fafnir VISY-X Guide

Technical Documentation
FAFNIR GmbH • Schnackenburgallee 149 c • 22525 Hamburg, Germany • T.: +49 / 40 / 39 82 07-0 • F.: +49 / 40 / 390 63 39
VISY-X
VISY Probes
Version: 13
Edition:
2019-02
Art. no.: 207194

I Table of Contents
Table of contents
1Introduction............................................................................................... 1
1.1 Related documentation............................................................................................................................2
1.2 Requirements for service engineers ....................................................................................................3
1.3 Safety instructions......................................................................................................................................3
2Versions of the VISY-X system ................................................................ 4
2.1 Wired version ...............................................................................................................................................4
2.2 Wireless version / radio system.............................................................................................................4
3Level Sensors ............................................................................................. 5
3.1 Design and function ..................................................................................................................................5
3.2 Installation Method....................................................................................................................................6
3.3 Types................................................................................................................................................................6
3.3.1 VISY-Stick / Biodiesel / E15.....................................................................................................................7
3.3.2 VISY-Stick Advanced / Advanced Biodiesel / Advanced E15.....................................................8
3.3.3 VISY-Stick Ethanol ......................................................................................................................................9
3.3.4 VISY-Stick Advanced Ethanol..............................................................................................................10
3.3.5 VISY-Stick N for AdBlue® urea solution......................................................................................... 11
3.3.6 VISY-Stick Flex / Flex Biodiesel / Flex E15.......................................................................................12
3.3.7 VISY-Stick LPG........................................................................................................................................... 13
3.3.8 VISY-Density (LPG) module.................................................................................................................. 13
4Environmental sensors ...........................................................................14
4.1 Types.............................................................................................................................................................14
4.1.1 VISY-Stick Interstitial ..............................................................................................................................15
4.1.2 VISY-Reed Interstitial Dry .....................................................................................................................16
4.1.3 VISY-Stick Sump Manhole / Dispenser............................................................................................17
4.1.4 VISY-Reed Sump Manhole / Dispenser...........................................................................................18
4.1.5 VISY-Stick Oil Separator........................................................................................................................19
5Installation ...............................................................................................20
5.1 Installation and safety instructions ...................................................................................................20
5.2 Variants........................................................................................................................................................21
5.2.1 Installation with screw-in unit.............................................................................................................22
5.2.2 Riser installation....................................................................................................................................... 23
5.2.3 Installing VISY-Stick N and VISY-Stick LPG without installation kit......................................24
5.2.4 Installation of VISY-Stick Flex.............................................................................................................. 25

Table of contents II
5.2.5 Sensor replacement instructions........................................................................................................26
5.2.6 Installation kit for VISY-Stick Sump ..................................................................................................26
5.2.7 Variable LPG installation kit for liquid gas containers ...............................................................27
5.2.8 1" installation kit ...................................................................................................................................... 28
5.3 Electrical connection...............................................................................................................................29
5.3.1 Voltage surge protection...................................................................................................................... 30
5.4 Installation offset .....................................................................................................................................31
6Maintenance ............................................................................................32
6.1 Servicing......................................................................................................................................................32
6.2 Return shipment.......................................................................................................................................32
7List of figures...........................................................................................32
8List of tables.............................................................................................32
9Annex........................................................................................................33
9.1 VISY-Stick....................................................................................................................................................33
9.1.1 EC Declaration of Conformity .............................................................................................................33
9.1.2 EU-Type Examination Certificate........................................................................................................34
9.1.3 Instructions................................................................................................................................................. 40
9.2 VISY-Reed...................................................................................................................................................47
9.2.1 EC Declaration of Conformity .............................................................................................................47
9.2.2 EU-Type Examination Certificate........................................................................................................48
1. Supplement........................................................................................................................................... 50
9.2.3 Instructions................................................................................................................................................. 52
9.3 Technical Data...........................................................................................................................................55
© Copyright:
Reproduction and translation are permitted only with the written consent of the FAFNIR GmbH. The FAFNIR GmbH
reserves the right to make product alterations without prior notice.

