First, the structural principles of a structure KH-LZ series of metal rotameter consists of three parts a, indicator (intelligent indicator, local indicator) b, float c, taper measuring chamber 2, the working principle is Bottom-up by the media when measured conical top and bottom ends of the measuring tube float upward force to produce a differential pressure forming, suffered when the float rises immersed in the fluid force is greater than the weight of the float, the float will rise, along with increasing the total area of ??the annulus , fluid flow rate at the annulus immediately drop the upper and lower ends of the float pressure difference decreases, the force acting on the float also rises with decreasing until the lifting force equal to the weight of the float is immersed in the fluid, the buoy has stabilized at a certain height. Float level position that corresponds to the size of the measured medium flow. Built-in magnet float in the float moves up and down with the media, the magnetic field varies with the movement of the float. a, for in situ type, by in situ rotating magnet magnet coupling indicator with the float, and the occurrence of rotation, while driving the pointer through the dial indicates the size of the flow at this time. b, for intelligent metal rotameter, by intelligent metal rotameter indicator a solid-state magnetic sensor will change the magnetic field into electrical signals, the A / D conversion, a microprocessor, D / A output, LCD LCD to show the size of the flow and cumulative flow. Second, the product overview KH-LZ series of metal rotameter MCU using high quality micro-processing system to ensure that the meter in a variety of application areas of excellent performance. Excellent performance and reliability over the years metal flowmeter, and better cost performance has been widely petrochemical, steel, power, metallurgy, light industry and other industries of all ages. Industrial automation and process control is commonly used as a flow measurement instruments, it has a small pressure loss, large detection range (turndown ratio of 10: 1), easy to use features, it can be used to measure liquid, gas and steam flow, especially suitable medium low velocity flow measurement of small flows. LZ series of metal float flowmeter has local display and intelligent remote type, with a pointer display, instantaneous flow, cumulative flow, LCD, upper and lower alarm output, accumulated pulse output, the standard two-wire 4-20mA current output, etc. forms, provides users with a very broad choice. Third, the main features of 1. Suitable for small diameter and low flow 2. reliable, low maintenance, long life 3. For less demanding downstream straight pipe 4 has a wide range of flow rates of the 10: 1 5. place type pointer close to linear 6. Intelligent metal rotameter indicator with LCD display, can display instantaneous, cumulative flow, but also the output pulse, alarm output with temperature compensation 7. 8. situ type, far transmission type, dips, explosion, corrosion and other forms of four main technical parameters 1, measurement range: Water 2.5 ~ 100000l / h (20 ℃) ??2, turndown ratio: 10: 13, Accuracy: 1.0 1.5,2.5 4, working pressure: DN15, DN25, DN50 for PN4.0MPa maximum 10.0MPa, DN80, DN100 for PN1.6MPa maximum 6.4MPa 5, medium temperature: -40 ℃ ~ 300 ℃ 6, medium viscosity: DN15 : η <5mPa · s (F15.1 ~ F15.3) η <30mPa · s (F15.4 ~ F15.8) DN25: η <250mPa · s DN50 ~ DN150: η <300mPa · s 7, ambient temperature: LCD type: -40 ℃ ~ 85 ℃ pointer type: -40 ℃ ~ 120 ℃ 8, Connection: Flange (DIN2501 or performance standards provided by the user flange standard manufacturing) 9 meter height: 250mm 10, cable interface: M20 * 1.5 11, Power supply: 24VDC wire 4 ~ 20mA or 85 ~ 265VAC 50 / 60Hz (remote type) 12, Alarm output: upper or lower instantaneous flow alarm relay output (maximum contact capacity 5A @ 250VAC) or collector open output (100mA @ 30VDC maximum internal impedance 100Ω) 13, pulse output: Cumulative pulse output, a minimum interval of 10 seconds per pulse (AC type) or a pulse every 50 milliseconds. 14. LCD: double LCD display instantaneous flow rate and cumulative flow. 15, intrinsically safe: Exia II CT4 16, measuring tube material: 316 stainless steel (ordinary) or Teflon-lined lower (anti-corrosion) Product Selection Code into the measuring tube structure -50 -51 on the progress under -52 -53R side into the side next entry on the outfeed -53L left right out code wetted R0 0Cr18Ni2Mo2Ti R1 1Cr18Ni9Ti Rp PTFE T1 Titanium Rl 316L Code KH-LZ pipe diameter DN15 15 DN25 25 DN50 50 DN80 80 DN100 100 DN150 150 DN200 200 code structure without additional damping T jacketed Z Y G high temperature high pressure type code in the form of code combinations M1 indicator situ indicator, mechanical indication instantaneous flow M2-powered, mechanical indication of instantaneous flow, instantaneous LCD / cumulative flow M3-powered, non-mechanical indication, LCD instantaneous / accumulated flow code without power supply only M1 indicator A 220VAC, 4-20mA output B battery-powered, no output C 24VDC, power wire, 4-20mA output D 24VDC, three, four-wire power supply, 4-20mA output code-proof mark l d intrinsically safe explosion-proof housing iaCT5 Square Garden Diibt4 housing code no no alarm or pulse output or pulse output K1 alarm limit alarm or one pulse output K2 lower limit alarm or one pulse output K3, lower alarm or dual pulse output