Double Flange Pressure Transmitter DC4-20mA+HART Protocol For Petroleum Kaidi KD-CYYZ3051S

Intelligent pressure transmitter is a new type of intelligent instrument jointly developed by our company using domestic multi-party technical forces. The instrument uses microprocessor technology for temperature compensation and nonlinear compensation, thereby greatly improving the measurement accuracy of the instrument, improving temperature characteristics, expanding the range ratio, and adding intelligent configuration functions, further satisfying the high reliability and high stability of industrial field instruments. Require. The whole machine leaves the factory after strict testing. It has the characteristics of reliable product quality, complete varieties and specifications, and easy installation and use.

◐During the operation of the instrument, the instrument can be configured in real time, such as modifying the range, monitoring variables, etc.

◐The pressure signal can be intelligently linearized to ensure accurate and reliable measurement data.

◐There are reverse protection circuits and current limiting circuits on the circuit board to avoid accidental damage to the circuit as much as possible.

◐The configured parameters are stored in EPROM and can remain unchanged.

◐High precision and high reliability.

◐Solid components, pluggable electronic circuit boards, robust against vibration.

◐Explosion-proof structure, all-weather use.

◐Span, zero point and damping are continuously adjustable on site.

Output signal: DC4-20mA+HART protocol

Output mode: linear output

                      Square root output (remotely adjustable via configuration software)

Measuring range:

Zero and Span: It can be adjusted with the Span and Zero buttons of the machine, or remotely with the HART handheld smart terminal.

Positive and negative zero migration: when the zero is negative, the lower limit of the range must be > or =-URL; when the zero is positive, the upper limit of the range must be < or =+URL. Inspection range must be > or = small range.

Damping time constant: The time constant is adjustable, in increments of 0.1 seconds, from as small as 32 seconds. If the damping time is 0, the default is 0.1.

Ambient temperature limit:-40~85℃(normal type)  -20~70℃(LCD head)

Process Temperature Limits:-40~175℃

Storage Temperature Limits:-40~85℃

Ambient humidity: 0-95% relative humidity

Volume change: <0.01lin³(4px)³ (under the reference conditions of the zero benchmark calibration range, silicone oil filling, built-in 316L stainless steel isolation diaphragm)

Accuracy:＜5:1≤±0.1%FS (Turndown ratio)

                 ≥5:1≤±0.25%FS(Turndown ratio)

Stability: 6 months, ±0.5% URL

Ambient temperature influence: -29~85℃

Zero point error: 0.5%URL/56℃

Overall error: (0.5%URL+0.2% calibration range)/56℃

Vibration effect: On any axis, the vibration effect is 0.2% URL/g at 200Hz

Power supply range:12~36VDC

Intrinsically safe explosion-proof: Ex ia IIC T6 Ga

Note: Intrinsically safe must be powered by a safety barrier or an intrinsically safe power supply

Influence of installation position: zero drift is at most ±0.25KPa. All zero drift can be corrected; no effect on span.

Load Effect: No load effect unless there is a change in supply voltage

Load characteristics: current type load≤{(Us-12)/0.02(Us=supply voltage)}Ω