BD Sensors DMD 331 Instrukcja obsługi - Strona 2

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3.7 Installation steps for G 1/8" internal thread (DMD 341)

- Seal the pressure ports of the differential pressure

transmitter in a way that is suitable for your application.

(seals are not included in the scope of delivery)

- Screw the fittings into the threads as far as possible

- Tighten the fittings properly (max. 10 Nm).

3.8 Installation steps for tube nozzle ∅ ∅ ∅ ∅ 6.6x11 (DMD 341)

- Slip your flexible tubes (∅ 6 mm) onto the tube nozzles

as far as possible.

4. Electrical installation

U U U U

WARNING! Install the device only when depressurized

and currentless!

Establish the electrical connection of the device according to

the technical data shown on the manufacturing label, the

following table and the respective wiring diagram.

Pin configuration

Wiring diagrams

2-wire-system (current)

supply +

supply –

3-wire-system (current/supply)

supply +

supply –

A / V

I/U

signal +

For a device with ISO 4400 plug and cable socket, you

have to make sure that the external diameter of the

used cable is within the allowed clamping range.

Moreover you have to ensure that it lies in the cable

gland firmly and cleftlessly! To ensure the ingress

protection mentioned in the data sheet, the socket has

to be mounted properly. Please check if the delivered

seal is placed between plug and cable socket. After

connecting the cable fasten the cable socket on the

device by using the screw.

For the electrical connection a shielded and twisted

multicore cable is recommended.

5. Initial start-up

Please note that for starting up, the device has to be

stressed by pressure simultaneously at both pressure ports.

Otherwise the sensor could be damaged. For one-sided

pressure admission, the permissible static pressure (one-

sided) must be attended. Please take this out of the current

data sheet.

U U U U

WARNING! Before start-up, the user has to check for

proper installation and for any visible defects.

U U U U

WARNING! The device can be started and operated by

authorized personnel only, who have read and under-

stood the operating manual!

U U U U

WARNING! The device has to be used within the

technical specifications, only (compare the data in the

data sheet)!

6. Placing out of service

U U U U

WARNING! When dismantling the device, it must

always be done in the depressurized and currentless

condition! Check also if the medium has to be drained

off before dismantling!

U U U U

WARNING! Depending on the medium, it may cause

danger for the user. Comply therefore with adequate

precautions for purification.

7. Maintenance

In principle, this device is maintenance-free. If desired, the

housing of the device can be cleaned when switched of

using a damp cloth and non-aggressive cleaning solutions.

Depending on the measuring medium, however, the dia-

phragm may be polluted or coated with deposit. If the

medium is known for such tendencies, the user has to set

appropriate cleaning intervals. If necessary, it is recom-

mended to send the device to BD SENSORS for cleaning.

Please read therefore the chapter "Service/Repair" below.

An incorrect cleaning can cause irreparable damages

on diaphragm. Never use spiky objects or pressured air

for cleaning the diaphragm.

8. Service / Repair

8.1 Recalibration

During the life-time of a transmitter, the value of offset and

span may shift. As a consequence, a deviating signal value

in reference to the nominal pressure range starting point or

end point may be transmitted. If one of these two phenom-

ena occurs after prolonged use, a recalibration is recom-

mended to ensure furthermore high accuracy.

8.2 Return

Before every return of your device, whether for recalibration,

decalcification, modifications or repair, it has to be cleaned

carefully and packed shatter-proofed. You have to enclose a

notice of return with detailed defect description when

sending the device. If your device came in contact with

harmful substances, a declaration of decontamination is

additionally required. Appropriate forms can be downloaded

from our homepage www.bdsensors.com. Should you

dispatch a device without a declaration of decontamination

and if there are any doubts in our service department

regarding the used medium, repair will not be started until an

acceptable declaration is sent.

If the device came in contact with hazardous

substances, certain precautions have to be

complied with for purification!

9. Error handling

Malfunction

wrong connected

no output

line break

signal

defective ampere meter (signal

input)

load resistance too high

analog output

supply voltage too low

signal too low

defective energy supply

shift of output

diaphragm is contaminated or

signal

damaged

electrical connection is damaged

wrong or no

reverse polarity of the pressure

output signal

ranges

If you detect an error, please try to eliminate it by using this table or send the device to our service address for repair.

Improper action and opening can damage the device. Therefore repairs on the device may only be executed by the

manufacturer!

10. Disposal

The device must be disposed according to the

European

Directives

2003/108/EG (on waste electrical and electronic

equipment) Waste of electrical and electronic

equipment may not be disposed by domestic

refuse!

U U U U

WARNING! Depending on the measuring medium,

deposit on the device may cause danger for the user

and the environment. Comply with adequate precau-

tions for purification and dispose of it properly.

11. Warranty conditions

The warranty conditions are subject to the legal warranty

period of 24 months from the date of delivery. In case of

improper use, modifications of or damages to the device, we

do not accept warranty claims. Damaged diaphragms will

also not be accepted. Furthermore, defects due to normal

wear are not subject to warranty services.

Possible cause

inspect the connection

inspect all line connections necessary to supply the device (including

the connector plugs)

inspect the ampere meter (fine-wire fuse) or the analog input of the

PLC

verify the value of the load resistance

verify the output voltage of the power supply

inspect the power supply and the applied supply voltage at the

device

please send the device to BD SENSORS for repair

check the connections

check if the higher pressure is connected with the input "p+"

2002/96/EG

and

Error detection / corrective

12. Declaration of conformity / CE

The

delivered

device

fulfils

all

The applied directives, harmonised standards and docu-

ments are listed in the EC declaration of conformity, which is

available online at: http://www.bdsensors.com.

Additionally, the operational safety is confirmed by the CE

sign on the manufacturing label.

legal

requirements.

DMD_E_011013