Flow sensors

Gas Flow Sensor FM350

Technical specification

• Display accuracy ± 3% F.S.
• Repeatability ± 3% F.S.
• Electronic display of instantaneous flow rate
• View accumulated traffic
• With switch output NPN/PNP output function
• Analog: Voltage output 1~5 V
• Analog output: Current output 4~20 mA

Wiring diagram

One switch + one analog

RS485 communication

Technical parameter

Display range

Display rage

Accuracy guarantee range

Display accuracy

repeatability

Linear form

Output mode

Return difference

Output short-circuit protection

Current output

Communication interface

No-load current

Service pressure range

Class of protection

temperature

humidness

Insulation impedance

Withstand voltage

Model number	0005	0010	0050	0100	0200	1000	2000
	Dry air, nitrogen (N2), non-corrosive, non-flammable
Sensing element Rated flow range Detection direction	0 ~ 5 L/min	0 ~ 10 L/min	0 ~ 50 L/min	0 ~ 100 L/min	0 ~ 200 L/min	0 ~ 1000 L/min	0 ~ 2000 L/min
	unidirectional
display Instantanous flow	0 ~ 5.25 L/min	0 ~ 10.50 L/min	0 ~ 52.5 L/min	0 ~ 105.0 L/min	0 ~ 210 L/min	0 ~ 1050 L/min	0 ~ 2100 L/min
	0.01 L/min	0.01 L/min	0.1 L/min	0.1 L/min	1 L/min	1 L/min	1 L/min
	linearity
	±3% F.S. + 1digit
precision Analog output accuracy	±3% F.S. + 1digit
	±3% F.S. + 1digit
	±3% F.S.
switching output Reaction time	800 ms (50 ms, 80 ms, 120 ms, 200 ms, 400 ms, 1500 ms Can be Selected)
	Hysteresis mode, window mode, pulse mode(full scale 150 Hz)
	tunable
	YES
Analog quantity exportation Voltage output	Output voltage range: 1 ~ 5 V
	Output Impedance: 1 KΩ
	Output current range: 4 ~ 20 mA
	Load Impedance: ≤ 300Ω
Reaction time	≤ 100 ms
	RS485 JIS
Power source Supply voltage	12 ~ 24 V DC ± 10%
	≤ 50 mA
	-0.09 ~ 0.8 MPa
Pressure resistance	1 MPa
	IP40
Environment al requirement Medium temperature	0 ~ 50 °C (no water dew and no ice)
	Action: 0 ~ 50 °C, storage: - 10 ~ 60 °C (no water dew and no ice)
	Operation and preservation: 35 ~ 85% R.H. (waterless dew)
	≥ 50 MΩ (500 V DC, between leads and plastic housing)
	1000 V AC 1 min (between leads and plastic housing)
EMC	IEC 61000-6-2, IEC 61000-6-4
Wire specification	Ø4 Oil resistant PVC (0.25m 2) -4 cores
Weight (including 2 m of wire)	Approx. 109.3g (Ø6 connector); Approx. 112.7g (Ø8 connector); Approx. 118 g (Rc1⁄4 connector); Approx. 128.5g (Rc1⁄8 connector)

※1: The standard inlet pressure is 300 kPa, outlet pressure is 1 atmosphere, and temperature condition is 25 °C (factory standard).

※2: -0.09 ~ 0.8MPa, 1 atmospheric pressure at the outlet, 25 °C temperature (factory standard)

Size drawing (mm)

Mounting bracket

Regulating valve size diagram (mm)

Selection list

FM350- / FM350-	0005	NV	D6	-	-	expatiate
FM350-						FM350 Gas flow sensor
	0005					Flow range: 5 L/min
	0010					Flow range: 10 L/min
	0050					Flow range: 50 L/min
	0100					Flow range: 100 L/min
	0200					Flow range: 200 L/min
	1000					Flow range: 1000 L/min
	2000					Flow range: 2000 L/min
		NV				Output signal: NPN + analog 1 ~ 5V
		NA				Output signal: NPN + analog 4 ~ 20 mA
		PV				Output signal: PNP + analog 1 ~ 5V
		PA				Output signal: PNP + analog 4 ~ 20 mA
		R				Output signal: RS485
			D6			Nozzle diameter: Ø6mm quick connector, flow range ≤50L/min
			D8			Nozzle diameter: Ø8mm quick connector, flow range 100/200L/min
			R18K			Nozzle diameter: Rc1/8 pipe tooth joint, flow range ≤50L/min
			G18K			Nozzle diameter: G1/8 internal thread, flow range ≤50L/min
			R14K			Nozzle diameter: Rc1/4 pipe tooth joint, flow range 100/200L/min
			G14K			Nozzle diameter: G1/4 internal thread, flow range 100/200L/min
			R12K			Nozzle diameter: Rc1/2 tooth joint, flow range 1000L/min
			G12K			Nozzle diameter: G1/2 internal thread, flow range 1000L/min
			R34K			Nozzle diameter: Rc3/4 pipe tooth joint, flow range 2000L/min
			G34K			Nozzle diameter: G3/4 internal thread, flow range 2000L/min
				-		No bracket
				-T		Tape carrier
					-	No regulating valve
					F	Tape regulating valve (Only ≤200L/min optional)

Optional accessories - Electrical accessories

Application drawing

Technical parameter

• Input specification: Analog quantity (pulse) / PT100 is optional
• Display range: -199.9 ~ 999.9
• Temperature drift: ≤ ±0.015%FS /°C (typical value about ±75ppm/°C)
• Electromagnetic compatibility:
  IEC61000-4-4 (electrical fast transient pulse group), ±4KV/5KHz;
  IEC61000-4-5 (Surge), 4KV
• Output function: Switch / analog quantity is optional
• Power supply: 24VDC ±20%
• Power consumption: ≤ 3W
• Operating environment: temperature -10~+60°C; Humidity ≤ 90%RH

Size drawing (mm)

Panel mounting

Wiring diagram

Panel opening size

Order model	Technical Description
S10-21	Input signal: Analog quantity Output signal: Output by two switches	Display unit: L/min