WELBA WTS-200 User manual

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PRODUCT-INFO
© by WELBA - 12.05.2020
UNIVERSAL
TANK CONTROL UNIT
for milk cooling tanks, PC programmable
Measuring - Controlling - Regulating
All from the same source
Programmable via
configuration software
WELBA „KONSOFT"
WTS-200

Advantages
of using the WTS-200
at a glance
!Modification / improvement of the existing
technique
!Replacement of the existing switch boxes
!Useable for all tanks
!Easy operation and assembly
!Can be parameterized via PC
!Future-proof – because updatable
Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
Operation concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
Configuration Software KONSOFT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7
Parameterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
Functional description COOLING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
Functional description CLEANING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 10
Technical Data / Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
Connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13
Customer-specific designs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14
Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15
Content

Advantages
of using the WTS-200
at a glance
!Modification / improvement of the existing
technique
!Replacement of the existing switch boxes
!Useable for all tanks
!Easy operation and assembly
!Can be parameterized via PC
!Future-proof – because updatable
Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 4
Operation concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 6
Configuration Software KONSOFT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7
Parameterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 8
Functional description COOLING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
Functional description CLEANING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 10
Technical Data / Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 12
Connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 13
Customer-specific designs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 14
Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 15
Content

The WTS-200 is a combined cooling and clean-
ing control unit for closed milk-cooling tanks.
It offers a top-quality milk cooling regulator which
controls the agitator and compressor / evapora-
tor valves. Other features include an adjustable
cooling start delay and cooling time monitoring
for the first milking, together with automatic
after-stirring and press-button switching be-
tween target temperatures.
The complete cleaning timer controlling water
valves, washing pump, heater, outlet valve etc.
offers a full range of adjustable parameters. The
cleaning programme is flexible and comprises
up to six separate rinses, each of which can be
repeated several times. If only one main wash
per cleaning programme is chosen, there is an
additional option to determine how many times
cleaning should take place with alkaline deter-
gent before the tank is cleaned with acidic deter-
gent.
Water intake is by level or by time, as preferred.
Outlet valves can be programmed to be “de-
energised open” or “de-energised closed”.
During cleaning a connected robot is switched
off by the WTS-200's “Cleaning active” signal.
After cleaning, the robot restarts the cooling
process via a digital input signal.
As an extension to the functions of the WTS-
100-2, the WTS-200 has an RS-485 interface
and can thus be parameterised and updated via
the "Welba-Konsoft" Software.
In addition, the temperature developments can
be graphically displayed, recorded and printed
on request.
- Page 4 - - Page 5 -
optional
PC
parameterized
USB
interface
remote
maintenance
Combined cleaning and milk cooling control
for all common milk cooling tanks
Device descriptionDevice description
Die WTS-200 is suitable for
horizontal milk
cooling tanks
vertical milk
cooling tanks
(silos)
conventional
milking systems
Milking systems
with robots
for direct evaporators + ice water cooling
For robots:
Signal „Cleaning active“
+ remote start cooling
Functions at a glance
agitating
automatic
heatingcleaningcooling
SMS-alarm message / remote maintenance / remote diagnosis
Via the optional Welba-SMS- alarm and remote maintenance
modem it is possible to:
,transfer fault messages of the control via SMS to a mobile
phone
,carry out a remote maintenance of the control
,carry out a remote diagnosis of the control
Optional
optional
SMS
optional

The WTS-200 is a combined cooling and clean-
ing control unit for closed milk-cooling tanks.
It offers a top-quality milk cooling regulator which
controls the agitator and compressor / evapora-
tor valves. Other features include an adjustable
cooling start delay and cooling time monitoring
for the first milking, together with automatic
after-stirring and press-button switching be-
tween target temperatures.
The complete cleaning timer controlling water
valves, washing pump, heater, outlet valve etc.
offers a full range of adjustable parameters. The
cleaning programme is flexible and comprises
up to six separate rinses, each of which can be
repeated several times. If only one main wash
per cleaning programme is chosen, there is an
additional option to determine how many times
cleaning should take place with alkaline deter-
gent before the tank is cleaned with acidic deter-
gent.
Water intake is by level or by time, as preferred.
Outlet valves can be programmed to be “de-
energised open” or “de-energised closed”.
During cleaning a connected robot is switched
off by the WTS-200's “Cleaning active” signal.
After cleaning, the robot restarts the cooling
process via a digital input signal.
As an extension to the functions of the WTS-
100-2, the WTS-200 has an RS-485 interface
and can thus be parameterised and updated via
the "Welba-Konsoft" Software.
In addition, the temperature developments can
be graphically displayed, recorded and printed
on request.
- Page 4 - - Page 5 -
optional
PC
parameterized
USB
interface
remote
maintenance
Combined cleaning and milk cooling control
for all common milk cooling tanks
Device descriptionDevice description
Die WTS-200 is suitable for
horizontal milk
cooling tanks
vertical milk
cooling tanks
(silos)
conventional
milking systems
Milking systems
with robots
for direct evaporators + ice water cooling
For robots:
Signal „Cleaning active“
+ remote start cooling
Functions at a glance
agitating
automatic
heatingcleaningcooling
SMS-alarm message / remote maintenance / remote diagnosis
Via the optional Welba-SMS- alarm and remote maintenance
modem it is possible to:
,transfer fault messages of the control via SMS to a mobile
phone
,carry out a remote maintenance of the control
,carry out a remote diagnosis of the control
Optional
optional
SMS
optional

