FISCHER DE38D410 User manual

1 Safety Instructions
1.1 General
This manual contains detailed infor-
mation about the product, and in-
structions for its installation, opera-
tion and maintenance. Operators
and other technical personnel re-
sponsible for the equipment must read this tho-
roughly before attempting to install or operate this
equipment. A copy of this manual must always be
kept accessible at the place of work for reference
by concerned personnel.
Chapter 1 (sections 1.2 through 1.7) contains ge-
neral as well as specific safety instructions.
Chapters 2 through 10, covering topics ranging
from intended purpose of the equipment to its fi-
nal disposal, also include important points rela-
ting to safety. Overlooking or ignoring any of the-
se safety points can endanger humans and ani-
mals, and possibly cause damage to other equip-
ment.
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.
1.3 Risks of Disregarding Safety Instructions
Disregarding safety instructions, use of this pro-
duct 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 GmbH will not be responsible for
consequences in such circumstances.
1.4 Safety Instructions for Operators
Safety instructions for the proper use of this pro-
duct must be followed. This information must be
available at all times to by personnel responsible
for installation, operation, maintenance and in-
spection 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 improper
electrical or process connections.
Detailed information is available in relevant pub-
lished norms (DIN EN, UVW in Germany; and
equivalents in other countries), industrial stan-
dards such as DVWG, EG-, GL-, VDE
guidelines, as well as regulations of the
local authorities ( e.g., EVUs in Ger-
many).
               
# 09005136 26.03.2009 BA_D_DE38_D410
Instruction M a nua l
D E 3 8
D igita l D iffe re ntia l P re ssure T ra nsm itte r / S w itch
DE38D410
Inhalt
1 Safety Instructions .......................................1
2 Intended Applications...................................2
3 Product Description and Functions..............2
4 Installation....................................................2
5 Commissioning ............................................3
6 Maintenance ................................................8
7 Transport......................................................8
8 Service.........................................................8
9 Accessories..................................................8
10 Disposal.......................................................8
11 Specifications...............................................9
12 Dimensions ................................................11
13 CE-Certificate.............................................12
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]

1.5 Modifications Forbidden
Modification or other technical alteration of the product
is not permissible. This also applies to the use of un-
authorized spare parts for repair / maintenance of the
product. Any modifications to this product, if and as ne-
cessary, should be done only by Fischer Mess- und Re-
geltechnik GmbH.
1.6 Operational 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 ope-
rating parameters, as given in the product specification
sheet, must never be crossed.
1.7 Safety Considerations during Installation and Mainte-
nance
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 or-
ganization regarding safety during installation, operation
and servicing must all be followed meticulously.
It is the responsibility of the users to ensure that only
suitably qualified and experienced technical personnel
are used for installation, operation and servicing of this
equipment.
2 Intended Applications
The product includes the functions of sensing, signal
conversion, display, signal transmission, and limit de-
tection of pressure / differential pressure of gases and
liquids. The product must be used only for applications
and under conditions specified by the manufacturer. In
case of uncertainties, the user should consult the manu-
facturer before installing and using the product.
3 Product Description and Functions
3.1 Block Schematic Diagram
3.2 Principles of Operation
The instrument uses a tough, robust sensing dia-
phragm, which is qualified for over-, low- and differenti-
al pressure measurings. The comparative pressures
work on a elastic bedded measuring diaphragm. The di-
aphragm is at zero position when pressures on either
side of the diaphragm are equal.Inequality of pressures
results in deflecting the diaphragm towards the lower
pressure side until a new equilibrium determined by the
spring power is reached. This deflection is transmitted
by a tappet to the center of a inductive travel sensor.
The integrated electronics analyzes the deflection and
converts it into display, switch contacts and output sig-
nal.
4 Installation
The instrument is intended for the assembly on the
base of the Flender circulatory- measurement.
At the installation of the upper part there should be paid
attention to the correct adjustment. The operator must
be able to regulate and read the instrument from a safe
place.
The sealing faces and the O- ring seals must not be da-
maged!
The instrument is adjustet for a vertical mounting positi-
on. Other positions aren't sensibel because of the clear-
ness of reading the digital display.
If the instrument is intended for outdoor application, we
highly recommend using an ade-quate protective hou-
sing (or at least a big enough shelter) as permanent
protection against UV-radiation on the membrane key-
board and against exposure of the instrument to rain or
snow.
4.1 Process Connections
 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.
 Take account of the maximum pressure.
 Carefully check the pressure-tightness of all pressu-
re connections before start-up.
4.2 Electrical Connections
 Only qualified technicians authorized for this type of
work should undertake installation.
 Electrical connections must comply with relevant in-
ternational, national and local regulations and norms
relating to electrical and instrumentation installati-
ons.
2
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]

