Dwyer 熱式流量開關 TDFS2系列

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產(chǎn)品簡介

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 pr......

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產(chǎn)品特色

? Better reliability and life expectancy than mechanical flow switches with no paddles or vanes to wear or break, no jams in the paddle movement, and no seals on movement assembly to wear or leak

? Not affected by empty pipe as it avoids overheating by actively heating above the process temperature and then cooling down to process temperature

? Low pressure drop; only needs to be inserted 10% into the flow (e.g. 1/8" for 3/4" schedule 40 pipe)

技術指標

Service Compatible water-based fluids

Wetted Materials 316SS

Pipe Range 1/2 to 1-1/2" (15 to 40 mm) or 2 to 10" (50 to 250 mm) (model selectable)

Set Point Range 0.5 to 10 ft/s (0.15 to 3.0 m/s)

Repeatability 0.07 ft/s (0.02 m/s) +3% of setpoint

Typical Deadband 0.1 ft/s (0.03 m/s) +15% of setpoint

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 or cable glａnd with 4 conductor 22 AWG 6' (1.83 m) long (model selectable)

Process Connection 1/2" NPT or BSPT male (model selectable)

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

選項配件

Image	Model Number	Description
	100571-00	Replacement set point magnet
	A-TEE-SS-1	1" NPT SS Tee
	A-TEE-SS-1-BSPT	1" BSPT SS Tee
	A-TEE-SS-1-1/2	1-1/2" NPT SS Tee
	A-TEE-SS-1-1/4	1-1/4" NPT SS Tee
	A-TEE-SS-1-1/4-BSPT	1-1/4" BSPT SS Tee
	A-TEE-SS-1/2	1/2" NPT SS Tee
	A-TEE-SS-1/2-BSPT	1/2" BSPT SS Tee
	A-TEE-SS-3/4	3/4" NPT SS Tee
	A-TEE-SS-3/4-BSPT	3/4" BSPT SS Tee
	A-WLDT-CS	1/2" NPT CS Weldolet for 2-10" pipe sizes
	A-WLDT-CS-BSPT	1/2" BSPT CS Weldolet for 2-10" pipe sizes
	A-WLDT-SS	1/2" NPT SS Weldolet for 2-10" pipe sizes
	A-WLDT-SS-BSPT	1/2" NPT SS Weldolet for 2-10" pipe sizes