ZET 7012-A VER.2 digital pressure meter

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

From 185 USD

* Minimum order value: from 7 700 USD

Specifications

of ZET 7012-A VER.2 digital pressure meter

Metrological specifications
Measured value absolute pressure
Measurement error (from the measurement range) 0,1%
Upper limit of pressure measurement range 0,04 MPa; 0,06 MPa; 0,1 MPa; 0,16 MPa; 0,25 MPa; 0,4 MPa; 0,6 MPa; 1 MPa; 1,6 MPa; 2,5 MPa; 4 MPa; 6 MPa; 10 MPa
Bottom limit of pressure measurement range 160 Pa
Resolution 0,005 %
Additional measuring error (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 bps
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 ∅31.5×169mm
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


*Option

Designation

of digital pressure meter ZET 7012-A VER.1

The digital pressure meter ZET 7012-A VER.2 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.

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

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

INSTALLATION REQUIREMENTS

for ZET 7012-A VER.2 digital pressure meter

The pressure transducers should be installed in the corresponding mounting seats, connectors, weldolets, etc.

Mounting of the pressure transducer (installation into the mounting seat) is to be conducted with the use of wrench and hex connection. It is not allowed to use any other parts of the transducer package for installation purposes.

In order to ensure hermeticity of the transducer at the installation site, use the sealing end (paronite gasket).

Use of other sealing instruments (foam tape, linen fiber, etc.) is forbidden, since it may damage the sensing membrane. In this case, installation of the transducer is conducted in enclosed volume, thus creating excessive pressure, which may exceed the operating range of the transducer.

Installation requirements Figure 1

Installation requirements Figure 2

Digital pressure meters: contact layout

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

New connection scheme ZET 7012-A VER.2 digital pressure meter

Color Labelling Designation
Red 1 +(9…24) V
Blue 2 RS-485 line «B» or «DATA -»
Green 3 RS-485 line «A» or «DATA +»
Yellow 4 GND
Pale green 5 Current +
Pale green 6 Current –

Measuring network scheme

based on digital pressure meter ZET 7012-A VER.2

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.

Connection scheme of pressure transducers with current output is shown in the figure below:

Digital pressure meter ZET 7012-A VER.2 - Connection scheme

Basic configuration

Digital pressure meter ZET 7012-A VER.2

Digital pressure meter ZET 7012-A VER.2 - basic delivery scope

Basic configuration of digital pressure meter includes:

  • digital pressure meter ZET 7012-A;
  • coupling unit of measuring line  ZET 7001;
  • paronite gasket;
  • set of operational documentation.

Order form - If you want to place an order or to make a request regarding technical specifications of particular product, fill out the form below:

Data protection notification

Please note that the personal data provided by you is used exclusively for the purposes of fulfilling our contractual obligations, including, but not limited to: issuing invoices, delivery documents, documentation relating to customs clearance process, etc. We do not provide your personal data to any third party except for the purposes relating to our direct contractual obligations. Upon completion of order processing and expiry of the warranty period for the Products provided by our Company, we do not store or process any of your personal data. Please note, that our Company’s Confidential policy does not imply any advertising or marketing activities with the use of your personal data (including your Company name, address, your E-mail, phone number and other information provided by you with a view to placing an Order and organization of the Delivery).

Necessary measuring products

supplied upon request

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