1151AP Absolute pressure transmitter

1151AP Absolute pressure transmitter

Overview

1151AP Absolute pressure transmitter can measure the absolute pressure in degassing system, distillation tower, evaporator, crystallizer and other equipment, and the allowable pressure is 10MPa. Absolute pressure transmitter δ One side of the chamber receives the measured absolute pressure signal, the other side is closed into a high vacuum reference chamber, and then it is converted into 4 ~ 20mA DC signal output.

AP absolute pressure transmitter can measure the absolute pressure in degassing system, distillation tower, evaporator, crystallizer and other equipment, and the allowable pressure is 10MPa. Absolute pressure transmitter δ One side of the chamber receives the measured absolute pressure signal, the other side is closed into a high vacuum reference chamber, and then it is converted into 4 ~ 20mA DC signal output.

Including GP type pressure (including negative pressure) transmitter and AP type absolute pressure transmitter. The combination of the above two types of transmitters and the intelligent amplifier can form an intelligent pressure transmitter, which can communicate with each other through the manual operator conforming to HART protocol for setting and monitoring.

Miniaturized capacitive pressure / differential pressure transmitter is a new type of transmitter produced by introducing foreign advanced technology and equipment. The key raw materials, components and parts are imported. The whole machine has been strictly assembled and tested. The product has the characteristics of advanced design principle, complete varieties and specifications, simple installation and use, etc. Because the appearance of this model fully integrates the structural advantages of the two most popular and widely used transmitters in China, it gives users a refreshing feeling. At the same time, it can be directly replaced with traditional 1151, CECC and other series products in installation, which has strong universality 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 launch the intelligent function with HART fieldbus protocol.

Product features editing and broadcasting of 1151AP Absolute pressure transmitter

High accuracy, good stability, two-wire input (special four wire system);

Solid components, plug-in printed circuit board; Small, light weight, strong and vibration resistant;

Range, zero point, external continuously adjustable; Positive migration can reach 500% and negative migration can reach 600%

Adjustable damping; Good one-way overload protection characteristics;

No mechanical movable parts, less maintenance workload; The whole series has unified structure and strong interchangeability of parts;

The diaphragm material in contact with the medium can be selected; (316L, Tan, has-c, Monel and other corrosion-resistant materials)

Explosion proof structure, all-weather use; Smart Hart fieldbus protocol

Editing and broadcasting of technical parameters

Features of 1151AP Absolute pressure transmitter

Objects used: liquid, gas and steam

Measurement range: 0 ~ 0.1kpa to 0 ~ 40MPa

Output signal: 4 ~ 20mA DC

Power supply: 12 ~ 45vdc, generally 24V

Field display: pointer type 0 ~ 100% scale display, LED digital display and LCD display are optional

Explosion proof grade: Flameproof diibt4, intrinsically safe iaiict6

Accuracy: ± 0.2%, ± 0.25%, ± 0.5%

Stability: the absolute value of the basic error of the maximum range shall not be exceeded within six months

Isolation diaphragm: 316 stainless steel, Hastelloy C-276, Monel or liner

Exhaust / drain valve: 316 stainless steel, Hastelloy C, Monel

Flange and joint: 316 stainless steel, Hastelloy C, Monel

Contact medium O-ring: nitrile rubber, fluororubber

Filling fluid: silicone oil or inert oil

Bolt: 316L stainless steel

Shell material: low copper aluminum alloy

Impulse connector: flange, npt1 / 4, center distance 54mm; Connector npt1 / 2 or M20 × 1.5 male thread ball cone seal, with center distance of 50.8, 54 and 57.2mm with joint (NPT taper pipe thread conforms to GB / t12716-91)

Signal connection hole: G1 / 2

Technical performance editing and broadcasting

Output signal: 2-wire system, 4 ~ 20mA DC

Digital signal superimposed on two-wire 4 ~ 20mA DC signal (intelligent)

Power supply: 12 ~ 45vdc

Power influence: < 0.005% / V

Load effect: when the power supply is stable, there is no load effect.

Measurement accuracy: ± 0.2%, ± 0.25%, ± 0.5% of the calibrated range

(the standard accuracy is ± 0.5%. If other accuracy is selected, please indicate it when ordering and selecting.)

Migration characteristics: 500% of the maximum positive migration

Maximum negative migration 600%

The absolute value of negative migration is not greater than one engineering atmospheric pressure.

The absolute value of the upper or lower limit after migration shall not exceed the upper limit of the maximum measurement range.

Absolute pressure transmitters shall not have negative migration.

Damping: usually adjustable between 0.2 ~ 1.67 seconds. When filling with inert liquid or with remote transmission device, the time constant will increase.

Start up time: ＜ 2 seconds, without preheating

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

-29 ~ 65 ℃ (with indicator)

Ambient humidity: 0 ~ 95%

Protection characteristics: IP65

Explosion proof type: Flameproof ExdIIBT4

Intrinsically safe ExiaIICT4

Static pressure influence: zero position error: ± 0.5% of the maximum range limit. For 32Mpa, it shall be corrected by zeroing under pipeline pressure.

Influence of electromagnetic radiation: 0.05% of the maximum range value, receiving radiation frequency of 27 ~ 500MHz, and test field strength of 3V / m.

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

Installation position: the diaphragm is not installed vertically, which may cause zero error less than 0.24kpa, but it can be eliminated by zero adjustment.