BD Sensors CIT 400 User manual

BD SENSORS GmbH
BD-Sensors-Straße 1 Telefon [phone] / 98 11- 0 www.bdsensors.de
D - 95199 Thierstein Telefax +49 (0) 92 35 / 98 11- 11 [e-mail]
Operating manual
Multifunctional Process Transmitter CIT 400 / CIT 401
Please read this operating manual carefully before installing and starting up
the device.
Important notes:
This operating manual must be kept at an accessible location for further
use.
The device may only be installed, used and serviced by persons who are
familiar with this operating manual as well as with the applicable regulations
on occupational safety and accident prevention.
CIT 400
front panel housing
CIT 401
top-hat rail housing

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CIT 400 / CIT 401
1. General....................................................................................................................................3
Table of contents
1.1 Information on the intended use.........................................................................................3
1.2 Target group......................................................................................................................3
1.3 Symbols used.....................................................................................................................3
1.4 Safety notes.......................................................................................................................3
1.5 Security note for the Ex-version of CIT 400.....................................................................3
1.6 Contents of packaging......................................................................................................4
2. Product identification ..............................................................................................................4
3. Installation................................................................................................................................5
3.1 General notes....................................................................................................................5
3.2 Special notes.....................................................................................................................5
3.3 Top-hat rail mounting........................................................................................................5
3.4 Front panel mounting..........................................................................................................5
3.5 Electrical installation .........................................................................................................5
3.6 Installation example............................................................................................................7
4. Overvoltage protection............................................................................................................8
5. Operation.................................................................................................................................8
5.1 Operating and display elements.........................................................................................8
5.2 Menu operation...................................................................................................................9
5.3 Description of the menu levels............................................................................................9
5.4 Structure of the menu system.............................................................................................9
5.5 Menu list...........................................................................................................................11
6. Error handling ........................................................................................................................16
7. Programming examples........................................................................................................16
7.1 Level measurement..........................................................................................................16
7.2 Interface level measurement ............................................................................................17
7.3 In bounds / out of bounds.................................................................................................18
7.4 Changing of pumps ..........................................................................................................19
8. Placing out of service ...........................................................................................................19
9. Service ..................................................................................................................................19
10. Recalibration.......................................................................................................................20
11. Repair..................................................................................................................................20
12. Disposal...............................................................................................................................20
13. Warranty conditions............................................................................................................20
14. Appendix .............................................................................................................................21
14.1 Declaration of conformity..............................................................................................21
14.2. EC type-examination for CIT 400 with Ex-protection..................................................22

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CIT 400 / CIT 401
1. General
•The multifunctional process transmitters CIT 400 and CIT 401 have been especially de-
veloped for the supply and data acquisition of 2- and 3-wire-sensors with current signal.
1.1 Information on the intended use
•The micro-controlled devices collect the signal of the sensor and show the measured
value in a 4-digit LED-display.
•For simple handling, the device features an extensive menu system with several menu
levels. The display can be freely programmed via 3 push-buttons in the touchpad, which
allow navigation through the menu system and feeding in values.
•The combination of independent limit value relays and freely scaleable analogue
output allows the solution of nearly every measurement task. The device is equipped
with a password access protection to permit operation of the complete menu system on-
ly to authorized persons.
•The available versions of housing allow mounting on top-hat rails and in front panels of
control cabinets.
•The CIT 400 with Ex-protection is designed for supplying intrinsically safe sensors in
explosive atmosphere of areas 0/1.
•The device shall be used according to the area of application specified above!
•No liability is assumed and warranty claims are not guaranteed in case of improper
application, modification of or damage to the device.
This operating manual is intended for qualified technical personnel.
1.2 Target group
: Caution : Note
1.3 Symbols used
The following notes must be observed to avoid hazards for the operator and his environ-
ment:
1.4 Safety notes
The device may only be installed, used and serviced by persons who are familiar with
this operating manual!
Applicable regulations regarding occupational safety, accident prevention and national
installation standards must be complied with!
The product must only be used within the specifications! (Compare the technical data in
the current data sheet.)
Install the device in the currentless condition!
When using the CIT 400 in intrinsic areas, the following additional demands must be fulfilled:
1.5 Security note for the Ex-version of CIT 400
For the installation, maintenance and cleaning of the device, you must absolutely ob-
serve the relevant regulations and stipulations on explosion protection (VDE 0160, VDE
0165 and EN 60,079-14, EN 50,014-50,020) as well as the occupational safety provi-
sions.

