GOK SmartBox 4 BASIC PRO User instructions

Translation of the original operating instructions / part no. 28 680 57 a Version 12.2019
Assembly and operating manual
SmartBox®4 BASIC PRO
Electronic remote level gauge for up to four tanks
CONTENTS
ABOUT THE MANUAL............................................................................................................................. 1
SAFETY ADVICE..................................................................................................................................... 2
PRODUCT-RELATED SAFETY ADVICE ................................................................................................. 2
GENERAL PRODUCT INFORMATION.................................................................................................... 3
INTENDED USE ...................................................................................................................................... 3
USER QUALIFICATION ........................................................................................................................... 4
ASSEMBLY.............................................................................................................................................. 4
ELECTRICAL INSTALLATION ................................................................................................................. 5
START-UP ............................................................................................................................................... 7
PROGRAMMING ..................................................................................................................................... 7
NOTES ON PROGRAMMING ................................................................................................................ 11
OPERATION.......................................................................................................................................... 13
TROUBLESHOOTING ........................................................................................................................... 13
FUNCTION CHECK ............................................................................................................................... 13
MAINTENANCE ..................................................................................................................................... 14
RESTORATION ..................................................................................................................................... 14
DISPOSAL ............................................................................................................................................. 15
TECHNICAL DATA ................................................................................................................................ 15
LIST OF ACCESSORIES ....................................................................................................................... 15
PROBES AND ACCESSORY PARTS .................................................................................................... 16
WARRANTY .......................................................................................................................................... 16
TECHNICAL CHANGES ........................................................................................................................ 16
SERVICE ............................................................................................................................................... 16
CERTIFICATE NO. ................................................................................................................................ 16
ABOUT THE MANUAL
•This manual is part of the product.
•This manual must be observed and handed over to the operator to ensure that
the component operates as intended and to comply with the warranty terms.
•Keep it in a safe place while you are using the product.
•In addition to this manual, please also observe national regulations, laws and
installation guidelines.

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SAFETY ADVICE
Your safety and the safety of others are very important to us. We have provided many
important safety messages in this assembly and operating manual.
Always read and obey all safety messages.
This is the safety alert symbol.
This symbol alerts you to potential hazards that can kill or hurt you and others.
All safety messages will follow the safety alert symbol and either the word
“DANGER”, “WARNING”, or “CAUTION”. These words mean:
describes a personal hazard with a high degree of risk.
May result in death or serious injury.
describes a personal hazard with a medium degree of risk.
May result in death or serious injury.
describes a personal hazard with a low degree of risk.
May result in minor or moderate injury.
describes material damage.
Has an effect on ongoing operation.
describes a piece of information describes a call to action
PRODUCT-RELATED SAFETY ADVICE
Escaping, liquid operating media:
•are hazardous to the aquatic environment
•are inflammable category 1, 2 or 3 liquids
•can ignite and cause burning
•can cause injury through people falling or slipping
Capture operating media during maintenance work.
May not be used in potentially explosive areas.
Can cause an explosion or serious injuries.
Must be installed by a specialised company in accordance with local industrial
health and safety regulations.
Installation outside the defined EX protection zone.
Do not use this device for safety applications or emergency stop
mechanisms or misuse it!
Injuries and damage to health and property through misuse.
You must observe the information contained in these instructions, especially
regarding installation, start-up and maintenance.
Damaged or destroyed insulation!
Can result in short circuit or electric shock.
Do not use the device if the insulation is damaged!
Have new insulation installed by a specialised company!
This assembly and operating manual is aimed at users and operators of this product.
These persons must have read and understood the assembly and operating manual.
The physical and psychical requirements for proper and safe handling of the product
must be ensured at all times!

