Fischer De45 series Instruction Manual

1. Safety Instructions

1.1. General

This manual contains detailed

information about the product

and instructions for its installa-

tion, operation and main-

tenance. Operators and other

technical personnel responsible for the equipment

must read this thoroughly before attempting to in-

stall or operate this equipment. A copy of this ma-

nual must always be kept accessible at the place

of work for reference by concerned personnel.

Chapter 1 sections 1.2 through 1.7) contains

general as well as specific safety instructions.

Chapters 2 through 10, covering topics ranging

from intended purpose of the equipment to its final

disposal, also include important points relating to

safety. Overlooking or ignoring any of these safety

points can endanger humans and animals, and

possibly cause damage to other equipment.

1.2. Personnel Qualification

Personnel responsible for installation, operation,

maintenance and inspection of this product must

have the qualifications, training and experience

necessary to carry out such work on this type of

equipment.

Qualified personnel are people who are able to ju-

dge delegated work and possible dangers due to

technical education, proficiency and experiences

and especially by knowledge about the relevant

norms.

When working with explosion proof constructed

instruments personnel needs to be educated or

instructed resp. have the authorisation to work

with explosion proof instruments in explosion-

hazardous plants.

Table of Contents

1. Safety Instructions

2. Intended Applications

3. Product Description and Functions

4. Installation

5. Commissioning

6. Maintenance

7. Transport

8. Service

9. Accessories

10. Disposal

11. Specifications

12. Dimensions

13. Ordering Code

14. Declaration of Conformity

Data Sheet and Instruction Manual

DE4 Digital Differential Pressure Switch / Transmitter

DE45##00###K0#M#R####

Gas Explosion Proof to Zone 2

Contact: EK Engineering (India)

Web: www.ekeindia.com

Email: [email protected]

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1.3. Risks of Disregarding Safety Instructions

Disregarding safety instructions, use of this product for

purposes for which it is not intended, and/or operation of

this product outside the limits specified for any of its

technical parameters, can result in harm to persons, the

environment, or the plant on which it is installed. Fischer

Mess- und Regeltechnik mbH will not be responsible

for consequences in such circumstances.

1.4. Safety Instructions for Operators

Safety instructions for the proper use of this product must

be followed. This information must be available at all

times by personnel responsible for installation, operation,

maintenance and inspection of this product. Adequate

steps must be taken to prevent the occurrence of

hazardous conditions that can be caused by electric

energy and the convertible energy of the process media.

Such conditions can, for example, be the result of impro-

per electrical or process connections. Detailed informa-

tion is available in relevant published norms (DIN EN,

UVW in ermany; and equivalents in other countries),

industrial standards such as DVW , Ex-, L-, VDE

guidelines, as well as regulations of the local authorities

(e.g., EVUs in ermany).

The instrument must be put out of action and protected

against accidental use if safe operation can not be gua-

ranteed anymore. A reason for this might be one of the

following incidents:

• apparent damage of instrument

• failure of electrical function

• longer storage periods at temperatures higher than

85 C

• bad packaging during transport

Repairing is only allowed to be done by Fischer Mess-

und Regeltechnik mbH.

Before the instrument is put into operation again a

professional routine test acc. to DIN EN61010, part 1

needs to be done. This inspection should necessarily be

done by Fischer Mess- und Regeltechnik mbH. Appro-

piate transport and professional storage of instrument

are understood.

1.5. Modifications Forbidden

Modification or other technical alteration of the product is

not permissible. This also applies to the use of unautho-

rized spare parts for repair / maintenance of the product.

Any modifications to this product, if and as necessary,

should be done only by Fischer Mess- und Regeltechnik

mbH.

1.6. Operationa Restrictions

The operational reliability of the product is guaranteed

only when used for intended purposes. The product must

be selected and configured for use specifically with

defined process media. The limiting values of operating

parameters, as given in the product specification sheet,

must never be crossed.

1.7. Safety Considerations during Insta ation and

Maintenance

The safety instructions given in this manual, existing na-

tional regulations relating to accident prevention, and the

internal safety rules and procedures of the user organiza-

tion regarding safety during installation, operation and

servicing must all be followed meticulously.