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CIT 400 / CIT 401
Have the installation, maintenance and cleaning of the devices only performed by per-
sons who are specifically trained and authorized for this purpose and who are familiar
with the devices!
Working on live parts, except for intrinsically safe circuits, is principally prohibited while
an explosion hazard is present.
Modifications on devices and connections void the explosion protection approval and
the warranty!
It is the responsibility of the user to verify whether the chosen device is suitable for the
intended application and the existing environmental conditions. BD SENSORS does not
assume liability for an incorrect selection and its consequences!
The technical data listed for the explosion sector correspond to the values certified in
the EC type-examination certificate.
The technical data of the EC type-examination certificate are listed in the appendix.
They are engaging and must absolutely be complied with.
For operation and maintenance work, the operator is obligated to observe the informa-
tion on the warning signs possibly affixed to the device.
Please verify that all listed parts are included in the delivery:
1.6 Contents of packaging
•Multifunctional Process Transmitter CIT 400 or CIT 401
•Operating Manual "CIT 400 / CIT 401"
•for front panel housing: additionally 2 screw-in clamps
The device can be identified by its type plate. It provides the most important data. By the
ordering code, the product can be clearly identified.
2. Product identification
Fig. 1 Type plate for devices without Ex-protection
Fig. 2 Type plate CIT 400 with Ex-protection
Type designation
Serial number
Signal
Ordering code
Input pressure
ranges
Year of
manufacture
Input
Output
Type designation
Serial
number
Safety technical
maximum values
Number of EC type-
examination certificate
Year of
manufacture
Ordering code
Input pressure
ranges
Ex-designation
Input

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CIT 400 / CIT 401
For identification of the firmware, the program version (e. g. P071) will appear for about 1
second in the display after starting up the device. Please hold it ready for inquiry calls.
3. Installation
•Do not use any force when installing the devices!
3.1 General notes
•Keep in mind that this device is an electronic precision measuring device. Handle the
device carefully and properly to avoid damages.
The transmitter mounting place has to be selected according to certain criteria.
Please avoid strictly:
3.2 Special notes
•direct sunlight (use weatherproof cover if necessary)
•heat emitting objects (max. ambient temperature: +40°C
•objects with strong electromagnetic fields (e. g. frequency converters)
•corrosive chemicals or gas
•mechanical shocks
•vibrations
•radioactive radiation
•installation close to footpaths or travel ways
Please observe the following points when selecting the measurement place:
•The installation surface must be free of vibrations.
•The ambient temperature must be between -20º C and +60 ºC, for Ex units between -20
°C and +40 °C
•Keep away from power lines or frequency converters (approx. 100 m).
The unit will be fastened by snapping it onto an installed DIN top-hat rail with a minimum
length of 70 mm.
3.3 Top-hat rail mounting
The front panel housing has to be fastened by using 2 screw-in clamps.
3.4 Front panel mounting
•Push the panel housing front sided into the panel cut-out as far as possible.
•Hang the 2 screw-in clamps into 2 opposed undercuts in the housing.
•After that tighten the two set screws while holding the screw-in clamps firmly with the other
hand.
For installation the lawful regulations of the respective country have to be observed.
3.5 Electrical installation
The power supply must be separately protected by a 6 A slow-blow fuse and has to be
isolated from other facility parts (separate turn-off, e. g. by using an automatic cut-out
with >B< characteristics).
Please note during installation that electronic components may be destroyed by electrostatic
bursts. Therefore, avoid high electrostatic charge by providing proper ground connection.

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CIT 400 / CIT 401
Before impressing the rated voltage, the transmitter and sensor installation must be correctly
completed and checked.
All outer circuits, wires and lines connected to the device must have a minimum isolation
resistance of 250 V. If the voltage exceeds 42 V DC, a minimum isolation resistance
of 500 kΩ is necessary.
The section dimension of the power supply wires must be 0.75 mm² in accordance to
IEC 227 or IEC 245. To observe the degree of ingress protection, please refer to the tech-
nical data in the appendix. The maximum switching voltage on the relay contacts must not
exceed 250 V. According to Ex-protection, you must check if the devices’ power supplies
have to be integrated into the emergency shutdown conception of the facility.
When installing the device, the different types of housing (top-hat rail and front panel) have
no effect on the denomination of the terminal clamps, only their locations will vary.
For the electrical connection, please note the device’s configuration.
One copper wire with a maximum cross section of 2.5 mm² can be connected per clamp.
Connection is made by using terminal clamps and a screwdriver with a 2.5 mm blade. The
terminal clamps are normally unscrewed on delivery. Nevertheless, this must be checked
before connecting the power supply or the signal wires.
Before first connection, it is necessary to have a slight pressure on the screw of the
clamping connection to ensure a safe opening and a correct connection.
CIT 400:
top-hat rail housing without Ex-protection top-hat rail housing with Ex-protection
front panel housing without Ex-protection front panel housing with Ex-protection
Fig. 3.1 Terminal clamps CIT 400

