Non Intrusive Liquid Level Sensor Triflex LNI 250

DATASHEET TRIFLEX LNI 250 - NON-INTRUSIVE LEVEL SENSOR
Triflex LNI 250
THE NON-INTRUSIVE LEVEL SENSOR
FOR CONDUCTIVE PRODUCTS
Advantages
Signal output
• Save time and costs in easy installation:
- Single button setup.
- No tank nozzles required.
• New FTC technology.
• Non-intrusive installation, no risks of leakage or
overspill.
• Virtually no maintenance, no moving parts.
• Easy access maintenance without shutting down
your processes, save time and costs!
• Fault detection according to Namur NE43 for
fast error solving.
• Auto calibration, unaffected by product quality
changes: reliable results ALL the time.
• Sensor status indication for easy reference.
• The analog output is a passive 2-wire 4 - 20mA
signal (loop powered) according to the
measured level indication.
• One solid state relais, which is triggerd by a high
or low level alarm.
Applicability
• The Triflex LNI 250 is applicable for measuring
conductive products with a v ≥ 4.
¡
Applications
• The Triflex LNI 250 is specially designed for
non-intrusive level applications of bulk solid
products. It is ideal for situations where it is
undesirable or impossible to make an entry into
a plastic or glass storage vessel or for
aggressive or contamination sensitive products.
icenta Controls Ltd - UK distribution partner for Fluidwell displays
Tel: +44 (0)1722 410777 Email: sales@icenta.co.uk
www.icenta.co.uk
General information
LED indicator
On the front there is a Bi-Color LED which
acts as a level and status information
indicator. The Bi-Color LED is showing the
level relative to the bottom of the device with
color gradually changing from RED at 0% to
GREEN at 100%. The LED is capable of
flashing while maintaining the level
information. Flashing can be either fast,
this indicates a diagnostic error and slow,
this indicates a process warning.
Introduction
The Triflex LNI 250 is designed to measure
the level on the outside of a non-metallic tank
without physical contact with the product.
The LNI 250 incorporates the unique FTC
technology (Field Time Control). This is a
new innovative technology where an electric
field is generated between multiple transmitting electrodes and a receiving electrode.
The cycle time of the FTC level sensor
changes as soon as a product intervenes this
electric field. Multiple electrodes are
embedded to detect the level of relative high
dielectric material (¡v • 4). The Triflex LNI
250 transmitter does not require moving parts
or product contact that may be subject to
failure situations. Applications with a sensor
with FTC Technology provide a more reliable
and cost effective solution.
Easy one button operation
Pressing the button during normal operation
stores the measurement values from the
sensors as the initial situation. This should be
performed with an empty vessel/container
only. This information is kept during power
down.
Mounting conditions
The LNI 250 must be placed directly and
tight to the non metallic tank or vessel. There
are two mounting options. There is a strap
mounted possibility and an adhesive tape
option is pending.
Operation
The Triflex LNI 250 series is non-intrusive by
attaching the level measurement to the
outside of a non-metallic tank, there is no
need to drill or cut the tank wall and there is
also no contact with the product being
measured. There are no moving parts and
therefore no cleaning or maintenance
requirements. It is not an optical system, so
the tank/silo doesn’t need to be transparent.
This reliable non-invasive technology can be
applied to many different products and once
installed is easily to set up. Press the button
once, while connected to an empty tank and
the system is up and running.
Triflex LNI 250
Analog output signal
The analog output is a passive 2-wire 4 - 20mA
signal (loop powered) according to the
measured level indication.
Alarm output
The solid state output can be used as an
alarm for either low or high level alarm.
Default it is set on the 2nd transmitting
electrode from below as a low level alarm.
It can however be factory set to any
transmitting electrode segment required
(option D).
2
Dimensions enclosures
Technical specification
Enclosure
Material
Dimensions
Galvanised aluminum and ABS / PA.
365 / 465 / 565 / 665 x 163 x 37mm H x W x D.
