| Detailed Product Description： | KH-LG integral orifice flowmeters Details: Integral Orifice flowmeter is the standard orifice plate with multi-parameter differential pressure transmitter (or differential pressure transmitters, temperature transmitters and pressure transmitters) supporting process consisting of a high turndown ratio differential pressure flow, flow measure gases, vapors, liquids and natural gas, widely used in petroleum, chemical, metallurgy, electricity, heating, water and other areas of control and measurement. Orifice throttling device is a standard orifice may not need to be directly calibrated in accordance with national standards, a national standard GB2624-81 ; 2. International Standard ISO5167 3. Ministry of Chemical Industry Standard GJ516-87-HK06. Orifice Flowmeter Scope: 1. Nominal diameter: 15 mm ≤DN≤1200mm 2. Nominal pressure: PN≤10MPa 3. Working temperature: -50 ℃ ≤t≤550 ℃ 4. turndown ratio: 1:10, 1: 15 5. Accuracy: 0.5, a throttling device, also known as differential pressure flow meter, is detected by a member (orifice) and the secondary device (differential pressure transmitter and flow indicator) composed of a wide range of applications the gas. steam and liquid flow measurement. has a simple structure, easy maintenance, stable performance, and reliability. Orifice flowmeter shape: Integral Orifice flowmeter works: full throttle fluid flow through the conduit pipe inside, causing local contraction in the vicinity of the orifice, the flow rate increases, resulting in static pressure in the upstream and downstream sides of the difference . Under the conditions of the relevant parameters are known, according to the principle of continuity and Bernoulli's equation flow can derive the relationship between the differential pressure and flow and to obtain traffic. The basic formula is as follows: c- d- discharge coefficient under working conditions dimensionless orifice or orifice pipe diameter upstream of the throat diameter D- qm- mass flow under operating conditions Kg / s qv- volume flow m / s? ? - density diameter ratio d / D dimensionless fluid Kg / m can be dimensionless coefficients of expansion throttle application and the technical indicators:? throttling element name applies pipeline (DN mm) applicable to diameter ratio B (d / D ) Application features outflow coefficient uncertainty Ec% Design Standards corner tapping standard orifice ring Chamber 50-50050-500 0.2-0.75 0.2-0.75 for cleaning medium GD structure which is suitable for measuring the flow of high temperature and pressure conditions 0.6 -0.75% ISO5167 GB / T2624-93 clamping ring 50-500 0.2-0.75 easy to remove dirt, cleaning fluid can be used to measure the flow rate is not inclined drilled 450-1000 (3000) 0.2-0.75 flange pressure standard orifice 50-1000 0.2-0.75 easy to remove dirt, suitable for a variety of media 0.6-0.75% ISO5167 GB / T2624-93 take pressure away from the standard orifice diameter 50-1000 0.2-0.75 corner tapping standard nozzle (ISA1932 nozzle) 50-500 0.3-0.8 pressure loss, long life, especially for steam flow measurement 0.8-1.2% ISO5167 GB / T2624-93 long nozzle diameter 50-630 0.2-0.8 pressure loss is small life, LGP Long Trail The nozzle assembly for high parameters of water and steam flow measurement 2.0% ISO5167 GB / T2624-93 classical Venturi tube machining type 100-800 0.2-0.8 pressure loss is small, less than the required straight pipe orifice, nozzle 1.0% ISO5167 GB / T2624 -93 crude welding iron formula 200-1200 (2000) 0.4-0.7 1.5% Venturi nozzle 65-500 0.316-0.77 above 1.2-1.75% ISO5167 GB / T2624-93 1/4 hole plate 25-150 0.245-0.6 applicable at low Reynolds 2.0-2.5% DIN BS tapered inlet orifice 25-250 0.1-0.316 above 2.0% BS round orifice 50-1500 0.32-0.8 applies Dirty, precipitation bubbles or solid particles containing the fluid to be measured . 1.5% DIN eccentric orifice 100-1000 0.46-0.84 1-2% ASME orifice plate 12.5-40 0.2-0.75 for small pipe flow measurement 0.75% ASME Orifice 12.5-150 0.2-0.75 lens suitable for high ambient temperature small Pipeline flow measurement 0.6-0.75% ISO5167ASME tip orifice is greater than or equal to 15 0.2-0.62 0.2-0.8 1.5-2.0% 25-400 double orifice flow measurement for large-limiting orifice |
| No.13600589
