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Series TFS Thermal Flow Switch

Adjustable Setpoint, LED Flow Indication, NO or NC Output

The Series TFS Flow Switch with adjustable setpoint offers precise flow monitoring of water-based fluids. Units have five selectable flow range settings from 0.2 m/s (0.66 ft/s) to 3.0 m/s (9.8 ft/s). Flow is indicated as a percentage of the flow range on a string of LEDs. The setpoint, adjustable from 15% to 90% of the flow range setting, is displayed as a flashing LED.

Service: Water-based fluids.
Wetted Material: 303 stainless steel.
Measuring Ranges: 0.2 m/s (0.66 ft/s), 0.4 m/s (1.3 ft/s), 1.0 m/s (3.3 ft/s), 2.0 m/s (6.6 ft/s), and 3.0 m/s (9.8 ft/s).
Repeatability: Less than 2.0%.
Linearity: Less than 5%.
Hysteresis: 10% (approximate).
Temperature Limits: -4 to 176°F (-20 to 80°C).
Pressure Limits: 435 psi (30.0 bar).
Housing Material: Glass fiber reinforced PBTP (Ultradur), meets IP65.
Setpoint Range: 15% to 90% of range setting.
Response Time: 2 to 10 seconds (relative to range setting).
Supply Voltage: 18 to 30 VDC, including residual ripple.
Switching Current: 400 mA maximum.
Power Consumption: 1 watt (approximate).
Electrical Connection: Plug-in 78" (198 cm) oilflex cable (included).
Process Connection: 1/2"-14 male NPT.
Weight: 0.66 lb (301 g).
Agency Approvals: CE.
Ordering Information
Model Number Switching Output
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