Pressure measuring instrument 7012-A-VER.3

digitalfor integrationexplosion-proof

Integrated primary transducer Explosion-proof version RS-485 digital output 4-20 mA output version available 4-digit indicator Digital pressure meter ZET 7012-A-VER.3 is used for fast and simple absolute pressure measurements and measured values data transfer in digital format via RS-485 or 4-20 mA interface. ZET 7012-A VER.3 digital pressure meter is intended for integration into various technological processes automated control systems. Digital pressure meter ZET 7012-A-VER.3 consists of primary transducer and integrated measuring module. The primary transducer converts the pressure value into analog signal. The measuring unit digitizes the signal from the converter and transmits the pressure value in a digital form via RS-485 interface by means of Modbus protocol or via data transfer interface “Current loop” (4-20 mA). The membrane of the primary transducer is made of a silicon plate. The strain resistor circuit (bridge connection) is implemented on the basis of the “silicon on sapphire” technology (SOS). This allows to perform inertia-free dynamic measurements up to 1,000 Hz. In contrast to metal membranes with glued bridge strain resistors, SOS membranes allow to register pressure change at the level of 0.00001 from the upper range limit. Sensitivity of the electronic amplifier is 15 nV reduced to the input. The pressure meters are attached to the controlled object while the interface modules enabling data transfer are placed inside of electrical cabinets.