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Your Source for Process Measurement & Control

High Accuracy, High Pressure, Low Flowmeters

FTB500 Series

High Accuracy, High Pressure, Low Flowmeters | FTB500 Series

High Accuracy, High Pressure, Low Flowmeters

£1,885.00 FTB501-(CK)

  • 1% of Rate Accuracy
  • 1000 psig, 5000 psig Optional
  • For Flows Down to 0.02 GPM
  • Includes dc or ac Powered Signal Conditioner
  • Linear Pulse and Analog Outputs
Turbine, Paddle Wheel & Positive Displacement Flowmeters - View related products


FTB500 series low flowmeters offer extremely accurate low flow measurement of liquids. They utilize a pelton wheel-like rotor whose motion is converted by a pickup coil into a pulse output that is proportional to flow . Each flowmeter comes with an integral signal conditioner, powered by either 15-35 Vdc or 115 Vac (opt.) to provide amplified frequency and analog outputs. The signal conditioner corrects for the inherent zero offset of the flowmeter pulse output. It is mounted in a NEMA-4, explosion-resistant enclosure rated for class I, groups C & D, class II, groups E, F, and G.

Accuracy: ±1% of rdg for pulse, ±0.05% FS for analog outputs
Analog Output Response Time: adjustable from 0.5 to 2 seconds
Viscosity: 0.8 to 25 cSt, unit calibrated to specific viscosity value
Repeatability: ±0.25% of rdg
Fluid Temperature Range: -268 to 232°C (-450 to 450°F)
Operating Ambient Temperature: -20 to 80°C (-4 to 176°F)
Materials of Construction: 316 SS housing, 440C ball bearings, 17.4 PH rotor, and Rulon-J seals
Connections: ½" 37° flare per MS-33656-8; ½ MNPT adaptor kit opt.
Max Pressure Drop (at 1cSt): 10 psid
Max Pressure: 1000 psig std, 6000 psig optional
TTL Frequency Output: 0 to 125 Hz
Power: 15 to 35 Vdc std, 115 Vac optional
Analog Output: 4 to 20 mA into 375 Ω max std, 0 to 5 Vdc optional
Weight: 2.7 kg (6 lb)


Place Order(Specify Model Number)
Part Number/ Desc.
FTB501-(CK) Star
Availability: 9 weeks
0.02-0.15 GPM
FTB502-(CK) Star
Availability: 9 weeks
0.025-0.25 GPM
FTB503-(CK) Star
Availability: 9 weeks
0.05-0.5 GPM
FTB503-(CK) Star
Availability: 9 weeks
0.05-0.5 GPM
FTB504-(CK) Star
Availability: 9 weeks
0.1-1.0 GPM
FTB505-(CK) Star
Availability: 9 weeks
0.2-2.0 GPM
FTB-K3 Star
Availability: 8 weeks
1/2" MS flare to 1/2" MNPTadaptor kit with 10" upstream and 5" downstream straight SS tubing; weight: 454 g (1lb)
All amounts shown in EUR, GBP, or USD
Note: Comes complete with operator's manual and 10-point NIST calibration ceertificate for 1 centistoke of water.

(*CK) Specify liquid viscosity (in cSt), from 0.8 to 25 cSt. For viscosities other than 1, add $625 to price.

To order with 115 Vac power, add suffix "-115VAC" to model number, add $100 to price.

Standard max pressure is 1000 psig. To order with option 6000 psig max pressure add suffix "-6KP" to model number, add $250 to price.