It is the responsibility of the users to ensure that only su-

itably qualified and experienced technical personnel are

used for installation, operation and servicing of this

equipment.

2. Intended App ications

Display and limit detection of differential pressure of ga-

ses. The DE45 must be used only for applications and

under conditions specified by the manufacturer.

C assification of Exp osion-Hazardous Area

The differential pressure switch / transmitter DE45 is su-

itable as „electrical equipment for use in explosion-

hazardous areas (flammable gases)“, zone 2.

Dec aration per Directive 94/9/EC (ATEX)

II 3 G EEx nA IIC T4

-10 C Tamb 60 C

3. Product Description and Functions

3.1. Functiona Scheme

3.2. Princip es of Operation

The instrument is based on a piezo-resistive sensor

element and can measure positive gauge, negative

gauge (vacuum) or differential pressure. The pressure is

measured directly by a piezo-resistive resistance bridge

that is formed on the surface of the integral silicon dia-

phragm of the sensor. Change of pressure results in

change of resistance that is converted to a varying

voltage and then digitized. The instrument's internal

microcontroller transfers the measured value on the LED

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display, controls the two limit detection relays / switches,

and transmits the measured value through an analogue

conversion stage as a voltage or current signal output.

4. Installation

The electronic module is mounted on a flat plate or panel,

for which it has 4 holes at the rear for self-tapping screws

3.5mm.

A wall-mounting rear adaptor plate is available as an op-

tion s. 13. Ordering Code).

The pressure transmitters are calibrated at the factory

while mounted vertically, pressure ports downward.

However, they can be mounted in any orientation. If they

are installed with any orientation other than vertical

pressure ports downward), the zero point must be re-set

s. 5.3.2.).

IP65 protection for the housing is guaranteed only if suit-

able connecting cable is used.

4.1. Process Connection

• Only qualified technicians authorized for this type of

work should undertake installation.

• Ensure that process equipment and pressure lines

are at atmospheric pressure before making pressure

connections.

• The instrument should be provided with suitable pro-

tection against pressure surges e.g., snubber or

pulsation damper).

• Ensure that the mechanical configuration and mate-

rials of construction of the instrument are compatible

with the process media.

• Ensure that process pressure is always less than the

specified safe pressure rating.

• Carefully check the pressure-tightness of all pressure

connections before start-up.

4.2.Electrical Connection,

Safety Precautions for

Explosion Prevention

• Only qualified tec nicians aut orized for t is type

of work s ould undertake installation.

• Switc off electrical power to t e plant before

attempting electrical installation work of any kind.

• Do not disconnect plug live wire.

• To ensure safe operation supply wiring system

must meet specifications for zone 2, class 3.

Electrical connections must comply wit relevant

international and local regulations and norms re-

lating to electrical and instrumentation installa-

tions in azardous areas (e.g.: EN 60079-14,

EN 50014).

• Operating supply voltage (24 V DC/AC) must not

excess 32 V DC/AC - neit er per temporary inter-

ferences! Supply wiring system must be pro-

tected by Si 315 T.

• For recommended current supply see 11.

Specifications.

• Parametrisation by PC serial interface adaptor

EU03.F300 is permitted only in safe areas outside

explosion- azardous areas zone 2.

5. Commissioning

• Power supply and signal cabling to the transmitter

must be correctly selected to meet operational requi-

rements, and installed in a way that does not cause

physical stress to the instrument.

• Pressure lines must have a downward gradient

throughout from the pressure instrument to the pro-

cess vessel / pipe. This is to prevent formation of air /

gas pockets for liquid applications) and liquid plugs

for air / gas applications). If this continuous down-

ward gradient cannot be provided for any reason,

then suitable water and / or air separation devices

must be inserted into the pressure lines.

• Pressure lines must be kept as short as possible and

must not have short bends to avoid measurement er-

rors induced by pressure line delays.

5.1. Pressure Connections

The instruments pressure ports are marked by " " and

" " symbols. For differential pressure applications the " "

port must be connected to the higher pressure and the

" " port should be connected to the lower pressure.

