Clamp-On Gas Flow Meter DN 150A/200A FD-G200

FD-G200 - Clamp-On Gas Flow Meter DN 150A/200A

*Please note that accessories depicted in the image are for illustrative purposes only and may not be included with the product.

Data Sheet (PDF)


CAD Data

360°view (3D PDF)


  • CE Marking
  • CSA




Pipe size

DN (Diameter Nominal)

150 A, 200 A

NPS (Nominal Pipe Size)

6", 8"

Outer diameter of pipe

ø163 to 171 mm 6.42" to 6.73", ø214 to 222 mm 8.43" to 8.74"

Pipe thickness

3.5 to 8.7 mm 0.14" to 0.34"

Supported pipe materials

Iron, steel, stainless steel

Supported fluids

Air, Nitrogen, other gases*1

Fluid temperature

0 to 60ºC 32 to 140 °F

Recommended pressure

0.4 MPa or greater (58 PSI or greater)

Rated velocity of flow range

Up to 15 m/s

Actual flow rate range (typical)


Pipe size 150 A: 1000.0
Pipe size 200 A: 1800.0


Pipe size 150 A: 17000
Pipe size 200 A: 30000


Pipe size 150 A: 600.00
Pipe size 200 A: 1100.00

Standard flow rate range (typical) [CFM]

20°C 68°F 60 psi 0.41 MPa

Pipe size 150 A: 2842.15
Pipe size 200 A: 5210.62

20°C 68°F 80 psi 0.55 MPa

Pipe size 150 A: 3603.18
Pipe size 200 A: 6605.84

20°C 68°F 100 psi 0.69 MPa

Pipe size 150 A: 4364.21
Pipe size 200 A: 8001.06

20°C 68°F 120 psi 0.83 MPa

Pipe size 150 A: 5125.24
Pipe size 200 A: 9396.28


QVGA 2.2" LCD color monitor

Display update cycle

Approx. 3 Hz

Display resolution

Instantaneous flow rate

0.1 m3/h, 1 L/min, 0.1 CFM

Consumption/leakage amount

0.1 m3, 1 L, 1 CF

Response time

1.0 s/2.5 s/5.0 s/10.0 s/30.0 s/60.0 s/120.0 s/200.0 s (variable)

Measurement accuracy

Between 10 and 100% of F.S.

±2.0% of RD*2*3*4*5

Between 1 and 10% of F.S.

±1.0% of F.S.*2*3*4*5

Zero point error

±0.15% of F.S.*2*6

Static leakage repeatability

±1.0% of RD*4*7



Flow units

CFM(S), CFM, m3/h (N), m3/h (S), m3/h, L/min (N), L/min (S), L/min

I/O wiring connection port

M12 4-pin connector (male)

Detection mode (switchable)


Instantaneous flow mode/area mode/pulse (+) mode/integrated flow mode/warning mode (consump)*8


Instantaneous flow mode/area mode/pulse (−) mode/warning mode (leak)/error output mode/analog output/integrated flow reset/flow rate zero input/origin adjustment input*8

Standard I/O (switchable)

Control output (ch.1/ch.2)

NPN/PNP setting switchable, open collector output 30 VDC or less, max. 100 mA/ch, residual voltage: 2.5 V or less

Analog output (ch.2)

4 to 20 mA/0 to 20 mA, load resistance: 500 Ω or less

External input (ch.2)

Short-circuit current: 1.5 mA or less, input time: 20 ms or more

Protection circuit

Power supply reverse connection protection, power supply surge protection, short-circuit protection for each output, surge protection for each output

Analog input (for volume conversion)

M8 4-pin connector (female), analog current input (4 to 20 mA), input resistance: 100Ω or less

Power supplied to pressure sensor

Supply voltage: Equivalent to voltage applied to the FD-G, Supply current:70 mA or less (analog output of the pressure sensor included)

Communication interface


USB 2.0



IEEE 802.3u (100BASE-TX)

Transmission rate

100 Mbps


Category 5 or higher STP (shielded twisted pair) or UTP (unshielded twisted pair) cable


M12 connector (female, D-code)

Network function

Modbus TCP, EtherNet/IP™, IO-Link*9

Recording capacity

Consumption amount/ leakage amount

Approx. 5 years



Power supply

Power voltage

20 to 30 VDC including 10% ripple (P-P), Class 2

Power consumption

350 mA or less at 20 V, 290 mA or less at 24 V, 230 mA or less at 30 V (load current excluded) (analog output of the pressure sensor excluded),
550 mA or less at 20 V, 490 mA or less at 24 V, 430 mA or less at 30 V (Maximum load current excluded) (analog output of the pressure sensor excluded)

Environmental resistance

Enclosure rating

IP65/67 (IEC 60529)*10

Ambient temperature

Detection head: −10 to +60°C 14 to 140°F (no freezing), display unit: −10 to +55°C 14 to 131°F (no freezing)

Relative humidity

5 to 85%RH (no condensation)

Vibration resistance

10 to 500 Hz, power spectral density: 0.816 G2/Hz, XYZ axes

Shock resistance

100 m/s2, 16 ms pulse, XYZ axes, 1000 times for each axis


Display unit

Body: PBT + coating, display: PMMA, Power supply port: SUS304-equivalent, Ethernet port: zinc nickel plating

Detection head

Body: PPS/SUS304, rear surface: rubber

Mounting/damping bracket



Approx. 2.8 kg

*1 The gas must be uniform and capable of transmitting ultrasonic waves. Measurement may be unstable due to the pressure inside of the pipe and the type of gas.
*2 This value is guaranteed by KEYENCE inspection facilities. Errors will be introduced by factors such as the type and status of the pipe and the type and temperature of the gas.
*3 This is the value when considering linearity + span error in a stable environment with a temperature of 25°C 77°F.
*4 Defined with stable velocity of flow distribution. Does not include pulsations and fluctuations in the velocity of flow distribution primarily attributable to the equipment.
*5 The linearity error characteristic due to the pipe is not included in this value.
*6 It is possible to reduce zero point errors by performing an origin adjustment.
*7 This is the value within the range where measurement accuracy is guaranteed.
*8 When Bi-directional is specified, the following functions cannot be used. The selection of the comparison view/leak ratio view/static leakage, the measurement/display of the leakage amount/integrated flow, the setting of the target value/warning set value, and money conversions. Also, the I/O settings are limited as shown below.
• ch.1: Pulse(+) mode
• ch.2: Pulse(-) mode, Error output mode, Integrated flow reset, Flow zero input, Origin adjustment input
*9 IO-Link: Compatible with specification v1.1/COM1 (4.8 kbps). IO-Link is a trademark or registered trademark of PROFIBUS Nutzerorganisation e.V. (PNO).
*10 The IP65/67 enclosure rating is lost when a USB connection is established.

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