Grundfos DPI Manual de usuario
GRUNDFOS INSTRUCTIONS
DPI
Grundfos differential pressure sensor
Installation and operating instructions
2
Table of contents
3
DPI
Grundfos differential pressure sensor
English (GB)
Installation and operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Čeština (CZ)
Montážní a provozní návod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Deutsch (DE)
Montage- und Betriebsanleitung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Dansk (DK)
Monterings- og driftsinstruktion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Español (ES)
Instrucciones de instalación y funcionamiento . . . . . . . . . . . . . . . . . . . . . . . . 41
Français (FR)
Notice d'installation et de fonctionnement. . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Ελληνικά (GR)
Οδηγίες εγκατάστασης και λειτουργίας . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Magyar (HU)
Telepítési és üzemeltetési utasítás . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Italiano (IT)
Istruzioni di installazione e funzionamento . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Polski (PL)
Instrukcja montażu i eksploatacji. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Русский (RU)
Паспорт, Руководство по монтажу иэксплуатации . . . . . . . . . . . . . . . . . . 97
Declaration of conformity. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
English (GB)
4
English (GB) Installation and operating instructions
Original installation and operating instructions
CONTENTS
Page
1. Symbols used in this document 4
2. Delivery and handling 5
2.1 Delivery 5
2.2 Handling 5
3. Applications 5
4. Identification 6
4.1 Nameplate 6
5. Function 7
6. Installation 8
6.1 Extension of cable 9
6.2 Connection of amplifier 11
7. Technical data 12
7.1 Electrical data 12
7.2 Temperatures 12
7.3 Miscellaneous 12
8. Service 12
9. Disposal 12
10. Conversion tables 13
1. Symbols used in this document
Warning
Prior to installation, read these installation and operating
instructions. Installation and operation must comply with local
regulations and accepted codes of good practice.
Warning
If these safety instructions are not observed, it may result in
personal injury!
Caution
If these safety instructions are not observed, it may result in
malfunction or damage to the equipment!
Note
Notes or instructions that make the job easier and ensure safe
operation.
English (GB)
5
2. Delivery and handling
2.1 Delivery
Grundfos differential pressure sensor, type DPI, is supplied for direct
mounting with 7/16"-20 UNF connection. Miscellaneous accessories are
available on request.
2.2 Handling
Comply with local regulations and good practice for the handling of electronic
equipment.
3. Applications
Grundfos differential pressure sensor, type DPI, is used for measuring
differential pressure.
Caution
If the sensor is used in a manner not specified by the
manufacturer, the protection provided may be damaged.
Do not use Grundfos DPI sensors in explosive environments zone-
classified according to ATEX.
English (GB)
6
4. Identification
4.1 Nameplate
Fig. 1 Nameplate for DPI
Conversion of SI units into US units, see page 13.
TM03 3063 2206
Pos. Description
1 Pressure range
2 Output signal
3 Supply voltage
4 Temperature range of medium
5 Enclosure class
6 Max. differential pressure, P1 ->P2
7 Max. differential pressure, P2 ->P1
8 Max. system pressure
9 Connection P1, high pressure (discharge side)
10 Connection P2, low pressure (suction side)
11 12 - 30 V supply voltage
12 GND (earth lead)
13 Signal lead
14 Max. current consumption
15 Country of origin
16 Version no.
P2
P1
GRUNDFOS DIRECT SENSORS DPI
P: 0... +XX bar
IN 12-30 VDC, 37mA
OUT 4-20 mA
Psyst. max: 16 bar
Temp. -10 +70°C
P1-P2 max. 16 bar
P2-P1 max. 10 bar
96XXXXXX - xx - XXXX - xxxxx
IP55V-No: xx
LOW
HIGH
TM
Brown : +
Yellow : -
Green : out
10 3
1
8
4
6
7
916 12
5
11 13
14
152
US
C
DK
English (GB)
7
5. Function
The sensor measures the differential pressure between the high pressure
(P1) and the low pressure (P2). It may for example be the differential
pressure between the flanges on the suction and discharge side of a pump.
Fig. 2 DPI with position of P1 and P2
Connect the sensor to the pressure gauge tappings of the pump flanges or to
other measuring points in the system by means of 7/16"-20 UNF copper
capillary tubes.
The pressure measurement is carried out by a silicon chip covered with a
special coating developed by Grundfos.
The sensor signal is sent to an external controller or to a motor controller.
The sensor is supplied with power from an external voltage supply or direct
from the terminal box of the motor.
TM03 2058 3505
P2
P1
English (GB)
8
6. Installation
The sensor can be mounted direct on the side of the pump or on a wall by
means of the mounting bracket supplied.
Fig. 3 Connections of the DPI
The DPI cable has four leads:
TM03 2225 3905
1 12 - 30 V supply voltage Brown
2 GND (earth lead) Yellow
3 Signal lead Green
4Test lead (can be cut off during mounting). This
lead must not be connected to voltage supply. White
The DPI must be supplied with power via a PELV supply
(EN 60335-1) where GND is connected to protective earthing.
Furthermore, connect the mounting bracket and/or one or both
of the capillary tubes to earth.
English (GB)
9
6.1 Extension of cable
The DPI kit 2 enables the extension of the sensor cable to up to > 30 m.
If extension of the cable is required, always follow the guidelines below to
ensure optimum connection between sensor and controller. The six steps
below refer to fig. 4on page 10:
1. Remove the outer insulation 50 mm from each cable end. Pull the outer
screen away from the cable ends.
Shorten and strip the individual conductors as shown.
2. Cut 1 10 shrink-on sleeve and 4 3 shrink-on sleeves in lengths of
20 mm.
3. Place the shrink-on sleeves as shown in fig. 4. Solder together conductor
ends of the same colour.
4. Place the small shrink-on sleeves over the centre of each solder. Heat up
the shrink-on sleeves from the centre and outwards using a heat gun in
order to achieve the best result.
5. Hold the conductors close together and pull the outer screens over the
joint, one screen at a time.
6. Place the big shrink-on sleeve over the centre of the joint and shrink it
using the heat gun from the centre and outwards.
English (GB)
10
Fig. 4 How to join the cables
TM04 0571 0808
1.
2.
3.
4.
5.
6.
1 x 10 x 20 mm
4 x 3 x 20 mm
5
1120
50
All dimensions in mm
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