If the pressure transmitter is subjected to pressure when

it is started up, zero point checking and adjustment is not

possible. In such cases, only electrical connections of the

instrument should be made, but not the pressure connec-

tions.

5.2. Display

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The 3½ digit LED display normally indicates the current

differential pressure. The backlit symbols to the right of

the 3½ digit LED display indicate the unit of pressure me-

asurement. ( ote: the units shown in the illustrations of

this document can be different from those of the actual

instrument). The two LED lamps above the 3½ digit LED

display respectively indicate the status of the two limit re-

lays / solid-state switches (LED on = relay contacts

closed / solid-state switch on).

While the instrument is in set-up mode, the 3½ digit LED

display either indicates the selected menu option or a

set-up parameter value. The instrument continues its

pressure monitoring functions even while it is in set-up

mode, except under either of two circumstances.

One is when the limit switching delay time is changed:

the existing delay must time out first. The other is when

the look-up table (for conversion of measured values) is

re-programmed (s. 5.3.7.). In these circumstances, the

output signal value and the limit relay/switch states are

frozen until the changes are finalized.

5.3. Set-up

The instrument has comprehensive set-up options by

means of which it can be optimized for any specific mea-

suring or control application. This section of the

document provides information and instructions about

each of the set-up parameters.

Depending on the instrument configu-

ration ordered (e.g.: without transmitter

signal output / with voltage signal out-

put / with current signal output) some of

the menu options may not available.

Some set-up parameters may be consequentially exclu-

ded. For example, if the instrument is ordered without a

transmitter output, all signal conversion programming op-

tions are omitted in the set-up menu (s. 5.3.6. Signal

Conversion and Transfer Functions).

All instrument settings can be conveniently done from a

PC connected to the instrument through a serial interface

adaptor. All set-up parameters can be viewed and

changed on the PC screen. Also, the entire instrument

set-up configuration can be loaded, stored on the PC's

hard disk drive, and printed out for plant / process

documentation purposes. Further information about this

PC software is given in the software documentation.

5.3.1. Selecting the Unit of Pressure Measurement

Make the necessary electrical connections (signal, pow-

er supply) to the instrument. Its pressure sensor must be

pressure-free (i.e. vented to atmosphere; typically by

disconnecting the pressure line/s).

The current valid unit of measurement is indicated by one

of the back-lighted symbols to the right of the digital dis-

play. To change the unit of measurement, first press û

then search for parameter EIN using þ . ext press û

again and select another unit of measurement using þ

or ÿ . Then presse again û to store the selection, and

EIN will appear again in the digital display.

To exit the set-up mode, press ÿ until ESc appears, and

then press û. The current pressure measured value is

indicated again, and the appropriate symbol of the unit of

measurement (to the right of the digital display) is lighted.

The digital display is limited to a count

of ±1999. Therefore, all the available

units of measurement may not be su-

itable for selection for a given applica-

tion.

5.3.2. Zero Point Checking and djustment

If the instrument has been de-pressurized (vented to at-

mosphere) and does not indicate precisely zero, note this

non-zero value. Using the set-up parameter OF1, you can

trim this offset to exactly zero. If the indicated non-zero

value is positive, this value must be entered and stored

as a negative offset value, and vice versa.

If the instrument was in use before zero

setting is done, values of set-up

parameters OF1 and nP would have

been previously programmed. In this

case, set both values to zero, read the

actual zero offset, and then use this value for OF1 for zero

point correction, as described in the previous paragraph.

ote: The registered value is a pure number: no decimal

point is indicated.

After correcting the zero offset, the pressure connections

can be made again.

5.3.3. Damping and Zero Stabilization

If the media is subject to excessive pressure fluctuations,

the displayed readings and the transmitter output signal

can be stabilized using the instrument's DAM and NP set-

up parameters.

The set-up parameter DAM has the effect of a pulsation

damper (on the displayed measurements, output signal

and limit detection, - not on the sensor itself!). It adds a

time-constant (averaging filter) in the user selectable

range of 0.0 to 100.0 secs. When the damping is set to

maximum, it took more than 2 minutes to reach the final

value for a full scale pressure jump.

