The SERIES TDFS Thermal Flow Switch uses impulse thermal dispersion measurement technique to indicate whether the flow rate is above or below a user set flow rate. It provides NO and NC NPN outputs and two LED, one green and one red for high and low set point indication

Model

Description

TDFS-1-P-06

Thermal Dispersion Flow Switch, 316SS and polysulfone, 1/2" NPT process connection, 6' of cable with cable gland.

Specifications

Service:

Compatible water-based fluids.

Wetted Materials:

316 SS, Polysulfone, and FKM.

Setpoint Range:

0.5 to 10 ft/s (0.15 to 3.0 m/s).

Repeatability:

0.07 ft/s +3% of setpoint.

Typical Deadband:

0.1 ft/s +15% of setpoint.

Temperature Limits:

Process: 5 to 185°F (-15 to 85°C) (non-freezing); Ambient: 5 to 167°F (-15 to 75°C), Storage: -40 to 185°F (-40 to 85°C).

Pressure Limits:

300 psig (20.67 bar).

Response Time:

Approximately 8 s.

Power Requirement:

9 to 24 VDC.

Switching Current:

400 mA, derate 5 mA/°C above 23°C.

Current Consumption: Average:

93 mA, Peak: 300 mA.

Electrical Connection:

4 conductor 22 AWG, 6' (1.83 m) long with cable gland.

Process Connection:

1/2" NPT male.

Enclosure Rating:

NEMA 4X (IP65).

Housing Materials:

316 SS, 416 SS, polycarbonate, neoprene, and acrylated urethane.

Switch Type:

1 NO NPN, 1 NC NPN.

Input Power and Protection:

0.5A fuse (resettable) reverse polarity protected.

Switched Output Protection:

0.5A fuse (resettable) reverse polarity protected.

Agency Approvals:

CE.