Power requirements
Power supply
Lift-off
Voltage@4mA
Min. operating
Voltage@20mA
12 – 34V DC.
~ 11V DC.
~ 9V DC.
Operating specifications
Temperature
Max. load
resistance
Sensor
resolution
Response time
-40°C to +80°C (-40°F to +178°F).
550 ohm.
15mm.
1 second.
Sensor output
Analog output
2-wire 4 - 20mA (loop powered).
conform to Namur NE43.
4 - 20mA (0-100%).
Current
3.8mA (saturating below -1.25%).
signalling
20.5mA (saturating above 103%).
3.6mA (fault current low value).
21mA (fault current high value).
Alarm output
Solid state 50V AC/DC.
Non-trip current 39mA (at 25°C).
Min. trip current 59mA (at 25°C).
Data protection
Type
Terminal connections
Length options
Type L03
ANALOG SENSOR OUTPUT
/ POWER SUPPLY
1
2
3
4 - 20mA, loop powered
+
-
ALARM
PULSE OUTPUT
4
Non volatile backup of all settings.
Type L04
(Pending)
Type L05
(Pending)
5
Type L06
(Pending)
Solid state relay
Measuring length:
Total length:
Segments:
Measuring length:
Total length:
Segments:
Measuring length:
Total length:
Segments:
Measuring length:
Total length:
Segments:
Applicability example
=
Acetone
Corn
Glycol
Hydrochloric Acid
Nylon
Syrup
Water
=
3
¡v = 20.7
¡v = 5.0 - 10.0
¡v = 37.0
¡v = 4.12
¡v = 4.0 - 5.0
¡v = 50.0 - 80.0
¡v = 4.0 - 88.0
300mm.
365mm.
20 pcs. (0.8mA / segment).
400mm.
465mm.
27 pcs. (0.6mA / segment).
500mm.
565mm.
34 pcs. (0.5mA / segment).
600mm.
665mm.
40 pcs. (0.4mA / segment).
Ordering information
Model
LNI 250
Type
Approval
Options
Ordering Code
L03
L04 (Pending)
L05 (Pending)
L06 (Pending)
0
A
B
C
D_ _
E
Description
Triflex LNI 250 Level transmitter.
Measuring length: 300mm - Total length: 365mm – Sensor segments: 20 pcs.
Measuring length: 400mm - Total length: 465mm – Sensor segments: 27 pcs.
Measuring length: 500mm - Total length: 565mm – Sensor segments: 34 pcs.
Measuring length: 600mm - Total length: 665mm – Sensor segments: 40 pcs.
General purpose.
No options.
Sensor tape mounted preassembly.
Sensor strap mounted preassembly.
Customer set alarm*.
Bottom-up assembly.
* default alarm is at 2nd electrode from below as low alarm. If you require the alarm at another electrode, just add the electrode number from below to the
ordering code e.g. D04 is the alarm at the 4th electrode from below.
General overview
Analog output loop powered, ground & high/low level alarm output.
Designated for factory setup and diagnostics (do not connect to a network device).
This connector can be used to operate MODBUS type communication with the device.
Bi-Color LED: Indicates level and status information.
Push-button: - Stores the measurement value at calibration.
- Shows the set-up mode NE43 conditions (burn out low / high / none).
Specifications are subject to change without notice.
Fluidwell Instruments bv
P.O. Box 6
5460 AA - Veghel - The Netherlands
icenta
Controls
Ltd, Unit 3 The Woodford Centre, Lysander Way, Old Sarum Park, Salisbury, SP4 6BU, UK
Tel.: +31
(0)413 343786
Fax.:+44
+31 (0)1722
(0)413 363443
Tel:
410777 Lo-Call: 0844 543 0844 Fax: +44 (0)1722 326818
instruments@fluidwell.com
Email:
sales@icenta.co.uk www.icenta.co.uk
www.fluidwell.com
Copyright: Fluidwell bv - 2013 - TRIFLEXLNI250-DATA-EN-V1333
Connector 1:
Connector 2: