{"id":969,"date":"2021-06-10T16:33:37","date_gmt":"2021-06-10T08:33:37","guid":{"rendered":"http:\/\/201230ip92c2.adwebcloud.com\/?post_type=product&p=969"},"modified":"2021-10-12T13:54:40","modified_gmt":"2021-10-12T05:54:40","slug":"portable-doppler-open-channel-flow-meter","status":"publish","type":"product","link":"https:\/\/www.hginstrument.com\/id\/flow-instrument\/portable-doppler-open-channel-flow-meter\/","title":{"rendered":"Portable Doppler Open Channel Flow Meter"},"content":{"rendered":"
Brief introduction:<\/strong><\/h5>\n

Portable type Doppler Open Channel flow meter consists of a portable flow calculator and a transducer. The transducer consists of a flow velocity sensor, a water depth sensor of ultrasonic principle, a water depth sensor of pressure principle and a conductivity sensor, which are separately used to measure flow velocity, depth, and conductivity of water in rivers, streams, open channels and pipelines.<\/p>\n

 <\/p>\n

Composition of the transducer:\u00a0<\/strong><\/p>\n

\"transducer<\/strong><\/p>\n

 <\/p>\n

Detailed illustration for the transducer as follows:<\/strong><\/p>\n

\u00a01)\u00a0 <\/strong>Water flow velocity measurement uses ultrasonic Doppler principle in Quadrature Sampling Mode. The flow sensor transmits ultrasonic energy through its epoxy case into the water. The suspended sediment particles or small gas bubbles in the water reflect some of the transmitted ultrasonic energy back to the flow sensor\u2019s ultrasonic receiver which processes this received signal and calculates the water flow velocity.<\/p>\n

\u00a0 2) <\/strong>Two methods for water depth measurement. One method is using the top mounted ultrasonic sensor in the transducer to measure water depth. Another method is using the bottom mounted pressure sensor in the transducer to measure water depth. User should select the suitable water depth measuring method according to the on-site condition.<\/p>\n

\u00a0 3)<\/strong> In the transducer, there is a conductivity meter which has 4 conductivity electrodes which expose to the water at the top of the transducer. When the transducer is working, the conductivity electrodes continuously measure the conductivity of the water for user analyzing the nature of the water in open channels or pipes.<\/p>\n

 <\/p>\n

Features\uff1a<\/strong><\/p>\n

\u25cf Rechargeable battery can work up to 50 hours.
\n\u25cf The fluid must contain a certain amount of air bubbles or suspended solid particles
\n\u25cf 20 coordinate points to describe cross section of the river\u2019s shape.
\n\u25cf Measurement of flow velocity, depth and conductivity of fluid
\n\u25cf Flow Velocity Range: 0.02 ~ 0.8m\/s,\u00a0 0.02 ~ 1.6m\/s, 0.02 ~ 3.2m\/s, 0.02 ~ 6.4m\/s, 0.02 ~ 13.2m\/s,\u00a0 bi-directional, accuracy\u00a0 1%.
\n\u25cf Depth can be measured by the pressure sensor or ultrasonic level sensor principles.
\n\u25cf Depth Range: 0.02 to 5 m (for ultrasonic principle, error: \u00b11mm); 0 to 10m (for pressure principle, error: \u00b12mm).
\n\u25cf Measurement of flow velocity in both forward flow and reverse flow.
\n\u25cf With coordinate correction and pressure compensation function.
\n\u25cf IP68 Epoxy-sealed body design of transducer, long time working under water.
\n\u25cf RS485 communication (MODBUS protocol) optional, for connecting to the upper computer.<\/p>\n

