User Manual for LEVIFLOW
®
LFSC-D Flowmeters
www.levitronix.com
PL-4507-00, Rev08, DCO# 20-024
7
2.3 Specifications of Flow Sensors
Characteristics
LFSC-05D
LFSC-08D
LFSC-12D
LFSC-22D
LFSC-30D
Flow Range [l/min]
0
– 1 l/min
0
– 4 l/min
0
– 20 l/min
0
– 80 l/min
0
– 160 l/min
Accuracy of Reading
(Tubing variation not included.)
±5 % for > 25% of FS
±12.5 ml/min for < 25% of FS
±3 % for > 15% of FS
±18 ml/min for < 15% of FS
±3 % for > 15% of FS
±90 ml/min for < 15% of FS
±3 % for > 15% of FS
±360 ml/min for < 15% of FS
±3 % for > 15% of FS
±720 ml/min for < 15% of FS
Weight
212 g
211 g
208 g
327 g
502 g
Maximum Fluid Pressure
(max. pressure of tube might limit this value)
6.5 bar
6.5 bar
6.5 bar
4 bar
3 bar
Pressure Drop Coefficient C
2
P = C x Q
2
, (for water), Q = Flow [l/min]
P = Press. Drop [kPa = 10 mbar]
4.16 at 20°C
3.77 at 37°C
0.0743 at 20°C
0.0675 at 37°C
0.00725 at 20°C
0.00658 at 37°C
1.49 10
-4
at 20°C
1.34 10
-4
at 37°C
3.9 10
-5
at 20°C
3.5 10
-5
at 37°C
Usable
Flexible Tubing
Dimensions
ID
1/8
” = 3.2 mm
1/4” = 6.4 mm
3/8” = 9.5mm
3/4” = 19.05 mm
1” = 25.4 mm
OD
1/4
” = 6.4 mm
3/8” = 9.6 mm
9/16” = 14.3mm
1” = 25.4 mm
13/8” = 34.9 mm
Wall thickness
1/16” = 1.6 mm
1/16” = 1.6 mm
3/32” = 2.4 mm
1/8” = 3.2 mm
3/16” = 4.8 mm
Standard Tube Material
Saint Gobain C-Flex
®
1
(374, 072 and 082) and Silicone (Pharma 50, 65 and 80)
Fluid / Ambient Temperature
Normal range: 10
– 60
°
C ( 50
– 140
°
F ) / 0
– 40
°
C (32 - 104
°
F)
Measurable Viscosity / Sound Speed
0.7
– 10 mm
2
/s (0.7
– 10 cSt) / 1300 – 1700 m/s (others on request)
IP Classification / Allowed Cleaning
IP-65 / Wiping with IPA or water
Electrical Connector / Cables
Circular type (IP-67), lock-release mounting / Various extension cables available.
Table 5: Specifications of clamp-on sensors LFSC-xxD
1: C-Flex
®
is a registered trademark of Saint Gobain Performance Plastics, 2015. All rights reserved
.
Note 2: Calculated values.
2.4 Specifications of Converters
Characteristics
Description or Values
Power Supply Voltage / Current / Inrush Current
24 VDC ± 10%
/
150 mA
/
3.8 A peak during < 210 µs
Ambient Temp / Humidity Range
0
– 50 °C (32 – 122 °F) / 30 - 85% R.H. (no condensation)
Enclosure Classification and Material
IP-20 (indoor use), ABS
Interfaces
(see Figure 7 for detailed PIN designation and electrical
specification)
- RS485 -> MODBUS protocol -> max. array of 99 channels
- 1x Analog Output: 4
– 20mA (0 – 20mA configurable)
- 2x Digital Outputs: Flow Alarm, Measurement Error, Volume Counter Pulse, Volume Counter Alarm, Flow as
Frequency or Bubble Detection, Custom Output (default: normally open)
- 1x Digital Input: Volume Counter Reset or Zero Adjust
- 4 Digit display (flow rate, volume counter, error codes), re-zero button
- Address potentiometers for RS485 address setting
Configuration Parameters
(Available and configurable with RS485/USB converter and
service software)
-
Viscosity
-
Low Cutoff
-
Dampening time (filter)
-
Full scale setting
-
Linearization (15 points)
-
Alarm Outputs (High and Low Alarm)
-
Volume Counter and Volume Counter Alarm Settings
Weight / Dimensions / Mounting
130 g / 123 x 75 x 17.5 mm / DIN rail
Duration for Digital and Manual Zeroing
Duration of Measurement Ready after Power-On
Duration for activation: 3 sec
Duration of zeroing procedure: normal 26 sec , max. 60 sec
Measurement ready after power-on: 10 sec.
Warm-up for full performance: 30 min.
Table 6: Specifications for converter LFC-1C-PC
Characteristics
6-Channel Converter LFC-6CIO-PC
Power Supply Voltage / Current / Inrush Current
Ambient Temp / Humidity Range
24 VDC ± 10% / 270 mA / Inrush Peak 4.9 A within 180 µs
0
– 50 °C (32 – 122 °F) / 30 - 85% R.H. (no condensation)
Enclosure Classification and Material
IP-20 (indoor use), ABS
Interfaces
(see Table 10 for LFC-6C and Table 10/Table 11/Table 12 for
LFC-6CIO for detailed PIN designation and electrical
specification)
-
RS485 -> MODBUS protocol -> max. array of 99 ch.
- 4 Digit display (flow rate, volume counter, error codes), re-zero button
- Address potentiometers for RS485 address setting
- 6x Analog Outputs: 4
– 20mA (0 – 20mA configurable)
- 6x Digital Outputs: Flow Alarm, Measurement Error, Volume Counter Pulse, Volume Counter Alarm, Flow as
Frequency or Bubble Detection, Custom Output (default: normally open)
- 6x Digital Input: Volume Counter Reset or Zero Adjust
Configuration Parameters
(Available and configurable with RS485/USB converter and
service software)
-
Viscosity
-
Low Cutoff
-
Dampening constant (filter)
-
Full scale setting
-
Linearization (15 points)
-
Alarm Outputs (High and Low Alarm)
-
Volume Counter and Volume Counter Alarm Settings
Weight / Dimensions / Mounting
215 g / 140 x 77.3 x 20.5 mm / DIN rail
Duration for Digital and Manual Zeroing
Duration of Measurement Ready after Power-On
Duration of activation: 3 sec
Duration of procedure: normal 26 sec, maximum 60 sec.
Measurement ready after power-on: 10 sec.
Warm-up for full performance: 30 min.
Table 7: Specifications for multi-channel converter LFC-6CIO-PC
Note: Due to the reduced flow sampling rate per channel, the multi-channel converter LFC-6CIO-PC may not be suitable
for highly dynamic flow measurements in the lower flow range (like for example for flows with sharp pulses caused by
roller pumps).
