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E-mail
3172905651@qq.com
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Phone
15195329310
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Address
No. 15 Gongyuan Road, Jinhu County, Huai'an City, Jiangsu Province
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Jinhu Dahua Automation Instrument Co., Ltd
High static pressure differential pressure transmitter
NegotiableUpdate on 12/09
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Overview
The high static pressure differential pressure transmitter is a new type of transmitter produced by introducing * technology and equipment. The key raw materials, components, and parts are all imported, and the whole machine is strictly assembled and tested. This product has advanced design principles, complete varieties and specifications, and easy installation and use.
Product Details
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High static pressure differential pressure transmitterIt is a new type of transmitter produced by introducing * technology and equipment. The key raw materials, components, and parts are all imported. The whole machine has undergone strict assembly and testing. This product has advanced design principles, complete varieties and specifications, and easy installation and use. Due to the integration of the structural advantages of two popular and widely used transmitters (Rosemount 3051 and Yokogawa EJA) in the appearance of this model, it gives users a refreshing feeling. At the same time, it can be directly replaced in installation with traditional products such as 1151, Shanghai Guanghua CECC, Shanghai Weltai WT3000, Chongqing Wei'an SSTCC, etc., with strong universality and substitution ability. To adapt to the continuous improvement and development of domestic automation level,High static pressure differential pressure transmitterIn addition to its compact and exquisite design, it also introduces intelligent features with HART communication protocol. working principle The process pressure is transmitted to the center measuring diaphragm of the delta chamber through the isolation diaphragm on both sides or one side, and the filling liquid. The central diaphragm is a tensioned elastic element that produces corresponding deformation displacement in response to the pressure difference acting on it on both sides. Its displacement is proportional to the differential pressure, with a maximum displacement of about 0.1mm. This displacement transformation forms a differential capacitor on the capacitor plate, which is converted into a 4-20mADC signal output in a two-wire system by electronic circuits. High static pressure differential pressure transmitterFeatures: ★ High accuracy up to 0.2% level; ★ Good stability; ★ Two wire system (special four wire system is available); Solid components, plug-in printed circuit boards; ★ Small, lightweight, sturdy and vibration resistant; ★ Range and zero point can be continuously adjusted externally; ★ Positive migration can reach 500%; Negative transfer can reach 600%; ★ Adjustable damping; ★ Good one-way overload protection characteristics; ★ No mechanical movable parts, low maintenance workload; ★ Unified structure across the entire series, with strong interchangeability of components; ★ The membrane 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; ★ Intelligent HART fieldbus protocol. Functional Parameters ★ Target audience: liquids, gases, and vapors ★ Measurement range: 0-0. 1kPa to 0-40MPa ★ Output signal: 4-20mADC (special for four wire 220V AC power supply, 0-10mADC output) ★ Power supply: 12-45VDC, usually 24V DC ★ Load characteristics: Related to the power supply, the load capacity at a certain power supply voltage is shown in the above figure (load characteristics), and the relationship between load impedance RL and power supply voltage VS is: RL ≤ 50 (Vs-12) ★ Indicator: pointer type linear indication with 0 to equal division scale or LCD liquid crystal or LED digital display ★ Explosion proof: a. Explosion proof type dIIBT4 b. Intrinsically safe iaIICT6 ★ Range and zero point: externally continuously adjustable ★ Positive and negative transfer: After the zero point undergoes positive or negative transfer, the values of the upper and lower limits of the range and measurement range cannot exceed the upper limit of the measurement range. (Intelligent type: range ratio of 15:1) The maximum positive transfer is 500% of the maximum small calibration range; The maximum negative transfer is 600% of the minimum calibration range ★ Temperature range: Amplifier operating temperature range: -29~+93 ℃ (LT type: -25~+70 ℃) Measuring element filled with silicone oil: -40~+104 ℃ When filling high-temperature silicone oil into flange type transmitters: -20~+315 ℃, ordinary silicone oil: -40~+149 ℃ ★ Static pressure: 2.5, 4, 10, 25, 32MPa ★ Humidity: Relative humidity is between 0 and ★ Volume suction capacity: ＜ 0.16cm3 Technical data (Without migration, under standard working conditions, filled with silicone oil, 316 stainless steel isolation diaphragm) ★ Accuracy: ± 0.2%, ± 0.5% ★ Dead zone: None (≤ 0.1%) ★ Stability: Within six months, the basic error value should not exceed the maximum range ★ Vibration influence: In any axial direction, when the vibration frequency is 200Hz, the error is ± 0.05%/g of the upper limit of the measurement range ★ Power supply impact: less than 0.005%/V of the output range ★ Load impact: If the power supply is stable, the load will not be affected High static pressure differential pressure transmitterSelection Table:
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