DI MPU01 Manual de usuario

825B122A

DI MPU01 Transit time ultrasonic lowmeter

Features

• Pipe dimension range: DN20 ÷ DN4000

• Transmitter protection class: IP66

•Transducer protection class: IP68

• Display: backlighted 2x20 alphanumeric digit

• Keypad: 4 keys

• Housing material: printing aluminium

• Displayed data: instantaneous owrate;

ow totalizer

• Mounting: wall

• Analog Output: Sel. 4÷20mA or 0÷20mA

• Accuracy: ±1%

• Repeatability: ±0,2%

• Linearity: ±0,5%

• Basic measurement period: 500ms

• Serial port: RS485

• Communication protocol: MODBUS RTU

or ASCII+ (opt.)

•Programmable frequency output: 0÷5000Hz

•Relay output: n.1 for pulse totalizer or alarm

• Medium speed range: ±12m/s

• Unit working temperature: -20÷60°C

• Instrumenthumidity: noncondensing85%RH(40°C)

• Sensors working temperature:

TS-2/TM-1/TL-1 -30 ÷ +90°C

TS-2 HT/TM-1HT -30 ÷ +160°C

TC1/TLC-2 -40 ÷ +160°C

• Sensor cable std. length: 5m

• Power s.: 230Vac or 10÷30Vdc (depending on model)

• Dimensions: 200x120x77mm

•Weight without sensors: 1Kg

Pag. 2 of 52

- Working principle

Where:

= sonic section angle

M = sonic section length

D = pipe internal diameter

T1 = sound transit time from the upstream transducer to the transducer downstream

T2 = sound transit time from the downstream transducer to the transducer upstream

∆T = Tup-Tdown

1. WORKING PRINCIPLE

The meter is designed to measure the uid velocity inside a pipe.

The clamp-on transducers models allow an easy installation.

The transit time ow meter uses two ultrasonic transducers that function as transmitters and receivers.

They are installed externally to the pipe at a specic distance from each other. They can be installed at Vmode (2

sonic section), at W mode (4 sonic section) or at Z mode (1 sonic section). The installation method choice depends

on the pipe and the uid characteristics. The instrument measures the transit time via the two transducers that

alternatively transmit and receive a sound pulses sequence. The difference in the measured transit time is directly

related to the uid velocity in the pipe, as shown in gure 1

Compact system for conductive and

non-conductive fluids, even with the

suspendedmaterialpresence(<10g/l;<Ø1mm)

Measuringrangesfrom<0,2m3/hto>30000m3/h

Applicable to various pipes mate-

rials (eg. SS316, copper, plastic,

etc.), with or without an inner lining

Power supply 85 ÷ 265Vac or 10÷30Vdc

The instrument is composed by a digital converter and two clamp-on or insertion type ultrasonic transducers.

The instrument calculates the instantaneous ow rate value by measuring the ight time difference of the ultrasonic

pulses.

Fig. 1

Pag. 3 of 52

- Features

2. FEATURES

Pipe

Material Carbon Steel; Stainless Steel; Cast Iron; Ductile Iron; Copper; PVC; Aluminium;

Asbestos; FiberGlass-Epoxy; Other

Pipe Ø range 20÷4000mm

Inner lining None, No Liner; Tar Epoxy; Rubber; Mortar; Polypropylene; Polystyrol; Polysty-

rene; Polyester; Polyethylene; Ebonite; Teon; Other

Pipe length Upstream pipe straight section of 10÷40D. Downstream pipe straight section

greater than 5D.

NB - The pipe straight section, downstream of a pump, must be greater than 20D.

Measured

uids

Kind Water (General); Sea Water; Kerosene; Gasoline; Fuel Oil; Crude Oil; Propane

(-45°C); Butane (0°C); Other Fluid; Diesel Oil; Castor Oil; Peanut Oil: Gasoline

#90; Gasoline #93; Alcohol; Water (125°C)

Suspended solids Homogeneous uids, even with material in suspension with a concentration less

than 20g/l and particle size less than 1mm.

NB - Avoid the ice formation inside the pipe at low temperatures

Temperature Depending on the used ultrasonic transducer model (see pages 4 and 5)

Flow velocity ±0,01m/s ÷ ±12m/s

Direction Direct and reverse ow rate measurement and separate totalization

Data

Converter

Unit

Accuracy ±1%

Working

conditions Temperature: -20°÷+85°C; humidity: 85% non-condensing (for applications in

conditions different from the standard, specify when ordering)

Analog output Opto-isolated with congurable mode: 4÷20mA; 0÷20mA; 0÷20mA Via RS232; 4÷20mA

vs Sound; 20÷4÷20mA; 0÷4÷20mA; 20÷0÷20mA; 4÷20mA vs vel.

