EYC P064 Series Bedienungsanleitung
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P064 SERIAL
DIGITAL INTELLIGENT
PRESSURE TRANSMITTER /
DIFFERENTIAL PRESSURE TRANSMITTER
INSTRUCTION MANUAL
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Warning
1. Place the transmitter horizontally before adjusting.
2. Adjust the zero point of the transmitter after it is installed on
site.
3. The process connection should be well installed and tightened
before the transmitter is pressurized.
4. The transmitter should be installed in a dry environment
preventing from getting wet by rain. In harsh environments,
protection box for the transmitter should be used.
5. It is forbidden for the user to disassemble the transmitter by
self.
6. Do not disassemble the transmitter cover in an
explosive/flammable environment when power is on.
7. Please check if the transmitter power supply voltage meets the
power supply voltage requirements in the manual.
8. The external grounding screw of the transmitter should be
connected to the ground securely.
9. The installation of the transmitter in an explosive environment
must comply with international, national and local standards,
specifications and guidelines. Please refer to the restrictions on
safe installation listed in the Explosion-proof section of the
manual.
10. Installation and use of the intrinsically safe transmitter with
safety barrier shall be carried out according to the specific
instruction manual.
11. When doing transmitter calibration and temperature
compensation using HART communication, use the
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communication equipment and software provided by the
manufacturer.
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Contents
Introduction.......................................................................................5
1.Introductio......................................................................................6
1.1 Overall appearance ............................................................6
1.2 Intelligent transmitter working principle ..............................6
2. Installation....................................................................................8
2.1 On-site installation..............................................................8
2.2 Relevant Issues of measurement methods......................11
2.3 Electrical Installation.........................................................15
2.4 Intrinsic Safety Explosion-proof Type Transmitter System
Wiring Diagram.......................................................................17
2.5 Isolation Explosion-proof Type Transmitter Instruction ....18
3.Debugging and Operation...........................................................19
3.1 Overview...........................................................................19
3.2 Button Operation for the Transmitter without the LCD
Display ....................................................................................20
3.3 Button Operation for the Transmitter with the LCD Display21
4.The flange transmitter installation & operation instructions........26
4.1 Overview...........................................................................26
4.2 Installation site..................................................................27
4.3 Calibration instrument.......................................................28
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The intelligent transmitter produced by our company is a
multi-functional digital instrument. It is designed with advanced,
mature and reliable silicon sensor or capacitive sensor technology
combined with advanced single-chip technology and sensor digital
conversion technology.
The powerful functions and high-speed computing capabilities
of MCU, the core component, ensure the excellent quality of the
transmitter. The entire design framework focuses on reliability,
stability, high-precision and intelligence.
The transmitter has powerful interface operation function. The
digital header can display pressure, percentage, current, and
0~100% analog indication. By key operation, zero point shift, range
setting and damping setting can be easily completed without
standard pressure source. The setting of basic parameters is very
convenient for on-site comissioning.
Signal conversion, signal acquisition and processing, and
current output control use the application-specific integrated circuit
(ASICS) to make the transmitter stable, reliable, and
vibration-resistant, with good interchangeability.
Introduction
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1.1 Overall appearance
1.2 Intelligent transmitter working principle
1.2.1 Working principle
Figure 1-1 is an electrical block diagram of the basic working principle of an
intelligent transmitter. The working principle and functions of the various
components will be described below.
1.Introduction
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Figure 1-1 block diagram of Transmitter principle
1.2.2 Intelligent circuit board
1) A/D conversion
The A/D conversion circuit uses a dedicated low-power integrated circuit
to convert the analog current output into a digital quantity by the demodulator
with an accuracy of up to 18 bits, which is supplied to the microprocessor as an
input signal.
2) Microprocessor
The microprocessor of the intelligent transmitter controls the A/D and D/A
conversion work, and can also complete self-diagnosis and realize digital
communication. During work, a digital pressure value is processed by the
microprocessor and stored as a digital to ensure precise correction and
engineering unit conversion. In addition, the microprocessor can also perform
sensor linearization, turndown ratio, damping time, and other functional
settings.
3) EEPROM memory
The EEPROM stores all configuration, characterization and digital
trimming parameters. This memory is non-volatile, so even if the power is
turned off, the stored data can be kept intact, so that intelligent communication
can be realized at any time.
4) D/A conversion
The D/A conversion converts the corrected digital signal sent from the
microprocessor into a 4-20 mA analog signal and outputs it to the loop.
5) Digital communication
Transmitters with the HART protocol can test and configure intelligent
transmitters via a single communicator. Or complete communication through
any host system host that supports HART communication protocol. The HART
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protocol uses the industry standard BELL202 frequency phase shift keying
(FSK) technology to superimpose the digital signal of 1200Hz or 2000Hz on
the 4~20mA signal to realize communication. When communicating, the
frequency signal does not cause any interference to the 4~20mA process.
Intelligent transmitters can be tested and configured with dedicated adapters
and software without HART protocol transmitters.
6) Display and buttons
The Intelligent transmitter with liquid crystal display can display the
pressure value, current value, 0%-100% ratio display and temperature value of
the sensor measured by the transmitter, and the transmitter can be configured
through the buttons on the LCD panel.
Intelligent transmitters without display can also be used to clear, actively
calibrate the transmitter through the S and Z buttons on the line panel.
2.1 On-site installation
2.1.1 Installation method
Our pressure transmitters can be mounted directly on 2" pipes
Or mount directly on the wall and on the dashboard. (as shown in Figure 2-1
and Figure 2-2)
2. Installation
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Figure 2-1 Capacitive transmitter installation
Figure 2-2 Piezoresistive transmitter installation
After loosening the locking screw, the electronic compartment can be
rotated 90°left and right. As shown in Figure 2-3.
Warning: Do not rotate more than 90°! So as not to break the internal
cable!
Figure 2-3 Housing rotation
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2.1.2 Pressure method
There are three types of capacitive transmitters, as shown in Figure 2-4:
·
Figure 2-4 Capacitor transmitter pressure map
The pressure-receiving type of the piezoresistive transmitter is mainly a
screw connection method, and the user can provide a pressure-welded joint
according to the specific thread specification.
2.1.3 The process connection hole distance adjustment of
differential pressure transmitter
The process connection holes on the pressure chamber are 1/4-18 NPT.
These process connection holes require a thread seal. When using a waist
flange joint, the transmitter can be easily removed from the production unit by
simply removing the upper and lower bolts of the joint. The center distance
between the two process connection holes is 54 mm. Rotating the waist flange
joint, the center distance can be changed to 50.8 mm, 54 mm, 57.2 mm
Waist flange type
Welding pipe joint type
Integration of the
three valve type
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