range -40…-10 °C
Operability control in real-time mode synchronization quality
data quality
Measurement reliability control sensing element integrity control
Technical specifications
Data refresh rate 1 Hz
Data transfer interface CAN 2.0
Exchange speed 100, 300, 1000 kb/sec
Operational specifications
Dimensions 71×39×17 mm
Weight 35 g
Device power from 9 up to 24 V
Consumed power 0,4 W
Reverse polarity protection yes
Operational temperature range from -40 to +85 °C
Electromagnetic compatibility, EMC
IEC 61000-4-2, ESD contact 4 kV, air 8 kV
IEC 61000-4-4, EFT power supply 0,5 kV, signal 0,25 kV
IEC 61000-4-5, Surge 500 V
  • Available product versions

    Standard: laboratory design in plactic package (green color).
    Industrial*: standard design module placed inside of leak-proof package (transparent cover)


of ZET 7123 digital meteorological sensor

No adjustment required

The characteristics are saved in the measuring module memory

Measurement results

Measurements results are represented in digital form

Compact dimensions

Compact multi-functional meteorological station


Stable characteristics and high reliability throughout operational period

Directive 2011/65/EU (ROHS, ROHS II)



Operating principles

of ZET 7123 meteorological sensor

Digital meteorological sensor ZET 7123 is a measuring unit with two in-built sensors, one of which is used for measuring relative humidity and temperature, and the other one – for atmospheric pressure measuring.

ZET 7123 meteorological sensor measuring unit converts signal from the sensing elements to temperature, humidity, and pressure values. The obtained values are transmitted via CAN  interface and displayed in the measurement units set by the user.

The sensors are fixed on the controlled object while the interface units ensuring information transmission are placed inside of electrical cabinet.

ZETSENSOR elecrical cabinet is more compact than available analog versions. ZETSENSOR digital modules are easy to install and de-install, they also have power supply and data transfer digital indication, which makes it easy to perform in-place diagnostics of the system.

Measurement results

of ZET 7123 digital meteorological sensors

Connection diagrams

of ZET 7123 digital meteorological sensor

Connection to a PC can be performed via USB, Ethernet, Wi-Fi, GSM or a radio channel (see the Clause “Interface converters”). The interface converters delivery package includes ZETLAB software.

Since the signal is processed right at the measurement point, it considerably increases the measurement accuracy, besides, it is possible to use less expensive cable for signal transmission.

Metrological self-monitoring

of ZET 7123 digital meteorological sensor

Digital meteorological sensor ZET 7123 have metrological diagnostic self-monitoring function — in particular, auto-check of sensor serviceability while being in operation. Based on positive results of metrological self-monitoring, it is possible to increase inter-verification interval without standard verification procedure.

There has been developed a special software for metrological self-monitoring of ZETSENSOR digital transducers in automatic mode.

Main window of “Metrological self-monitoring ZET 7XXX” software is shown in the figure. The “Metrological self-monitoring” tab allows user to select the type of device, test, control measurements routine, and to receive the self-monitor results.

Metrological self-control

Test impact types

AC - alternating signal

FR: «Required frequency value»: «Frequency tolerance» – alternating signal frequency;

AM: «Required signal amplitude value»: «Signal amplitude tolerance» – alternating signal amplitude;

OF: «Generated signal bias»: «Generated signal bias tolerance» – generated signal bias;

TM: «Signal analysis time» – signal control time (minimal signal analysis time for transient processes or long-time tests)

Alternating signal with frequency: 0.5 ± 0.01 Hz, amplitude: 0.4 ± 0.002 V, bias: 0.1 ± 0.0001 V, minimal signal control time – 5 s.

DC - constant signal

LE: «Required signal level»: «Signal level tolerance» – generated signal level.

TM: «Signal analysis time» – control signal time (signal analysis minimal time for transient and long-time processes tests)

constant signal: 0.5 ± 0.001 V, minimal signal control time – 5 s.

ST1 - stepwise change

AM: «Minimal value»: «Maximum value» – change range.

TM: «Signal setting time» – time before signal control start

stepwise change: for 100..200 units, minimal signal control time – 5 s.

ST2 - stepwise change

MD: «Minimal change»: «Maximum change» – change amplitude.

TM: «Signal setting time» – time before signal control start

stepwise change: for 10..10.5 units in modulus, minimal signal control time – 6 s.

PPS - Pulse-per-second signal

SP: «Acceptable counts deviation» – amount of counts before or after start of a second.

Level change to be checked one time in a second.

PPS;SP:2 –
the change should take place in the beginning of a second, 2 counts.

Device type is selected from the dropdown list. To select the device type you have to left-click the element, and to select the required device to be checked from the pop-up list.

Selector is used to choose the test. To change test number you have to left-click the number and to set the required value with the scroll wheel. If self-check is run, selector remains inactive till the moment the user stops the project operation or till the self-check procedure is finished.
There is a button to activate and stop the measurements. During diagnostics the button is green, and grey when stopped.

Indicator serves as a timer showing how much time is left before the current test is finished. It takes the count after any test is begun. Test results are shown in the log.

Basic configuration

of ZET 7123 digital meteorological sensor

Basic configuration of a meteorological sensor

Digital meteorological sensor ZET 7123 delivery scope includes:

  • ZET 7123 digital meteorological sensor;
  • DIN-rail mounting panel for plastic modules 71×39 mm;
  • set of operational documentation.

Necessary measuring products

supplied upon request

ZET 7176
ZET 7176 interface converter
Ethernet Connection

ZET 7173
ZET 7173 off-line recorder
Off-line operation mode

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