Danfoss SONO 1500 CT Operating instructions

Brand: Danfoss

Model: SONO 1500 CT

Type: Operating instructions

Danfoss District Energy VI.SH.K1.02 DEN-SMT/PL

Instruction

1.0 Table of contents

SONO 1500 CT

Ultrasonic ow sensor

2.0 Safety notes and product information

1.0 Table of contents ......................................................................................................................................................................................................................................................................... 1

2.0 Safety notes and product information ........................................................................................................................................................................................................................1

3.0 Installation of ow sensor ..................................................................................................................................................................................................................................................... 2

4.0 Power supply .................................................................................................................................................................................................................................................................................. 3

5.0 Connection diagram ................................................................................................................................................................................................................................................................. 3

6.0 Wiring energy calculator type INFOCAL 8 ................................................................................................................................................................................................................. 4

7.0 Start-up operation ......................................................................................................................................................................................................................................................................4

8.0 Communication ...........................................................................................................................................................................................................................................................................4

Following instructions refer to the ultrasonic ow sensor.

The regulations on the use of energy meters must be observed! The

meter installation is only to be performed by an installation and/

or electrical contractor using personnel trained in the installation

and use of electrical equipment and familiar with the Low Voltage

Directive.

- Medium: water, as per AGFW Instruction Sheet FW510.If water

additives are used (e.g. corrosion protection), the user must

make sure that the corrosion resistance is adequate.

- The specied medium temperature

is 5 ... 90°C/105°C/130°C(150°C)

- The temperature range depends on variant and nominal size

- The exact temperature range is shown on the type plate

- The sealed variant is to be used if condensation is expected

- The specied operating/ambient conditions are:

5…55 °C; max. 93% rel. humidity

- IP54 (heating) / IP65 (cooling, heat/cooling)

- Ambient temperatures below 35 °C ensures typical battery

lifetime

This installation guide is intended for trained personnel and

does not contain any basic working steps.

If the ow sensor is insulated with the pipeline,

the calculator must be accessible.

Safety Note

The seal on the ow sensor must not be damaged!

A damaged seal will result in immediate invalidation

of the factory warranty and verication.

The relevant ESD regulations (electrostatic discharge)must be

observed.

No liability is accepted for damage (especially to electronic circuits)

resulting from failure to comply with the ESD regulations.

Instruction SONO 1500 CT

DEN-SMT/PL VI.SH.K1.02 Danfoss District Enrgy

Depending on the application (heat or cooling meter), the ow sen-

sor is installed in the forward or return pipe of the system. The ow

sensor must be installed so that the direction of ow corresponds

to the direction of the arrow on the sensor. Calming sections are not

needed before or after the energy meter, but calming sections of

3xDN are recommended before the meter.

The ow sensor can be installed in both horizontal and vertical pipe

sections, but every time so that air bubbles cannot collect in the ow

sensor.

The ow sensor must always be lled with water. Avoid frost on the

meter.

We recommend installing the ow sensor in a tilted (45°) position.

The minimum system pressure must be 1 bar to avoid cavitation.

Make sure the ow sensor is installed suciently far away from

possible sources of electromagnetic interference (switches, electric

motors, uorescent lamps, etc...).

To simplify the removal of the ow sensor it is recommended to

install isolating valves before and after the meter.

The ow sensor should be installed in an accessible position for

service and operating personnel.

Initial operation is to be carried out and recorded after installation.

Use unsealed ow sensors (Flow sensor for heating):

- at water temperatures permanently above ambient temperatures

Use sealed ow sensors (Flow sensor for cooling):

- for cold applications or T

water

< T

ambient

- if permanent condensation is expected

3.0 Installation of ow sensor

5 ... 130 / 150 °C *

5 ... 105 °C **

5 ... 130 °C *

5 ... 90 °C **

* External supply

** With battery supply

Instruction SONO 1500 CT

4.0 Power supply

SONO 1500 CT can be powered from lithium battery (11 years life-

time) or from external voltage supply (standard).

Battery

3.0 V DC lithium battery with 11 years of battery lifetime is tted

in ow sensor. The battery is not to be charged, replaced or short-

circuited. Ambient temperatures below 35°C ensure the typical life

of the battery. A battery powered version of SONO 1500 CT allows

medium temperature up to 90°C.

External supply (e.g. via calculator)

- Power supply: 3.0 ... 5.5 VDC

- Power consumption < 100 mAh per year

- Pulse current < 10 mA

Caution

Used batteries must be disposed of at suitable waste collection

points.

Risk of explosion if battery is replaced by an incorrect type.

5.0 Connection diagram

Depending on SONO 1500 CT variant connect 4 color coded wires

as shown below:

External power supply 3.0 – 5.5V:

Battery operation:

Galvanically isolated useful pulse:

Danfoss District Energy VI.SH.K1.02 DEN-SMT/PL

Instruction SONO 1500 CT

VI.SH.K1.02

6.0 Wiring energy calculator type INFOCAL 8

Once the ow sensor has been installed, the component must be

sealed and taken into operation.

Bleed the system until the measurements are steady.

7.0 Start-up operation

blue

white

brown

SONO 1500 CT INFOCAL 8

terminal

Vcc (brown)* 9 (+)

Pulse (white) 10

GND (blue) 11 (−)

* Connect only if SONO 1500 CT with external supply

8.0 Communication

The ow sensor has two outputs for connection to a heat meter.

- Useful pulse

- Test pulse (high resolution for testing laboratories)

The electrical data of the useful pulse are dened as:

Designation Value

External power supply UC < 30 V

Output current

< 20 mA with a residual

voltage of < 0.5 V

Open Collector (Drain)

Cable length to the

partial unit energy meter

< 10 m

Output frequency battery supplied < 20 Hz

Output frequency with

external power supply

< 150 Hz

Useful pulse value

10 ml ... 5000 l (dependent

on the rated value and

power supply)

Pulse duration

1  250 ms ± 10 %; Pulse

duration < Pulse pause

Potential-free contact (optional)

Danfoss SONO 1500 CT Operating instructions

Danfoss SONO 1500 CT Operating instructions

Danfoss SONO 1500 CT Operating instructions

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