PCE Instruments PCE-DDMU 10 Users guide

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Differential Pressure Transmitter

PCE-DDMU 10

INSTRUCTION MANUAL

PCE Americas Inc. 711 Commerce Way Suite 8 Jupiter FL-33458 USA From outside US: +1 Tel: (561) 320-9162 Fax: (561) 320-9176 [email protected]

www.pce-instruments.com/english

www.pce-instruments.com

PCE Instruments UK Ltd.

Unit 11

Southpoint Business Park

Ensign way

Hampshire / Southampton

United Kingdom, SO31 4RF

From outside UK: +44

Tel: (0) 2380 98703 0

Fax: (0) 2380 98703 9

[email protected]

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Table of contents

1. General information

2. Product identification

3. Installation

4. Initial start-up

5. Operation

6. Dimensions / Fixing

7. Maintenance

8. Return

9. Warranty conditions

Operating Manual

Differential Pressure Transmitter PCE-DDMU 10

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1 General information

Do not blow into the pressure ports! This causes damage to the de vice .

- This operating man ual contains important information on the pr oper usage of the device. Read this operating manual carefully before installing and starting up the pressure measuring device.

- Adhere to the safety notes and operating instructions which are gi v en in the operatin g m anual . Ad ditionally applicable regulations regarding occupational safety, accid ent prevention as we ll as na tion al installation standards and engineering rules must be complied with!

- This operating ma nual is part of the d evice. It must be kept near its locati on and always be accessible to all employees.

- This operating m anual is copyright ed. The c ontents of this operating manu al refl ect th e vers i on available at the time of printing.

WARNING! To avoi d operator hazards and d amage to the devic e, the following i nstructions may only be carried out by qualifie d technical personnel.

Limitation of liability: In case of nonobservance of the ope rating manual, inappropriate use, modifications or damage, no liability is assumed and warrant y claim s will be e xcl ud ed.

Symbols used:

: Warning

! : Caution

: Note

– Technical modifications reserved –

2 Product identi fi cation

2.1 Intended use

The PCE-DDMU 10 differential pressure transmitter has been developed for the measurement of pressure difference of dry, nonaggressive gases and pressurized air and can be used for a wide range of different HVAC applications. Its robust design means it can be used in the laboratory and under industrial conditions. Preferred areas of use are in heating, ventilation and air conditioning systems; clean room and medical technology, filter technology and draft metering checks.

It is the operator's responsibility to check and verify

the suitability of the device for the intended application. If any doubts remain, please contact our sales department in order to ensure proper use. PCE Instruments is not liable for any incorrect selections and their effects!

WARNING! – Danger by inappropriate use!

2 Ide

ntification

- The device can be identified by its manufacturing label. It provides the most important data. The product can be clearly identified by the ordering code.

Nominal pressure

Fig. 1: Manufacturing label

range

Signal

Type designation

Supply

Ordering code

Connector pinout

Serial

number

! The manufacturing label may not be removed

from the device!

2.3 Package contents

Please verify that all listed parts are included in the delivery undamaged and comply with your order:

1 Differential Pressure Transmitter PCE-DDMU 10 1 Operating manual

2.4 Transport and storage

Permissible temp erature for storage: -10 °C to + 70 °C For transport make sure that both pressure inputs of differential pressu re sensors are open. The air trans port of absolute pressur e sensors should onl y be done in a pressure compensated cabin.

2.5 Declaration of conformity / CE

The delivered device fulfills all legal requirements. The applicable directives, harmonised standards and documents The CE sign on the manufacturing label.

are listed in the EC declaration of conformity.

operational safety is

additionally confirmed by the

3 Installation

3.1 Mounting and safety instructions

WARNING! This d evice may only be installed by

qualified technical personnel who have read and understood the operating manual!

WARNING! Install the device only when depressurized and current-free!

! Handle this device wit h car e, both in packaged and

unpackaged condition!

! No modifications/ changes should be made on the

device.