In many cases fluctuating pressure readings do not cau-

se a problem, except when the plant / equipment is at

zero (differential) pressure condition and readings fluctu-

ate near about zero value. The set-up parameter NP is

meant to take of this. Its value defines the number range

across zero (similar to the zero offset correction number),

within which the measured value is forced to zero. If a

value of 8 is set for NP any pressure measurement in the

range -0.08 to +0.08 bar (or -8 to +8 kPa) displayed as

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zero. Only when the actual pressure is outside this range

will the display indicate a non-zero value. The actual and

displayed pressures will agree starting from double the

value of the NP setting (in the given example: .16 bar or

16 kPa).

5.3.4. Output Signal Setting

The transmitter output signal depends primarily on the

measured pressure. However, this signal can be adapted

to meet users' application requirements precisely. The

basic pressure range (as marked on the product iden-

tification label) and the type of output signal (voltage or

current) always remain unchanged for a particular inst-

rument unit.

The set-up parameters MA (measuring range starting

point) and ME (measuring range end point) specify the

pressure values between which the measurements are

expected to be. Both values can selected anywhere

within the specified measuring range of the instrument

(e.g., 4 kPa). This user-programmed pressure range

will correspond to the output signal (current or voltage)

range, which will be as specified on the product iden-

tification plate: i.e., - 1 V or 4 - 2 mA.

If MA is lower than ME, the signal is said to have a positive

slope: i.e., the output signal increases as the pressure

increases. If ME is lower than MA, the output signal has a

negative slope: i.e., the output signal decreases as the

pressure increases.

The difference between the values of MA and ME must be

at least 25% of the specified measuring range of the ins-

trument (1 kPa for 4 kPa instrument example men-

tioned above). The software does not permit a smaller

pressure span to be entered (the instrument will not allow

storing of, nor exit from an invalid span).

Note: If you change MA and/or ME the

look-up table (s .5.3.6., 5.3.7.) that exi-

sted up to that instant is deleted!

5.3.5. Output Signal Limiting (Namur)

The three set-up parameters oG1,oG2 and oEr specify

the limits of the signal output current or voltage that are

not to be exceeded, irrespective of the actual pressure.

These limit values have higher priority than the MA and

ME pressure span settings.

These settings serve mainly to prevent control systems

from interpreting brief pressure excursions outside the

measuring range as error / fault events. oG1 sets the out-

put signal minimum value, and is useful only for a

4 - mA current signal, because sometimes a value

below 3.8 mA is defined as a sensor fault condition. oG2

sets the upper signal limit and is valid for either current or

voltage signal (e.g., voltage signal output can be limited

at 1 .2 V).

An instrument fault condition can be transmitted as an

output signal value set as parameter oEr. However, it

should be understood that not all instrument fault and er-

ror conditions can be detected and signaled by the self-

diagnostic functions of the instrument.

5.3.6. Signal Conversion and Transfer Fun tions

In certain cases other process variables are derived from

primary pressure measurement. Examples are flow rate

derived from differential pressure across an orifice plate,

and liquid level derived from hydrostatic pressure of

liquid measured at the bottom of the tank. Such deriva-

tions often involve non-linear transfer functions, while it is

necessary for the output signal to be linearly proportional

to the derived variable (e.g. liquid volume in a tank in m3,

or flow rate in cm3/sec).

The set-up parameter F allows the user to select the ap-

propriate signal conversion function from those available:

•F = : Linear characteristic (default)

•F = 1: Square root extraction

•F = 2: Horizontal cylindrical tank

•F = 3...3 : Look-up table with 3 to 3 pairs of values

The tables generated by functions F = , F = 1 and F = 2

are not visible. For these functions, internal values are

used for table computation. These values cannot be mo-

dified directly in the table by the user.

For all conversion functions, when the actual pressure is

equal to the MA value, the output signal will be at the

lowest end of its range ( V, mA or 4 mA). When the

actual pressure is equal to the ME value, the output signal

will be at the highest end of its range (1 V or 2 mA).

The user can enter only the 1...28 intermediate values of

the look-up table function F = 3....3 . The parameters MA

and ME relate to the start and end values of the look-up

table. A change in either of these parameter values cau-

ses the conversion function to be re-set to F = .