 Switch off electrical power to the plant before at-
tempting electrical installation work of any kind.
 Make electrical connections to the transmitter
through a suitable energy-limiting safety device (iso-
lation or zener barrier).
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
errors induced by pressure line delays.
5.1 Pressure Connections
If the pressure transmitter is subjected to pressure
when it is started up, zero point checking and adjust-
ment is not possible. In such cases, only electrical con-
nections of the instrument should be made, but not the
pressure connections.
5.2 Display
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
measurement. (Note: the units shown in the illustrations
of this document can be different from those of the actu-
al instrument). The two LED lamps above the 3½ digit
LED display respectively indicate the status of the two
limit relays / 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
measuring or control application. This section of the
document provides information and instructions about
each of the set-up parameters.
Depending on the instrument configurati-
on ordered (e.g.: without transmitter signal
output / with voltage signal output / with
current signal output) some of the menu
options may not available. Some set-up
parameters may be consequentially excluded. For
example, if the instrument is ordered without a transmit-
ter output, all signal conversion programming options
are omitted in the set-up menu (s. 5.3.6. Signal Conver-
sion and Transfer Functions).
All instrument settings can be conveniently done from a
PC connected to the instrument through a serial inter-
face 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 docu-
mentation 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, po-
wer 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
display. To change the unit of measurement, first press
then search for parameter EE
EE
II
IINN NNusing . Next press
again and select another unit of measurement using
or . Then presse again to store the selection, and
EE
EE
II
IINN NN
will appear again in the digital display.
To exit the set-up mode, press until EE
EE
SS
SScc cc appears, and
then press . 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 suitable for se-
lection for a given application.
3
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]

