fafnir TORRIX XTS Series Guide

Technical Documentation
FAFNIR GmbH • Schnackenburgallee 149 c • 22525 Hamburg • Germany • T.: +49 /40 / 39 82 07-0 • Web: www.fafnir.com
TORRIX … XTS …
Magnetostrictive Level Sensor with Display
Edition: 2023-04
Version: 1
Art. no.: 350372

I Table of contents
Table of Contents
1Characteristics........................................................................................................ 1
1.1 TORRIX XTS Variants..........................................................................................................................2
2Safety Instructions ................................................................................................3
3Design and Function ............................................................................................4
3.1 TORRIX XTS with Screw Connection............................................................................................5
3.2 TORRIX XTS with Flange ..................................................................................................................6
3.3TORRIX XTS for Bypass.....................................................................................................................7
4Installation ..............................................................................................................8
4.1 Installation with screw-in unit .......................................................................................................9
4.2 Installation with flange...................................................................................................................10
5Electrical connection ...........................................................................................11
5.1 Connection Diagrams.....................................................................................................................11
5.1.1Wiring diagram TORRIX XTS ........................................................................................................11
5.1.2 Wiring diagram TORRIX Ex XTS...................................................................................................12
5.1.3 Wiring diagram TORRIX Exd XTS................................................................................................13
5.2 Maximum Length of the Connection Cable ...........................................................................14
5.3 Wiring ...................................................................................................................................................15
5.3.1 Wiring the TORRIX (Ex) XTS..........................................................................................................16
5.3.2 Wiring the TORRIX (Exd) XTS with Heater...............................................................................17
6Indication and adjustment module................................................................18
6.1 Rotation of the display and adjustment module..................................................................18
6.2 Operation ............................................................................................................................................18
6.2.1 Arrangement of the keys / magnet sensors...........................................................................19
6.2.2 Function of the keys / magnet sensors....................................................................................19
6.3 Measured value display .................................................................................................................20
6.4Simulation ...........................................................................................................................................21
6.5 Error display .......................................................................................................................................22
6.6 Icons......................................................................................................................................................22
7Adjustment .......................................................................................................... 23

Table of contents II
7.1 TORRIX XTS Configuration............................................................................................................23
7.2 Menu Structure .................................................................................................................................25
8Maintenance........................................................................................................28
8.1 Servicing ..............................................................................................................................................28
8.2 Return Shipment...............................................................................................................................28
9Technical Data .....................................................................................................29
9.1 Sensor...................................................................................................................................................29
9.2 Float ......................................................................................................................................................30
10 List of Figures .......................................................................................................31
11 Annex ....................................................................................................................32
11.1 EU Declaration of Conformity .....................................................................................................32
11.2 EU-Type Examination Certificate ................................................................................................33
11.3 Instructions.........................................................................................................................................41
© Copyright:
Reproduction and translation are permitted solely with the written consent of the FAFNIR GmbH. The FAFNIR GmbH
reserves the right to carry out product alterations without prior notice.

Page 1/47 Characteristics
1Characteristics
The TORRIX ... XTS ... is a high-precision level sensor from the TORRIX series with an addi-
tional display (XTS) for showing up to 3 different TORRIX measured values on the sensor
head.
The sensor has been developed for continuous level measurement of liquid media in con-
tainers. The measuring principle of the sensor uses the physical effect of the magneto-
striction and is largely unaffected by the temperature. This method is particularly ideal where
level measurements are required to be extremely accurate, such as in the chemical industry.
The TORRIX XTS is available with the following (optional) features:
•Media-contacting probe tube of stainless steel (standard), Hastelloy or titanium
•Straight probe tube with probe tube diameter 12 mm
•Probe lengths from 200 mm to 6 m, as Flex version up to 22 m
•Output signal 4-20 mA and RS-485 serial interface
•Communication via the HART® protocol
•With temperature measurement
•Use in potentially explosive areas with device protection levels Ga (Zone 0 only
with intrinsically safe version), Ga/Gb (Zone 0/1) or Gb (Zone 1)
•Process connection as screw-in unit, flange or bypass
The different TORRIX XTS variants are listed in the table on the next page.
For information about the installation of the TORRIX XTS Flex, see:
TORRIX Flex Installation Guide multilingual, art. no. 350118
For the TORRIX device types without a display, see the technical documentation:
TORRIX (with side cable connection), art. no. 350335
TORRIX M12 (with M12 connector), art. no. 350164