Configuration
Parameterization
Visualization
Storing
Updating
Remote maintenance
Parameterizing
Retrieving of data
Evaluation of data
Remote-maintenance
Updating
Function overview
- Page 6 - - Page 7 -
T1 T2
°C
Mode
Configuration Software
WELBA KONSOFT
Operating concept
Start of cooling
Can be done by
robot or automati-
cally
Continuous stirring
To stir the milk before
collection
Start of cleaning
Should be done by the
driver of the milk truck
after milk has been
collected
The simple operating concept
With the WELBA Configuration Software
"KONSOFT", the WTS-200 can be conveniently
configured and the measuring- and control-
values can be clearly visualized.
Parameterizing
All setting parameters can be entered and stored
on a level-related basis on your PC in a clear
operation mask. For each parameter a “descrip-
tion text” is deposited.
Once all parameters have been entered, the
complete configuration can be transferred to the
WTS-200 via USB interface.
Visualization
Measured values from the WTS-200 can also be
read out via USB-transmission and displayed
and stored graphically or in tabular form on the
screen. Thus a fast fault analysis is possible.
Bootloading function
By touching a button the WTS-200 can be
updated to the new operating Software.
!Simple and proven operation
!can be parameterised via PC
!3-digit LED display
!Switch status displays for cooling and cleaning processes
!Robust foil keyboard
!Digital inputs for
- Safety switch (milking and cooling)
- Remorte start cooling
- Fault messages
!Automatic parameter storing without data loss in case of power failure
!Water detection via integrated level monitor

Configuration
Parameterization
Visualization
Storing
Updating
Remote maintenance
Parameterizing
Retrieving of data
Evaluation of data
Remote-maintenance
Updating
Function overview
- Page 6 - - Page 7 -
T1 T2
°C
Mode
Configuration Software
WELBA KONSOFT
Operating concept
Start of cooling
Can be done by
robot or automati-
cally
Continuous stirring
To stir the milk before
collection
Start of cleaning
Should be done by the
driver of the milk truck
after milk has been
collected
The simple operating concept
With the WELBA Configuration Software
"KONSOFT", the WTS-200 can be conveniently
configured and the measuring- and control-
values can be clearly visualized.
Parameterizing
All setting parameters can be entered and stored
on a level-related basis on your PC in a clear
operation mask. For each parameter a “descrip-
tion text” is deposited.
Once all parameters have been entered, the
complete configuration can be transferred to the
WTS-200 via USB interface.
Visualization
Measured values from the WTS-200 can also be
read out via USB-transmission and displayed
and stored graphically or in tabular form on the
screen. Thus a fast fault analysis is possible.
Bootloading function
By touching a button the WTS-200 can be
updated to the new operating Software.
!Simple and proven operation
!can be parameterised via PC
!3-digit LED display
!Switch status displays for cooling and cleaning processes
!Robust foil keyboard
!Digital inputs for
- Safety switch (milking and cooling)
- Remorte start cooling
- Fault messages
!Automatic parameter storing without data loss in case of power failure
!Water detection via integrated level monitor