5.3.2 Zero Point Checking and Adjustment
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 OO
OO
FF
FF11 11
,
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 parame-
ters OO
OO
FF
FF11 11
and nn
nnPP PP would have been pre-
viously programmed. In this case, set
both values to zero, read the actual zero
offset, and then use this value for OO
OO
FF
FF11 11
for zero point cor-
rection, as described in the previous paragraph.
Note: The registered value is a pure number: no deci-
mal point is indicated.
After correcting the zero offset, the pressure connecti-
ons can be made again.
5.3.3 Damping and Zero Stabilization
If the media is subject to excessive pressure fluctuati-
ons, the displayed readings and the transmitter output
signal can be stabilized using the instrument's DD
DD
AA
AAMM MM
and
NN
NNPP PPset-up parameters.
The set-up parameter DD
DD
AA
AAMM MM
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
cause a problem, except when the plant / equipment is
at zero (differential) pressure condition and readings
fluctuate near about zero value. The set-up parameter
NN
NNPP PPis 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 NN
NN
PP
PPany pressure measure-
ment in the range -0.08 to +0.08 bar (or -8 to +8 kPa)
displayed as 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 NN
NNPP PP setting (in the
given example: 0.16 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 adap-
ted to meet users' application requirements precisely.
The basic pressure range (as marked on the product
identification label) and the type of output signal (volta-
ge or current) always remain unchanged for a particular
instrument unit.
The set-up parameters MM
MM
AA
AA (measuring range starting
point) and MM
MM
EE
EE
(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., 400 kPa). This user-programmed pressure range
will correspond to the output signal (current or voltage)
range, which will be as specified on the product identifi-
cation plate: i.e., 0 ... 10V or 4 ... 20 mA.
If MM
MM
AA
AAis lower than MM MM
EE
EE
, the signal is said to have a positi-
ve slope: i.e., the output signal increases as the pressu-
re increases. If MM
MM
EE
EE
is lower than MM
MM
AA
AA, the output signal
has a negative slope: i.e., the output signal decreases
as the pressure increases.
The difference between the values of MM
MM
AA
AAand MM MM
EE
EE
must be
at least 25% of the specified measuring range of the in-
strument (100 kPa for 400 kPa instrument example
mentioned above). The software does not permit a
smaller pressure span to be entered (the instrument will
not allow storing of, nor exit from an inva-
lid span).
Note: If you change MM
MM
AA
AAand/or MM MM
EE
EE
the look-
up table (s .5.3.6., 5.3.7.) that existed up
to that instant is deleted!
5.3.5 Output Signal Limiting (Namur)
The three set-up parameters oo
ooGG GG
11
11
, oo
ooGG GG
22
22 and oo ooEE EE
rr
rr 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 MM
MM
AA
AA and
MM
MM
EE
EE
pressure span settings.
These settings serve mainly to prevent control systems
from interpreting brief pressure excursions outside the
measuring range as error / fault events. oo
ooGG GG
11
11
sets the
output signal minimum value, and is useful only for a
4 ... 20 mA current signal, because sometimes a value
below 3.8 mA is defined as a sensor fault condition. oo
ooGG GG
22
22
sets the upper signal limit and is valid for either current
or voltage signal (e.g., voltage signal output can be limi-
ted at 10.2 V).
An instrument fault condition can be transmitted as an
output signal value set as parameter oo
ooEE EE
rr
rr. However, it
should be understood that not all instrument fault and
error conditions can be detected and signaled by the
self-diagnostic functions of the instrument.
5.3.6 Signal Conversion and Transfer Functions
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 derivations often involve non-linear transfer functi-
ons, while it is necessary for the output signal to be line-
arly proportional to the derived variable (e.g. liquid volu-
me in a tank in m³, or flow rate in cm/sec).
The set-up parameter FF
FFallows the user to select the ap-
propriate signal conversion function from those
4
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]