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GENERAL PRODUCT INFORMATION
The electronic tank management system SmartBox®4 BASIC PRO can be used for remote
monitoring of the liquids contained in unpressurized liquids tanks.
In addition to the registration of tank content and remote data transfer, other functions can be
implemented by system enhancements, e. g. temperature measurement.
SmartBox®4 BASIC PRO allows the content of up to 4 tanks to be recorded and monitored
remotely. Because of its modular design, the system can be modified to suit many different
applications. The indicated measurements are not calibrated for invoicing.
SmartBox®4 BASIC PRO has a 2-line LCD display, four measuring inputs to connect
4 probes.
By default, the measuring probe can be installed with tank connecting threads G1, G1 1/2 or
G2.
INTENDED USE
Operating media with consideration of the otherwise suitable probe type and
accessories, see:
Please comply with the “Level gauge type FSA-W 4-20 mA for SmartBox®
1 – 4” assembly and operating manual!
Comply with the “Level probe” assembly and operating manual!
Installation location
•with protection type IP54, indoors and outdoors, if protected against the weather
Malfunctions caused by flooding!
The product is not designed for installation in areas prone to flooding or risk
areas.
Following flooding, the product must be replaced!
INAPPROPRIATE USE
All uses exceeding the concept of intended use:
Indicator:
•outdoor use without protection type IP54
•changes to the product or parts of the product
•installation in a potentially explosive area
Probe:
•e.g. operation with different operating media
•operation with inflammable operating media of categories 1, 2 or 3 with a flash point
<55°C1)
1) It is also necessary to comply with the divergent provisions/regulations of the EU
member states concerning areas at risk of explosion and the flash point of the operating
medium!
•installation in pressurised tanks and containers
You will find a list of operating media with descriptions, the relevant
standards and the country in which they are used in the Internet at
www.gok.de/liste-der-betriebsmedien.

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USER QUALIFICATION
This product may be installed only by qualified experts. These are personnel who are familiar
with setting up, installing, starting up, operating and maintaining this product.
"Equipment and systems requiring supervision may be operated only by persons aged at
least 18, who are physically capable and who have the necessary specialist knowledge or
who have been instructed by a competent person. Instruction at regular intervals, but at least
once per year, is recommended."
ASSEMBLY
Before assembly, check that the product is complete and has not suffered any damage during
transport.
ASSEMBLY must be carried out by a specialised company.
The specialised company and the operator must observe, comply with and understand all of
the following instructions in this assembly and operating manual. For the system to function
as intended, it must be installed professionally in compliance with the technical rules
applicable to the planning, construction and operation of the entire system.
These regulations also include the accident prevention regulations of the employers’ liability
insurance associations, the VDE regulations, and the installation and operating instructions.
Installing the level probe
See assembly and operating instruction “Level probe“.
Installing the probe
See assembly and operating instruction
„FSA-W 4-20 mA level gauge for SmartBox®1 – 4“.
ELECTRICAL INSTALLATION see corresponding instruction
„FSA-W 4-20 mA level gauge for SmartBox®1 – 4“.
The housing of the display unit is suitable for wall mounting and is connected to
the 230 V mains supply. Under normal circumstances, the display unit must be operated with
the housing cover closed.
It is installed and started up by a qualified technician while the unit is open.
Activity Qualification
storing, transporting, unpacking, OPERATION trained personnel
ASSEMBLY, MAINTENANCE
START-UP, SHUT-DOWN , REPLACEMENT,
RESTART, RESTORATION, DISPOSAL,
qualified personnel, customer service
ELECTRICAL INSTALLATION qualified electrician

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Installation of the display unit
Mount the display unit to the wall in a suitable position.
1. Open the display unit by removing the bottom cover.
2. After loosening the 2 screws, open the display unit by removing the cover.
3. Mount the display unit to a smooth vertical wall by means of dowels. Mount the housing
of the display unit by the four fixing holes with the enclosed screws and anchors.
Take care not to damage the housing.
4. After connecting the terminals and setting the unit up, replace the covers.
ELECTRICAL INSTALLATION
Connection of supply voltage:
Voltage: 230 V AC 50 Hz
Connection: Terminals N+ Lto the
display unit (cable not
included in the delivery)
Safety precautions for electrical components
The functions and operating safety of the device are guaranteed only under the climatic
conditions that are specified in TECHNICAL DATA. If the device is transported from a cold to
a warm environment, condensation may cause the device to malfunction or may even destroy
the device. Because of this, you must ensure that the device has acclimatised to the ambient
temperature before using it.
If you have any doubts that the device can be operated safely, do not operate it. Your safety
may be adversely affected by the device, if for example:
•it is obviously damaged
•it no longer works as specified
•it has been stored in unsuitable conditions for some time,
if in doubt, send the device to the manufacturer for repair or maintenance
1.
2.