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CIT 400 / CIT 401
CIT 401:
top-hat rail housing top-hat rail housing
Fig. 3.2 Terminal clamps CIT 401
The power supply of the transmitter has principally not been drawn, but is mandatory. The
examples listed below represent only a selection of possible combinations between sensors
and CIT 400 or CIT 401.
3.6 Installation example
Example 1: CIT 400 with analogue output, Example 2: CIT 400 with analogue output
supplied by a 2-wire-sensor; with alarm relay supplied by a 3-wire-sensor; with alarm relay
Fig. 4 CIT400 with 2-wire-sensor Fig. 5 CIT 400 with 3-wire-ultrasonic-sensor
Example 3: CIT 400 as transmitter, when supplied with voltage signals from a pickup or to
simulate an external sensor with voltage output at the CIT 400.
Fig. 6 CIT 400 with pickup feeding a mA-signal
The examples are based on the CIT 400; CIT 401 has a pin configuration different from
the analogue output.
Limit value
message
Rel. 1
Writer
Display
Limit value
message
Rel. 1
Writer
Display
Limit value
message
Rel. 1
Writer
Display
Sensor
4-20 mA

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CIT 400 / CIT 401
For effective protection of the process transmitters, it is necessary to protect power supply and
mA outputs by using overvoltage protection devices. We recommend:
4. Overvoltage protection
- Data Pro 2x1 24 V/24 V for potential-free (galvanically isolated) data lines, 25 A leakage
current as well as automatic self-control by failsafe diodes, which interrupt the current
signal in case of error and cause an error message, given out by the process transmitter.
- Ener Pro 220 Tr for 230 V power supply of the process transmitter. Leakage current 20.000 A
and high capacity (up to 16 A) for safe and durable protection of several devices simulta-
neously.
Fig. 7 Overvoltage protection Fig. 8 Overvoltage protection
of analogue inputs of analogue outputs
Fig. 9 Overvoltage protection of power supply
Please pay attention to the non-reversed connection of the Data Pro (p-side to transmitter) as
well as to a correct, straight wiring supply. The grounding (earth) must lead to the unprotected
side. The cross section of the ground wire should be 6 mm² at least!
5. Operation
CIT 400 CIT 401
5.1 Operating and display elements
Fig. 10 Touchpad
LED Alarm
"▼" - button
"▲" - button
display
LED relay 1
LED relay 2
Enter-
button
Sensor supply
Analogue
output
Writer
Display
Supply
LED relay 1
LED relay 4
LED relay 2
LED relay 3

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CIT 400 / CIT 401
The touchpad of the process transmitter was designed to be user-friendly. So even an un-
trained user will be able to carry out easily all fundamental tasks which ensure a correct op-
eration of the unit. The indication of the measured value as well as the configuration of the
individual parameters occur through a menu via the display. The individual functions can be
set with the help of three miniature push buttons located in the front.
The menu system is a closed system allowing you to scroll both forward and backward through
the individual set-up menus to navigate to the desired setting item. To leave a menu item, push
the Enter-button. To leave the menu system completely, the last menu item has to be scrolled
over or you will have to wait until the device changes automatically to display mode (about
1 minute after pushing a button). All settings are permanently stored in an EEPROM and there-
fore available again even after disconnecting the device from the supply voltage.
5.2 Menu operation
•"▲" button: with this button you move forward in the menu system or increase the dis-
played value; it will also lead you to operating mode
•"▼" button: with this button you move back in the menu system or decrease the displayed
value; it will also lead you to operating mode
•Enter-button: with this button the menu levels can be entered to reach the menus items;
use this button also to confirm the menu items and the set values
There are 8 menu levels, which can be chosen separately.
Paof = password protection
diSP = display
SinP = signal input (analogue input)
Lin = linearization
rELn = contacts (relays)
Aout = analogue output
tESt = simulation- / testing mode
ALLG = unit parameters
CAL = calibration
5.3 Description of the menu levels
The menu system and the menu items have been designed as simply as possible. Each indi-
vidual menu item is described below in detail allowing a straightforward and quick configuration
of your device. The structure of the menu systems for the process transmitters CIT 400 and
CIT 401 is identical. The CIT 401 deviates from the other by the gray marked menus, which are
not available with CIT 400.
5.4 Structure of the menu system
Please follow the manual meticulously and remember that changes of the adjustable pa-
rameters become only effective after pushing the "OK" button and after leaving the menu
item. If an error message appears in the display after pushing the enter-button, the set
value will not be stored.