available:
FF
FF= 0: Linear characteristic (default)
FF
FF = 1: Square root extraction
FF
FF= 2: Horizontal cylindrical tank
FF
FF= 3...30: Look-up table with 3 to 30 pairs of values
The tables generated by functions FF
FF = 0, FF FF = 1 and
FF
FF = 2 are not visible. For these functions, internal va-
lues are used for table computation. These values can-
not be modified directly in the table by the user.
For all conversion functions, when the actual pressure
is equal to the MM
MM
AA
AA value, the output signal will be at the
lowest end of its range (0 V, 0 mA or 4 mA). When the
actual pressure is equal to the MM
MM
EE
EE
value, the output sig-
nal will be at the highest end of its range (10 V or 20
mA). The user can enter only the 1...28 intermediate va-
lues of the look-up table function FF
FF = 3....30. The para-
meters MM
MM
AA
AA and MM MM
EE
EE
relate to the start and end values of
the look-up table. A change in either of these parameter
values causes the conversion function to be re-set to
FF
FF = 0.
Whenever the value of FF
FFis changed, the
instrument internally generates a new
look-up table. All previous table values
are deleted and replaced by new linear progression va-
lues.
5.3.7 Look-up Table Programming (F = 3..30)
If the value of set-up parameter FF
FFis selected equal to or
greater than 3, a sub-menu LL
LLII IInn nn 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
(respectively corresponding to MM
MM
AA
AA and MM MM
EE
EE
). 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
LL
LLII IInn nn, by pressing . If the table is not correctly entered,
the display will indicate EE
EE
rr
rr rr rr, indicating an error conditi-
on. If this happens, it is not possible to exit this sub-
menu mode until the error is corrected.
The table entries consist of 1 to 28 pairs of values. Va-
lues II
II00 0022 22 through II II22 2299 99 (or uu uu00 0022 22 through uu uu22 2299 99) specify the
amplitude of the out the signal output, and the values
PP
PP00 0022 22 through PP PP22 2299 99 are the corresponding pressure values.
Entering or changing table values through the instru-
ment's membrane keyboard is a tedious and error-pro-
ne method. It should only be used as a stopgap method
when a PC and/or the PC interface module is not
available.
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
permitted; 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 RR
RR11 11
AA
AA,
RR
RR
11
11
EE
EE
, RR
RR11 11
DD
DD
and RR
RR11 11
FF
FF.
Switching output 2 is configured by parameters RR
RR22 22AA AA,
RR
RR
22
22EE EE
, RR
RR22 22DD DDand RR RR22 22FF FF.
The turn-on and turn-off points of switching output 1 are
defined respectively by parameters RR
RR11 11
AA
AAand RR RR11 11
EE
EE
. The va-
lues for these are set in the currently valid unit of mea-
surement (indicated by the lighted symbol to the right of
the digital display).
The two parameters RR
RR11 11
AA
AAand RR RR11 11
EE
EE
together determine the
logic of switching output 1:
If RR
RR11 11
AA
AA is smaller than RR RR11 11
EE
EE
, the output turns on when the
measured value exceeds RR
RR11 11
EE
EE
. It turns off again only
when the measured value falls below RR
RR11 11
AA
AA (hysteresis
function).
If RR
RR11 11
AA
AAand RR RR11 11
EE
EE
have the same value, there is no hystere-
sis: the switching output turns on when the measured
value exceeds RR
RR11 11
AA
AA / RR RR
11
11
EE
EE
, and turns off again when the
measured value falls below RR
RR
11
11
AA
AA/ RR RR
11
11
EE
EE
.
If RR
RR11 11
AA
AA is larger than RR RR11 11
EE
EE
, the switching output turns on
when the measured value falls between RR
RR11 11
AA
AA and RR RR11 11
EE
EE
:
i.e., when RR
RR11 11
EE
EE
< measured value < RR
RR11 11
AA
AA (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 RR
RR11 11
DD
DD 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 RR
RR11 11
FF
FF determines the action of the
switching output. If RR
RR11 11
FF
FF = 1, the switching output acts as
normally open (NO) contacts. If RR
RR11 11
FF
FF = 2, it acts as nor-
mally closed (NC) contacts.
5.3.9 Password
The last set-up parameter allows a password to be en-
tered. 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 indi-
cates PP
PPAA AASS SS after EE EE
SS
SScc cc is displayed and is pressed. The
password is then entered, by pressing and then , .
Only then will the set-up menu options be accessible. If
an incorrect password is entered, the display jumps
5
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]