Page 1/55 Introduction
1Introduction
The VISY-X system (Volume Information SYstem) provides highly precise and continuous level
measurements for all commercially available fuels in up to 16 tanks. Simultaneously the product
temperature and the water level at the bottom of the tank are measured.
The system includes:
•VISY-Command (central unit)
•VISY-Setup (software application) for configuring the VISY-Command
•VISY-Stick (filling-level sensors) for tank gauging in the versions:
VISY-Stick, VISY-Stick Advanced, VISY-Stick Advanced with VISY-Density Module,
VISY-Stick Flex, VISY-Stick LPG (liquefied petroleum gas), …
In addition, following environmental sensors can also be operated with the VISY-X System:
−VISY-Stick Sump for monitoring the manhole or the dispenser sump with the distinc-
tion between product and water
−VISY-Reed Sump for monitoring the manhole or the dispenser sump without a dis-
tinction between liquids
−VISY-Stick Interstitial (with adjustable measuring range) for monitoring the interme-
diate chamber in double-walled tanks
−VISY-Reed Interstitial (with fixed measuring points) for monitoring the intermediate
chamber in double-walled tanks
−VIMS Sensors (VIMS-Tank, VIMS-Product Pipe, VIMS-Delivery Pipe) for monitoring
the intermediate chamber in double-walled tanks, filling lines and product lines from
our system partner SBG GmbH, see chapter 1.1
−COMS (Continuous Oil Separator Monitoring System) with VISY-Stick Oil Separa-
tor and VISY-Sludge probes for monitoring the oil and sludge layer in oil separators,
see chapter 1.1
−VPS for monitoring pressure, see chapter 1.1
The sensors can be installed easily both using the screw-in unit with external thread and through
a pipe installation (riser). The sensors may be operated in potentially explosive areas including
Zone 0.
In this manual, you are guided through installation and commissioning of the VISY-Stick and
VISY-Reed Sensors. This manual contains a description of all steps needed to perform the instal-
lation.

Introduction Page 2/55
1.1 Related documentation
The VISY probes have to be connected with the VISY-Command central unit which is mounted
inside the petrol station building. Before operating, the VISY-Command must be configured us-
ing a PC or notebook and the VISY-Setup software application. The VISY-Command collects data
from the sensors and transmits this to a higher-level system (e.g. POS) on request. Please follow
the instructions in the following technical documentation:
VISY-Command VI-4, art. no. 207184
VISY-Setup V4…, art. no. 207158
For the installation and commissioning of the VIMS sensors please contact:
SGB GmbH, Hofstraße 10, 57076 Siegen, Germany
T.: [phone], F.: [phone], E.: [email protected]
The VISY-SoftView software application is used for the display module in the VISY-Command
GUI and in the VISY-View Touch. VISY-SoftView provides the capability to view current tank data,
delivery data and the various alarms signalled by the VISY-Command central unit. For configu-
ration and operation of the display module with VISY-SoftView, see the following technical
documentation:
VISY-SoftView User Guide, art. no. 350026
VISY-SoftView Administrator, art. no. 350144
The probes VISY-Stick Oil Separator and VISY-Sludge are used for monitoring of oil separators
(COMS Continuous Oil Separator Monitoring). The sensor VISY-Stick Oil Separator continu-
ously monitors the height of the light-liquid layer, VISY-Sludge continuously monitors the height
of the sludge layer. For installation and operation see the following technical documentation:
COMS Technical data (multilingual), art. no. 350273
COMS Installation Quick Guide, art. no. 350240
COMS oil layer table, art. no. 350007
VISY-SoftView Oil separator, art. no. 350193
The VPS sensor is suitable for the monitoring of hydrostatic pressures. The sensor continuously
monitors the pressure of a liquid column. For installation and operation see the following tech-
nical documentation:
VPS pressure sensor, art. no. 350204

Page 3/55 Introduction
1.2 Requirements for service engineers
The complete VISY-X system should only be installed by trained service engineers.
1.3 Safety instructions
The VISY-X system is optimised for use in petrol stations and is compatible with all commercially
available fuels. It serves to measure and evaluate the filling levels in tanks. The system must be
used exclusively for this purpose. Observe and follow all product safety notes and operating
instructions. The manufacturer accepts no liability for any form of damage resulting from im-
proper use.
The level and environmental sensors have been developed, manufactured and tested in accord-
ance with the latest good engineering practices and generally accepted safety standards.
Nevertheless, hazards may arise from their use.
The following safety precautions must be observed in order to reduce the risk of injury, electric
shocks, fire or damage to the equipment:
•Do not change or modify the system or add any equipment without the prior consent
of the manufacturer.
•Only use original parts. These comply with the technical requirements specified by the
manufacturer.
•The installation, operation and servicing of the sensors and the VISY-Command must
solely be carried out by expert personnel.
•Operators, installers and service technicians must observe all applicable safety regula-
tions. This also applies to any local safety and accident prevention regulations which
are not stated in this manual.
•The product may be powered only via the permissible auxiliary power supply.
The safety instructions in this user guide are marked as follows:
If these safety instructions are not observed, it may result in the risk of accident or
damage to the VISY-X system.
Useful tips and information in this user guide you should observe, appear in italics
and are identified by this symbol.