- Page 8 - - Page 9 -
!Two separate switching stages for con-
trolling agitator motor and compressor
!Complete milk cooling control with auto-
matic stirring
!Cooling start by robot possible
!Permanent stirring function
!Cooling start delay
!Cooling time monitoring
!Target temperature switchover
!Stand-by function
(agitator and compressor off)
The milk cooling function of the WTS-200 includes
all features that a modern cooling tank control
should offer.
The control can be used for all common tank
models.
It supports both, the devices with compressor
(direct-evaporator) and those with ice-water-
cooling.
The activation of the cooling process can be done
in different ways:
,manually via button „START COOLING“
, via digital input „Remote start cooling“ (from
the robot or external button)
The cooling starts now according to pre-set
starting modes:
!Direct or
!with cooling start delay,
The control can be parameterized so that after the
cooling mode is triggered, the start of the compres-
sor is delayed in order to prevent freezing of small
quantities of milk in the tank. This delay takes
place at the first milking only - after the cleaning.
Operation mode
Parameterization
The control unit has various operating modes:
!OFF mode (tank empty)
The control unit is on stand-by. The display shows 'OFF', the LEDs are out and all
output replays are deactivated..
The following operating modes can only be selected from the OFF mode. It is not
possible to switch directly from one of them to another.
!Cooling mode
The current milk temperature, as measured, is permanently displayed.
It is possible to switch between two freely adjustable target temperatures by pressing a
button. If the milk temperature exceeds the selected target temperature (T1 or T2) by
the hysteresis value, the compressor relay and agitator are automatically activated.
Once the target temperature is reached, the compressor switches off, while the
agitator continues to operate for the pre-set 'after-stirring' time.
During non-cooling periods the agitator switches on at pre-set intervals in order to
ensure an even temperature throughout the milk.
Independently of this a short or long 'intermediate stirring' period can be selected
during cooling by pressing a button.
Operate by pressing button on foil keyboard:
If the delayed start is activated (parameter c80), cooling starts for the first milking after
a delay. If the cooling button is pressed twice, cooling starts immediately.
Operation via digital input:
The cooling starts immediately - depending on the setting - or with a delayed start
cooling.
!Continuous stirring mode
The agitator can be switched on from the OFF-mode by pressing a button and press
OFF-button to switch off. After which time the stirrer shuts off again is adjustable. This
action can be discontinued at any time with the OFF-button.
If parameterized the agitator is running indefinitely, but can be switched off with the
OFF-button at any time.
!Washing mode
The washing timer controls water intake as either by time or level, selected. All running
times (heater, pump, detergent injection) can be set separately. Detergent switchover
from acidic to alkaline can also be set.
The WTS-100-2 controls the various processes and times needed for a thorough wash
fully automatically.
Following a power failure the control unit restarts in the mode in which it was
operating before the outage.
Milk cooling functions
EXCERPT
Funcitonal description COOLING
0. no cooling start delay
Cooling starts immediately
1. simply no cooling start delay
Cooling starts after a set time.
Cooling immediately temperature-regulated
definied time temperature-regulated

- Page 8 - - Page 9 -
!Two separate switching stages for con-
trolling agitator motor and compressor
!Complete milk cooling control with auto-
matic stirring
!Cooling start by robot possible
!Permanent stirring function
!Cooling start delay
!Cooling time monitoring
!Target temperature switchover
!Stand-by function
(agitator and compressor off)
The milk cooling function of the WTS-200 includes
all features that a modern cooling tank control
should offer.
The control can be used for all common tank
models.
It supports both, the devices with compressor
(direct-evaporator) and those with ice-water-
cooling.
The activation of the cooling process can be done
in different ways:
,manually via button „START COOLING“
, via digital input „Remote start cooling“ (from
the robot or external button)
The cooling starts now according to pre-set
starting modes:
!Direct or
!with cooling start delay,
The control can be parameterized so that after the
cooling mode is triggered, the start of the compres-
sor is delayed in order to prevent freezing of small
quantities of milk in the tank. This delay takes
place at the first milking only - after the cleaning.
Operation mode
Parameterization
The control unit has various operating modes:
!OFF mode (tank empty)
The control unit is on stand-by. The display shows 'OFF', the LEDs are out and all
output replays are deactivated..
The following operating modes can only be selected from the OFF mode. It is not
possible to switch directly from one of them to another.
!Cooling mode
The current milk temperature, as measured, is permanently displayed.
It is possible to switch between two freely adjustable target temperatures by pressing a
button. If the milk temperature exceeds the selected target temperature (T1 or T2) by
the hysteresis value, the compressor relay and agitator are automatically activated.
Once the target temperature is reached, the compressor switches off, while the
agitator continues to operate for the pre-set 'after-stirring' time.
During non-cooling periods the agitator switches on at pre-set intervals in order to
ensure an even temperature throughout the milk.
Independently of this a short or long 'intermediate stirring' period can be selected
during cooling by pressing a button.
Operate by pressing button on foil keyboard:
If the delayed start is activated (parameter c80), cooling starts for the first milking after
a delay. If the cooling button is pressed twice, cooling starts immediately.
Operation via digital input:
The cooling starts immediately - depending on the setting - or with a delayed start
cooling.
!Continuous stirring mode
The agitator can be switched on from the OFF-mode by pressing a button and press
OFF-button to switch off. After which time the stirrer shuts off again is adjustable. This
action can be discontinued at any time with the OFF-button.
If parameterized the agitator is running indefinitely, but can be switched off with the
OFF-button at any time.
!Washing mode
The washing timer controls water intake as either by time or level, selected. All running
times (heater, pump, detergent injection) can be set separately. Detergent switchover
from acidic to alkaline can also be set.
The WTS-100-2 controls the various processes and times needed for a thorough wash
fully automatically.
Following a power failure the control unit restarts in the mode in which it was
operating before the outage.
Milk cooling functions
EXCERPT
Funcitonal description COOLING
0. no cooling start delay
Cooling starts immediately
1. simply no cooling start delay
Cooling starts after a set time.
Cooling immediately temperature-regulated
definied time temperature-regulated

