Pkp Dp05 User manual

Instruction Manual

DP05 / DP06

Paddle bellows flow switch / meter

PKP Prozessmesstechnik GmbH

Borsigstraße 24

D-65205 Wiesbaden- ordenstadt

Tel.: ++49-(0)6122-7055-0

Fax: ++49-(0)6122-7055-50

Email: info@pkp.de

Table of Contents

Safety Information..................................................................................................................2

Measuring Principal / Function..............................................................................................3

Mounting.................................................................................................................................3

Process connection................................................................................................................4

Electrical Connection.............................................................................................................6

Calibration dates....................................................................................................................6

Switch-point............................................................................................................................6

Maintenance...........................................................................................................................7

Safety Information

General Instructions

To ensure safe operation, the device should only be operated according to the

specifications in the instruction manual. The requisite Health & Safety regulations for a

given application must also be observed. This statement also applies to the use of

accessories.

Every person who is commissioned with the initiation or operation of this device must have

read and understood the operating instructions and in particular the safety instructions!

The work safety instructions in this manual as well as the safety, accident prevention and

environmental protection regulations generally valid for the work area must be observed.

The liability of the manufacturer expires in the event of damage due to improper use, non-

observance of this operating manual, use of insufficiently qualified personnel and

unauthorized modification of the device.

Pro er Usage

The flow switches / meters DP05 and DP06 are designed to monitor continuous flow rates

of liquids which do not attack the device materials. All other usage is regarded as being

improper and outside the scope of the device.

In particular, applications in which shock loads occur (for example, pulsed operation)

should be discussed and checked in advance with our technical staff.

The series DP05 and DP06 flow meter devices should not be deployed as the sole agents

to prevent dangerous conditions occurring in plant or machinery. Machinery and plant

need to be designed in such a manner that faulty conditions and malfunctions do not arise

that could pose a safety risk for operators.

Dangerous substances

For dangerous media such as e.g. Oxygen, Acetylene, flammable or toxic substances as

well as refrigeration systems, compressors, etc. must comply with the relevant regulations

beyond the general rules.

DP05 / DP06 Instruction manual 07/2020 page 2

Qualified Personnel

The DP05 and DP06 devices may only be installed by trained, qualified personnel who are

able to mount the devices correctly. Qualified personnel are persons, who are familiar with

assembling, installation, placing in service and operating these devices and who are

suitably trained and qualified.

Inward Monitoring

Please check directly after delivery the device for any transport damages and deficiencies.

Additional with reference to the accompanying delivery note the number of parts must be

checked.

Claims for replacement or goods which relate to transport damage can only be considered

valid if the delivery company is notified without delay.

Measuring Princi al / Function

The Flow-Switches and Flow-Meters of types DP05

and DP06 work on the principle of dynamic

pressure.

The flow medium works against a target plate (4),

which causes the system to swing against a tension

spring (1).

A bellows system made from stainless steel (3)

seals the indicator and switch equipment against the

flowing liquid. Connection between the target plate

and the evaluating system is made by a lever arm.

A microswitch (2) is actuated whenever the

preselected low or high flow switch-points are

passed.

Depending from type additionally a control-lamp and

a indication system for the actual flow will be

actuated.

DP05 / DP06 Instruction manual 07/2020 page 3

Mounting

Mounting orientation

The Flow-Switches and Flow-Meters DP05 and DP06 are designed to be installed directly

in a pipe system. Make sure that the instruments are installed according the information

on the type plate. The flow-direction correlates to the direction of the pipe. Inaccuracy of

the instrument will result from incorrect mounting.

Flow direction

It is essential that the unit is mounted so that flow is as indicated by the arrow on the body.

The unit will not

operate unless installed correctly in this way.

Position of mounting

The following points must be observed:

•To avoid damages at the measuring system it is especially important to have the

biggest possible distance from magnet valves and ball valves. If it is not possible to

have a big distance, the valves have to be installed after the instruments. To avoid

pressure shocks it is very important to open the valves slowly.

•It is advantageous to install the unit in a straight piece of pipe and to choose a

place of mounting which has the biggest possible distance from elbows, valves etc.

