Baker Hughes Druck 8000 Series, Инструкция по эксплуатации

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Copyright 2010 Baker Hughes Company.
2 | TERPS Instruction Manual–English
The pressure measuring module consists of a welded metal construction, featuring a metal
diaphragm
*
(providing a flexible barrier to harsh process media), a glass-to-metal seal (for
electrical connections) and a fluid filled
*
cavity containing a silicon-based micro-machined
resonant structure.
The electronics module is available in two primary variants:
a.
DPS variants provide a digitally encoded signal derived from the measured frequency of the
resonant structure as it responds to applied pressure. A variety of digital encoding and
physical interface options are available.
b. RPS variants provide a square wave output with a frequency equal to that of the resonant
structure as it responds to applied pressure. An additional output (derived from the forward
voltage of a diode) provides a voltage responding to changes in temperature.
2.3.2 RPS8100 Minicore Models
The RPS8100 Minicore pressure sensor is designed to measure the pressure of non-condensing
dry gas.
The sensor consists of a pressure connector, a silicon-based micro-machined resonant structure
(directly exposed to the measured gas), an electronics module (not encapsulated), and electrical
connection facilities, structurally combined in a cylindrical metal housing.
The pressure connector allows the sensor to be mounted to a pressurized vessel or pipework.
The electronics module is housed in a compartment, separated from the external atmosphere by
glass-to-metal seals.
Low voltage electrical terminals are exposed at the rear of the compartment and are soldered to
a short length of cable for connection to the host equipment.
The sensor provides a square wave output with a frequency equal to that of the resonant structure
as it responds to applied pressure. An additional output (derived from the forward voltage of a
diode) provides a voltage responding to changes in temperature.
The pressure sensor is intended to be incorporated within an original equipment manufacturer's
host product, for which additional technical regulations and standards may be applicable.
* 80XX, 82XX and 83XX models only. 81XX models provide no harsh process media isolation.