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Laminar Flow Gauge DF-241BA


This flow gauge is ideal for flow or leak test in the production line

Highly accurate and highly responsive sensor instantly measures the flow rate. DF-241BA is ideal for flow or leak test in the production line.

Edge & Function


*High Accuracy ±2% of F.S.

*Highly responsive with Laminar flow tube

*Various flow ranges available

*Stability and durability using highly accurate and high proof pressure DPS

*Temperature sensor for automatic temperature compensation

*Multifunctional display designed to meet various measurement requirements

Multifunctional display
Number of Channels 10 channels
Upper/Lower Limits 4 Settings: HH, HI, LO, LL
Zero Adjustment One push Zero method
Auto-Zero Auto-Zero button
Display Hold Hold button
Display Response Digital Filter (High, Medium, Low)
RS-232C 1200, 9600, and 19200 bps switchable
BCD Output Open Collector
Display Digits 3.5 digits (1999) and 4.5 digits (19999)
Sample Rate 250 ms and 50 ms switchable
User Span 0.001 to 9.999 (Default: 1.000)


Laminar Flow Tube Flow Range 10, 20, 50, 100, 200, 500 mL/min
1, 2, 5, 10, 20, 30, 50, 100, 200, 500 L/min
Pressure Media Air
Accuracy ±2% of F.S. ±1 digit
Conversion Temperature / Atmospheric Pressure 20℃ (or 0℃)
Flow rate is based on 1 atmospheric pressure
Operating Temperature 5 to 35℃
Test Pressure Depends on the selected flow ranges
Temperature Sensor Built in the Laminar Flow Tube or connected to the outlet of Laminar Flow Tube
Generated Differential Pressure Approx. 0.6 kPa at F.S. flow
Pressure Loss 150% of Measured Differential Pressure
Port Size Differential Pressure Connection Port: Rc 1/8
Flow Sensor Connection Port: Refer to “Laminar Flow Tube Flow Ranges” on the next page
DPS Proof Pressure 1 MPa (PT-110FC-A), 10 kPa (PT-103B-A)
Power source 24 VDC ± 10%, 0.3A max With A/C Adaptor
External Dimensions Display: W140 × H66 × D172 mm
Panel Cutting Dimensions W133 x H61 mm
Documents Traceability documents, Operation manual


■ Model DF-241BA(A.B.CDE.F)(Flow Calib Range.Line Pressure.G)

A, B, C, D, F and G in the model notation are mandatory.

A Laminar Flow Tube Range See the Laminar Flow Tube Range List
B DPS High Line Press C PT-110C-A (Standard)
Low Line Press B PT-103B-A (10 kPa or Less)
C DPS Cable Length D3 3 m (Standard)
D5 5 m
D10 10 m
D Temperature Sensor
Cable Length
E3 3 m (Standard)
E5 5 m
E10 10 m
E Option Analog Output F1 F.S. 5 V
F2 F.S. 10 V
F3 Match with display
Interface *1 Q1 Input 5 V
F Power With A/C Adapter
VG 100 VAC cable 3 m
VH 240 VAC cable 2 m
VK 240 VAC cable 2 m (Only for Chinese customers)
Without A/C Adapter VJ External 24 VDC is required.
G Conversion Temperature S 20 ℃
N 0 ℃

*1 Standard input is 24 V.

Laminar Flow Tube Range

Codes Model Max. Line pressure Port Size Temperature Sensor
10ML LF-104N-10C 990 kPa 1/4″ Built-in
20ML LF-104N-20C
50ML LF-104N-50C
100ML LF-104N-100C
200ML LF-104N-200C
500ML LF-104N-500C
1L LF-104N-1L 700 kPa
2L LF-104N-2L
5L LF-104N-5L
10L LF-104N-10L 500 kPa 1/2″
20L LF-104N-20L
30L LF-104N-30L
50L LF-105BN-50L 350 kPa
100L LF-105BN-100L 200 kPa
200L LF2-200L 50 kPa 3/4” Connected to the outlet of Laminar Flow Tube
500L LF2-500L