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DWYER熱式流量開關(guān)TDFS2TheSeriesTDFS2ThermalDispersionFlowSwitchisathermalflowswitchthatindicateswhethertheflowrateisaboveorbelowausersetflowrate
DWYER 熱式流量開關(guān) TDFS2
The Series TDFS2 Thermal Dispersion Flow Switch is a thermal flow switch that indicates whether the flow rate is above or below a user set flow rate. The unit incorporates two LED status indicators providing visual switch indication. The set flow rate (setpoint) is field adjustable and the unit has both NO and NC NPN outputs. See Figure 1 on catalog page for output and LED actions on change of flow
Service:Compatible water-based fluids.
Wetted Materials:316SS.
Set Point Range:0.5 to 10 ft/s (0.15 to 3.0 m/s).
Repeatability:0.07 ft/s +3% of set point.
Typical Deadband:0.1 ft/s +15% of set point.
Temperature Limits:Ambient: 5 to 140°F (-15 to 60°C); Process: 5 to 140°F (-15 to 60°C); Storage: -40 to 185°F (-40 to 85°C).
Pressure Limits:300 psig (20.67 bar).
Response Time:Approx. 8 s.
Power Requirement:9 to 24 VDC.
Switching Current:400 mA, de-rate 5 mA/°C above 23°C.
Current Consumption:Average: 93 mA; Peak: 300 mA.
Electrical Connection:1/2" NPT female with 4 conductor 22 AWG, 6' (1.83 m) long.
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.
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