Max. load: 1000ohm

OCT output

Passive opto-isolated: Vmax: 30Vdc; Imax 100mA

Alarm output or pulse output from ow totalizer with settable pulse width in

6÷1000ms range

Relay output N.1; Max. 125Vac 1A; 30Vdc 2A

Alarm output or pulse output from ow totalizer

Serial port RS485. Comunication protocol: MODBUS RTU; MODBUS ASCII

keyboard 4 keys

Display backlighted 2x20 alphanumeric digit LCD

Display data Simultaneous display of:: instantaneous ow rate (-99999.99÷+99999.99m3/h); ow to-

talizers (-19999999.99÷+19999999.99m3); total operating time displayable via

keyboard command

Data storage Flow Totalizer, total operating time and all system conguration parameters. Stor-

age on E2PROM

Power supply

(dependingonmodel) 230Vac ±15% 50÷60Hz; consumption: 3VA.

10÷30Vdc; consumption: 2W

Protection IP66; the transparent protective cover use is recommended (p.n. 546A103N)

Tab. 1

Pag. 4 of 52

- Transducers

3. TRANSDUCERS

Transducer Type Caratteristiche

TS-2

Dimensions

Pipe Ø range 20÷100mm (¾” ÷ 4”)

Temperature -30 ÷ +90°C

Menu 23 >19. Clamp-On TS-2

TS-2-HT

Dimensions

Pipe Ø range 20÷100mm (¾” ÷ 4”)

Temperature -30 ÷ +160°C

Menu 23 >19. Clamp-On TS-2

TM-1

Dimensions

Pipe Ø range 50÷700mm (2” ÷ 40”)

Temperature -30 ÷ +90°C

Menu 23 >16. Clamp-On TM-1

TM-1-HT

Dimensions

Pipe Ø range 50÷700mm (2” ÷ 40”)

Temperature -30 ÷ +160°C

Menu 23 >16. Clamp-On TM-1

Tab. 2

Pag. 5 of 52

- Transducers

Transducer Type Caratteristiche

TL-1

Dimensions

Pipe Ø range 300÷4000mm (3” ÷ 160”)

Temperature -30 ÷ +900°C

Menu 23 >20. Clamp-On TL-1

TC-1

(standard)

Dimensions

Pipe Ø range 80÷4000mm (3” ÷ 160”)

Temperature -40 ÷ +400°C

Max pressure 1.6Mpa (16bar)

Menu 23 >17. Insertion TC-1

TLC-2

(for

non-metallic

pipes)

Dimensions

Pipe Ø range 80÷4000mm (3” ÷ 160”)

Temperature -40 ÷ +400°C

Max pressure 1.6Mpa (16bar)

Menu 23 >21. Insertion TLC-2 Tab. 3

Pag. 6 of 52

- Dimensions/Electrical connections

5. ELECTRICAL CONNECTIONS

5.1 Connections

1) Separate the engine control cables or power cables from the DIMPU connection cables.

2) Remove the caps from the cable glands and open the cover by unscrewing the screws.

3) Lead the cables into the transmitter through the cable glands

4) Close the cap and tighten the cable glands

The immunity to electromagnetic interference is in accordance with directives

Fig. 2

Fig. 3

Pag. 7 of 52

- Electrical connections

5.3 POWER CONNECTION

5.3.1 Supply voltages in AC

5.2 Recommendations for external mounting

- or electrical connections, use a cable with a 6÷10mm outer diameter and fully tighten the M18 cable gland

- Securely close the cover

- position the cable so that it forms a downward curve at the M18 output (Fig.4); in this way the condensation and/or

rain water will tend to drop from the curve bottom

- place the transparent cover for protection

Fig. 5

Pag. 8 of 52

5.4 TRANSDUCER CONNECTION

- Electrical connections

5.3.2 Supply voltage in 10÷30Vdc

Fig. 6

Fig. 7

Pag. 9 of 52

- Electrical connections

5.5 OUTPUT SIGNALS CONNECTION

5.5.1 Analog output

5.5.2 Pulse output

Fig. 8

Fig. 9

Pag. 10 of 52

- Electrical connections

5.5.3 Relay output

5.5.3 MODBUS port

Fig. 10

Fig. 11

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