Versions of the VISY-X system Page 4/55
2Versions of the VISY-X system
Two versions of the VISY-X system are available which differ in different data transmission tech-
nology:
(1) The wired version
(2) The wireless version / radio system
2.1 Wired version
In most cases, data is transferred between the sensors and the VISY-Command central unit via
cable. This cable is also in charge of the voltage supply of the sensors. The wired version of the
VISY-X system is the standard version.
2.2 Wireless version / radio system
If no free cable ducts are available at the petrol station, it is possible to instead opt for the
wireless tank gauging system. In this case, the benefit of installing the wireless system is that it
does not entail any excavation work.
In the wireless system, the sensors are connected to a transmitter and powered by a battery.
The radio version of the central unit is equipped with a receiving module.
The radio system consists of the additional components:
•VISY-RFR (radio frequency receiver, receiver installed in VISY-Command … RF)
•VISY-RFT (radio frequency transmitter, transmitter with battery)
The installation procedure for the wireless system is described in the following technical docu-
mentation:
VISY-RF III radio system, art. no. 350272

Page 5/55 Level Sensors
3Level Sensors
3.1 Design and function
The sensors consist of a probe head (1) and a probe tube (4) made of stainless steel. The probe
tube is fitted in the tank with a screw-in unit (3) for height adjustment. For riser installation, the
screw-in unit is not required. A float (5) for measuring the product filling level and an additional
float (6) for continuous water detection move on this probe tube. In the case of products having
a density greater than 0.9 kg/l, water detection cannot take place and the water float must be
removed.
Figure 1: Mode of operation of the magnetostrictive measuring principle
The sensor operates according to the magnetostrictive measuring principle. The probe tube
contains a wire (7) made of magnetostrictive material. The sensor electronics (2) transmits
pulses through the wire, which generate a circular magnetic field (8). Permanent magnets (9)
are used as filling level sensors which are installed in both the product float (5) and the water
float (6). The magnetic fields of the float magnets (9) axially magnetises the wire in this area.
Due to the overlapping of the two magnetic fields, a torsion pulse (10), which runs in both di-
rections through the wire from the float position, is created in the area of the float magnets.
One torsion pulse runs directly to the probe head and the other one is reflected at the bottom
end of the probe tube. The time between the current pulse being transmitted and the two tor-
sion pulses arriving at the probe head is measured and the float position calculated. The
position of the water float is calculated by measuring a second pulse.
1 – Probe head
2 – Sensor electronics
3 – Screw-in unit
4 – Probe tube
5 – Product float
6 – Water float
7 – Magnetostrictive wire
8 – Circular magnetic field
9 – Permanent magnet
10 – Torsion pulse
①
②
③
④
⑤
⑥
⑦
⑧
⑩
⑨
⑩

Level Sensors Page 6/55
3.2 Installation Method
Depending on the installation method, the sensors can be delivered in the following versions:
•for the Riser installation
•with screw-in unit for mounting on the tank lid
3.3 Types
The following level sensors then are described:
•VISY-Stick / Biodiesel / E15
•VISY-Stick Advanced / Advanced Biodiesel / Advanced E15
•VISY-Stick Ethanol
•VISY-Stick Advanced Ethanol
•VISY-Stick N for AdBlue®:
•VISY-Stick Flex / Flex Biodiesel / Flex E15
•VISY-Stick LPG
•VISY-Stick Advanced with VISY-Density Module

Page 7/55 Level Sensors
3.3.1 VISY-Stick / Biodiesel / E15
The VISY-Stick level sensor is designed for level measurement of petrol and diesel fuels. A special
version is available for biodiesel or E15 (petrol-ethanol mixture with 0 … 15 % Ethanol). The sen-
sor is available for riser installation and for installation with screw-in unit.
Figure 2: VISY-Stick / Biodiesel / E15
Riser installation
Installation with screw-in unit
M12 coupling
1 brown +
2 white A
3 blue –
4 black B
Equipotential bonding
connection
Probe head
Riser installation kit
(centring aid 3”/4”)
Screw-in unit R1½, AF
55, brass
Probe tube
∅12
Product float
∅43 x 43
Water float
∅43
Circlip
Dimensions in mm
Probe length
Probe length
Ø 47.2
appr. 123
Ø 47.2
appr. 123