!Integrated washing timer
!Robot signal 'Cleaning active’
!Water measuring regulated by time or
level as desired
!Function rinsing out
!Different heating temperatures for main
rinse 1 and 2
!Different cleaning programmes
!All running times (heating, pump, deter-
gents) individually adjustable
!Heating temperature adjustable
!Detergent switchover 'acidic/ alkaline'
!Outlet valves programmable as “de-
energised open / closed”
- Page 10 - - Page 11 -
Cleaning cycle
A cleaning cycle consists of up to six different
cleaning stages. The frequency of each stage
during a cycle can be set by the user.
Cleaning stage
Each cleaning cycle consist of up to 6 programme
steps which are running subsequently.
Functional description CLEANINGFunctional description CLEANING
Examples of possible plant configurations
Circulation cleaning with two dosing pumps
Cleaning method for milk cooling tanks, where alkaline and acidic detergents are sup-
plied by separate dosing pumps.
Cleaning method for milk cooling tanks, where alkaline and acidic detergents are sup-
plied either by a drawer or a fixed beaker.
Circulation cleaning with a beaker
K9 K10
K6
Drain valve
K5
Pump
Heater
K4
Agitator
Metering pump
for alcaline
detergent
K8 K3
K12
K9 K3
Hot
water
K10
K6
Drain valve
K5
Pump
Heater
K4
Agitator
alcaline /
or acid
detergent
K12
Cold
water
Hot
water
Cold
water
Hot water
valve
Cold water
valve
Hot water
valve
Cold water
valve Metering pump
for acid
detergent
Cleaning functions
EXCERPT
Washing programme diagram (Excerpt from manual)
The cleaning of the milk cooling tank takes place
according to a pre-set process description that
can be adapted to the local conditions. This can
either be done with one or two main rinse cycles.
The detergent can be added via cups, Venturi-
valves or metering pumps.
Define how many alkaline or acid rinses should
be performed per cleaning cycle.
The parameterization is described in detail on
the basis of the documentation.
Cleaning activ
Agitator
Cold water
Hot water
Alk. detergent
Acid detergent
Drain
Pump
Heater
Pre rinse 1 Pre rinse 2 Main rinse 1 Intermed. rinse Main rinse 2 After rinse
Programme step
n11
n12 n13 n14 n15 n16 n21 n22 n23 n24 n25 n26 n31 n32 D1 n33 D2 H n34 n35 n36 n41 n42 n43 n44 n45 n46 n51 n52 D1 n53 D2 H n54 n55 n56 n61 n62 n63 n64 n65 n66
Cleaning stage 1 Cleaning stage 2 Cleaning stage 3 Cleaning stage 4 Cleaning stage 5 Cleaning stage 6
Cleaning cycle