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CIT 400 / CIT 401
Fig. 11 Menu system P074
Display mode
(measured value is
displayed)
Parameters for
calibration
Menu CAL
Parameters of the
display
Menu diSP
Parameters of
signal input
Menu SinP
Parameters of
contacts
Menu rELn
Parameters of
analogue output
Menu Aout
Simulation/
testing mode
Menu tESt
Unit
parameters
Menu ALLG
Password
activation
Menu PAoF
Scaled measure-
ment values
Menu diS1
Starting point of
measuring range
Menu ZPin
Switching mode
hysteresis/compare
Menu HY1/CP1
Output
signal
Menu outY
Status
relay 1
Menu R1Si
Relais
exchange
Menu CHAn
Adjusting signal
input of offset
Menu SioF
1
up to
4
Input signal
in mA
Menu diS2
End point of
measuring range
Menu EPin
Switching point
relay 1
Menu S1on
Input signal
in %
Menu diS3
Reset point
relay 1
Menu S1of
Output signal
in %
Menu diS4
Contact inverting
relay 1
Menu In1
Scaled value
with offset and
display offset
Menu diS5
Switch-on delay
relay 1
Menu D1on
Output signal
in mA
Menu diS6
Switch-off delay
relay 1
Menu D1of
Switching mode
hysteresis/compare
Menu HY2/CP2
Switching point
relay 2
Menu S2on
Reset point
relay 2
Menu S2of
Contact inverting
relay 2
Menu In2
Switch-on delay
relay 2
Menu D2on
Switch-off delay
relay 2
Menu D2of
min. measured
value
Menu ZPou
Status
relay 2
Menu R2Si
Password
setting
Menu PAnr
Adjusting signal
input of span
Menu SiSP
max. measured
value
Menu EPou
Status
alarm relay
Menu ALSi
Default
setting
Menu LoAD
Status
analogue output
Menu AnSi
On
OFF
On
OFF
On
OFF
0 mA
4 mA
20 mA
freely selectable (Si)
Decimal point
position
Menu dP
Switching mode
hysteresis/compare
Menu HY3/CP3
Switching point
relay 3
Menu S3on
Reset point
relay 3
Menu S3of
Contact inverting
relay 3
Menu In3
Switch-on delay
relay 3
Menu D3on
Switch-off delay
relay 3
Menu D3of
Switching mode
hysteresis/compare
Menu HY4/CP4
Switching point
relay 4
Menu S4on
Reset point
relay 4
Menu S4of
Contact inverting
relay 4
Menu In4
Switch-on delay
relay 4
Menu D4on
Switch-off delay
relay 4
Menu D4of
OFF
2
3
4
Parameters for
linearization
Menu Lin
Linearization
on / off
Menu Lin on/ off
Number of
supporting point
Menu n
Status
relay 3
Menu R3Si
On
OFF
Status
relay 4
Menu R4Si
On
OFF
Supporting point
input signal
Menu in n
Supporting point
output signal
Menu ou n
Number of supporting point: n = 2 ... 32
"n" stands for the number of the supporting point

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CIT 400 / CIT 401
Menu level diSP - parameter of the display (mode)
The menus "dIS1" to "dIS6" determine the display mode.
Display - scaled measurement value
5.5 Menu list
dIS1
Indicates the scaled measurement value on the display. The indicated
value may vary between 0.000 and 9999. Confirm with Enter after select-
ing "dIS1" in order to activate this mode.
Display - input in mA
dIS2
Indicates the input signal in mA on the display. In this mode, the unit vir-
tually operates as a mA-meter which indicates the sensor current. Con-
firm with Enter after selecting "dIS2" in order to activate this display
mode.
Display - input in %
dIS3
Indicates the input signal as percentage on the display. The value ranges
between 0 and 100 % and has a direct r
elation to the sensor signal
which varies within a range of 4 to
20 mA. Confirm with
Enter after selecting "dlS3" in order to activate this display mode.
Display - analogue output in %
dIS4
Indicates the output signal as percentage on the display. The value
ranges between 0 and 100 % and has a direct relation to the analogue
output of the transmitter which varies within a range of 4 to 20 mA (de-
pending on the value selected in menu
"outY"). Confirm with Enter after
selecting "dlS4" in order to activate this display mode.
Display - scaled measurement value with offset and display offset
dIS5
Indicates the scaled measurement value with the added offset on the
display. The indicated value may vary between 0.000 and 9999. The dis-
play offset must be entered in the menu "dIS5". Con
firm with Enter after
selecting "dlS5" in order to activate this display mode. The value set here
will be used as display offset and will be added to the investigated meas-
urement value. Use the arrow keys to enter the numeric value and con-
firm with Enter.
Display - output in mA
dIS6
Indicates the output signal in mA on the display. In this mode, the unit
virtually operates as a mA-meter which represents the analogue
output
of the transmitter. This is essential for the user to check the signal circuit
to operate correctly and if subsequent evaluation u
nits indicate the same
values. Confirm with Enter after selecting "dlS6" in order to activate this
display mode.

