Kobold DRH Series Manuale utente

Operating Instructions

for

Rotating Vane Flow Meter

Model: DRH-...

DRH

page 2 DRH 01/0422

1. Contents

1. Contents ........................................................................................................ 2

2. Note .............................................................................................................. 3

3. Instrument Inspection .................................................................................... 3

4. Regulation Use ............................................................................................. 3

5. Operating Principle ........................................................................................ 4

6. Mechanical Connection ................................................................................. 4

6.1. Check service conditions: .................................................................... 4

6.2. Installation ............................................................................................ 4

7. Electrical Connection .................................................................................... 5

7.1. General ................................................................................................ 5

7.2. Output electronics: Frequency output (..F300;..F320, ..F340) ............. 5

7.3. Output electronics: Analogue output (..L303, ..L342, ..L343, ..L442) ... 6

7.4. Cable outlet with M12x1 angle plug electronic options F3x and L3x .... 7

7.5. Compact electronics: (..C30R, ..C30M, ..C34P, ..C34N) ..................... 8

8. Commissioning – Output electronics ............................................................. 9

8.1. General ................................................................................................ 9

8.2. Setting - compact electronics ............................................................... 9

9. Maintenance ................................................................................................. 9

10. Technical Information .................................................................................... 9

10.1. Sensor Data ......................................................................................... 9

10.2. Output electronics .............................................................................. 10

11. Order Codes ............................................................................................... 11

12. Dimensions ................................................................................................. 12

Manufactured and sold by: KOBOLD Instruments Inc.

1801 Parkway View Drive

Pittsburgh PA 15205-1422

Tel.: 412-788-2830

Fax: 412-788-4980

E-Mail: [email protected]

Internet: www.koboldusa.com

DRH

DRH 01/0422 page 3

2. Note

Please read these operating instructions before unpacking and putting the unit

into operation. Follow the instructions precisely as described herein.

The instruction manuals on our website www.koboldusa.com are always for

currently manufactured version of our products. Due to technical changes, the

instruction manuals available online may not always correspond to the product

version you have purchased. If you need an instruction manual that

corresponds to the purchased product version, you can request it from us

free of charge by email (info.@koboldusa.com) in PDF format, specifying the

relevant invoice number and serial number. If you wish, the operating

instructions can also be sent to you by post in paper form against an applicable

postage fee.

The devices are only to be used, maintained and serviced by persons familiar

with these operating instructions and in accordance with local regulations

applying to Health & Safety and prevention of accidents.

When used in machinery, the flow meter should only be placed in operation if the

machine in use complies with the EEC machinery guidelines.

According to PED guideline 2014/68/EU

No CE marking, see Article 4, Section 3 "Sound engineering practice", Guideline

2014/68/EU

Diagram 8, Piping systems, Group 1 Hazardous fluids

3. Instrument Inspection

Instruments are inspected before shipping and sent away in perfect condition.

Should damage to a device be visible, we recommend a thorough inspection of

the delivery packaging. In case of damage, please inform your parcel service/

forwarding agent immediately, since they are responsible for damages during

transit.

Scope of delivery:

The standard delivery includes:

Rotating Vane Flow Meter model: DRH-...

4. Regulation Use

Any use of the DRH which exceeds the manufactures specification may invalidate

its warranty. Therefore, any resulting damage is not the responsibility of the

manufacturer. The user assumes all risk for such usage.

DRH

page 4 DRH 01/0422

5. Operating Principle

KOBOLD Rotating Vane Flow Meters series DRH are used for measuring and

monitoring low viscous liquids.

Series DRH flow meters are working according the well-known rotating vane

principle. A magnet fitted in the vane and hermetically sealed from the medium

transfers non-contacting the rotary motion to a Hall-effect sensor mounted in the

housing. The sensor converts the rotary motion which is proportional to the flow

to a frequency signal. A series-connected electronics unit converts the signal to

an analogue output, limit contacts or display.

These devices can be adapted to prevailing plant conditions with the 360°

rotatable screw connections.

6. Mechanical Connection

6.1. Check service conditions:

Flow rate

Maximum operating pressures

Maximum operating temperature

Attention! Overrange can cause damage to bearings and cause

major measuring errors.

6.2. Installation

It must be ensured that the instrument housing is continuously filled with the

flow medium, especially for flows from top to bottom. No straight lengths are

necessary at inlet and outlet connections.

Check that flow is in the direction of the arrow on the front of the unit, and that

the face of the unit is aligned in the vertical plane (axle in horizontal plane)

Avoid pressure and tensile loads

Mechanically secure the inlet and outlet lines 50 mm from the connection

Check connections for leaks.

DRH

DRH 01/0422 page 5

7. Electrical Connection

7.1. General

Attention! Make sure that the voltages in your plant correspond

with the flow meter voltages.

Make sure that all electrical supply lines are de-energised.

Connect supply voltage and output signal to the plug connector pins as shown

below.

We recommend a power supply cable with diameter 0.25 mm².

Attention! The instrument electronics may be damaged if the cable

connections are assigned incorrectly.

7.2. Output electronics: Frequency output (..F300;..F320, ..F340)

+Vs

Signal

Out

n.c.

GND

DRH

page 6 DRH 01/0422

7.3. Output electronics: Analogue output (..L303, ..L342, ..L343,

..L442)

3-wire (..L303, ..L343)

2-wire (..L342)

S+

S-

n.c.