Whenever the value of F is changed,

the instrument internally generates a

new look-up table. All previous table

values are deleted and replaced by

new linear progression values.

5.3.7. Look-up Table Programming (F = 3..30)

If the value of set-up parameter F is selected equal to or

greater than 3, a sub-menu LIn is invoked. Through this

sub-menu all the required look-up table values can be

entered, except the first and last pairs of table values (re-

spectively corresponding to MA and ME). This sub-menu

has its own entry and exit points, the latter being the last

of the value pairs to be entered. The table is stored only

when the user exits to the sub-menu prompt LIn, by pres-

sing û. If the table is not correctly entered, the display

will indicate Err, indicating an error condition. If this hap-

pens, it is not possible to exit this sub-menu mode until

the error is corrected.

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The table entries consist of 1 to 28 pairs of values. Valu-

es I02 through I29 (or u02 through u29) specify the

amplitude of the out the signal output and the values

P02 through P29

The table is accepted as correct if each output value is

larger than its preceding value. Pressure values can be

steadily increasing or steadily decreasing. However a

transition from falling to rising pressure values is not per-

mitted; nor are pressure values allowed to turn back

along the same curve.

5.3.8. Limit Setting

The two limit switching outputs (relay contacts or

solid-state switches) are each configured by four set-up

parameters:

Switching output 1 is configured by parameters R1A,

R1E, R1D and R1F.

Switching output 2 is configured by parameters R2A,

R2E, R2D and R2F.

The turn-on and turn-off points of switching output 1 are

defined respectively by parameters R1A and R1E. The

values for these are set in the currently valid unit of me-

asurement (indicated by the lighted symbol to the right of

the digital display).

The two parameters R1A and R1E together determine the

logic of switching output 1:

If R1A is smaller than R1E the output turns on when the

measured value exceeds R1E. It turns off again only

when the measured value falls below R1A (hysteresis

function).

If R1A and R1E have the same value there is no hystere-

sis: the switching output turns on when the measured

value exceeds R1A / R1E and turns off again when the

measured value falls below R1A / R1E.

If R1A is larger than R1E the switching output turns on

when the measured value falls between R1A and R1E:

i.e. when R1E < measured value < R1A (window limit

function).

Both parameters can be independently adjusted over the

full measuring range.

If the unit of measurement is changed the switching

points are changed accordingly. In this event rounding

error can cause a deviation in the least significant (right-

most) digit.

The value of the set-up parameter R1D determines the

delay time for switching output 1 after the measured

value reaches the switching point. The delay value can

be selected in the range 0.0 to 100.0 secs. This value

applies equally to turn on and turn off.

The set-up parameter R1F determines the action of the

switching output. If R1F = 1 the switching output acts as

normally open (NO) contacts. If R1F = 2 it acts as nor-

mally closed (NC) contacts.

5.3.9. Password

The last set-up parameter allows a password to be ente-

red. A password value of 001 to 999 can be selected. A

value of 000 disables the password function.

If a password was set previously the digital display

indicates PAS after Esc is displayed and û is pressed.

The password is then entered by pressing û and then

þÿ. Only then will the set-up menu options be acces-

sible. If an incorrect password is entered the display

jumps back to beginning of the menu (i.e. Esc).

New Functions! (as of April 008)

5.3.10. D0 – Display options

This parameter allows smoothing the displayed values in

cases where they are frequently deviating. The filter

function is similar to the dAM function but acts only upon

the display having no impact on the output signal. Addi-

tionally the display can be turned off partially (D0 = -1

only the setpoint LEDs are driven) or completely

(D0 = -2).

5.3.11. res – Reset to default values

This function will reset all parameters to default when ac-

tivated. Default values can be defined only by using the

PC interface.

5.3.1 . MAF, MEF, dPF – Free Unit

If the device is configured to have a “free“ third unit (sym-

bol: ) then the display can be scaled as desired by

using these three parameters.

The measuring range as defined by parameters MA and

ME is rescaled to MAF and MEF. If the table function ( F)

is enabled table values will be taken into account too.