Level Sensors Page 8/55
3.3.2 VISY-Stick Advanced / Advanced Biodiesel / Advanced E15
The sensor VISY-Stick Advanced is equipped with a higher measuring accuracy than VISY-Stick.
It is designed for the level measurement of petrol and diesel fuels. A special version is available
for biodiesel or E15 (petrol-ethanol mixture with 0 … 15 % Ethanol). The sensor is available for
riser installation and for installation with screw-in unit.
Figure 3: VISY-Stick Advanced
Installation with screw-in
unit and R2 reducer
Riser installation
M12 coupling
1 brown +
2 white A
3 blue –
4 black B
Equipotential bonding
connection
Probe head
Riser installation kit
(centring aid 3”/4”)
Screw-in unit R1½, AF 55,
brass
Reduction R2,
steel
Probe tube
∅12
Product float
∅54 x 31
Water float
∅43 x 62
Circlip
Dimensions in mm
Probe length
Probe length
Ø 47.2
appr. 123
Ø 47.2
appr. 123

Page 9/55 Level Sensors
3.3.3 VISY-Stick Ethanol
The sensor VISY-Stick Ethanol is designed for the level measurement of petrol-ethanol mixtures
having an ethanol-content of more than 15 %. The sensor is available for riser installation and
for installation with screw-in unit.
Figure 4: VISY-Stick Ethanol
Installation with screw-in unit
Riser installation
M12 coupling
1 brown +
2 white A
3 blue –
4 black B
Equipotential bonding
connection
Probe head
Riser installation kit
(centring aid 3”/4”)
Screw-in unit R1½, AF
55, brass
Probe tube
∅12
Product float
∅43 x 43
Circlip
Dimensions in mm
Probe length
Probe length
Ø 47.2
appr. 123
Ø 47.2
appr. 123

Level Sensors Page 10/55
3.3.4 VISY-Stick Advanced Ethanol
The sensor VISY-Stick Advanced Ethanol is equipped with a higher measuring accuracy than
VISY-Stick Ethanol. It is designed for the level measurement of petrol-ethanol mixtures having
an ethanol-content of more than 15 %. The sensor is available for riser installation and for in-
stallation with screw-in unit.
Figure 5: VISY-Stick Advanced Ethanol
Dimensions in mm
M12 coupling
1 brown +
2 white A
3 blue –
4 black B
Equipotential bonding
connection
Probe head
Riser installation kit
(centring aid 3”/4”)
Screw-in unit R1½, AF
55, brass
Reduction R2,
steel
Probe tube
∅12
Product float
∅54 x 31
Spacer
Circlip
Probe length
Probe length
Riser installation
appr.
∅
47.2
appr.
∅
47.2
Installation with screw-in
unit and R2 reducer

Page 11/55 Level Sensors
3.3.5 VISY-Stick N for AdBlue® urea solution
The sensor VISY-Stick N is designed for the level measurement of AdBlue®.
Figure 6: VISY-Stick N for AdBlue® urea solution
M12 coupling
1 brown +
2 white A
3 blue –
4 black B
Equipotential bonding connection
Probe head
Compression fitting / cutting ring fitting
G 3/8, stainless steel
Reducer R1½,
stainless steel
Probe tube
∅12
Product float, ∅43 x 43
Circlip
Dimensions in mm
Probe length
appr. 123
∅
47.2

Level Sensors Page 12/55
3.3.6 VISY-Stick Flex / Flex Biodiesel / Flex E15
The level sensor VISY-Stick Flex is a VISY-Stick with flexible probe tube. The magnetic base at
the lower end of the probe tube keeps the sensor attached to the tank bottom after installa-
tion. The sensor installation is possible only with screw-in unit.
Figure 7: VISY-Stick Flex
Probe length
appr. 123
∅
47.2
∅
43
120
Adjusting range
M12 coupling
1 brown +
2 white A
3 blue –
4 black B
Equipotential bonding connection
Probe head
Screw-in unit R1½, SW 55, stainless steel
Probe tube ∅12, stainless steel
(500 mm)
Corrugated hose ∅12, stainless steel
Probe tube ∅12, stainless steel
(500 mm)
Product float, ∅43 x 43
Water float, ∅43
Weight, stainless steel
Magnetic base
Dimensions in mm
∅
34

