Intelligent pressure transmitter

I. Product introduction

RST3051 differential pressure/pressure transmitter's key raw materials, components and parts are imported or produced by joint venture. The whole machine has been strictly assembled and tested. The product has the characteristics of advanced design principle, complete varieties and specifications, easy to install and use. As this model completely integrates the structural advantages of the two most popular and widely used transmitters in China (Rosemont 3051 and Yokogawa EJA) in appearance, it makes users have a refreshing feeling, and has strong versatility and substitution ability. In order to adapt to the continuous improvement and development of domestic automation level, this series of products not only have small and exquisite design, but also have the intelligent function of HART fieldbus protocol.

Ii. Product features

1. Measuring performance of stage, used for measuring differential pressure, pressure, liquid level and flow rate;

2. High precision: digital precision + (-) 0.05%; Simulation accuracy + (-) 0.5% ~ + (-) 0.1%F·S;

3. Range, zero point external continuously adjustable, range ratio 100:1;

4. Positive migration can reach 500%, and negative migration can reach 600%;

5. Good stability: 0.25% for 60 months;

6. Overpressure resistance;

7. Solid state sensor design;

8. Unified structure and strong interchangeability of the whole series;

9. The diaphragm material of contact medium is optional;

10. Low-pressure casting aluminum alloy shell;

11. Measurement rate: 0.2s

12. Miniaturized, all stainless steel flange, easy to install;

13. Process connection is compatible with other products to achieve the best measurement;

14. Intelligent transmitter using 16-bit computer;

15. Standard 4-20MA, with HART protocol based digital signal, remote control;

16. Support the upgrading of fieldbus and field-control-based technologies;

Iii. Technical parameters

1. Objects: liquid, gas or steam

2. Output signal: 4 ~ 20mADC. (Specially, it can supply 0-10mA DC output for four-wire 200V AC)

3. Supply voltage: 12-36V DC, standard value: 24VDC;

4. Ambient temperature: -25 ~ 70℃ (general transmitter), -15 ~ 70℃ (with field indicator)

5. Measuring temperature: -40-104℃, flange filling silicone oil -40-104℃, filling high temperature silicone oil 15-315℃;

6. Storage temperature: -40 ~ 100℃;

7. Relative temperature: 0-100%RH;

8. Protection grade: d Ⅱ BT4, ia Ⅱ CT5;

9. Power effect: less than ±0.005%/V of output range;

10. Vibration influence: 200Hz in any direction, resulting in an error of 0.05%/g of the maximum range;

11. Influence of installation position: When the working diaphragm is not installed vertically, a zero error of not more than 0.24Pa may occur, and the error may be eliminated by adjusting zero, which will affect the measuring range;

12. Stability: no more than the accuracy of transmitter within six months;

13. Indicator: Linear indicator 0 ~ 100%; 3-1/2 bit LCD display;

14. Range and zero: continuously adjustable externally;

15. Positive and negative migration: the maximum positive migration was 500% and the maximum negative migration was 600%;

16. Material isolation diaphragm: 316L stainless steel, Ha-alloy C, Monel alloy, tantalum;

Vent/drain valve: 316L stainless steel, Ha alloy -C, Monel alloy;

Flanges and joints: 316L stainless steel, Ha alloy -C, Monel alloy;

"O" ring: fluororubber; Pouring liquid; Silicon inert oil; Bolts: 316L stainless steel; Electronic housing: low copper and aluminum alloy;

Iv.Product selection