Baumer CleverLevel LFFS Operating Instructions Manual
Operating instructions
CleverLevel switch, LFFS
CleverLevel switch, type LFFS is an universal level switch, which
can be used for all applications in liquids and solids with a DC-value
above 1.5
Safety instructions
This instrument is constructed and tested according to the current EUdirectives and packed in technically safe condition. In order to maintain
this condition and to ensure safe operation, the user must follow the
instructions and warnings given in this instruction.
During the installation local standards have to be observed. Ignoring the
warnings may lead to severe personal injury or substantial damage to
property.
The product must be operated by trained staff. Correct and safe operation of this equipment is dependent on proper transport, storage, installation and operation.
All electrical wiring must conform to local standards and the connection
must be made according to the connecting diagrams.
Before switching on the power supply take care that other equipment is
not affected. Ensure that the supply voltage and the conditions in the
environment comply with the specification of the device.
Before switching off the supply voltage check the possible effects on
other equipment and the processing system.
To obtain the specified protection degree, the LFFS must be mounted
with a compliant cable.
Description
The Level Switch LFFS designed to detect levels in tanks, media separation and provide empty-pipe detection or dry-run protection
for pumps.
By means of the FlexProgrammer 9701 the output can be configured to either NPN, PNP or digital output signal. A damping of the
output signal can be activated in case of a fluctuating media level, e.g. during tank filling.
The measurement is precise and unaffected by the mounting position in the tank. In the Flex-software a compensation for foam,
bubbles and condensate as well as viscous media can be set.
The Flex-software also features an adjustment facility making the user able to adjust the sensor to a specific media.
The Level Switch LFFS measures liquids such as water and beer as well as viscous, sticky fluids, such as honey, yoghurt, toothpaste and ketchup. Even dry medias can be measured, e.g. sugar or flour.
The Level Switch LFFS is resistant against CIP and SIP agents.
Hygienic installation is also possible with the comprehensive range of accessories, see the overview at page 6.
WARNING
When the top cover is removed, do not look directly at the blue LED with unshielded eyes or damage to retina may occur !
This product contains no replaceable parts. In case of malfunction the product must be shipped to Baumer for repair.
www.baumer.com Operating instructions: 11109132 07 EN Page 1 / 12
2017-06-08 Design and specifications subject to change without notice
Operating instructions
CleverLevel switch, LFFS
Measuring principle
An electrode inside the sensor tip builds a capacitor together with the
surroundings. The medium with its dielectric constant (DC value) is
defining the capacitance value. A resonance circuit is created in combination with a coil in the sensor head. Switching signal tripping is
according to the measured resonance frequency and the programmed
trigger thresholds.
Dimensions
G½ hygienic 3A DN38 hygienic G½ hygienic sliding connection
19,0
31,5
14,5
Mounting
Please refer to “Accessories” data sheet. The welding part has
an engraved mark or a leak hole. When the product has been
mounted and correctly tightened the gland or M12 plug will
align with this mark.
Make sure that the gland/plug is pointing downwards to prevent fluids from penetrating into the instrument.
Use only the authorised special designed accessories. The
product warranty is void when installed with other adapters.
Do not use PTFE, fibre or other gaskets. The PEEK tip against
the stainless steel welding part will perform a hygienic tightening provided that the guidelines have been followed.
Due to the measuring principle it is essential that the sensor tip
can “see” an ample amount of the metal shaft or welding part.
Safety
wire
100
or
250
Mounting instructions for sliding connection:
1) Clean the sliding shaft.
2) Mount the smallest ring against the media as indicated.
3) Tighten the G1/2 Hygienic sliding nipple at 25...30 Nm.
4) Replace the Washer ring kit when one or both parts are
permanently deformed or stick to the shaft of the sliding
connection.
WARNING
The Level Switch LFFS with sliding connection can be mounted
in installations with a static pressure up to 16 bar.
To prevent personal injuries or property damage it is essential
that the safety wire is mounted correctly and is undamaged.
Sliding
connection
G½
2 × PEEK
sealing
washers
Spare part set:
ZPX1-006
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Mounting
Operating instructions
CleverLevel switch, LFFS
The industrial versions with thread must be sealed e. g. by gasket or
Teflon® tape and tightened into the counterpart.
Installation of hygienic 3-A approved and EHEDG certified products,
please refer to below:
1) Use only a 3-A approved counterpart.
2) The leak detection port should be visible and drained.
Example with
ZPW2-321
Refer to the data sheet “Accessories” for O-rings, gaskets and other
accessories.
If the PEEK sealing rings for sliding connection is damaged or seriously scratched, the instrument or sealing rings should be replaced
(type ZPX1-006).
5) The 3-A mark or the arrow shall be placed upwards.
6) Welding should be grinded to Ra ≤ 0.8.
7) Tighten the instrument in the adapter with a torque of 15...20 Nm.
WARNING
Cannot be
drained
Fitted
Example
with ZPW2-626
Example
with ZPW2-621
Leak detection port
must be placed at the
lowest possible position.
After installation:
Check the leak tightness of the sleeve.
Check the tightness of cable glands or M12 plug.
The switch provides IP67 protection in cable version or if installed
with IP67-compliant M12 cable. Switch installation using an IP69K
cable ensures IP69K conformity.
NOTE
The M12 cable rotating nut must be tightened by hand force only.
Max. torque is 0.6 Nm. Do not use any tool.
Stainless
steel tube
If the seal is leaking and the media appears in the leak detection
port, the seal is to be changed immediately.
Before reassembly, clean the hole and inside of the connection with
detergent and sanitising liquid. Use a small brush. Verify that all of
the inside area is completely clean.
Reassemble and verify that the connection is tight.
NOTE
The CleverLevel switch is to be mounted in a closed metal pipe, tank
or container.
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Operating instructions
CleverLevel switch, LFFS
Mounting connections
ISO2852 SMS 1145 Welding
DN38: ZPH1-3213 DN51: ZPH1-3236 for tank
DN51: ZPH1-3216 ZPW2-321
Varivent®, type N DIN 11851 Welding
ZPH1-324E DN25: ZPH1-3221 for tank
DN40: ZPH1-3224 ZPW2-322
DN50: ZPH1-3225
DIN 11864-1/A Welding Ø35
DN 40: ZPH1-3254 for tank/tube
DN 50: ZPH1-3255 ZPW2-324
Adapter Welding
EH FTL to pipe extrusion
G¾A: ZPH1-32BA DN 25...DN50: ZPW2-326
G1A: ZPH1-32CB DN 65...DN150: ZPW2-327
VS
G¾A: ZPH1-32BC
G1A: ZPH1-32CD
Adapter Adapter, industrial Adapter, industrial
G½ → G1 G½ → G1: ZPI1-32B Sliding connection
ZPH1-32C0 G½ → G1½: ZPI1-32D G½ → G½: ZPI1-32A
G½ → G2: ZPI1-32E
Welding
for tank
ZPW2-621
Welding
for pipe end
ZPW2-626
On a welding adapter there is an
arrow or a 3A logo.
This must be placed upwards when
welding the adapter into a tank
(horizontal position).
This assures that the electrical connection will be pointing downwards
(opposite of the arrow; 3A logo)
Refer to data sheet ”Accessories Universal” for further
information
NOTE:
The LFFS must be mounted in a Baumer mounting
connection.
If not, Baumer do not guarantee correct function or
tightness.
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