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Observe the safety precautions and the assembly and operating instructions of
connected devices.
Connection line between indicator and probe unit
Voltage
Probe supply 20 V DC
Connection
Probe connection cable
+
–
SmartBox 4
BASIC PRO
Probe 1 - terminals
3
4
Tank 1
Probe 2 - terminals
5
6
Tank 2
Probe 3 - terminals
7
8
Tank 3
Probe 4 - terminals
9
10
Tank 4
Excess voltage!
Damage to components and device defect.
No 230 V AC connections may be made to terminals 3+ 4, 5+ 6, 7 + 9und 9+ 10 or
probe input terminals 1+ 2!
Switching voltage max. 250 V AC
Switching current max. 3,5 A
SmartBox®4 BASIC PRO
Fuel oil tank - wiring example SmartBox®4 BASIC PRO
Oil tank
Level
probe

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START-UP
Operation elements and display
The device is adjusted once when it is put into operation. After start-up the device operates in
display mode with the top closed.
The display is a two-line LCD display with 2 x 16 characters.
The display has blue background lighting for best readability in all lighting conditions.
SmartBox®4 BASIC PRO has the following display:
The device is adjusted via the three small
blue buttons:
These are located on the
motherboard between the
terminals.
Choosing the language (German, English
French or Spanish) inStep “18.Language
+Names”.
Activating power supply:
Keep away from the area of the 230 V terminal!
Programming the level gauge
Before programming, you need to ascertain the tank data and enter the values into the right
column (Input value) of the following table. Then, enter the values for the individual entry
steps.
Setting a
parameter:
Press [ENTER] to open setup mode.
Select the desired setting parameter via [PLUS].
Press [ENTER] to call up the value selection for the parameter.
Set the value with [MINUS]/[PLUS], press [ENTER] to save.
Quitting the
setup mode:
You can quit the setup mode at any time.
Select “Exit“ and press [ENTER]
to go back to the standard display mode.
PROGRAMMING
Overfilling of the tank due to incorrect entry values.
Operating media may leak. These:
•are hazardous to water,
•are category 1,2 and 3 inflammable liquids,
•can ignite and cause burning,
•may cause falling injuries due to slipping.
Enter these values with care!
The entry values are also retained in the event of the failure of the supply voltage.
Tank 1 Heat oil 37.400L
-10.100L 75%

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Menu
Input function
Input value
Tank: 1
Select the tank (tank: 1 to tank: 4) to enter the
corresponding values. (This step is not displayed if
only one probe is connected to SmartBox®4 BASIC
PRO.)
Tank:________
Tank:________
Tank:________
Tank:________
0.Exit
Press [ENTER] to return to display mode
1.Probe
Select probe measuring range see type label of the
probe - default setting 250 mbar
________mbar
Standard probe
max. tank height for
fuel oil
water
100mbar
1.20 m
1.00 m
150mbar
1.80 m
1.50 m
160mbar
1.90 m
1.60 m
200mbar
2.40 m
2.00 m
250mbar
2.90 m
2.50 m
400mbar
4.70 m
4.00 m
500mbar
6.00 m
5.00 m
1.000mbar
12.00 m
10.00 m
2.000mbar
24.00 m
20.00 m
3.000mbar
36.00 m
30.00 m
5.000mbar
60.00 m
50.00 m
Set mbar
2.Liquid
Select the medium
_______kg/m³
Medium
Density value kg/m³ (15 °C)
Fuel oil
845 kg/m³ - default setting
Water
999 kg/m³
Diesel
830 kg/m³
Biodiesel
880 kg/m³
RME, FAME
880 kg/m³
Rape oil
915 kg/m³
Palm oil
910 kg/m³
Motor oil
865 kg/m³
AdBlue
1090 kg/m³
Regular
gasoline
743 kg/m³
Premium
gasoline
750 kg/m³
Density value
Enter a special density value
with different measuring range
If the density of the stored medium is unknown, the reference height can be entered in menu
item “10.Trim height”