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CIT 400 / CIT 401
Menu level SinP - parameter of signal input (analogue input)
The subordinate menu items are used to define the measurement span of the analogue input
for 4 mA and 20 mA.
Signal input - starting point of measuring range
ZPIn
The measurement value for the analogue input at 4 mA must be entered
here. Normally this value is 0, which means 0 m at 4 mA
in case of a
pressure probe with a measurement range of 0 to 6 m water col
umn
height. Use the arrow keys to enter the nu
meric value and confirm with
Enter.
Signal input - end point of measuring range
EPIn
The measurement value for the analogue input at 20 mA must be en-
tered here. Normally this is the maximum measurement span, resulting
from the example above, i. e. a value of 6. Use the ar
row keys to enter
the numeric value and confirm with Enter.
Signal input - decimal point position
dP
Here you can define the decimal point position. Use the arrow keys to
move the decimal point and confirm with Enter.
Menu level Lin - parameter of the linearization
Via this menu level, you can linearize the input signal (sensor) by a supporting point. This func-
tion is essential when the sensor signal is not linear to the output signal of the process transmit-
ter. By this function, it is possible to get an output signal nearly linear to the filling volume in ir-
regular shaped tanks.
Linearization - activation / deactivation
Lion/Liof
With this menu, the linearization can be switched on or off. In the switch-
off mode, the supporting points are not taken into account.
Linearization - number of supporting points
n
In this menu, the number of supporting points has to be set. The permis-
sible range is set from 2 to 32 supporting points.
Linearization - input signal of supporting points
in n
In this menu, the first part of the supporting points has to be defined,
whereas "n" in the menu designation is replaced by the num
ber of the
supporting point (in 1, in 2, ... in32). The sensor signal of
the respective
supporting point which lies on the input must be entered. In the following
menu, the corresponding output signal must be set. The input
value is
based on the scaling limits defined in the menu level SinP.
Linearization - output signal of the supporting points
ou n
In this menu, the second part of the supporting points has to be defined,
whereas "n" in the menu designation is replaced by the value of the re-
spective supporting point (ou 1, ou 2, ... ou32). The value has to be en-
tered corresponding to the value for reaching a supporting point. Be-
tween two supporting points, the course is linear. Please note that
the
supporting points must be entered in ascending sequence, i. e. the value
for n+1 has to be higher than the value for n. The output signal on the
analogue output is developed by the indicated value, whereas the pa-
rameters from the menu level Aout are used.

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CIT 400 / CIT 401
Menu level rELn - parameter of the contacts (relais)
The menu items of this level are responsible for the limit value settings and the switching beha-
viour of the relays. Since the menus for the relays have been conceived identically, the descrip-
tion is the same for all menus. This menu level can be called up by pressing Enter like any other
menu. After that, the respective relay must be selected. This can be achieved by selecting the
numbers of the relay with the arrow keys. Confirm your selection with Enter (CIT 400 features 2
relays; CIT 401 features 4 relays).
Contacts - switching mode hysteresis/compare
HY 1 / CP 1
HY 2 / CP 2
HY 3 / CP 3
HY 4 / CP 4
With this menu, you can define the switching logic of the relays. It is pos-
sible to select between the so-called hysteresis mode HY X
(limit level)
and the compare mode CP X (in bounds/out of bounds). Select with ar-
row keys as usual –
HYon indicates the selected hysteresis mode (limit
level). CPon will indicate the window mode (in bounds/out of bounds).
Confirm with Enter. (compare 7. Programming examples)
Contacts - switching point
S1on
S2on
S3on
S4on
This menu defines the upper switching point of the respective relay. The
programming example shows the function of this menu
. In hysteresis
mode (limit level), this value determines e. g. the turn-on po
int. In window
mode (in bounds/out of bounds), this value determines e.
g. the in
bounds upper switching point. The value can be set using the arrow keys.
Confirm with Enter.
Contacts - reset point
S1of
S2of
S3of
S4of
This menu defines the lower switching point of the respective relay. The
programming example shows the function of this menu
. In hysteresis
mode (limit level), this value determines e.
g. the reset point. In compare
mode (in bounds/out of bounds), this value determines e.
g. the in
bounds low
er switching point. The value can be set using the arrow keys.
Confirm with Enter.
Contacts - inverting
In 1
In 2
In 3
In 4
This menu allows you to invert the relay position. In hysteresis mode
(limit level), the upper and lower switching points will be c
hanged. In
window mode (in bounds/out of bounds), the switching behaviour
will
change from in bounds to out of bounds. Please note that this determina-
tion is valid only in case of activated auxiliary power,
as the relay has to
be powered with auxiliary power depen
ding on the parameter setting.
Relay inversion will be set by using the arrow keys. "St" in the display
indicates the standard position, "In" the inverted relay position.
Confirm
the setting with Enter.
Contacts - switch-on delay
D1on D2on
D3on D4on
This menu is used to define a switch-on delay within a range from 0 to
100 seconds for the selected relay. Set the delay with the ar
row keys
and confirm with Enter.
Contacts - switch-off delay
D1of D2of
D3of D4of
With this menu, you can define a switch-off delay within a range from 0
to 100 seconds for the selected relay. Set the delay with the arrow keys
and confirm with Enter.