! Do not throw the device! ! Do not use any f orce when i nstall ing the d evice , to

prevent damage of the device and the plant!

! Avoid sources of interference (transformers,

transmitters, mot ors etc.) or sources of heat in the surrounding area.

! Shocks or vibrations at the mounting connection

can cause distortions to the output signals.

3.2 Installation steps

- Carefully remove the pressure measuring device from its p ackage and dispose of the pack age properly.

- Mount the devic e in a suitable location usi ng both straps. The corres ponding dime nsions are provided under "6".

- Connections should be vertical, i. e. the pressure connections shoul d point downwards. The sensors are calibrated in t he fac tor y for th ese m ounti ng conditions. In addit ion, t he fo rmati on of co ndensa tion in the pressure tubing of the sensor is also reduced.

- Use the appropriate hoses for the connection.

Display (optional)

Potentiometer for adjusting damping

Phillips-screwdriver

size 2

Configuration switching

Negative pressure connection

Positive pressure connection

Fig. 2: PCE-DDMU 10

3.3 Electrical installation

WARNING! This d evice may only be installed by

qualified technical personnel who have read and understood the operating manual!

- Open the top cover and establish the electrical connection of the device according to the following description. Screw the top cover onto the bo x again.

- Guide externally the power supply line through the right cable fitting so that the wires can be connected with the right terminal block (SUPPLY) without any problem.

- Next, tighten the cable gland by hand. Make sure, however, that the cable is strain-relieved.

3-wire-system (current / voltage) 3-wire-system (current / voltage)

supply -: terminal 7: VSsupply +: terminal 8: VS+ signal: terminal 9: IOUT signal: terminal 10: VOUT

2-wire-system (current) 2-wire-system (current) with two outputs

supply +: terminal 1: VS+ supply -: terminal 2: VS-

Menu button

3.4 Pressure port

- Connect the hose with the higher pressure to the right hand (positive) pressure port.

- Connect the hose with the lower press ure to the left hand (negative) pressure port.

Output 2 NO2: terminal 1: NO2 Output 2 C2: terminal 2: C2 Output 2 NC2 terminal 3: NC2 Output 1 NO1 terminal 4: NO1 Output 1 C1 terminal 5: C1 Output 1 NC1 terminal 6: NC1 supply -: terminal 7: VSsupply +: terminal 8: VS+ signal: terminal 9: IOUT signal: terminal 10: VOUT

supply +: terminal 1: VS+ supply -: terminal 2: VSoutput 1: terminal 3: S1 output 2: terminal 4: S2

terminal block 3 wire system

Cable gland M16x1.5

terminal block 2-wire-system

with two outputs

4 Initial start-up

After switching on the power supply, the output signal can be measured. Variations in the output signals may have two possible causes:

1. The warm-up time of the sensor is about 30min. After this period, the sensor signal should be stable for zero differential pressure and constant ambient temperature.

2. For small pressure ranges, a slight deviation in the zero point due to ambient conditions can occur. This error can be corrected by adjusti ng the zero-point potentiom eter of the sensor after the warm-up tim e. (Set the output signal of the sensor with both pressure inputs open to the nominal value.)

5 Operation

5.1 General information

WARNING! Before st art-up, the user must check

to ensure proper instal lati on an d for an y visible d efects.

WARNING! T he device may only be started and operated by authori zed personnel who have read and understood the operating manual!

WARNING! T he device may only be used within the technical specifications (see the data in the data sheet)!

WARNING! Do not touch the bonding wires – this can destroy the device.

5.2 Setting of damping

Potentiometer for setting the damping is located adjacent to the displ ay on the left (see image 2). The damping of the device c an be set by turning a size 2 Phillips screwdriver in the area of 0 to 5000ms.

