Pointer LZ metal tube float flowmeter LZ-100 remote transmission metal tube float flowmeter

Description :

　　This product is a metal structure float flowmeter suitable for measuring liquids and gases. The float moves upward under the action of fluid and buoyancy, and after balancing with the weight of the float, it is transmitted to the dial through magnetic coupling to indicate the corresponding flow rate, which can output a 4-20mA electrical signal.

　　1、 Technical parameters:

　　Protection level: 1P65

　　Material: Stainless steel PTFE

　　Work pressure: 1.6-4.0MPa

　　Environmental temperature: -25 ℃ -+65 ℃

　　Full stainless steel case, aluminum alloy case, contactless and non transmission mechanism ESK transmitter 4-20mA electrical signal output, two-wire inductive limit switch

　　2、 Characteristics:

　　1. All metal structure design, sturdy, simple, resistant to high pressure, high temperature, corrosion, and long service life;

　　2. Short travel, total height of 250mm, easy to install;

　　3. Mechanical pointer indicates instantaneous flow rate on site, LCD displays instantaneous flow rate and cumulative flow rate;

　　4. Intelligent indicator, using a new foreign signal acquisition and processing chip, modular design, without hysteresis;

　　5. Equipped with data recovery, data backup, power down protection, and error self diagnosis functions;

　　6. HART type indicator, two-wire 24VDC power supply, 4-20mA standard current signal output combined with HART protocol;

　　7. Parameter configuration and on-site adjustment can be carried out through the HART communication controller;

　　8. Connect to the PC serial port and calibrate the instrument on site through a Windows program;

　　9. Can be used in flammable and explosive hazardous environments;

　　10. There are various installation forms such as vertical, horizontal, top and bottom out, bottom in and side out, and side in and side out, with flange or threaded connections.

　　3、 Questions to note when selecting:

　　1. When selecting a float flowmeter, the first step is to understand the product standards implemented by the metal tube float flowmeter manufacturing enterprise, especially the regulations on accuracy and display scale. Secondly, it is necessary to understand the manufacturing and technical level of the product. At the same time, it is necessary to combine the process requirements in flow measurement, especially in situations where high measurement or control accuracy, intuitive scale display, and high medium viscosity are required, to choose a float flowmeter that can directly display the medium flow rate and has density and viscosity compensation performance.

　　2. Master accurate process conditions and provide accurate medium parameters. Because the conversion and verification of scales are based on the medium conditions:

　　3. Select appropriate materials for measuring components. Generally, it is necessary to choose measurement materials with good anti-corrosion performance. Only by ensuring that the float and measuring components are not corroded by the medium for a long time, can the accuracy requirements of the product during long-term operation at the factory be guaranteed.

　　4. Choose a range that can keep the normal working flow within 50% to 80% of the full scale. The normal working flow rate is below 50% of the n-range, which increases the absolute error at the measurement point and is not conducive to control accuracy.

　　4、 Installation:

　　The inlet of the flowmeter should have a straight pipe section of at least 5 times the diameter of the pipe, and the outlet should have a straight pipe section of 250mm

　　A bypass should be added to the metal tube float flowmeter to facilitate troubleshooting and ensure that it does not affect production during blowdown;

　　If the medium contains solid impurities, it should be considered to install a filter between the valve and the straight pipe section;

　　If the medium contains ferromagnetic substances, a magnetic filter should be installed;

　　When the temperature of the tested medium is higher than 220 ℃ or the fluid temperature is too low to cause crystallization, insulation protection measures should be taken. A jacket type should be selected for cooling or insulation.

AfterSalesService :

• Pointer LZ metal tube float flowmeter