Yokogawa PDS474 series pressure transmitter

PDS474 transmission pressure transmitter is used to measure pressure, and transmit it to 4-20m A D.C current (Overlay the hart communication) or PROFIBUS-PA communication signals, FF communication signals; remote setting, monitoring and other functions can be realized through the communication equipment.

PDS474 transmits the parameters of the pressure transmitter

Accuracy

Range ratio: r≤5                 δ≤（0.09+0.01r）%

Range ratio: 5＜r≤20         δ≤（0.09+0.012r）%

Basic error, gyrus difference, end-base consistency, and reproducibility effects were included

Temperature influence

-10℃～+60℃               

δ1≤(0.15*r+0.2)%     r<10

δ1≤(0.25*r+0.2)%     10<r≤20；

Note: The remaining temperature ranges are multiplied by 2 as described above

Power load impact

In the range of 15.8v≤u≤ 45v,230ω≤r≤ 500 ω, the effect of the power change shall not exceed 0.005% / v of the calibration range electromagnetic compatibility

Under the following electromagnetic environment conditions, the impact amount shall not exceed 0.1% of the set measuring range

magnetic field intensity: ≤400A/m

radio frequency interference: ≤10V/m（80MHzà1GHz）

Static disturb: ≤8000V

Electric fast transient pulse group interference: ≤2000V（5kHz）

Process medium: Gas,fluid or steam

Display: LCD display contains five primary variables, five-bit units, and other flag segment codes

Range ratio

The ratio of maximum to minimum range can be up to 20:1

Low-end value and high-end value are adjusted

Enviorment temperature:

-40～+85℃（Fill in silicone oil ）

-35～+85℃（LCD display )

(Intrinsic safety explosion proof products   ≤60℃）

Process temperature: 

It was determined by the distant transmission and sealing fluid（See Product Type Spectrum )

Suitable humidity

Relative humidity ≤95%

Overload limit

It is the flange nominal pressure and the minimum in the maximum range of the transmitter.

Failure warning: When the transmitter component fails, the self-diagnostic procedure follows the user's choice, drive the output warning message or a set alarm current. Use information information be used to the fault terminal

Configuration

Native keys are set or configured through communication

Explosion proof certification

Intrinsic safety（Ex iaⅡC T6）and explosion suppression（Ex dⅡC T6）

Shell protection grade: IP67

Installation

Transmitter body 2” bracket pipe instal, far transmission part of the flange is installed directly 

Weight

Transmitter body weight 1.6kg，the distal transmission portion varies by flange specifications and capillary length 。

Range and measuring range