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technical article
Metal tube float flow meter full metal structure suitable for high temperature and high pressure corrosive medium
2012-3-23 19:33:30

采用变面积测量原理,对多种流向的气体和液体进行流量测量。 The metal tube float flow meter uses the variable area measurement principle to measure the flow of gases and liquids in a variety of directions. Compared with the glass rotor flowmeter, the pressure level of the flowmeter is improved, and the remote transmission and accumulation of the flow signal can be realized. The specifications are complete, including on-site instruction type, electric remote transmission type, corrosion resistance type, jacket type, damping type, alarm and explosion-proof type. Among them, the electric remote transmission type has 4 ~ 20mA standard analog signal output (compatible with HART protocol), which can be used with various secondary meters or computers. It has functions of accumulation, digital communication, on-site modification of measurement parameters, and different power supply methods. for selection. Widely used in chemical, petroleum, power generation, food, pharmaceutical and water treatment sectors.

Features:

● Superior security

● Easy to install

● High temperature and pressure resistance

● Multiple output methods

● Low pressure loss

● Superior economy

适用于小口径和低流速介质流量测量;工作可靠,维护量小,寿命长;金属管浮子流量计对于直管段要求不高;较宽的流量比10:1;双行大液晶显示,可选现场瞬时/累计流量显示,可带背光单轴灵敏指示;非接触磁耦合传动;金属管浮子流量计全金属结构,适于高温、高压和强腐蚀性介质;可用于易燃、易爆危险场合;可选二线制、电池、交流供电方式;多参数标定功能;金属管浮子流量计带有数据恢复,数据备份及掉电保护功能. 金属管浮子流量计为防止在运输途中损坏,指示器中装有固定指针的橡皮筋,接线前应打开指示器左盖把它轻轻取走,不要使指针位置变化。 ZK-LZ series metal tube float flowmeter is suitable for small diameter and low flow rate medium flow measurement; reliable operation, small maintenance and long life; metal tube float flowmeter does not require high straight pipe section; wider flow ratio is 10: 1 ; Double-line large LCD display, optional on-site instantaneous / accumulated flow display, and single-axis sensitive indication with backlight; non-contact magnetic coupling transmission; metal tube float flowmeter full metal structure, suitable for high temperature, high pressure and strong corrosive media; Can be used in flammable and explosive hazardous situations; optional two-wire system, battery, AC power supply mode; multi-parameter calibration function; metal tube float flow meter with data recovery, data backup and power failure protection functions. Metal tube float flow meter is To prevent damage during transportation, the indicator is equipped with a rubber band to fix the pointer. Before wiring, open the left cover of the indicator and gently remove it. Do not change the position of the pointer. Open the right cover of the indicator, after the cable passes through the cable lead-in device, connect it according to the wiring diagram of the rotation angle transmitter, tighten the compression nut to fix the cable, and then tighten the fastening screws of the left and right covers Waterproof and dustproof. Remove the split ring and float guide ring in the measuring tube, remove the stopper that prevents the float from shaking during transportation, and then install it as it is. The flowmeter should be installed vertically or horizontally on a non-vibration pipeline. It is best to install a bypass pipe for easy maintenance. The direction of the measured medium flow of the vertical installation type flowmeter must be from bottom to top. The valve must be installed downstream of the measurement position. At the inlet and outlet of the flowmeter, a certain straight pipe section should be ensured. When the measured medium contains solid particles, an appropriate filter should be installed, and the measured medium contains magnetic particles, a magnetic filter should be installed. When installing Ex explosion-proof flowmeters, they must be implemented in accordance with the electrical safety regulations of the People's Republic of China for explosion-hazardous locations. Don't mention: Before installing the metal tube float flowmeter, blow off the contamination and welding impurities in the pipe. If the liquid contains solid impurities, a corresponding filter should be installed between the valve and the straight pipe section.

技术参数: Technical parameters of metal tube float flowmeter :


Model specifications: LZZ series, LZD series (can be equipped with M1, M2 or M6 converters, and add various functions required by customers)

Path: DN15 ~ 200

Measuring range: water (20 ℃): 2.5 ~ 180000L / h

Air (1.013 × 10 5 Pa, 20 ℃): 0.07 ~ 3000m3 / h

Accuracy level: 1.5, 2.5

Range ratio: 10: 1

Maximum pressure: DN15 ~ 50: 4.0MPa DN80 ~ 150: 1.6MPa; Jacket pressure level: 1.6MPa

Maximum temperature: 300 ° C

Ambient temperature: -25 ℃ ~ 55 ℃

Relative humidity: 5% to 95%

Output signal: 4 ~ 20mA (compatible with HART protocol)

Power: 24V DC

Power consumption: <3W

Explosion-proof and explosion-proof grade: ExdⅡCT4 ~ T6

Intrinsically safe explosion-proof grade: ExibⅡCT5

Equipped with safety barrier: LB906

Flow height: 250mm (DN150, DN200 is 350mm)

Connection method: flange (GB / T9119-2000)