DMDF-OP-A Sectional Filled Pipe Flow Meter

Series DMDF-OP-A flowmeter includes flow calculator, transmitter, speed converter and level transducer.

Features:

1. Excellent low flow measurement capability, low 0.05 m/s

2. Signal of automatic gain adjustment

3. Outstanding measuring accuracy

4. Complete in specifications and can provide a variety of applications

5. User-friendly configurations

6. 4-20mA and RS485/Modbus output, GPRS optional

7. It is very suitable for large pipe sewer metering

DMDF-OP-A Partially Filled Pipe Combined-type

Ultrasonic Flow Meter

The DMDF-OP-A Combined-Type Partially Filled Pipe Ultrasonic flowmeter is designed for partially filled pipe applications. It consists of flow calculator unit, velocity easurement unit and level measurement unit

Velocity measurement: DMDF-OP-A uses ultrasonic Transit-time or Doppler measurement

A method for measuring fluid velocity. Ultrasonic Transit time measurement method is applied for clean water and ultrasonic Doppler measurement method for dirty water is applied.

Level measurement: the level sensor uses a special small-scale and low ultrasonic level meter to measure the level of the dead zone. When installing the level meter, users need to fix a weld base and the height of the weld base is usually 80-100mm, so it can ensure high measurement accuracy.

Partially filled pipe flow formula: Q = V • A

where V - Pipe fluid velocity

A - pipe flow cross-sectional area

A fluid level and inside diameter is a function of a = f (D • h)

Where D - pipe inner diameter

h - Liquid level

Features

* Excellent low flow rate measurement capability

* Automatic gain adjustment signal

* 4-20mA, RS485 (Modbus) / GPRS and SD card logger outputs

* very suitable for large pipe waste metering

* Complete in specifications and can provide various applications

The DMDF-OP-A Combined Partially Filled Pipe Ultrasonic Flow Meter should be more than half full.

Flow Calculation Unit

Calculate the flow rate and take the level 4-20mA signal, and then calculate the partially full pipe flow. The speed is between the 4-20mA signal transmitter and the 4-20mA signal level sensor. Flow calculator, speed, level indicator can flow rate and flow

picker. It may also be available with 4-20 mA RS485 (Modbus) / GPRS and SD card logger outputs. Velocity Measurement Unit transmitter The transmitter receives the signal from the flow converters and their outputs. The 4-20mA velocity signal calculates the flow.

Flow Transducers

It includes two types of flow converter: Clamp-on and Insertion, both of them are hot-hit

Installation and Disassembly online.

When installing the insert flow transducer, the pipe cannot be welded directly, such as cement

pipe, ductile iron or other unweldable material too long, please notify manufacturer

Flow transducers (pipe thicknesses up to 110 mm) are shown below. In this case, it also needs to install a weldable (usually carbon steel) pulley shown below.

Level Measurement Unit

Level Sensor

The level sensor takes advantage of ultrasonic echo technology to receive level level signal and outputs 4-20mA flow to account. When installing the level meter, users need to fix a welding base, and the height of the welding base is usually 80-100mm, so it can ensure high measurement accuracy.

Flow Calculation

For open channel, only need the inlet width, a partially filled Pipe Flow metersThe flow calculator can set the calculation of the cross-sectional area of a partially filled pipe or open channel, for a circular pipe, only the inner diameter for the inlet Users also need inlet cross section up to 20 points The flow calculator can display the speed, level, coordinate the channel to calculate the flow rate and flow adder, and configured with 4-20mA and RS485/Modbus output, GPRS is optional transmitter

Flow calculator connected to two external 4 - 20mA inputs. Speed and level transmitter and level converter output 4 - 20mA analog signal.

Speed Converter

Includes two types of speed converter: Clamp - and Docking, they are both hot-hit installation and online disassembly.

Partially Full Pipe Flow meter

When installing the insertion transducer, the pipe cannot be welded directly, such as cement pipe, ductile iron or other unweldable material, please inform the manufacturer for extended transducers as shown below (pipe wall thickness can be up to 110mm). In this case, it will also need to install a weldable (usually carbon steel) hoop as shown below.

Partially Full Pipe Flow meter

Level Converter

Partly level transducer Pipe Flow metersThe measuring principle Filled :level transducer uses a special, small-scale ultrasonic level meter and low dead zone to measure the level. When installing the level meter, the user height weld base usually 80 ~ 100mm, need to fix a weld base, so it can ensure high measuring accuracy.