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CIT 400 / CIT 401
Menu level Aout - analogue output
The settings for the analogue signal output are determined in the menu items.
Analogausgang - output signal
outY
This menu defines the output signal range. You can choose between
the following settings: 4-20 mA, 0-20 mA, 20-4 mA and 20-0 mA. Se-
lect by using the arrow keys and confirm with Enter.
Analogue output - minimum measurement value
ZPou
In this menu, you can enter the minimum measurement value which
should correspond to the analogue output signal, e. g. 0 meters.
If the
sensor reaches this value, the output will be e.
g. 4 mA if the signal
range in menu "outY" was set to 4-20 mA.
Analogue output - maximum measurement value
EPou
Enter the maximum measurement value which has to correspond to
the analogue output signal here. If, for example,
"ZPIn" and "EPIn" of a
pressure sensor are given with 0 up to 6 meters, the menu
"EPou" can
be set on 5 meters. If the sensor reaches this value, the output will be
e. g. 20 mA if the signal range in menu "outY" was set to 4-20 mA.
Menu level tESt - simulation / testing mode
In this menu level, all test and simulation menus are located. The simulation options cover a
manual relay control as well as an analogue output signal simulation.
Simulation - status of the relays
R1SI
R2SI
R3SI
R4SI
ALSI
This menu is used to simulate the relay conditions. Menu "ALSI" is re-
sponsible for the alarm relay. By using the arrow keys, it is pos
sible to
simulate the "energized" (ON) and "de-energized" (OFF) condition
. The
relay will change its condition immediately after selection. Pressing En-
ter will exit the respective simulation menu.
Simulation - status of the analogue output
AnSI
The signal value of the analogue output can be simulated using this
menu. You can pre-set the fixed values 0 mA, 4 mA, 20 mA and vari-
able values. In order to set a variable signal value,
use the arrow keys
to move to screen "SI" meaning output value si
mulation. Press Enter
and "12.00" mA will appear as simulation value. Now you can set
with
the arrow keys the signal value to
be rendered on the signal output after
pressing the Enter key. Abort simulation by leaving this menu.

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CIT 400 / CIT 401
Menu level ALLG - unit parameter
Menu level contains general unit parameters.
Unit parameter - relay exchange
CHAn
With this menu, you can set the exchange of used relays if they reach a
defined value. The background of this function is a pump exchange in
order to achieve a regular pump load (capacity utilisation).
By changing the relays,
both pumps will be activated on reaching the
next turn-on point. With CIT 400,
this function can be switched on and
off. With CIT 401, values 2, 3, 4, and OFF can be set. The value
gives
the number of used relays for the changing.
Unit parameter - password setting
PAnr
This menu defines the unit password (PIN). Set the number by using the
arrow keys and confirm with Enter. To activate the password,
use menu
"PAoF".
The default setting for the password is "5".
Unit parameter - default setting
LoAd
The unit’s factory default settings can be loaded by using this menu. In
order to execute this function, you should know the pass
word (PIN). If
this function is selected, the unit will wait for PIN en
try. The function will
not be executed until a correct entry of the password. The default set-
ting for the password is "5".
Please note that also the password is reset to default.
Menu level CAL - calibration
This level is for self-calibration of the analogue input to the lower and upper sensor signal
(4/20 mA). You can choose between single and double point calibration.
Calibration - adjusting signal input of offset
SIof
With this menu, you can adjust the zero point of the transmitter
(4 mA) to the applied sensor signal. To start the calibration, it is neces-
sary to enter the password. For this, the minimum output sig
nal (output
of the min. measurement span of the sensor) must be applied to the
transmitter input.
Calibration - adjusting signal input of span
SISP
With this menu, you can adjust the final value of the measurement span
(20 mA) to the applied sensor signal. To start the calibration, it is nec-
essary to enter the password. For this, the maximum output signal (out-
put of the max. meas
urement span of the sensor) must be applied to
the transmitter input.

