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JUMO flowTRANS US W01 Ultrasonic flowmeter DN 20 (3/4 in.)

Article number: 802156
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Product information "JUMO flowTRANS US W01 Ultrasonic flowmeter DN 20 (3/4 in.)"

Ultrasonic flow meter for DN 20 for stable and low-maintenance measurement of liquid flows in pipelines

JUMO flowTRANS US W01 Ultrasonic Flow Meter DN 20 (3/4")

In pipelines with medium nominal diameters, this flow meter enables reliable measurement of liquid flows under changing operating conditions. The ultrasonic technology operates without contact and delivers stable measurement values without being influenced by parameters such as pressure, temperature, or conductivity.

The volumetric flow rate is determined by evaluating signal transit times measured along and against the direction of flow. The difference between these transit times is used to calculate the flow velocity and convert it into a flow value. This makes the system suitable for both steady and dynamic flow conditions.

By eliminating mechanical components, the measuring point remains wear-free and requires minimal maintenance. For optimal results, the medium should have a homogeneous composition with only minimal gas or solid content.

Advantages

  • Reliable measurement under changing flow conditions
  • Independent of conductivity and other media properties
  • Suitable for continuous monitoring in piping systems
  • Low maintenance requirements during operation

Technical Data

  • Measuring principle: Ultrasonic transit-time difference method
  • Nominal diameter: DN 20 (3/4")
  • Measurement setup: Ultrasonic sensors with external evaluation unit
  • Measured variable: Volumetric flow rate
  • Installation condition: Homogeneous liquids with low gas and solid content

Typical Applications

  • Water distribution and supply systems
  • Technical systems in industrial environments
  • Process pipelines with varying flow rates
  • Building services and utility installations

Frequently Asked Questions

Yes, it detects even very low flow rates and provides stable readings.

Usually just a few minutes — no lengthy preparations are required.

No, the ultrasonic measurement takes place without any obstruction in the pipe.

In many cases, no readjustment is necessary — it works straight away.

Yes, whether hard or soft water — the measurement remains stable.

Yes, JUMO offers suitable mounting kits separately to make installation even easier and safer.

Dimensions

Height 11 cm
Length 18 cm
Width 11 cm

Weight

Weight 250 g

Other attributes

Country of origin DE
Customs tariff number 90261021
Technical data

JUMO

Part no.: 744932 Type:406050/000-0020-121-32-58-01-12/000

 

 

 

 

 

 

Installation type

Inline

 

 

Nominal diameter

DN 20

 

 

Nominal pressure

PN 16

 

 

Measuring accuracy

2 % of the measured value

 

 

Measuring range

0.6 to 210 l/min

 

 

Process connection

Male G-thread with integrated seal

 

 

Materials in contact with media

PPSU, PEEK, EPDM (FKM)

 

 

Maximum medium temperature

Up to 80 °C (up to 95 °C with lower accuracy)

 

 

Maximum ambient temperature

Up to 70 °C

 

 

Display

Status LED

 

 

Input and output

Digital output (up to 10 kHz); analogue output (4 to 20 mA, optionally 0 to 10 V)

 

 
   
   

Communication

   

Protection class

IP65/IP67

   

Power supply

DC 18 to 30 V, SELV/PELV

   

Additional measured variables

   

Special features

Metal-free plastic housing