5.3 Menu buttons

Zeroing: push left menu button for at least 1 second

5.4 Configuration switch

3-wire-system:

2 3 4

On Zero adjustm en t act ive at

Off Off 1,6 4 10 40 250 1000

On Off 1,0 2,5 6 25 60 400 Off On 160 600

2-wire-system:

2 3 4

On On Zero adjustm en t activ e at

Off Off 1,6 4 10 40 250 1000

On Off 1,0 2,5 6 25 60 400

Off On 160 600

The switches 1 an d 2 don't have an y function at special pressure ranges.

Off 0 ... 10 V / 0 ... 20 mA

On 0 ... 5 V / 4 ... 20 mA

Off Automatic zero adjustm en t

off start and for 24h

Nominal pressure rang e Customized ranges

Off Off Autom atic zero adjustment

off

On Off Zero adjustment active at

start

Off On Zero adjustment active at

start and for 24h start, then every 7 days

Nominal pressure rang e

Customized ranges

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5.5 Performance of disp lay

Switch o n

Activate the menu with the right key.

"CLEAR?" flashes in the lower line, in the upper li ne "no" is displayed; you can select between "yes" and "no" with the ri ght hand key. Confirm the selection with the l eft hand key.

"CLEAR?" flashes in the lower line, in the upper li ne "no" is

d "no" with the right hand key. Confirm the sel ection with the left

hand key.

MODE

Menu only activated with contacts

selected with the right hand key. Confirm the selection with the left hand key.

Values for set points in %

played in the upper line; it is possible t o change the value with the right hand key. Confirm the selection with the left hand key.

Values for reset points in %

"SP %" flashes in the lower line, the current val ue is displayed in the upper line; it is possible to change the value with the right hand key. Confirm the selection with the left hand key.

D. ON

Turn-on delay in s

D. OFF

Return switching delay in s

Setting the pressure unit

"unit" flashes in the lower line, the currently set unit is di splayed in

the upper line; the unit can be selected with the right hand key. Confirm the selection with the left hand key.

Span value for display can be set when the user unit is selected

"SPAN" now flashes in the lower line, the currently set value is displayed in the upper li ne; the position can be

n be changed with the right hand key, the

selection is confirmed with the left hand key.

Calibration of the Offset to the current value

"CAL. OFS?" flashes in the lower line, in the upper line "no"

hand key.

Calibration of the endpoint (display and analogue output) to the current pressure level.

"CAL. FSO?" flashes in the lower line, in the upper line "no" is displayed; you can select between "yes" and "no" with the right hand key. Confirm the selection with the left hand key.

Square-root extraction output signal

 root5 y = x^2.5

Menu only visible if zeroing valve is visible

 S. 7d upon switching on and after 7 days

Resets all menu settings to the factory setting

the message "RESET" flashes in the lower line, in the upper line "no" is displayed; you can select between "yes" and "no" with the ri ght hand key. Confirm the selection with the l eft hand key.

CODE

set all values not equal to zero and confirm. Menu point "LOCK" is displayed

Lock / UNLOCK menu

you can select between "yes" and " no" wit h the right hand key. Co nfirm t he sel ecti on with the left hand

otherwise the device automaticall y closes after 2

UNLOCK? Enter the right code to unlock.

VERSION

Displays the current firmware version.

Connections for flex ible Cable gland

- two-line LC-Display

- visible range 32.5 x 22.5 mm

- 5-digit 7-segment-main display

- digit size 8 mm

- range of indication: ±9999 8-digit 14-segment-additio nal display

- digit size 5 mm

- 52-segment-bargraph

5.6 Struc

ture of menu system (from version 3.01)

5.7 Menu list

OUT 1

OUT 2

Possible option: Delete value (CLEAR no / yes)

(deletes the upper and lower maximum value)

To delete the value: Press the left hand key 

Possible option: Delete value (CLEAR no / yes)

(deletes the upper and lower minimum value)

To delete the value: Press the left hand key  displayed; you can select between "yes" an

 Off Deactivated  Hno Hysteresis, normally open  Hnc Hysteresis, normally closed  Fno Window, normally open  Fnc Window, normally closed

OUT flashes in the lower line, in the upper line the current setting is displayed, e.g. "Hno"; the contacts can be

Setting the set points: press the left ha nd key  "SP %" flashes in the lower l ine, the current value is dis-

5.6 Taking o

ut of service and disposal

WARNING! When dism antling the device, it must

always be carried out in a depress urized and currentless condition! Also check if it is necessary to drain off the medium before dismantling!