The dPF value controls the position of the decimal point.

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5.4. Overview of Set-up Parameters

the instrument is turned on, it briefly displays the softwa-

re version number, and then switches automatically to

normal operating mode. Pressing û causes the set-up

menu to be called up, indicated by Esc on the digital dis-

play. After that, by pressing þ repeatedly, each of the

set-up parameters is called up in sequence:

Note: Depending on the version of

the instrument that was ordered,

some of the individual parameters

might not be available.

•PAS Password input appears only if password

function has been enabled). Values: 001 to 999

•DAM Damping time constant). Range of values

= 0.0 to 100.0 secs

•D0 Damping display only), range of values 0..100.

Additional: -1 = no digital value and -2 = display

turned off completely.

•R1A Switching output 1: turn-off point.

•R1E Switching output 1: turn-on point.

•R1D Switching output 1: delay. Range of values =

0.0 to 100.0 sec. This values applies equally for

turn-on and turn-off delays.

•R1F Switching output 1 action. If R1F = 1, acts as

NO contacts. If R1F = 2, acts as NC contacts.

•R2A Switching output 2: turn-off point.

•R2E Switching output 2: turn-on point.

•R2D Switching output 2: delay. Range of values =

0.0 to 100.0 sec. This values applies equally for

turn-on and turn-off delays.

•R2F Switching output 2 action. If R1F = 1, acts as

NO contacts. If R1F = 2, acts as NC contacts.

•EIN Unit of measurement. The selection is indica-

ted by the lighted symbol to the right of the

digital display. A particular unit can be selected

only if it can be meaningfully represented within

the basic measuring range of the instrument.

•MA Measuring range start point. The value of the

measured variable corresponding with the

minimum value of the output signal 0 V, 0 mA

or 4 mA, depending on the instrument version).

•ME Measuring range end point. The value of the

measured variable corresponding with the ma-

ximum value of the output signal 10 V or

20 mA, depending on the instrument version).

•dPF Position of decimal place for free unit.

•MAF Measuring range start point displayed value)

for free unit.

•MEF Measuring range end point displayed value)

for free unit.

•NP Zero stabilization. Range = 0 to 100 counts.

The value spans symmetrically around the

actual zero point.

•OF1 Zero offset correction, input 1. Range = -100 to

+100 counts.

•FSignal conversion function. 0 = linear,

1 = square root,

2 = horizontal cylindrical tank,

3..30 = look-up table)

•lIn Look-up table entry sub-menu)

•oG1 Output signal limiting, minimum

•OG2 Output signal limiting, maximum

•OEr Fault signaling output signal value on detec-

tion of instrument fault).

•res Reset all values to default. Default values can

be defined only by using the PC interface.)

•-P- Password setting. Permissible password valu-

es = 001 to 999. "000" disables password pro-

tection.

If the password is lost, the instru-

ment can be unlocked only through a

serial interfaced PC, or the instru-

ment has to be sent to the manufac-

turer for this purpose.

If oG1 and oG2 are both set to "0", the

output signal will not be subjected to

limiting.

If oG1 is set at the maximum value

11 V or 21 mA), the output signal can

be adjusted using oG2 to any arbitrary

value between zero and maximum val-

ue, irrespective of pressure measure-

ment. This feature enables the instrument to be used as

a simulated signal source to test signal lines and other in-

struments or systems.

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5.5. Electrical Connections, Switching Outputs

Switching outputs:

Switching output 1 is configured by parameters R1A,

R1E, R1D, and R1F.

Switching output 2 is configured by parameters R1A,

R1E, R1D, and R1F.

Power supply voltage and output signal load:

Nominal supply voltage and the operating supply voltage

range are indicated under 11. Specifications.

The maximum output signal loads are indicated under

11. Specifications.

The signal ground line is internally connected to the ins-

trument ground, and serves only as an alternative ground

connection for the output signal. This usually increases

the noise margin.

6. Maintenance

The instrument is inherently maintenance-free.

However, to ensure reliable operation and maximize the

operating life of the instrument, it is recommended that

the instrument, its external electrical and process con-

nections, and external connected devices be regularly in-

spected, e.g.:

• Check the display.