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Menu
Input function
Input value
3.Tank shape
Select Tank shape with [Enter]
Linear
Default setting
linear tank, rectangular tanks, vertical cylinders,
basement-welded steel tanks.
Cylindric
horiz.
Ball-shaped
spherical tank; buried tanks with spherical
basic shape; frequently plastic buried tank (GRP).
Oval
oval basement tanks; typical shape of GRP
tanks and single-walled sheet metal tanks
Convex
Plastic battery tanks, convex,
slightly convex shape, alternative to linear
Concave
Plastic battery tanks, concave,
slightly concave shape, alternative to linear
plastic
Plastic tank with recess
Plastic tank with a large recess (hollow) in the center
(without tape bindings)
Metal oil
tanks
Plate tank or plate tank battery
linear side walls, with semicircular arc top and bottom.
Bearing
chart
Enter a special tank shape from existing bearing chart.
For this purpose, up to 16 value pairs (height in cm +
volume in L) can be entered.
Before the value pairs are entered, the values for the
tank volumes must be entered in in steps "4.Tank
volume" and "5. Internal tank height".
Index: 0

0 cm

0 L

Index: 1 xxx.x cm xxxx L
Index: 2 . cm L
Index: 3 . cm L
max. 
Index:16max. cm max. L
Specified value pair (do not have to be entered).
first value pair entered
max. inside height of tank 
the max. tank volume menu
step “5.Internal tank height” is allocated automatically
and does not have to be entered.
Not all 15 intermediate value pairs (Index: 1 - 15) have to be entered.
A linear interpolation is made between 2 interpolation values. For a linear range of the tank
geometry it is sufficient to enter a lower and an upper value pair.
cylindrical tank with arched ends
horizontal tanks, tubular tanks
typical shape for steel outdoor or buried tanks.
Holed
Lying cylindrical tank with flat ends,
tube segment with straight end plates.
Typical tank shape for smaller diesel tanks.
Tube w.
flat ends

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Menu
Input function
Input value
4.Tank
volume
Adjust the tank volume with [+] / [-] (100%). The default
setting is 0 L. The value must be set.
___________L
Please see a volume table for the highest value,
if available. For a 100 m³ cyl. buried tank, this
may for example be the value 100600 litres.
5.Tank
height
Enter inner tank height in millimetres: e. g.: 249 cm
(max. value = 999,9 cm) (height without dome)
_________mm
Please see a volume table for the highest value,
if available. For a 100 m³ cyl. buried tank, this
may for example be the value 288 cm.
5b.Filling
limit
Set the filling limit of the tank with [+]/ [-]:
With fuel oil tanks, that is the shut-off point of the limit
indicator. The default setting is 95%.
e.g. 95%=237cm. For tanks which can be filled to the
very top (e.g. water tanks), it is necessary to set the
highest value of 99%.
__________%
6.View
Tank
In the 1st line of the display, the tank name/medium and
contents are displayed (e.g. in litres).
The display in the 2nd line can be selected:
____________
View details
e.g.
Single/detailed
Fillspace+Percent
a)
Fillspace+Level
b)
Percent+Level
c)
For fuel oil tanks in Germany, a free capacity display is
required according to TRwS 791-2. This is possible with
selection a) and b).
Single/Detailed
The tanks are displayed
cyclically one after the other, with L, % and, if
applicable, temperature. With display change.
Collective
The (eg. L) values of tanks 1 to 4 are displayed
(depending on the number of connected probes)
Without display change.
Percent
Yes
No
Select Yes

display change
values (eg. in L) Tank 1 – 4 
total capacity display + percent values
7.+8.Exit
Press Enter to return to display mode
After performing entry steps 1 - 7, the programming process is completed.
After confirmation of step “8.Exit“, the device automatically returns to default display mode;
the current tank content is shown in the display.
Special functions are available under entry steps 9 to 24 (see page 13).
After the end of setup, do not forget to replace the housing cover!
After completing the ASSEMBLY and PROGRAMMING, carrying out a function check is
recommended (FUNCTION CHECK section).

