Danfoss Flow Indicator Data sheet

Data Sheet

Flow Indicator - Measuring Device for Flow and
Pressure

Description

Application

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.

Find the presetting

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

The slide ruler has been developed for Danfoss
balancing valves.

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

▪

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

▪

▪

nd

Move 2
ferential 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.

ruler to the desired dif-

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).

▪

▪

▪

▪

▪

▪

st

Move 1

ruler to read presetting =

4
Read differential pressure on man-

ometer, e.g. 0.07 bar.

nd

Move 2

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.

Ordering

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

▪

Leno
ASV-I

▪

ASV-BD

▪

USV-I

▪

MSV-F2

▪

TM

Flow indicator suit case

Contents

Max static

pressure

Differen­tial pres-

sure

Differential pressure gauge & slide ruler.
2 pcs. of quick coupling sockets G1/4" with push in fitting nip­ple.
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.

Code no.

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

Data Sheet Flow Indicator - Measuring Device for Flow and Pressure

Type Code no.

Measuring needle with ball valve and push in
fitting elbows

Strap 003L8324
Slide ruler (LENOTM MSV-BD/B and ASV-BD)
Slide ruler (USV-I and ASV-I) 003L8321
Slide ruler (MSV-F2) 003L8320

003L8319

003L8262

Technical Data

How to Measure

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

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

Danfoss Heating Solutions VDE2D202 © Danfoss 06/2013 3

Open ball valves, first blue then

red

Close bypass and read pressure
and process with flow indicator