back to beginning of the menu (i.e., EE
EE
SS
SScc cc).
New Functions! (as of April 2008)
5.3.10 DD
DD00 00– Display options
This parameter allows smoothing the displayed values
in cases where they are frequently deviating. The filter
function is similar to the dd
ddAA AAMM MM
function, but acts only
upon the display, having no impact on the output signal.
Additionally the display can be turned off partially
(DD
DD00 00 = -1, only the setpoint LEDs are driven) or comple-
tely (DD
DD00 00= -2).
5.3.11 rr
rree eess ss– Reset to default values
This function will reset all parameters to default when
activated. Default values can be defined only by using
the PC interface.
5.3.12 MM
MM
AA
AAFF FF
,,
,, MM MM
EE
EEFF FF
,,
,, dd ddPP PPFF FF– Free Unit
If the device is configured to have a free third unit
(symbol: ) then the display can be scaled as desired
by using these three parameters.
The measuring range as defined by parameters MM
MM
AA
AAand
MM
MM
EE
EE
is rescaled to MM
MM
AA
AAFF FF and MM MM
EE
EE
FF
FF. If the table function (FF FF) is
enabled, table values will be taken into account too.
The dd
ddPP PPFF FFvalue controls the position of the decimal point.
5.4 Overview of Set-up Parameters
When the instrument is turned on, it briefly displays the
software version number, and then switches automati-
cally to normal operating mode. Pressing causes the
set-up menu to be called up, indicated by EE
EE
SS
SScc cc on the di-
gital display. After that, by pressing repeatedly, each
of the set-up parameters is called up in sequence:
Note: Depending on the version of the instru-
ment that was ordered, some of the individual
parameters might not be available.
PP
PPAA AASS SS Password input (appears only if password
function has been enabled). Values: 001 to
999
DD
DD
AA
AAMM MM Damping (time constant). Range of values
= 0.0 to 100.0 secs
DD
DD00 00 Damping (display only), range of values
0..100. Additional: -1 = no digital value and
-2 = display turned off completely.
RR
RR11 11
AA
AA Switching output 1: turn-off point.
RR
RR11 11
EE
EE Switching output 1: turn-on point.
RR
RR11 11
DD
DD Switching output 1: delay. Range of values
= 0.0 to 100.0 sec. This values applies equally
for turn-on and turn-off delays.
RR
RR11 11
FF
FF Switching output 1 action. If RR RR11 11
FF
FF = 1, acts as
NO contacts. If RR
RR11 11
FF
FF= 2, acts as NC contacts.
RR
RR22 22AA AA Switching output 2: turn-off point.
RR
RR22 22EE EE Switching output 2: turn-on point.
RR
RR22 22DD DD Switching output 2: delay. Range of values
= 0.0 to 100.0 sec. This values applies equally
for turn-on and turn-off delays.
RR
RR22 22FF FF Switching output 2 action. If RR RR11 11
FF
FF = 1, acts as
NO contacts. If RR
RR11 11
FF
FF= 2, acts as NC contacts.
EE
EEii ii NN NN Unit of measurement. The selection is indica-
ted by the lighted symbol to the right of the di-
gital display. A particular unit can be selected
only if it can be meaningfully represented
within the basic measuring range of the instru-
ment.
MM
MM
AA
AA Measuring range start point. The value of the
measured variable corresponding with the mi-
nimum value of the output signal (0 V, 0 mA or
4 mA, depending on the instrument version).
MM
MM
EE
EE Measuring range end point. The value of the
measured variable corresponding with the
maximum value of the output signal (10 V or
20 mA, depending on the instrument version).
DD
DDPP PPFF FF Position of decimal place for free unit.
MM
MM
AA
AAFF FF Measuring range start point (displayed value)
for free unit.
MM
MM
EE
EEFF FF Measuring range end point (displayed value)
for free unit.
NN
NNPP PP Zero stabilization. Range = 0 to 100 counts.
The value spans symmetrically around the ac-
tual zero point.
OO
OO
FF
FF11 11 Zero offset correction, input 1. Range = -100
to +100 counts.
FF
FF Signal conversion function. (0 = linear, 1 =
square root, 2 = horizontal cylindrical tank,
3..30 = look-up table)
ll
ll II IInn nn Look-up table entry (sub-menu)
oo
ooGG GG
11
11 Output signal limiting, minimum
OO
OO
GG
GG
22
22 Output signal limiting, maximum
OO
OO
EE
EErr rr Fault signaling (output signal value on detec-
tion of instrument fault).
RR
RREE EESS SS Reset all values to default. (Default values
can be defined only by using the PC inter-
face.)
--
--PP PP-- -- Password setting. Permissible password va-
lues = 001 to 999. "000" disables password
protection.
6
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]