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EXAMPLE FOR PROGRAMMING
Example: 4 Basement tanks for 15.000 litres fuel oil, litre display, linear steel tank
Inner height 220 cm, (fill level tank 1 = 125 cm)
SmartBox®4 BASIC PRO with 4 standard probes 0 - 250 mbar
Menü-Schritt
Eingaben / Auswahl
Tank number:
1 (2,3,4)
1.Measure probe
250mbar
2.Liquid
Heat.oil
3.Tank shape
Linear
4.Tank volume
15.000L (set with [+] / [-] keys)
5.Tank height
220.0cm (set with [+] / [-] keys)
5b.Filling limit
95%=209cm (set with [+] / [-] keys)
6.View tanks Single/detailed
Collective Percents: Yes
(L

Σ

% are displayed alternately)
7.Exit
press [Enter] to see the indication 8.500L 8.520L Σ34.120
8.540L 8.560L 57% 57% 57% 57%
For Tank 2-4 repeat the entry with the correct value in the same way as with tank1
Tanks with inner shell
For tanks with an inner shell (e.g. cylindrical horizontal or tanks welded together in the
basement) the data in steps "4.Tank volume" and "5.Internal tank height" must be corrected.
Examples:
Wall thickness of inner casing 0.5cm reduce value for inner height by approx. 1cm,
reduce volume for 10m³ by 1.3%, for 20m³ by 1 %, for 50m³ by 0.8% and for 100m³
by 0.7 %.
Wall thickness of inner casing 2cm reduce value for inner height by approx. 4cm,
reduce volume for 10m³ by 5%, for 20m³ by 4%, for 50m³ by 3% and for 100m³ by 2.5%.
NOTES ON PROGRAMMING
Menu
Setting
Description
9.Offset
probe
Adjusting:
Probe zero point, electric
Position / Distance from base
Unusable capacity that is not to be displayed
ESC
Exit the menu
Offset calibr.
New measurement of probe zero point (electric)
Lift level probe out of the liquid beforehand.
Probe bottom
gap
Distance: x cm;
normal reference is x = 0 cm, max = 99 cm
Bottom
deadstock
Suction position: y cm
Normal reference is 0 cm = complete capacity.
y > 0 cm means corresponding unusable capacity.
Default values
Complete reset of all parameters of menu step 9 to
the original delivery status.

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Menu
Setting
Description
10.Trim
height
xxx.x cm
Entry option for the reference height for the 2-point
measurement, for other probe measurement range
or for an unknown density. Subtract 1.0 cm from
the actual measured level and enter this value.
Calibrate:No
Calibrate:Yes
If activated (Yes), the display in menu steps 1+2 is
then "by comparison".
If this is entered with an almost empty
tank, it is recommended that you make a correction
the next time it is filled.
11.Exit
Press [Enter] to return to display mode
12.Unit
L default setting
m³
%
m
kg
IG
UG
t
mbar
kPa
liter:
cubic meters:
percent:
meter:
kilogram:
imperial Gallon:
US liquid gallon:
ton:
millibar:
kilopascals:
999900L
2.50m³
99.50%
2.50m
999900kg
219750IG
263900UG
2.50t
500mbar
50kPa
13.Rounding
Automatically
Without
rounding
20L
50L
100L
200L
500L
1.000L
Default settings
minimal increments
Rounding increments in relation to the set volume
set with [+]/ [-] keys
14.Exit
Press [Enter] to return to display mode
15.Exit
Press [Enter] to return to display mode
16.Delete
tank
ESC
Exit the menu
Delete Tank n
Settings for tank n are deleted and reset to default
settings (tanks 2, 3, 4)
17.Input/
Output
Alarm-In

