ZET 7012-A VER.2 digital pressure meter

  • Integrated primary transducer
  • Explosion-proof version
  • RS-485 digital output
  • Option: 4-20 mA output

From 257 USD

* Minimum order value: from 7 700 USD


of ZET 7012-A VER.2 digital pressure meter

Metrological specifications
Measured value absolute pressure
Precision class 1
Upper measuring range limit 0,16 mPa
Lower measuring range limit 160 Pa
Sensitivity threshold (minimum difference value between two consequtively measured values) 1 Pa
0,1 mmHg
Absolute measuring tolerance (from the upper measuring range limit) 0,1 %
Relative measuring tolerance (from the measured value) 0,1 %
Additional measuring tolerance (depending on temperature changes) 0,1 %/ °10 C
Technical specifications
Refresh rate 1 Hz
Digital interface
Data interface RS-485
Data rate 4800, 9600, 14400, 19200, 38400, 57600, 115200 bit/s
Parity control 0 – no control; 1 – control (oddity, ODD)
Data communication protocol Modbus RTU
Analog interface*
Current signal 4-20 mA
Load resistance 0…250 Ohm
Operational parameters
Dimensions ∅34×190 mm
Weight 380 g
Device power  9 – 24 V
Power consumption 0,5 W
Polarity reversal protection yes
Operation temperature range from -40 up to +100 °C
Operational environment liquids and gases compatible with titanium alloys and stainless steels
Product versions Standard (protection IP68)
Explosion-proof* (explosion protection 1ExdIIAT6X, cable length – 4 m)
Pressure overload 1,5×Upper measured pressure range
Electromagnetic compatibility EMC
(IEC 61000-4-2), ESD contact 4 kV; air 8 kV
(IEC 61000-4-4), EFT power 0,5 kV; signal 0,25 kV
(IEC 61000-4-5), Surge 500 V


Application scope

of digital pressure meter ZET 7012-A VER.1

Digital pressure meter ZET 7012-A VER.2 is used in automated control systems and technological processes control systems in various industrial spheres.

The digital pressure meter is used for fast measuring of absolute pressure and transfer of the data obtained in digital format via interface RS-485 or 4-20 mA.

Explosion proof character

Explosion protection certificate № 0038579

ZET 7012-A VER.2 digital pressure meter meets Customs Union Technical Regulations “On the safety equipment for working in hazardous environments” TP TC 012/2011

Operating principle

of ZET 7012-A VER.2 digital pressure meter

Digital pressure meter ZET 7012-A VER.1 consists of primary transducer and integrated measuring module.

Primary transducer converts pressure values into analog signal. The measuring module converts the signal from the transducer into digital format and provides the pressure readings via RS-485 (Modbus protocol) or via “Current loop” interface (4-20 mA).  The membrane of the primary transducer is made of silicon plate. Strain gauge scheme (bridge circuit) is implemented via SOS-technology. This allows to perform instantaneous dynamic measurements up to 1 000 Hz. Unlike metal plates with fixed bridge strain gauges, SOS – membranes enable registering pressure fluctuations at the level of 0,000001 from the upper range limit. Sensitivity of electrical amplifier at the input is 15 nanovolt.

Digital pressure meter ZET 7012-A VER.1 has an integrated cable. Depending on the product version specfication, the pressure meters are delivered whether with contact output for the interface 4-20 mA, or for RS-485, or with a plug FQ14-7TJ-8 at the end of the cable for connection to the interface RS-485 (connection to the measuring network should be performed via ZET 7002 converter).

The pressure meters are mounted on the controlled object and interface modules providing data transfer are placed inside of electrical cabinets.

ZETLAB electrical cabinet has compact dimensions if compared to available analog products. Among  ZETSENSOR modules advantages one can mention easy mounting and de-installation as well as power indication and signal transfer, which makes it easy to perform in-place system diagnostics.

Digital pressure meters: contact layout

for connection to the interface 4-20 mA and RS-485

Wire color Mark Designation
Orange 1 +(9…24) V
Blue 2 RS-485 line «B» or«DATA -»
White-blue 3 RS-485 line«A» or«DATA +»
White-orange 4 GND
Brown 5  +
White-brown 6  –
Screen Cable screen

Digital pressure meters: contact marking

for connection to the interface RS-485

Connectors for connecting sensors

Contact number Connection to the measuring network
1 +(9…24) V
2 RS-485 line «DATA -» (IN)
3 RS-485 line «DATA +» (IN)
5 not used
6 RS-485 line «DATA -» (OUT)
7 RS-485 line «DATA +» (OUT)

Measuring network scheme

based on digital pressure meter ZET 7012-A VER.1

Using digital pressure meters is especially convenient when establishing distributed measuring networks. Unlike normally used centralized measuring networks, there is no need to use “star-type” conection, which allows to  reduce overall cable length. Since the data is transmitted in digital format, the are less requirements for data transfer channel, besides, one can use inexpensive cables for the network establishing.

In order to connect the measuring network to ZETLAB and ZETVIEW systems, one can use interface converter ZET 7070 (USB ↔ RS-485) or ZET 7076 (Ethernet ↔ RS-485). Using inner power supply module ZET 7070, one can connect up to 4 digital pressure meters to a single ZET 7070 module (and up to 60 digital pressure meters if using external power supply module).

Scheme of measuring network 7XXX-RS-485

ZETLAB Software enables connection of up to 1024 sensors to one PC. Measuring networks can also be connected to any system using Modbus protocol via interface RS-485.

Basic configuration

Digital pressure meter ZET 7012-A VER.1

Basic configuration of the digital sensor

Basic configuration of digital pressure meter includes:

  • Digital pressure meter ZET 7012-A VER.1;
  • coupling unit of measuring line  ZET 7002;
  • plug for the cable FQ14-4TJ-7;
  • spring connection pipe for 7 mm;
  • paronite gasket;
  • set of operational documentation.

From 257 USD

* Minimum order value: from 7 700 USD

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Necessary measuring products

supplied upon request

Interface converter ZET 7076 Ethernet Wi-Fi RS-485
Intrerface converter ZET 7076
Ethernet connection