• Check the switching function in connection with exter-

nal devices.

• Check all pressure connections for leak-tightness.

• Check the integrity of all electrical connections of the

instruments.

Inspection and test schedules depend on operating and

site conditions. The operating manuals of other equip-

ment to which the transmitter is connected must be read

thoroughly to ensure that all of them work correctly when

connected together.

7. Transport

The product must be protected against shock and vibra-

tion during transport. It must therefore be properly pak-

ked, preferably in the original factory packaging,

whenever it is to be transported.

8. Service

Any defective devices or devices with missing parts

should be retourned to Fischer Mess- und Regeltechnik

GmbH. For quick service contact our service department.

Remaining medium in and on dismant-

led measuring instruments may cause

danger to persons, environment and

equipment. Take reasonable precau-

tions! Clean the instrument thoroughly

if necessary.

9. Accessories

• M12 connectors with pre-wired cable lengths

on request)

• PC serial interface adaptor with software:

model EU03.F300

10. Disposal

Protect your environment!

Use the product in accordance with

relevant regulations. Please be aware

of environmental consequences of dis-

posal at the end of the product's life,

and take care accordingly.

Contact: EK Engineering (India)

Web: www.ekeindia.com

Email: [email protected]

All manuals and user guides at all-guides.com

11. Specifications

General

° Straight line deviation = nonlinearity + hysteresis; at 25 °C; pressure within specified range (characteristic linear, not spreaded

°° Pressure within specified range (characteristic linear, not spreaded ; compensated temperature range 0 to 60 °C

Measuring

range

mbar 0-4 0-6 0-10 0-16 0-25 0-40 0-60 0-100 0-160 0-250 ±2,5 ±4 ±6 ±10 ±16 ±25 ±40 ±60

Pa 0-400 0-1600 ±250 ±400 ±600 ±1000 ±1600

kPa 0-0.4 0-0.6 0-1.0 0-1.6 0-2.5 0-4.0 0-6.0 0-10.0 0-16.0 0-25.0 ±0.25 ±0.4 ±0.6 ±1.0 ±1.6 ±2.5 ±4.0 ±6.0

max. static

operating

pressure

mbar 50 100 250 500 1500 50 100 250 500

Max. safe

pressure mbar 150 300 750 1500 3000 150 300 750 1500

Straight line

deviation

(max. °

%FS 1.0

Straight line

deviation

(typ. °

%FS 0.5

TC span

(max. °°

%FS

10K 1.0 0.3 0.4 1.0 0.5 0.3

TC span

(typ. °°

%FS

10K 0.3

TC offset

(max. °°

%FS

10K 1.0 0.4 1.0 0.5 0.4

TC offset

(typ. °°

%FS

10K 0.2

Operating temp. (ambient

Operating temp. (media

Storage temperature

Protection class (housing

-10 C Tamb 60 C

-20 ... 70°C

IP 65 acc.to DIN EN 60529

Electrical Data

Nominal supply voltage

Operating supply voltage

Output signal

24 V DC / AC

12 ... 32 V DC / AC

0 ... 20 mA, 4 ... 20 mA, 0 ... 10 V DC 3-wire

Output signal load For output current RL (UB - 4V / 0.02A (UB 26V , else RL 1100

For output voltage RL 2 K (UB 15V , RL 10 K (UB= 12 …15V

Power consumption approx. 2 W / VA

Switching contacts 2 programmable voltage free MOSFET switch outputs; NO/NC

U = 3 … 32 V DC/AC, Imax = 0.25 A, Pmax = 8 W/VA, RON 4

Display 3½ digit LED

Connections, Materials, Mounting

Electrical connections Two round-shell multi-pin connector sockets (M12, male

Connector 1: 5-pin: power input and analog signal output

Connector 2: 4-pin: relay contacts / solid-state switch outputs

Pressure connections Threaded hose clamp connectors (aluminum for 8/6 or 6/4 mm hose

Materials, housing

Materials, media contact

Polyamid PA6.6

Silicon, PVC, aluminium, brass

Mounting Wall mountable using adaptor plate

Declaration per Directive 94/9/EC (ATEX) II 3G EEx nA IIC T4

Power supply acc. to EN 500 1

Quint 4V DC/5A/Ex EEx nAC IIC T4

Contact: EK Engineering (India)

Web: www.ekeindia.com

Email: [email protected]

All manuals and user guides at all-guides.com

11.1. Programming

Via membrane key-switches or by using PC-programming interface (accessory), programming mode can be pass-

word protected.

otes:

(1) Measured value deviations up to 100 counts symmetric about zero are set to zero. Used for zero drift suppression.

