use

Single-flange pressure transmitter is a remote transmission device installed on the pipeline or container to feel the measured pressure, the pressure through the capillary filled silicone oil (or other liquid) to the main body of the transmitter, and then by the transmitter body of the delta chamber and amplification circuit board, the pressure or differential pressure into 4 ~ 20mA.DC signal output (see structural schematic).

The combination of single flange pressure transmitter and intelligent amplifier plate can form an intelligent remote transmission pressure transmitter, which can communicate with each other, set and monitor with the hand operator in accordance with HART protocol.

In order to adapt to different installation needs, this series of transmitters has a variety of forms of remote transmission devices for users to choose, the main structure of the transmitter and the pressure transmitter is the same.

The single flange pressure transmitter is mainly used for measurement in the following situations

1. Sticky medium at high temperature

2, easy crystallizing medium

3, precipitating medium with solid particles or suspended matter

4, strong corrosive or highly toxic media

5, can eliminate the leakage of pressure pipe pollution of the surrounding environment phenomenon; It can avoid the tedious work of supplementing the spacer frequently due to the instability of the measurement signal when using the spacer.

6. Continuous and accurate measurement of interface and density

7, the remote transmission device can avoid the mixing of different instantaneous media, so that the measurement results truly reflect the actual situation of the process change.

8. Occasions with high hygiene requirements

For example, in the production of food, beverage and pharmaceutical industries, the transmitter contact medium parts are not only required to meet health standards, but also should be easy to wash to prevent cross-contamination of different batches of media.

Product characteristics

1, one by one to simulate the "online operation" test, to ensure that the transmitter in the limit ambient temperature, medium temperature and working pressure (including positive pressure or vacuum), stable and reliable work.

2, the use of "dynamic surface" remote diaphragm structure, the diaphragm will not be damaged after overload; The accuracy will not change after long-term work.

3. The filling system with full fusion welding and rigid sealing structure is selected to eradicate the occurrence of oil leakage.

4, the novel design of capillary combined parts, so that the capillary is reliable protection, in the field use is not easy to break.

5, the variety, form and size of various remote transmission devices, as well as a rich variety of filling liquid, can meet the measurement needs of different occasions.

6, can provide a variety of special needs products, including high temperature, high vacuum, fast response and unequal length capillary (length ≤3 meters) remote pressure transmitter.

Technical parameters and performance

Output signal: 4 ~ 20MA.DC two-wire system (analog)

Two-wire system 4 ~ 20mA DC signal superimposed on the digital signal, by the user to choose linear or root output. (Intelligent)

Power supply: 12 ~ 45V.DC(see the load characteristics diagram for details)

Load characteristics:

Power supply effect: <0.005% output range /V

Load impact: When the power supply is stable, there is no load impact.

Measurement accuracy: adjust the range of ±0.1%, ±0.2%

(The standard accuracy is ±0.2%, if you choose other accuracy, please indicate when ordering.)

Range ratio: 10:1 or 100-to-1

Zoni: Usually adjustable between 0.1 and 16 seconds, when filled with inert liquid or with remote device, the time constant will increase.

Start time: <2 seconds, no need to preheat

Working environment: ambient temperature -29 ~ 93℃ (analog amplifier)

-29 ~ 75℃ (Digital/intelligent amplifier)

-29 ~ 65℃ (with display head)

Ambient humidity ranges from 0 to 95%

Protection characteristics: Protection capability IP65

Explosion-proof type: flameproof type Exd II BT4-6

Intrinsically safe Exia II CT5

Static pressure effect: zero error: ±0.5%*** Maximum range limit, for 32MPa at pipeline pressure by zero correction.

Electromagnetic radiation effect: 0.05%*** large range value, receiving radiation frequency 27 ~ 500MHz, test field strength 3V/m.

Indicator (%) : LCD digital display accuracy ±0.2%

Vibration effect: 200Hz vibration in any direction, ±0.05%/g.

Installation position: The diaphragm is not installed vertically, which may produce a zero error of less than 0.24KPa, but can be corrected by zeroing.

Weight: 3.9Kg (excluding accessories)

Note: ① The working pressure of the single-flange pressure transmitter also depends on the specification of the selected flange.

The operating temperature of the remote transmission device is determined by the type of filling liquid selected.

The single flange pressure transmitter refers to the output change caused by the temperature action of the remote transmission device on one side.

The effect of static pressure and temperature is measured at the maximum range.

⑤ The capillary length of one side of the GP type single flange pressure transmitter is generally 1.5 meters, and the maximum length should not exceed 3 meters (special case agreement).