Danfoss Flow Indicator Data sheet

Data Sheet

Flow Indicator - Measuring Device for Flow and Pressure

Description

The flow indicator is a new simple measuring device for measuring flow and pressure in heating, cooling and domestic hot water systems.

The flow indicator consists of a differential pressure gauge and a slide ruler, which enables the pressure to be calculated into flow.

The slide ruler has been developed for Danfoss balancing valves.

The slide rulers can also help determine the presetting of balancing valves.

Application

Find the presetting

 

Given: LENOTM MSV-BD 15, desired flow 500l/h

 

Desired: Presetting

▪ Move 1st ruler to the desired flow e.g. 500 l/h or 10 kW.

▪ Move 2nd ruler to the desired differential pressure (∆p), e.g. 0.1 bar.

▪ Presetting can be read where the scale of LENOTM MSV-BD 15 is crossing the red line, in this example presetting = 4.

Danfoss Heating Solutions

VDE2D202

© Danfoss

06/2013

1

Data Sheet

Flow Indicator - Measuring Device for Flow and Pressure

 

 

Determine the flow

Find out the dimension of the installed LENOTM MSV-BD valve and read the actual presetting (here DN 15 and presetting 4).

▪ Move 1st ruler to read presetting = 4

▪ Read differential pressure on manometer, e.g. 0.07 bar.

▪ Move 2nd ruler to 0.07 bar, and read flow = 400 l/h

▪ To balance 500 l/h, change the presetting or regulate the differential pressure.

▪ Move 1st ruler to 500 l/h, and read new presetting = 4.5

▪ Or adjust the differential pressure at the pump.

The flow indicator can be used for manual balancing valves and partner valves for ASV:

LenoTM

ASV-I

ASV-BD

USV-I

MSV-F2

Ordering

Flow indicator suit case

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Max static

Differen-

 

 

Contents

pressure

tial pres-

Code no.

 

 

 

 

sure

 

 

Differential pressure gauge & slide ruler.

 

 

 

 

 

2 pcs. of quick coupling sockets G1/4" with push in fitting nip-

 

 

 

 

 

ple.

 

 

 

 

 

Blue measuring hose (1.5 meter/6 x 1mm).

10 bar

0-1 bar

003L8310

 

Red measuring hose (1.5 meter/6 x 1mm).

 

 

 

 

 

2 pcs. of measuring needles with ball valve and push in fitting

 

 

 

 

 

elbows.

 

 

 

 

 

 

 

 

 

 

 

 

Accessories

 

 

 

 

 

 

 

 

 

 

 

 

Type

 

 

 

Code no.

 

2 pcs. of quick coupling sockets G1/4" with

 

 

 

 

003L8315

 

push in fitting nipple

 

 

 

 

 

 

 

 

 

 

 

 

 

Measuring hoses, 2x1.5m

 

 

 

 

003L8261

 

 

 

 

 

 

 

2

VDE2D202

© Danfoss

06/2013

Danfoss Heating Solutions

Danfoss Flow Indicator Data sheet

Data Sheet

Flow Indicator - Measuring Device for Flow and Pressure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type

 

 

 

Code no.

 

Measuring needle with ball valve and push in

 

 

003L8262

 

fitting elbows

 

 

 

 

 

 

 

 

 

 

 

Strap

 

 

 

003L8324

 

 

 

 

 

 

Slide ruler (LENOTM MSV-BD/B and ASV-BD)

 

 

003L8319

 

Slide ruler (USV-I and ASV-I)

 

 

 

003L8321

 

 

 

 

 

 

 

Slide ruler (MSV-F2)

 

 

 

003L8320

Technical Data

 

 

 

 

 

 

 

 

 

Item

 

 

Value

 

Pressure range

 

 

0-1 bar

 

 

 

 

 

 

Max static pressure

 

 

10 bar

 

 

 

 

 

Reliability, linearity and hysteresis error

2.5%

 

 

 

 

 

 

 

Medium temperature

 

 

-5 to 150°C

 

 

 

 

 

 

Calibration

 

 

When pointer in wrong posi-

 

 

 

 

tion

How to Measure

 

 

 

 

 

Measure the differential pressure

 

 

 

 

 

1)

2)

 

3)

 

Make sure bypass is open

Fit connectors onto the hoses

Fit hoses to MSV-BD

4)

5)

6)

Fit hoses to manometer

Open ball valves, first blue then

red

 

Close bypass and read pressure and process with flow indicator

Danfoss Heating Solutions

VDE2D202

© Danfoss

06/2013

3

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