(2) Maximum effective turn-down ratio = 4:1. Only the output signal is affected.

Transfer function is inverted if start value > end value.

(3) Zero calibration setting may change with mounting orientation.

1 . Dimensions (all units in mm unless stated otherwise)

Settings:

Input filtering 0.0 ... 100.0 secs (10 / 90% step response time) for signal output, display seperated

Relay / switch 1 / 2 activation point, de-activation point, response time delay (0.0 ... 100.0 secs),

logic ( /O or /C)

Measurement unit selection mbar / Pa / „free unit“ start value, end value and decimal place for „free unit“

Zero suppression 0 ... 100 counts (1)

Output signal start / end value can be set at any point of measuring range (2)

Zero pressure calibration ±100 counts (3)

Output characteristic linear, square rooted, horizontal cylindr. tank, table (3...30 entries)

Password range 001 ... 999 (000 = password protection disabled)

M 12 connector

Holes for sheet

metal screws:

3.5 mm dia.

connector 1connector 2

cutting ring fittings for

6 or 8 mm tubes

Wall mounting adaptor

plate (optional) Rear view without

wall mounting adaptor plate

(standard)

Contact: EK Engineering (India)

Web: www.ekeindia.com

Email: [email protected]

All manuals and user guides at all-guides.com

13. Ordering Code

Digital Differential Pressure Switch / Transmitter

DE45 K M R####

0 ... 4 mbar........................... 50 mbar........................ 5 2

0 ... 6 mbar........................... 50 mbar........................ 5 3

0 ... 10 mbar......................... 100 mbar........................ 5 4

0 ... 16 mbar......................... 100 mbar........................ 5 5

0 ... 25 mbar......................... 250 mbar........................ 5 6

0 ... 40 mbar......................... 250 mbar........................ 5 7

0 ... 60 mbar......................... 500 mbar........................ 5 8

0 ... 100 mbar......................... 500 mbar........................ 5 9

0 ... 160 mbar....................... 1500 mbar........................ 6 0

0 ... 250 mbar....................... 1500 mbar........................ 8 2

-2,5 ... +2,5 mbar........................... 50 mbar........................ A 6

-4 ... +4 mbar........................... 50 mbar........................ A 7

-6 ... +6 mbar......................... 100 mbar........................ A 8

-10 ... +10 mbar......................... 100 mbar........................ A 9

-16 ... +16 mbar......................... 250 mbar........................ B 1

-25 ... +25 mbar......................... 250 mbar........................ B 2

-40 ... +40 mbar......................... 500 mbar........................ C 5

-60 ... +60 mbar......................... 500 mbar........................ B 3

Pressure Connections

Threaded hose clamp co ectors for 6 / 4 mm hose .................................................. 4 0

Threaded hose clamp co ectors for 8 / 6 mm hose .................................................. 4 1

Signal Output

No sig al output............................................................................................................................ 0

Curre t output: 0 - 20 mA li ear, 3-wire........................................................................................ A

Voltage output: 0 - 10 V DC li ear, 3-wire .................................................................................... C

Curre t output: 4 - 20 mA li ear, 3-wire........................................................................................ P

Supply Voltage

24 V DC/AC omi al (12-32 V DC/AC) ................................................................................................ K

Display Switching output

3½-digit LED 2 pote tial-free semico ductor switch ............................................... 6

Electrical connection

M12 co ector ............................................................................................................................................................... M

Installation

Rear cover a chor poi ts....................................................................................................................................................... 0

Set for pa el mou ti g........................................................................................................................................................... T

Wall mou ti g ........................................................................................................................................................................ W

Customized Number