+Vs

GND

+Vs

Signal

Out

n.c.

GND

+Vs

GND

DRH

DRH 01/0422 page 7

2-wire, DIN plug connector (..L442)

7.4. Cable outlet with M12x1 angle plug electronic options F3x

and L3x

When using a pre-assembled M12x1 connection cable with angled plug, the

cable outlet is always aligned opposite to the flow direction.

+Vs

GND

S+

S-

PE n.c.

DRH

page 8 DRH 01/0422

7.5. Compact electronics: (..C30R, ..C30M, ..C34P, ..C34N)

7.5.1. General

Attention! Make sure that the voltages in your plant correspond

with the flow meter voltages.

Make sure that all electrical supply lines are de-energised.

Connect supply voltage and output signal to the plug connector pins as shown

below.

We recommend a power supply cable with diameter 0.25 mm².

Attention! The instrument electronics may be damaged if the cable

connections are assigned incorrectly.

7.5.2. Compact electronics: (..C30R, ..C30M)

7.5.3. Compact electronics: (..C34P, ..C34N)

The clamps 3 and 5 are short-circuited and can therefore be used optional for the

output signal or power supply.

DRH

DRH 01/0422 page 9

8. Commissioning – Output electronics

8.1. General

The measuring instruments are preset and are ready for operation after electrical

connection.

8.2. Setting - compact electronics

See

Operating instructions supplement

for compact electronics with frequency output

9. Maintenance

If the medium to be measured is clean, the Model DRH is virtually maintenance-

free. It is particularly important to guard against contamination by ferritic (iron

metal) contaminants. These can be eliminated by using e.g. the KOBOLD

magnetic filter, model MFR.

However, if the sensor must be cleaned, it can be opened to gain access to the

internal parts. Make sure that the sensor and, especially, the blades are not

damaged during this procedure. When re-assembling, be certain that the vane is

carefully positioned and oriented correctly.

Work on the sensor and electronics should only be carried out by the

manufacturer, otherwise the guarantee is nullified.

Material

Combinations DRH-11 DRH-12 DRH-14 DRH-15 DRH-17 DRH-18 DRH-19

Housing Brass Brass 316L SS 316L SS POM POM PVDF

Housing Cover Acrylic Brass Acrylic 316L SS Acrylic POM PVDF

O-ring NBR NBR FKM FKM NBR NBR FKM

Paddle PTFE PTFE PTFE PTFE PTFE PTFE PTFE

Axle Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic Ceramic

Axle Support PTFE PTFE PTFE PTFE PTFE PTFE PTFE

Max. Temperature 176 °F 176 °F 176 °F 176 °F 176 °F 176 °F 176 °F

Max. Pressure 230 PSIG 580 PSIG 230 PSIG 580 PSIG 230 PSIG 230 PSIG 230 PSIG

Weight (3/8") 1.87 LB 2.20 LB 1.98 LB 2.31 LB 0.55 LB 0.55 LB 0.66 LB

Weight (1") 3.53 LB 4.41 LB 3.53 LB 4.41 LB 0.88 LB 0.88 LB 1.10 LB

Material Combinations

10. Technical Information

10.1. Sensor Data

±2.5 % f. s.

±5% f. s. (DRH-...F300)

plug connector DIN 43 650,

plug connector M12x1, cable

max. 1 bar at max. range

IP 65

Linearity:

Electrical connection:

Pressure loss:

Protection:

DRH

DRH 01/0422

page 10

10.2. Output electronics

Frequency output (…F300)*

Power supply: 12-28 VDC

Power consumption: 10 mA

Pulse output: PNP, open collector, max. 25 mA

Electrical connection: plug connector M12x1

* uncalibrated signal output

Frequency output with frequency divider

Power supply: 24 VDC ±20%

Power consumption: 15 mA

Pulse output: PNP, open collector, max. 25 mA

Electrical connection: plug connector M12x1

Division ratio: 1...1/128, factory setting

Analogue output (plug-on display option)

Power supply: 24 VDC ±20%

Output: 0-20 mA or 4-20 mA, 2-wire or 3-wire

Max. load: 500 Ω.

Electrical connection: plug connector M12x1 or DIN 43 650

Option: plug-on display (with plug connector DIN 43 650

and output 4-20 mA only), 2-wire

Compact electronics

Display: 3-segment LED

Analogue output: (0)4 -20 mA adjustable, max. 500 Ω

Switching outputs: 1 (2) semiconductor PNP or NPN, factory set

Contact operation: N/C / N/O contact frequency programmable

Setting: with 2 buttons

Supply: 24 VDC ±20%, 3-wire technology,

approx. 100 mA

Electrical connection: plug connector M12x1

DRH-...Exxx (Counter electronics)

Display: LCD, 2x8 digits, illuminated

Total, part and flow quantities,

units selectable

Quantity meter: 8 digit

Analogue output: (0)4...20 mA adjustable

Load: max. 500 Ω

Switching output: 2 relays, max. 30 VAC/DC/2 A/60 VA

Settings: via 4 buttons

Functions: Reset, MIN/MAX memory, flow monitor,

monitoring for part and total quantity, language

Power supply: 24 VDC ± 20%, 3-wire

Power consumption: approx. 150 mA

Electrical connections: cable connection or M12 plug

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