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CIT 400 / CIT 401
If you detect an error, please try to eliminate it by this table or send the device to our service
address for repair.
6. Error handling
Repairs on the device may only be performed by the manufacturer!
Please note that the display offset has to be set on "0" in the examples.
7. Programming examples
Compare "dIS5" under "5.5 menu list".
given: tank (max. level 7 m); medium: water; probe 4-20 mA; measuring range 10 m
required: indication of measurement value, pen recorder on analogue output (4-20 mA),
final peak of pen recorder 20 mA at 7 m
7.1 Level measurement
The process transmitter has to indicate the max. filling level of the tank (7 m).
Error messages
Possible cause
Error corrective
Err
- cable break between sensor on
analogue input
- mechanical sensor damage and there-
fore interruption
- sensor damage
-> current on analogue input below 3.3 mA
- check cable for damage
- exchange cable or sensor if
necessary
Err
- sensor electronics damaged
- supplying too high current
- cable short circuit or connection box
causes current higher than 22 mA on
analogue input due to humidity or
damaged terminal clamps.
-> current on analogue input higher than
3.3 mA
- check cable for damage
- exchange cable or sensor if
necessary
Heavy fluctua-
tion of mea-
surement val-
ues
- cable damaged
- contacting problems due to cable
extension
- connection box or similar
- humidity in the cable
- sensor damage
- check all contacts and
connections
- replace filter on cable end
- check connection box for
humidity ingress
measuring range
0 up to 10 m
measuring range
0 up to 10 m

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CIT 400 / CIT 401
Programming:
Select the menu "dlS1" in the menu level "dlSP".
Set the following values in the menu level "SInP":
ZPIn = 0 (starting point of measuring range)
EPIn = 10 (end point of pressure range)
dP = 2 (decimal point position)
Set the following values in the menu level "Aout":
outY = 4-20 (output signal in mA)
ZPou = 0 (min. measured value)
EPou = 7 (max. measured value)
given: tank (max. level 7 m); medium: water, probe 4-20 mA, measurement range 10 m
required: pen recorder on analogue output 4-20 mA, final peak of pen recorder 20 mA at 7 m;
the process transmitter has to indicate the max. filling level of the tank; relay 1 should
have the function of a limit value switch (on = 6 m; off = 5 m)
7.2 Interface level measurement
Please note that the values in "S1on" and "S2on" usually have to be higher than the
values in "S1of" and "S2of". To exchange the switching points, please use the menu
contact inverting ("In 1" and "In 2")
switch-on point > switch-off point switch-on point < switch-off point
Programming
Select the menu "dlS1" in the menu level "dlSP".
Set the following values in the menu level "SinP":
ZPIn = 0 (starting point of measuring range)
EPIn = 10 (end point of pressure range)
dP = 2 (decimal point position)
Select the menu "1" in the menu level "rELn" and set the following values:
HY 1/CP 1 = HYon (hysteresis mode)
S1on = 6 (switching point relay 1)
S1of = 5 (reset point relay 1)
In1 = St (Set point inverting relay 1)
Set the following values in the menu level "Aout":
outY = 4-20 (output signal in mA)
ZPou = 0 (min. measured value)
EPou = 7 (max. measured value)
ON
S1on / S2on
OFF
S1of / S2of
OFF
ON
ON
OFF
OFF
S1on / S2on
ON
S1of / S2of
ON
OFF
OFF
ON

18
CIT 400 / CIT 401
given: tank (max. level 7 m); medium: water; probe 4-20 mA; measuring range 10 m
required: pen recorder on analogue output 4-20 mA, final peak of pen recorder 20 mA at 7 m;
the process transmitter has to indicate the max. filling level of the tank, relay 1 should
have the function of an out of bounds switch and relay 2 the function of an in bounds
switch (bound between 3 m and 4 m)
7.3 In bounds / out of bounds
For using the out of bounds function, the menu "In 1" has to be set on "In".
Please note that the values in "S1on" and "S2on" usually have to be higher than the
values in "S1of" and "S2of". To exchange the switching points, please use the menu
contact inverting ("In 1" and "In 2")
in bounds function out of bounds function
Programming
Select the menu "dlS1" in the menu level "dlSP".
Set the following values in the menu level "SinP":
ZPIn = 0 (starting point of measuring range)
EPIn = 10 (end point of pressure range)
dP = 2 (decimal point position)
Select the menu "1" in the menu level "rELn" and set the following values:
HY 1/CP 1 = CPon (window mode)
S1on = 4 (switching point relay 1)
S1of = 3 (reset point relay 1)
In1 = In (set point inverting relay 1)
Select the menu "2" in the menu level "rELn" and set the following values:
HY 2/CP 2 = CPon (windows mode)
S2on = 4 (switching point relay 2)
S2of = 3 (reset point relay 2)
In2 = St (no inverting of relay 2)
Set the following values in the menu level "Aout":
outY = 4-20 (output signal in mA)
ZPou = 0 (min. measured value)
EPou = 7 (max. measured value)
ON
S1on / S2on
OFF
S1of / S2of
ON
OFF
S1on / S2on
ON
S1of / S2of
OFF