If the password is lost, the instrument can be
unlocked only through a serial interfaced PC,
or the instrument has to be sent to the manu-
facturer for this purpose
If oo
ooGG GG
11
11
and OO
OO
GG
GG
22
22 are both set to "0", the out-
put signal will not be subjected to limiting.
If oo
ooGG GG
11
11
is set at the maximum value (11 V
or 21 mA), the output signal can be ad-
justed using OO
OO
GG
GG
22
22 to any arbitrary value
between zero and maximum value, irre-
spective of pressure measurement. This feature enab-
les the instrument to be used as a simulated signal
source to test signal lines and other instruments or sys-
tems.
5.5 Electrical Connections, Switching Outputs
Switching outputs:
Switching output 1 is configured by parameters RR
RR
11
11
AA
AA, RR RR11 11
EE
EE
,
RR
RR11 11
DD
DD
, and RR
RR
11
11
FF
FF.
Switching output 2 is configured by parameters RR
RR
22
22AA AA,
RR
RR22 22EE EE
, RR
RR22 22DD DD, and RR RR22 22FF FF.
Power supply voltage and output signal load:
Nominal supply voltage and the operating supply volta-
ge 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 in-
strument ground, and serves only as an alternative
ground connection for the output signal. This usually in-
creases the noise margin.
5.6 Default parameter (Model C)
Does not apply to replacement instruments of model
B, see thererfore chapter 5.7.
5.7 Default parameter
(instruments as a replacement for model B)
7
Parameter Einstellwert Einhe
BASE MEASURING RANGE
OFFSET-ADJUSTMENT 001 bar
DAMPING
ZERO WINDOW
DISPLAY OPTION
DISPLAY OF DAMPING
5
100
Display of damping [do>0]
2
s
s
DENOTATION
UNIT
RELAY TRIPPING POINT 1
RELAY SWITCHING POINT 1
DE3802DYYPKD410
l/min
acc. to equipment list
acc. to equipment list
RELAY DECELERATION 1
RELAY FUNCTION 1
RELAY TRIPPING POINT 2
RELAY SWITCHING POINT 2
10
Shutter
acc. to equipment list
acc. to equipment list
s
RELAY DECELERATION 2
RELAY FUNCTION 2
MEASURING RANGE 4 mA at
MEASURING RANGE 20 mA at
10
Shutter
0
acc. to adjustment of oil
density
LINEARISATION
RATE OF FLOW at start
RATE OF FLOW at last
DECIMAL PLACES
1(straight line, square rooted))
0
acc. to equipment list
s
bar
bar
LIMITATION Imin
LIMITATION Imax
LIMITATION Ierror
1
21
21
mA
mA
mA
Parameter Einstellwert Einheit
BASE MEASURING RANGE
OFFSET-ADJUSTMENT 001 bar
DAMPING
ZERO WINDOW
DISPLAY OPTION
DISPLAY OF DAMPING
5
100
Display of damping [do>0]
2
s
s
DENOTATION
UNIT
RELAY TRIPPING POINT 1
RELAY SWITCHING POINT 1
DE3802DYYPKD410
bar
0
0
RELAY DECELERATION 1
RELAY FUNCTION 1
RELAY TRIPPING POINT 2
RELAY SWITCHING POINT 2
10
Shutter
0
0
s
RELAY DECELERATION 2
RELAY FUNCTION 2
MEASURING RANGE 4 mA at
MEASURING RANGE 20 mA at
10
Shutter
0
1
LINEARISATION
RATE OF FLOW at start
RATE OF FLOW at last
DECIMAL PLACES
0 (straight line)
0
1000
0.000
s
bar
bar
LIMITATION Imin
LIMITATION Imax
LIMITATION Ierror
1
21
21
mA
mA
mA
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]

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
inspected, e.g.:
 Check the display.
 Check the switching function in connection with ex-
ternal 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 pa-
ked, preferably in the original factory packaging whene-
ver 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 depart-
ment.
Remaining medium in and on dismantled measuring in-
struments may cause danger to persons, environment
and equipment. Take reasonable precautions! Clean the
instrument thoroughly if necessary.
9 Assessories
 M12 connectors with pre-wired cable lengths
(on request)
 PC serial interface adaptor with software:
model EU03.F300
10 Disposal
P rote ct yo u r e nv iro n m e nt! Use the product
in accordance with relevant regulations.
Please be aware of environmental conse-
quences of disposal at the end of the pro-
duct's life, and take care accordingly.
8
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]