Sets the function of the alarm contact input
Closing
Closer alarm. Input closed Alarm
Opening
Opener alarm. Input contact opens Alarm
Deactiv
Sets the alarm input functionless
Data-Out

Defines the data output on the output adapter slot
Tank: 1
1-4
For data output a selection can be made between
•Output single tank 1, 2, 3 or 4 for analogue
adapter
•Output “1-4” all tanks are output sequentially 
via digital slot-in adapter – e.g. for PC set LAN

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Menu
Setting
Description
18.Language Language: German,English,French,Spain [+] / [-] / [Enter]
Names: ESC [+] / [-] / [Enter]
Name Tank 1: Suggested name
Letters can be changed with [+] / [-] / [Enter]
19.Exit [Enter] back to display mode
20.LCD
display
Contrast: 90 Set the contrast of the LCD display
21.Device
info
Displays information about:
Software-version: V6.00 (z. B.)
Serial-number: Tank 1: SN=1234 (z. B.)
Offset+Gain: X0=4.05mA B=1268 (for Tank 1)
22.Test
current
Test function for the current mA value of the probe:
ADC: 7400=11.40 mA
If level probe is not submerged, the value should
be close to 4 mA. Tolerance range is 3.7 ... 4.3 mA.
For larger deviations, see menu item 9.
23.Exit [Enter] back to display mode
24.Reset
ESC
Reset the device software:
Exit this function without executing it.
Restart Initialisation. The device software restarts and
keeps all device settings.
Factory
settings
Complete reset of all parameters to the original
delivery status.
26.Exit Back to display mode
OPERATION
The product requires no operation while it is running.
FUNCTION CHECK
We recommend that you check the displayed litre values once per year to make sure that
they are correct. For a simple check, pull the level probe up by its cable so that ithangs
above the liquid. In this status the display device should show 0 litres (+tolerance).
The probe signal can be checked with menu step "22. Test Current"
At 0 cmfill level approx. 3.7 – 4.3 mA.
In the event ofa considerable deviation, we recommend a replacement.New probe.
New probe/ replacement of the operating medium
If the installation of a new probe is required and/or a change in the operating medium takes
place, then firstly, all of the “standard values” under menu step “9th zero point probe“ must be
reset to the factory setting!
It is also necessary to check, and if required, correct all further set values.
17b.
H protocol
Data output:
Deactiv
Data: Litres
Data: Level
Data output to H Box (only with DTM-2):
•Deactivated
•Output in litres
•Output in level

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TROUBLESHOOTING
Error code
Significance
Error E1
The set value is invalid
Error E2
Measured value too small (I < 3.7 mA probe defective)
Error E3
Measured value too great for zero point calibration (level probe must not be
immersed)
Error E4
Measured value not plausible. Check menu item “9.Offset probe”
Error E5
Set height is more than the height of the tank. (incorrect entry menu step 10)
Error E6
The current measured value is too low as a reference point. The level probe
must be submerged. The set height (menu step 10) is too high (the
measured value is too low) Check menu item "9. Offset probe". Otherwise,
probe fault.
Error E7
The current measured value is too low in relation to the set tank height or to
the tank volume. The level probe must be submerged.
Error E8
Measured value (probe current) is too high - check electrical connection and
measuring range of the probe, switch power supply off and on again. Check
menu settings steps 1 to 5. If necessary, Check menu step "9.Offset probe".
Otherwise, probe fault.
Error E9
Probe current = 0 mA - no signal current. The probe cable is poled wrongly
or interrupted; check cable extension, reconnect if necessary.
Error E10
Calibration error. Disconnect the display device from the power supply, wait
5 s and then reconnect. Otherwise, probe fault.
Error E11
The liquid level in the tank is actually too low for an exact
measurement. You can still press [Enter] to confirm and continue.
Checking the probe signal:
Can be checked through menu item “22.Test current”:
At 0 cm fill level approx. 3.7 - 4.3 mA
For 1 m water column approx. 9 - 11 mA (standard probe with measuring range 250 mbar)
MAINTENANCE
See FUNCTION CHECK.
RESTORATION
If the actions described in TROUBLESHOOTING do not lead to a proper restart and if there is
no dimensioning problem, the product must be sent to the manufacturer to be checked. Our
warranty does not apply in cases of unauthorised interference.
In case of repeated errors or alarm messages (relay output) while the tank content does not
reach / remains below the set fill level alarm threshold at the probe element, check the
connection line of the signal and probe element for breakage or short-circuit, re-install if
necessary.