Characteristics Page 2/47
1.1 TORRIX XTS Variants
Type
Approval
Electrical
version
Design
Measuring
accuracy
Mechanical
design
Process temperature
HHT
Maximum temperature -40 °C … +450 °C
HT
High temperature -40 °C … +250 °C
LT
Low temperature -65 °C … +125 °C
NT
Normal temperature -40 °C …(+85) +125 °C
Rigid sensor tube with 12 mm diameter
B
Sensor tube not centered on the sensor head (Bypass)
Flex ...
Flexible sensor tube (... rigid parts: F = 200/ 300 mm; T = 500 mm)
HY
Construction for use in the hygiene area
PL
Plastic coating against very aggressive media
Standard
-5T
With five temperature sensors
-A5T
Increased measurement accuracy and five temperature sensors
-A
Increased measurement accuracy (Advanced)
Standard construction
VT
Internal structure vibration resistant for portable tanks
XTS
RS-485 and 4 … 20 mA interface with HART protocol and setting button and digital display
XTSH
RS-485 and 4 … 20 mA interface with HART protocol, setting button, digital display and heating
(only Exd and without Ex)
Without Ex approval
Ex
With Ex approval intrinsic safety "ia"
Exd
With Ex approval flameproof enclosure "d" or protection by housing "t" and intrinsic safety "ia" for "... XT..."
TORRIX magnetostrictive level sensor with connection terminals or plugs
Example:
TORRIX Ex XTS B is a TORRIX XTS with Bypass assembly for use in hazardous areas.

Page 3/47 Safety Instructions
2Safety Instructions
The TORRIX XTS level sensor has been developed for level measurement of liquids in con-
tainers. The level sensor must be used exclusively for this purpose. The manufacturer accepts
no liability for any form of damage resulting from improper use.
The level sensor has been developed, manufactured and tested in accordance with the latest
good engineering practices and generally accepted safety standards. Nevertheless, hazards
may arise from its use. For this reason, the following safety instructions must be observed:
•Do not change or modify the level sensor or add any equipment without the prior
consent of the manufacturer.
•The installation, operation and maintenance of the level sensor only be carried out
by expert personnel. Specialised knowledge must be acquired by regular training.
•Operators, installers and service technicians must comply with all applicable safety
regulations. This also applies to any local safety and accident prevention regula-
tions which are not stated in this guide.
The safety instructions in this guide are marked as follows:
If these safety instructions are not observed, it may result in the risk of acci-
dent or damages to the TORRIX XTS level sensor.
Useful information which ensures continued and correct operation of the
TORRIX XTS level sensor and makes your work easier.
REACH Regulation
The TORRIX sensors contain a lead-titanium-zirconium-oxide, which belongs to
the substances of very high concern (SVHC) according to Regulation (EG) No.
1907/2006 (REACH). A corresponding note can be found on our website at:
www.fafnir.com.

Design and Function Page 4/47
3Design and Function
The level sensors consist of a probe head (1) and a probe tube (4) made of stainless steel.
The probe tube is height-adjustable with a screw-in body (3) or mounted with a flange in
the tank or outside the tank as a bypass. A float (5) for measuring the product filling level
and another float (6) for continuous interface measurement move on the probe tube.
Figure 1: How the magnetostrictive measuring principle works
The sensor operates according to the magnetostrictive measuring principle. The probe tube
contains a wire (7) made of magnetostrictive material. The sensor electronics (2) transmit
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
interface float (6). The magnetic field of the float magnets (9) axially magnetises the wire in
this area. The superposition of the two magnetic fields produces a torsional wave (10) at the
float position, which then propagates along the wire in both directions. 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 torsion
pulses arriving at the probe head is measured and the float position calculated. The position
of the interface float 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 – Interface 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

Page 5/47 Design and Function
3.1 TORRIX XTS with Screw Connection
Figure2: TORRIX XTS (with screw connection)
128
Sondenlänge / Probe length
Position 2
Position 1
Sondenkopf /
Probe head
4 mA /
20 mA
20 mA /
4 mA
91
83
Erdungs-
anschluss /
Earth connector
Verschluss-
schraube /
Screw plug
M20×1,5
Displayeinheit /
Display module
Sondenrohr /
Probe tube Ø12
Schwimmer /
Stellring demontierbar /
Guard ring dismountable
Verschraubung
nach Auftrag /
Screw connection
on order
Probe length
Probe head
Display unit
Screw plug
M20x1.5
Earth connector
Locking screw
Screw connection
on order
Probe tube Ø12
Product float
Guard ring dismountable

Design and Function Page 6/47
3.2 TORRIX XTS with Flange
Figure3: TORRIX XTS F (Flange)
Probe head
Display unit
Screw plug
M20x1.5
Earth connector
Locking screw
Flange depending on order
Probe tube Ø12
Product float
Guard ring dismountable
Installation length on order

Page 7/47 Design and Function
3.3 TORRIX XTS for Bypass
Figure 4: TORRIX XTS B (Bypass)
Distance probe tube to float centre:
max. distance depending on the bypass float
Probe length
Measuring range
Probe head
Display unit
Screw plug
M20x1.5
Locking screw
Earth connector
Bypass float
Bypass tube
Magnet position
Probe tube stressfree
mounted (undeformed)
Spacer
Probe mounting
(non-magnetic)
SECTION A-A
SCALE 1:2