Ultrasonic Flowmeter UMI 880 Dostmann Electronic 5020-08801

Key Features:

• Measured parameters: Flow velocity, volume flow and volume
• Measuring range: 0.01 to ±32 m/second
• Precision:
  • For diameter >50 mm: ±1.5% of the value
  • For diameter <50 mm: ±3.5% of the value
• Resolution: 0.001 m/s
• Reproducibility: ±0.5% of the value
• Working temperature: -30 to +160°C
• Piping dimensions for the included sensor (Sensor S1): Ø 20 to 108 mm
• Optional sensors:
  • Sensor L1: For pipes from Ø 315 to 6000 mm
  • Sensor M1: For tubes from Ø 57 to 720 mm
  • SR1 sensor in gutter: For pipes from Ø 20 to 108 mm
  • MR1 sensor in gutter: For pipes between Ø 57 and 720 mm
• Includes datalogger function
• Memory capacity 32 GB
• Includes 5 meter connection cables between sensors and flowmeter
• Fluid: All fluids with impurities less than 5%
• Easy to assemble
• Installation without process interruption
• No pressure loss
• Includes accessories in a sturdy carrying case

Description:

With an accuracy of ±1.5% full scale. for a tube diameter of DN ≥50, and an accuracy of ±3.5% full scale for a tube diameter of DN <50 and a reproducibility of ±0.5% full scale. The 5020-08801 ultrasonic flow meter is a particularly accurate measuring device.

This equipment with an automatic wizard to install the ultrasonic flow meter sensors. This automatic installation wizard graphically displays the signal quality of the ultrasonic flow meter. Furthermore, it is graphically displayed whether the ultrasonic flow meter sensors are positioned at the correct distance from each other. To perform flow measurements with the ultrasonic flowmeter, the flow velocity, volumetric flow rate and volume are displayed after entering the specifications of the tube and medium to be measured. The ultrasonic flowmeter displays measured values in a wide range of units.

Available sensors:

Sensor type / order code:	Sensor UMI 880 S1 (Included)	Sensor UMI 880 M1	Sensor UMI 880 SR1	Sensor UMI 880 MR1	Sensor UMI 880 L1
Sensor pictures:
Sensor cable length:	5 m approx. 197 in	5 m approx. 197 in	5 m approx. 197 in	5 m approx. 197 in	5 m approx. 197 in
Nominal diameter:	DN 15 to 100 20 to 108 mm approx. 3/4 to 4 in	DN 50 to 700 57 to 720 mm approx. 2 to 28 in	DN 15 to 100 20 to 108 mm approx. 3/4 to 4 in	DN 50 to 700 57 to 720 mm approx. 2 to 28 in	DN 300 to 6000 315 to 6000 mm approx. 12.40 to 236.22 in
Liquid temperature:	-30 até 160 °C -22 to 320 °F	-30 até 160 °C -22 to 320 °F	-30 até 160 °C -22 to 320 °F	-30 até 160 °C -22 to 320 °F	-30 até 160 °C -22 to 320 °F
Dimensions:	45 x 30 x 30 mm 1.7 x 1.1 x 1.1 in	70 x 40 x 40 mm 2.8 x 1.6 x 1.6 in	200 x 25 x 25 mm 7.9 x 1.0 x 1.0 in	280 x 40 x 40 mm 11.0 x 1.6 x 1.6 in	91 x 52 x 44 mm 3.58 x 2.05 x 1.73
Weight:	75 gramas/ 0.16 lb	260 gramas/ 0.57 lb	250 gramas/ 0.55 lb	1080 gramas/2.38 lb	530 gramas/1.17 lb

Possible measuring methods:

The sensors can be mounted according to four different measurement methods presented below:

1. Upstream sensor, 2. Sensor distance, 3. Downstream sensor, 4. Flow direction

The more frequently the sound crosses the liquid, the more accurately even very small flow
velocities can be measured. However, the signal strength decreases with each crossing, which is
why the W and N method cannot be used for every pipe, for example.
It is recommended to use the V method if the pipe parameters allow it as this produces the best
results in terms of signal quality and zero point stability. However, if the signal quality is too low,
the Z method can be used.

Units
This menu "Units" allows you to set the units of all measured parameters. The following chart shows the
available units:

Delivery contents

• 1 x ultrasonic flow meter
• 2 x flow sensor (depending on the model)
• 2 x temperature sensor 6040-0880 (UMI 880 Pro models only)
• 2 x 5 m connection cable
• 2 x Velcro cable tie
• 1 x mains adaptor
• 1 x USB-C cable
• 1 x ultrasonic coupling gel
• 1 x tape measure
• 1 x plastic carrying case
• 1 x user manual

Material of the pipe

Selection of standard materials or custom entry of the transversal sound velocity

Medium

The Medium menu allows you to select one of the standard media or to enter the sound velocity
and kinematic viscosity of a user-defined medium. The following standard media are available:

• Water
• Sea water
• Oil
• Crude oil
• Methanol
• Ethanol
• Diesel
• Gasoline
• Petroleum

A user-defined medium is selected by entering the sound velocity and the kinematic viscosity of
the medium.

Kinematic viscosity is the relationship between dynamic viscosity and density - the quantity where there is no force involved. Kinematic viscosity can be obtained by dividing the absolute viscosity of a fluid with its mass density.