WARNING! The medium may pose a danger to the user. Therefore com ply with adequ ate precautions for purification.

The device must b e dispos ed of according to the European Directives 2002/96/EG and 2003/108/EG on waste electrical and electronic equipment. Waste of electrical and electronic equipmen t may not be disp osed of with domestic waste!

 WARNING! Dep ending on the measur ing medium,

deposits on the device may pose a danger to the user and the environment. Comply with adequate precautions for purification and dispose of it properly.

7 Maintenance

In principle, thi s device is maintenance-free. If required, the housing of the device can be cleaned when it is switched off using a damp cloth and non-aggressive cleaning solutions.

8 Return

Before every return of your device, whether for recalibration, decalcification, modifications or repair, it has to b e cleaned c arefully and packed sha tter-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. Should you dispatc decontamination 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 hazardou s substances, certain precautions have to be complied with for purification!

h a

device without a declaration of

and

if there are any doubts in

UNIT

SPAN

Cal. OFS

Cal. FSO

TRANSFER

AUTOZERO

Setting the reset points: press the left hand key 

Setting the turn-on delay: press the left hand key  "D. ON s" flashes in the lower line, the current value is displayed in the upper line; it is possible to change the value between 0.0 ... 120.0 with the right hand key. Confirm the selection with the left hand key.

Setting the return switching delay: press the left hand key  "D. OFF s" flashes in the lower line, the current value is displayed in the upper line; it is possible to change the value between 0.0 ... 120.0 with the right hand key. Confirm the selection with the left hand key.

Units which can be set: [mbar], [bar], [Pa], [hPa], [kPa], [psi], [Atm], [torr], [mmHG], or [user] (if the USER unit is selected, the maximum display value that is shown can be set under the menu item span)

Setting the unit: press the left hand key 

Setting DP / SPAN: press the left hand key  "SPAN" is displayed in the lower line, the currently set value is displayed in the upper line; if you press the left hand button again, "DP" flashes in the lower line, 8.888, e.g. is displayed in the upper line, the decimal point can be adjusted with the right hand key, 88.88 e.g. Confirm the selection with the left hand key.

selected with the left hand key, the corresponding numerical value ca

(basic version ordering code -000) Calibration of the Offset: Press the left hand key  is displayed; you can select between "yes" and "no" with the right hand key. Confirm the selection with the left

Calibration of the endpoint: Press the left hand key 

(special version ordering code -600)

 Lin Standard - Linear  root y = x^0.5  root3 y = x^1.5 cut off 0 … 10 %

(Value is read-only! Setting only possible via configuration switch.) (ordering code -600)

 Off no automatic zero adjustment  S. upon switching the device on  S. 1d upon switching on and after 24 hours

6. Dimensions / fixing

PCE-DDMU 10 with display

hoses with Ø 4 m m and

Ø 6 mm Fig. 3: dimension drawing PCE-DDMU 10 with display PCE-DDMU 10 without display

M16x1,5

9 Warranty conditions

In cases of improper use, modifications of or damage to the device, we do not accept warranty claims. Damaged diaphragms will not be accepted either. Furthermore, defects due to normal wear are not subject to warranty services.

RESET

LOCK

Reset: Press the left hand key 

Activate locking code

LOCK? key.  With YES the menu is closed immediately, measured value is displayed.

(Locking code is deactivated if all values are put on 0 – minutes or after cutting of the electrical connection

hoses with Ø 4 m m and

M16x1,5

Ø 6 mm

Fig. 4: dimension drawing PCE-DDMU 10 without display