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TECHNICAL DATA
Indicator
Action Typ 1.B (according to EN 60730-1)
contamination degree 2 (according to EN 60730-1)
Rated impulse voltage 4000V
Supply voltage 230 V AC 50 Hz
Power input max. 2 VA
Measuring input 4 to 20 mA; Uo = 20 V
Switching voltage max. 250 V AC
Switching current max. 3,5 A
Dimensions W/H/D in mm 194 x 130 x 65 mm
Ambient temperature -10 °C to +50 °C
Housing Polycarbonat (PC)
Analog output 0 to 5 V DC; 4 to 20 mA
Resolution 12Bit
Degree of protection IP54 acc. to EN 60529
Level probe / Standard probe
Operating voltage 20 V DC
Material V4A; POM; FPM; PUR
Accuracy ± 1 %
Standard version 250 mbar
Installation position vertically suspended, or horizontally supine
Ambiente temperature
operating media -10 °C to +50 °C
connection cable 6 m
Length of standard probe without cable: 97 mm
Diameter of probe: 22 mm
Degree of protection IP68 acc. to EN 60529
LIST OF ACCESSORIES
Product description Information on application Order no.
Cable junction box IP66,
with pressure equalization
To extend the probe cable - e. g. in the dome 28 857 00
CERTIFICATE
Our management system is certified according to ISO 9001, ISO 14001 and
ISO 50001, see:
www.gok.de/qualitaets-umwelt-und-energiemanagementsystem.

SmartBox®4 BASIC PRO
Regler- und Armaturen-Gesellschaft mbH & Co. KG
Obernbreiter Straße 2-18 • 97340 Marktbreit / Germany
Tel.: [phone] • Fax: [phone]
E-Mail: [e-mail] • www.gok-online.de • www.gok-blog.de
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part no. 28 680 57 a
PROBES AND ACCESSORY PARTS
Product name
Usage information
Order no.
May not be used in potentially explosive areas.
Can cause an explosion or serious injuries.
Must be installed by a specialised company in accordance with local industrial
health and safety regulations.
Installation outside the defined EX protection zone.
Level probe
0 up to 250 mbar
Accuracy class 1%
for non-pressurized tanks with liquid
operating medium
28 801 00
Level probe
0 up to 250 mbar
Accuracy class 0.5%
for non-pressurized storage tanks with liquid
operating medium
28 891 00
Mechanical level gauge type
FSA-W 4-20 mA
Measuring accuracy:± 3%
for non-pressurized tanks with liquid
operating medium, measurement range: 0 to
2.40 m tank height
28 903 00
WARRANTY
We guarantee that the product will function as intended and will not leak during
the legally specified period. The scope of our warranty is based on Section 8 of
our terms and conditions of delivery and payment.
TECHNICAL CHANGES
All the information contained in this assembly and operating manual is the result of product
testing and corresponds to the level of knowledge at the time of testing and the relevant
legislation and standards at the time of issue. We reserve the right to make technical changes
without prior notice. Errors and omissions excepted. All figures are for illustration purposes
only and may differ from actual designs.
DISPOSAL
To protect the environment, our electrical and electronic appliances may not be
disposed of along with household waste.
At the end of its lifespan, each end user is obligated to pass old appliances to a district
or area collection point, separate from household waste. This ensures that old
appliances are disposed of properly and negative effects on the environment are
avoided. Our registration number for the electrical old appliances register (EAR) is:
WEEE-Reg.-No. DE 78472800.