19
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CIT 400 / CIT 401
given: tank (max. level 7 m); medium: water; probe 4-20 mA; measuring range 10 m
required: pen recorder on analog output 4-20 mA, final peak of pen recorder 20 mA at 7 m;
the process transmitter has to indicate the max. filling level of the tank (7 m); relay 1
should have the function of a limit value switch (on = 6 m; off = 5 m) with a switch-on
delay of 10 seconds; alternating with relay 2 (on = 6 m; off = 4.5 m)
7.4 Changing of pumps
Please note that the values in "S1on" and "S2on" usually have to be higher than the
values in "S1of" and "S2of". To exchange the switching points, please use the menu
contact inverting ("In 1" and "In 2")
Programming
Select the menu "dlS1" in the menu level "dlSP".
Set the following values in the menu level "SinP":
ZPIn = 0 (starting point of measuring range)
EPIn = 10 (end point of pressure range)
dP = 2 (decimal point position)
Select the menu "1" in the menu level "rELn" and set the following values:
HY 1/CP 1 = HYon (hysteresis mode)
S1on = 6 (upper switching point 1)
S1of = 5 (lower switching point 1)
In1 = In (inverting of relay 1)
d1on = 10 (switch-on delay in seconds)
Select the menu "2" in the menu level "rELn" and set the following values:
HY 2/CP 2 = HYon (hysteresis mode)
S2on = 6 (upper switching point 2)
S2of = 4.5 (lower switching point 2)
In2 = In (inverting of relay 2)
d2on = 10 (switch-on delay in seconds)
Set the following values in the menu level "Aout":
outY = 4-20 (output signal in mA)
ZPou = 0 (min. measured value)
EPou = 7 (max. measured value)
Select the menu "ALLG" and set the following values:
CHAn = On (change relays)
When dismantling the device, this must always be done in the depressurized and
currentless condition!
8. Placing out of service
This device is maintenance-free.
If desired, the device can be cleaned using non-aggressive cleaning solutions. Clean the hous-
ing with a dry lint-free cloth if necessary. When cleaning the enclosure surface with a wet cloth,
first disconnect the device from mains.
9. Service

20
CIT 400 / CIT 401
During the life-time of the device, the offset may shift. As a consequence, a deviating signal val-
ue in reference to the nominal pressure range starting point may be transmitted.
The full scale may also shift. This would cause a signal value of the pressure switch to be
transmitted that deviates from the nominal pressure range end point.
If one of these two phenomena occurs after prolonged use, a recalibration is recommended to
ensure furthermore high accuracy.
You can send us the device for recalibration. It is also possible to perform this recalibration by
yourself with the help of a pressure reference. The required information is given in the menu
"CAL" in the menu list.
10. Recalibration
If there are malfunctions which cannot be eliminated the device should be sent to us for re-
pair. Before that the device has to be cleaned carefully and packed shatter-proofed. You
have to enclose a note of return with detailed defect description when sending the device. If
your device came in contact with harmful substances, a declaration of decontamination is
additionally required. Appropriate forms can be downloaded from our homepage
www.bdsensors.com. Should you dispatch a device without a declaration of decontamina-
tion and if there are any doubts in our service department regarding the used medium, repair
will not be started until an acceptable declaration is sent.
11. Repair
If the device came in contact with hazardous substances, certain precautions
have to be complied with for purification!
Our service address:
BD SENSORS GmbH
Serviceabteilung
BD-Sensors-Str. 1
95199 Thierstein
Germany
The device must be disposed according to the European Directives 2002/96/EC
and 2003/108/EC (on waste electrical and electronic equipment). Waste of
electrical and electronic equipment may not be disposed by domestic refuse.
12. Disposal
Special consideration is required for the disposal if the device has
been in contact with hazardous substances!
The warranty conditions are subject to the legal warranty period of 24 months from the date of
delivery. In case of improper use, modifications of or damages to the device, we do not accept
warranty claims. Furthermore, defects due to normal wear are not subject to warranty services.
13. Warranty conditions