!Integrated washing timer
!Robot signal 'Cleaning active’
!Water measuring regulated by time or
level as desired
!Function rinsing out
!Different heating temperatures for main
rinse 1 and 2
!Different cleaning programmes
!All running times (heating, pump, deter-
gents) individually adjustable
!Heating temperature adjustable
!Detergent switchover 'acidic/ alkaline'
!Outlet valves programmable as “de-
energised open / closed”
- Page 10 - - Page 11 -
Cleaning cycle
A cleaning cycle consists of up to six different
cleaning stages. The frequency of each stage
during a cycle can be set by the user.
Cleaning stage
Each cleaning cycle consist of up to 6 programme
steps which are running subsequently.
Functional description CLEANINGFunctional description CLEANING
Examples of possible plant configurations
Circulation cleaning with two dosing pumps
Cleaning method for milk cooling tanks, where alkaline and acidic detergents are sup-
plied by separate dosing pumps.
Cleaning method for milk cooling tanks, where alkaline and acidic detergents are sup-
plied either by a drawer or a fixed beaker.
Circulation cleaning with a beaker
K9 K10
K6
Drain valve
K5
Pump
Heater
K4
Agitator
Metering pump
for alcaline
detergent
K8 K3
K12
K9 K3
Hot
water
K10
K6
Drain valve
K5
Pump
Heater
K4
Agitator
alcaline /
or acid
detergent
K12
Cold
water
Hot
water
Cold
water
Hot water
valve
Cold water
valve
Hot water
valve
Cold water
valve Metering pump
for acid
detergent
Cleaning functions
EXCERPT
Washing programme diagram (Excerpt from manual)
The cleaning of the milk cooling tank takes place
according to a pre-set process description that
can be adapted to the local conditions. This can
either be done with one or two main rinse cycles.
The detergent can be added via cups, Venturi-
valves or metering pumps.
Define how many alkaline or acid rinses should
be performed per cleaning cycle.
The parameterization is described in detail on
the basis of the documentation.
Cleaning activ
Agitator
Cold water
Hot water
Alk. detergent
Acid detergent
Drain
Pump
Heater
Pre rinse 1 Pre rinse 2 Main rinse 1 Intermed. rinse Main rinse 2 After rinse
Programme step
n11
n12 n13 n14 n15 n16 n21 n22 n23 n24 n25 n26 n31 n32 D1 n33 D2 H n34 n35 n36 n41 n42 n43 n44 n45 n46 n51 n52 D1 n53 D2 H n54 n55 n56 n61 n62 n63 n64 n65 n66
Cleaning stage 1 Cleaning stage 2 Cleaning stage 3 Cleaning stage 4 Cleaning stage 5 Cleaning stage 6
Cleaning cycle

- Page 12 - - Page 13 -
166
175
95
106
T1 T2
°C
Mode
Technical data
Dimensions Connection diagram
The WTS-200 is universally usable for all types of
plants. Relays and digital inputs can be
parameterized for versatile functions.
The connection diagram below represents the
basic configuration of the inputs and outputs.
Technical data
Dimensions
230V AC
50/60Hz
K2 K3 K4 K5 K6 K7 K8 K9 K10
A1
A2
5 6 7 8 9 10 11 12 13 14
Safety switch
Temp. sensor
KTY81-210
RS-485 PC
max. switching current relay:
K1...K10 5A/230VAC1
Cleaning activ
K1
1 2 3
25 24 23 22 21 20 19 18 17 16
Remote start cooling
Fault warning input
Level input
Digital inputs
Agitator Compressor
Cold water valve Warm water valve
Detergent alkaline
Drain valve
Heater
Cleaning pump
Infeed actuators Detergent acid
Operating voltage 230V AC +/-10%, 50 Hz
Relay contacts 10 performance relays
max. switching current each 5A AC1 - 250V AC
max. switching voltage 250V AC - 50 Hz
Display 13 mm LED - Display, 3 digits
LED switching status displays 3 mm
Display range -99 .. 999
Number of Sensors 1
Sensor type KTY 81-210
Sensor cable lenght 2 metres (or as required)
Measurement range -5° .. +70°C
Temperature resolution 0,1°C
Control mode two-step-controller
Hysteresis* 0,1 K .. 10,0 K (standard adjusting 0,7 K)
Water detection via level monitor (optionally)
Target temperature T1* standard adjusting 4°C
Target temperature T2* standard adjusting 4°C
Digital inputs 3 (via optocoupler)
Connection Push-in connections
Housing FEG 106/175 M
- front dimension 106 x 175 mm
- front panel cut out 156 x 96 mm
- insertion depht 45 mm
Protection (housing front) IP 65
Environment specifications:
- Operation temperature 0° .. +50°C
- Storage temperature -20° .. +70°C
- max. humidity 75% (no dew)
Technical data subject to change