 <\/p>\n

Technical data of\u00a0 Transducer:<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Velocity:<\/td>\nVelocity range :<\/td>\n0.02 ~ 0.8m\/s,\u00a0 0.02 ~ 1.6m\/s, 0.02 ~ 3.2m\/s, 0.02 ~ 6.4m\/s, 0.02 ~ 13.2m\/s, Bidirectional<\/td>\n<\/tr>\n
Velocity accuracy:<\/td>\n\u00b11% measured velocity<\/td>\n<\/tr>\n
Velocity resolution:<\/td>\n1mm\/s<\/td>\n<\/tr>\n
Depth
\n(Ultrasonic principle):<\/td>\n		Range:<\/td>\n0.02 to 5 m<\/td>\n<\/tr>\n
Akurasi:<\/td>\n\u00b1 1%<\/td>\n<\/tr>\n
Resolution:<\/td>\n\u00a0\u00b1 1 mm<\/td>\n<\/tr>\n
Depth
\n(Pressure principle)\uff1a<\/td>\n		Range:<\/td>\n0 to 10 m<\/td>\n<\/tr>\n
Akurasi:<\/td>\n\u00b1 1%<\/td>\n<\/tr>\n
Resolution:<\/td>\n\u00a0\u00b1 2 mm<\/td>\n<\/tr>\n
Temperature\uff1a<\/td>\nRange:<\/td>\n0\u00b0C to 60\u00b0C<\/td>\n<\/tr>\n
Akurasi:<\/td>\n\u00b10.5\u00b0C<\/td>\n<\/tr>\n
Resolution:<\/td>\n0.1\u00b0C<\/td>\n<\/tr>\n
Electrical Conductivity (EC):<\/td>\nRange:<\/td>\n0 to 200,000 \u00b5S\/cm, Typically \u00b1 1% of measurement<\/td>\n<\/tr>\n
Resolution:<\/td>\n\u00b11 \u00b5S\/cm<\/td>\n<\/tr>\n
recorded as a 16-bit value (0 to 65,535 \u00b5S\/cm) or a 32-bit value (0 to 262,143 \u00b5S\/cm)<\/td>\n<\/tr>\n
Tilt
\n(accelerometer):<\/td>\n		Range:<\/td>\n\u00b170\u00b0 in roll and pitch axes.<\/td>\n<\/tr>\n
Akurasi:<\/td>\n\u00b11\u00b0 for angles less than 45\u00b0<\/td>\n<\/tr>\n
Output:<\/td>\nSDI-12:<\/td>\nSDI-12 v1.3, Max. cable 50m<\/td>\n<\/tr>\n
RS485:<\/td>\nModbus RTU, Max. cable 500m<\/td>\n<\/tr>\n
Environmental\uff1a<\/td>\nOperating temperature:<\/td>\n\u00a00\u2103 ~+60\u2103 water temperature<\/td>\n<\/tr>\n
Storage temperature:<\/td>\n\u00a0-20\u2103 ~+60\u2103<\/td>\n<\/tr>\n
IP class:<\/td>\nIP68<\/td>\n<\/tr>\n
Others\uff1a<\/td>\nCable:<\/td>\nThe standard cable is 15m, the maximum option is 500m.<\/td>\n<\/tr>\n
Sensor material:<\/td>\nEpoxy-sealed body, Marine Grade 316 Stainless Steel Mounting Bracket<\/td>\n<\/tr>\n
Sensor size:<\/td>\n135mm x 50mm x 20mm (L x W x H)<\/td>\n<\/tr>\n
Sensor weight:<\/td>\n1kg with 15m of cable<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Technical data of Flow calculator:<\/strong><\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Ketik:<\/td>\nPortable<\/td>\n<\/tr>\n
Catu daya:<\/td>\nCalculator:85-265 VAC (Charging battery)<\/td>\n<\/tr>\n
IP class:<\/td>\nCalculator: IP66<\/td>\n<\/tr>\n
Operating temperature:<\/td>\n\u00a00\u2103 ~+60\u2103<\/td>\n<\/tr>\n
Case material:<\/td>\nFiber Glass<\/td>\n<\/tr>\n
Display:<\/td>\n4.5\u201d color LCD<\/td>\n<\/tr>\n
Output:<\/td>\nPulse, 4-20mA\uff08Flow & Depth\uff09,RS485 (Modbus), Datalogger<\/td>\n<\/tr>\n
Size:<\/td>\n270L\u00d7215W\u00d7175H (mm)<\/td>\n<\/tr>\n
Weight:<\/td>\n2.4 kg<\/td>\n<\/tr>\n
Data storage:<\/td>\n16GB<\/td>\n<\/tr>\n
Application:<\/td>\nPartially Filled Pipe: 150-6000mm;\u00a0 \u00a0 Open Channel: width >200mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Diagram Instalasi:<\/strong><\/h5>\n

\"install<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Partially pipe\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Pipe with siltation on bottom\u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/span> \u00a0 <\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0<\/strong><\/p>\n

\"install<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Triangle Channel\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Rectangular channel<\/span><\/strong><\/p>\n

 <\/p>\n

\"install<\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Polygonal channel\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Irregular-shaped channel<\/span><\/strong><\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>","protected":false},"excerpt":{"rendered":"

Doppler Open Channel flow meter can be used to measure the liquid flow rate of the pipe which is partially filled with liquid.
\nPrinsip:<\/strong>\u00a0 Use Doppler frequency shift to measure the flow velocity, it is suitable for measuring the fluid which contains solid particles or bubbles, not suitable for measuring pure water.
\nApplication scope:<\/strong>\u00a0 City pipe network, underground sewage testing, sewage treatment plants, streams and rivers testing.<\/p>","protected":false},"featured_media":1280,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_cat":[75,1094],"product_tag":[],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hginstrument.com\/id\/wp-json\/wp\/v2\/product\/969"}],"collection":[{"href":"https:\/\/www.hginstrument.com\/id\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.hginstrument.com\/id\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hginstrument.com\/id\/wp-json\/wp\/v2\/comments?post=969"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hginstrument.com\/id\/wp-json\/wp\/v2\/media\/1280"}],"wp:attachment":[{"href":"https:\/\/www.hginstrument.com\/id\/wp-json\/wp\/v2\/media?parent=969"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.hginstrument.com\/id\/wp-json\/wp\/v2\/product_cat?post=969"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.hginstrument.com\/id\/wp-json\/wp\/v2\/product_tag?post=969"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}