9
Measuring
range bar 0-1,000
max. static
operating
pressure
straight line
error (max.)°
bar
%FS
25 bar
2,50%
Straight line
error (typ.)°
Tc span
(max.)°°
Tc span
(typ.)°°
Tc zero point
(max.)°°
%FS
%FS /
10K
0,80%
0,40%
%FS /
10K
%FS /
10K
0,20%
0,50%
°: Straight line error = nonlinearity + hystere-
sis; at 25°C; pressure within specified range
(characteristic linear, not spreaded)
°°: Pressure within specified range (characte-
ristic linear, not spreaded); compensated tem-
perature range 0 to 60°C
Tc zero point
(typ.)°°
%FS /
10K 0,20%
Operating temp. (ambient) -10  70°C
Operating temp. (media)
Storage temperature
-10  70°C
-20  70°C
Protection class (housing)
Nominal supply voltage
IP 65 acc. to DIN EN 60529
E lectrical
24 V DC/AC
Operating supply voltage
Output signal
Output signal load
Power consumption
12  32 V DC/AC
4  20 mA square root
For output current RL (UB - 4 V) / 0,02 A (UB 26V), else RL 1100
Approx. 2 W/VA
Switching contacts
Display
2 sets of programmable voltage free relay contacts: NO or NC
Umax = 32 V DC/AC, Imax = 2 A, Pmax = 64 W/VA
3½ digit. LED
Electrical connections
C onne ctions
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
Materials, housing
at the upper part of the volume flow-measurement
M ate ria ls, M ounting
Polyamid PA 6.6
Materials, media contact
Mounting Aluminum hartcoat, VITON® Rear mounting holes for panel mounting
11 Specifications
11.1 General
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]

10
11.2 User- specific Data
Differential pressure transmitter DE38D410
Measurement range 0  1 bar
Static operating pressure 25 bar
Diaphragm and sealing of Viton
Pressure chamber Alu/hartcoat
output signal 4-20 mA square rooted, three-wire-system
Operating voltage 24 V DC/AC
3 ½-digit LED display
Display unit: bar, l/min., m³/h
2 voltage free relay contacts
Electrical connection M12-Stecker
Protection class IP65 nach DIN EN 60529
Mounting form as flow control device- top
Flender-works standard W3 5927
Housing cover blue RAL 5005
User-specific membrane keyboard with Flender-Logo
S ettings:
Input filtering
Relay / switch 1 / 2
0.0 ... 100.0 secs (10 / 90% step response time) for signal output,
display seperated
activation point, de-activation point, response time delay (0.0 ...
100.0 secs), logic (N/O or N/C)
Measurement unit selection
Zero suppression
Setting of oil-density
Zero pressure calibration
bar, l/min, m³/h
0 ... 100 Digits (1)
±100 counts (3)
Output characteristic
Password range linear, square rooted, horizontal cylindr. tank, table (3...30 entries) 001 ... 999 (000 = password protection disabled)
0,88
0,830 0,890,839 0,900,848 0,910,858 0,920,867 0,930,877 0,940,886 0,950,896 0,960,905 0,970,914 0,980,924 0,990,933 1,000,943 1,010,952 1,020,962 1,030,971 1,040,980 1,050,990
Oil density
differential pressure [bar]
"measuring range
20mA bei 0, xxx bar"
11.3 Programming
Via membrane key switches or by using PC-programming interface (accessory), programming mode can be pas-
word protected.
Notes:
(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.
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]

11
12 Dimensions (all units in mm unless stated otherwise)
Anschlussschema /
Schaltfunktion
view of rear side
rear side
M 12 connector
No. 1 M 12 connector No. 2
Electrical Connections /
Switching Outputs
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]

12
13 CE- Certificate
Contact: EK Engineering (www.ekeindia.com)
Email: [email protected]
Mob: [phone]