Page 13/55 Level Sensors
3.3.7 VISY-Stick LPG
The sensor VISY-Stick LPG is designed for the level measurement of liquefied petroleum gas
(LPG).
Figure 8: VISY-Stick LPG
3.3.8 VISY-Density (LPG) module
See Technical Documentation VISY-Density (LPG), Art. No. 350213
M12 coupling
1 brown +
2 white A
3 blue –
4 black B
Equipotential bonding connection
Probe head
Cutting ring fitting,
¾ "or ½" NPT, stainless steel
Option: Reducer, 1½" NPT
Probe tube, ∅12
Product float ∅40 x 120
or ∅30 x 45
Circlip
Dimensions in mm
Probe length
Ø 47.2
appr. 123

Environmental sensors Page 14/55
4Environmental sensors
The environmental sensors include the
•VISY-Stick Interstitial for the leakage detection of tanks
•VISY-Stick Sump for the detection of liquids in the manhole or in the dispenser sump
with freely selectable alarm threshold
•VISY-Reed for the detection of liquids in the manhole or in the dispenser sump with a
fixed alarm threshold
•VIMS sensors for leakage detection of tanks (VIMS tank),
leakage detection of product lines to the fuel dispensers (VIMS product pipe) or
leakage detection of filling lines to the tanks (VIMS delivery pipe)
The VISY-Stick sensors operate according to the magnetostrictive measurement principle (see
chapter 3.1), the VISY-Reed sensors have a reed contact with switching function.
For more information on the VIMS sensors, please contact our system partner: SGB GmbH,
Siegen, Germany, (see chapter 1.1).
4.1 Types
The following environmental sensors then are described:
•VISY-Stick Interstitial
•VISY-Reed Interstitial Dry
•VISY-Stick Sump Manhole / Sump Dispenser
•VISY-Reed Sump Manhole / Sump Dispenser
•VISY-Stick Oil Separator

Page 15/55 Environmental sensors
4.1.1 VISY-Stick Interstitial
The sensor VISY-Stick Interstitial is designed for monitoring the leak-detection fluid (salt brine,
glycol, etc.) in the intermediate chambers of double-walled tanks. It reports over- and under-
shooting of adjustable thresholds. VISY-Stick Interstitial can be used as a "dry sensor" which
detects the penetration of a liquid into the intermediate chambers of double-walled tanks. The
sensor is available for riser installation and for installation with screw-in unit.
Figure 9: VISY-Stick Interstitial
Dimensions in mm
Probe length
Probe length
M12 coupling
1 brown +
2 white A
3 blue –
4 black B
Equipotential bonding
connection
Probe head
Riser installation kit
(centring aid 3”/4”)
Screw-in unit R1½, AF
55, brass
Probe tube
∅12
Product float
∅43 x 43
Circlip
Riser installation
Installation with screw-in unit
Ø 47.2
appr. 123
Ø 47.2
appr. 123

Environmental sensors Page 16/55
4.1.2 VISY-Reed Interstitial Dry
The sensor VISY-Reed Interstitial Dry is designed for monitoring dry intermediate chambers of
double-walled tanks. The reed contact indicates the penetration of a liquid into the dry space.
Figure 10: VISY-Reed Interstitial Dry
Cable length 5000 mm
White marking
Four (4) wire cable
brown +
white A
blue –
black B
Cable gland,
brass nickel-plated
Housing,
brass nickel-plated
Probe tube,
stainless steel
Float, stainless steel
Dimensions in mm
appr. 48
125

Page 17/55 Environmental sensors
4.1.3 VISY-Stick Sump Manhole / Dispenser
The sensor VISY-Stick Sump is designed for monitoring the manhole (Manhole version) and the
sump underneath the dispenser (Dispenser version). The sensor detects fluids that could poten-
tially accumulate in the sump and is capable to distinguish between water and fuel. The sensor
is tamper-proofed. For the mounting an installation kit is available (art. no. 910036).
Figure 11: VISY-Stick Sump
M12 coupler
1 brown +
2 white A
3 blue –
4 black B
Equipotential bonding connection
Probe head & marking:
• blue for VISY-Stick Sump Manhole
• red for VISY-Stick Sump Dispenser
Tamper protection
Dimensions in mm
Ø 47.2
Ø 65
appr. 105
60
425