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Non-Mechanical, Low Pressure Drop, Large Pipe Sizes
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 easily field adjustable with included magnet and the unit has both NO and NC NPN outputs.
应用及案例
• Boiler flow proving
• Hot water heaters
• Chillers
• Liquid transfer systems
产品特色
• 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)
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
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 |
Model | Description |
TDFS2-1-P-06 | Thermal dispersion flow switch for pipe size 1/2 to 1-1/2" (15 to 40 mm), 316SS, 1/2" NPT process connection, 6' of cable with cable gland. (Standard length) |
TDFS2-2-C-06 | Thermal dispersion flow switch for pipe size 2-1/2" to 10" (65 to 250 mm), 316SS, 1/2" NPT process connection, 6' of cable with conduit connection. (Extended length) |
TDFS2-2-P-06-BSPT | Thermal dispersion flow switch for pipe size 2-1/2" to 10" (65 to 250 mm), 316SS, 1/2" BSPT process connection, 6' of cable with conduit connection. (Extended length) |
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