- Page 12 - - Page 13 -
166
175
95
106
T1 T2
°C
Mode
Technical data
Dimensions Connection diagram
The WTS-200 is universally usable for all types of
plants. Relays and digital inputs can be
parameterized for versatile functions.
The connection diagram below represents the
basic configuration of the inputs and outputs.
Technical data
Dimensions
230V AC
50/60Hz
K2 K3 K4 K5 K6 K7 K8 K9 K10
A1
A2
5 6 7 8 9 10 11 12 13 14
Safety switch
Temp. sensor
KTY81-210
RS-485 PC
max. switching current relay:
K1...K10 5A/230VAC1
Cleaning activ
K1
1 2 3
25 24 23 22 21 20 19 18 17 16
Remote start cooling
Fault warning input
Level input
Digital inputs
Agitator Compressor
Cold water valve Warm water valve
Detergent alkaline
Drain valve
Heater
Cleaning pump
Infeed actuators Detergent acid
Operating voltage 230V AC +/-10%, 50 Hz
Relay contacts 10 performance relays
max. switching current each 5A AC1 - 250V AC
max. switching voltage 250V AC - 50 Hz
Display 13 mm LED - Display, 3 digits
LED switching status displays 3 mm
Display range -99 .. 999
Number of Sensors 1
Sensor type KTY 81-210
Sensor cable lenght 2 metres (or as required)
Measurement range -5° .. +70°C
Temperature resolution 0,1°C
Control mode two-step-controller
Hysteresis* 0,1 K .. 10,0 K (standard adjusting 0,7 K)
Water detection via level monitor (optionally)
Target temperature T1* standard adjusting 4°C
Target temperature T2* standard adjusting 4°C
Digital inputs 3 (via optocoupler)
Connection Push-in connections
Housing FEG 106/175 M
- front dimension 106 x 175 mm
- front panel cut out 156 x 96 mm
- insertion depht 45 mm
Protection (housing front) IP 65
Environment specifications:
- Operation temperature 0° .. +50°C
- Storage temperature -20° .. +70°C
- max. humidity 75% (no dew)
Technical data subject to change

40 mm
6,0 mm
6,1 mm
- Page 15 -- Page 14 -
SensorsCustomized developments
A full service
In many cases we offer more than just develop-
ment work.
At Welba we also understand service to include
the development of concepts for the use of the
new product by your own customers, the design
and production of frontal foils or even housings,
or the provision of operating instructions with
your own corporate design.
Not always major developments...
For many of our clients we also develop and
manufacture simple electronic systems for
straightforward applications.
The development of solutions tailored to solve
our clients’ specific problems is one of Welba’s
major strengths. Here we can offer extensive
experience, as well as excellent references.
On the basis of many previous development
projects we are in a position to devise a solution
to meet your specific needs. Nor is our know-how
not restricted to temperature measurement
technology; we can also develop solutions in
completely different areas of measurement and
regulation technology. We can often achieve the
necessary simply by modifying our standard
products.
In any event, we will always recommend the best
solution for you.
Welba's standard temperature sensors are char-
acterized by high measuring accuracy and a long
service life.
The case material made of stainless steel
(1.4301) is food-safe and allows the use in many
aggressive media.
On request, we manufacture sensors in different
case shapes and cable materials.
The following figure gives an impression of the
possibilities.

40 mm
6,0 mm
6,1 mm
- Page 15 -- Page 14 -
SensorsCustomized developments
A full service
In many cases we offer more than just develop-
ment work.
At Welba we also understand service to include
the development of concepts for the use of the
new product by your own customers, the design
and production of frontal foils or even housings,
or the provision of operating instructions with
your own corporate design.
Not always major developments...
For many of our clients we also develop and
manufacture simple electronic systems for
straightforward applications.
The development of solutions tailored to solve
our clients’ specific problems is one of Welba’s
major strengths. Here we can offer extensive
experience, as well as excellent references.
On the basis of many previous development
projects we are in a position to devise a solution
to meet your specific needs. Nor is our know-how
not restricted to temperature measurement
technology; we can also develop solutions in
completely different areas of measurement and
regulation technology. We can often achieve the
necessary simply by modifying our standard
products.
In any event, we will always recommend the best
solution for you.
Welba's standard temperature sensors are char-
acterized by high measuring accuracy and a long
service life.
The case material made of stainless steel
(1.4301) is food-safe and allows the use in many
aggressive media.
On request, we manufacture sensors in different
case shapes and cable materials.
The following figure gives an impression of the
possibilities.

WELBA
w w w.welba.de
Gewerbepark Siebenmorgen 6
D-53547 Breitscheid
GmbH
Tel.:
Fax:
Email:
+49 (0)2638.93 20-0
+49 (0)2638.93 20-20
[e-mail]