•In order to have an accurate function of the device we recommend a straight length

of 10 x d at input side and 5 x d at the output side (d= internal diameter of pipe)

DP05 / DP06 Instruction manual 07/2020 page 4

Process connection

Thread connection

We recommend sealing all threads with PTFE sealing tape. Ensure no excess of tape is

left protruding into the pipe.

Flange connection

A approved flange seal or gasket must be used. either this nor the required fixing bolts

are included in the delivery.

Welded socket

The complete flange with screws

and sealing is delivered with the

instrument.

The distance 60 mm has to be

kept exactly, because this directly

affects the calibration of the

instrument.

Drill a ridge less hole in the pipe

and weld on the socket.

Use the enclosed sealing.

Please keep the flow direction in

consideration during mounting

procedure (arrow).

The pipe must be free from

pollution.

DP05 / DP06 Instruction manual 07/2020 page 5

Electrical connection

•Removing the enclosure to gain access to the four polar connector block.

•Additionally to the micro-switch a control lamp is installed. This lamp is for optical

control of switch status of the micro-switch.

•The current which is necessary for the lamp is indicated at the label.

•The max. switching performance is up to 230 V / 10 A AC.

•Please connect the device to ground with help of the screw near cable entry .

Cable ty e to be used

The connection cable to be used must correspond to the required electrical connection

power (max 230 V, 10 A AC). In addition, the prevailing stresses (temperature, mechanical

stress, chemical influences) must be taken into consideration when selecting the cable.

Circuit diagram

Calibration dates

Calibration dates, type of device and serial number are indicated at the label. Changes of

medium, pressure and position of mounting will influence accuracy.

DP05 / DP06 Instruction manual 07/2020 page 6

Switch- oint

DP05, DP06:

Alternations of the switchpoint can be made by the customer within the limits indicated on

the scale.

DP06:

The actual flow is indicated at front side of the unit.

Maintenance

The flow switches and meters DP05 and DP06 are almost maintenance-free. In case of

mal-function first of all check the pipe system for calcification or other obstruction.

For cleaning do not use sharp-edged tools. Damaged instruments can only be repaired in

our factory, because they have to be re-calibrated.

Damaged items should send back to the manufacturer because it is only there possible to

do the recalibration which is necessary.

Unscrewing screws, changing tension spring or bellow system changes calibration and will

invalidate the guarantee.

DP05 / DP06 Instruction manual 07/2020 page 7

Flow Measurement and Monitoring

DP05

Paddle-Bellows Flow Switch

with Variable Switching Point

•for liquids

•easy switching- oint adjustment with

small scale

•bellows kee liquid

hermetically se arated from

the switching element

•insensitive to

dirty / contaminated fluids

•high electrical loading ca acity

through use of 1 or 2 inde endently

adjustable microswitches

•insensitive to

electromagnetic fields

•easy installation, for

i ing u to DN 600

•o tical switching dis lay

by signal lam

Description:

The flow switches model DP05 operates according to the

paddle-bellows principle. The flowing liquid pushes against

the surface area of a paddle mounted at the end of a pivoting

arm. The arm is deflected against the force of a spring. This

deflection is mechanically transmitted to an adjustable contact

unit. bellow systems seals the mechanism hermetically from

the liquid.

In case of malfunction, the spring returns the paddle plate to

the zero position (no flow), which causes the system to signal

a fault automatically.

Typical applications:

The DP05 paddle-bellows flow switch is suitable for

monitoring thin and low-viscosity liquids in average to large

flow volumes, eg. for industrial water circuits because they are

relatively insensitive to dirty/contaminated fluids. For nominal

pipe sizes over DN 50, installation with a special intermediate

mounting flange yields a price/performance ratio of

exceptional economy.

PKP Prozessmesstechnik GmbH

Borsigstr. 24 • D-65205 Wiesbaden

S +49 (0) 6122-7055-0 • T +49 (0) 6122 7055-50

[email protected] • www.pkp.de

20181114

Models:

Each of the 3 types of DP05 flow switches are available

in 3 material combinations:

DP05.R… with T-fitting and pipe-thread connection

from R 3/8 to R 2 male thread

DP05.F: with T-fitting and DIN flange

from DN 10 to DN 50

aterial- T-fitting made of brass

combination A pivoting system made of brass