Models & Ordering

Specifications

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.

Features

• 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
• Long operation life, as it is not affected by empty pipe by avoiding overheating with heating above the process temperature and then cooling down to process temperature
• Lower system run cost due to low pressure drop with 10% insertion into the flow (e.g. 1/8" for 3/4" schedule 40 pipe)

Accessories

	Model Number	Description	Usually Ships*	Price	Order
	100571-00	Replacement set point magnet	Less Than 1 Week	$7.40	Order
	A-TEE-SS-1	1" NPT SS Tee	Less Than 1 Week	$45.50	Order
	A-TEE-SS-1-BSPT	1" BSPT SS Tee	Less Than 1 Week	$91.00	Order
	A-TEE-SS-1-1/2	1-1/2" NPT SS Tee	Less Than 1 Week	$60.50	Order
	A-TEE-SS-1-1/4	1-1/4" NPT SS Tee	Less Than 1 Week	$52.50	Order
	A-TEE-SS-1-1/4-BSPT	1-1/4" BSPT SS Tee	Less Than 1 Week	$105.00	Order
	A-TEE-SS-1/2	1/2" NPT SS Tee	Less Than 1 Week	$30.25	Order
	A-TEE-SS-1/2-BSPT	1/2" BSPT SS Tee	Less Than 1 Week	$76.00	Order
	A-TEE-SS-3/4	3/4" NPT SS Tee	Less Than 1 Week	$38.00	Order
	A-TEE-SS-3/4-BSPT	3/4" BSPT SS Tee	Less Than 1 Week	$76.00	Order
	A-WLDT-CS	1/2" NPT CS Weldolet for 2-10" pipe sizes	Less Than 1 Week	$45.50	Order
	A-WLDT-CS-BSPT	1/2" BSPT CS Weldolet for 2-10" pipe sizes	Less Than 1 Week	$45.50	Order
	A-WLDT-SS	1/2" NPT SS Weldolet for 2-10" pipe sizes	Less Than 1 Week	$60.50	Order
	A-WLDT-SS-BSPT	1/2" NPT SS Weldolet for 2-10" pipe sizes	Less Than 1 Week	$60.50	Order

Videos

Model Chart

TDFS2-X-X-X-OPT   TDFS THERMAL DISPERSION FLOW SWITCH

          1ST SYMBOL (1ST X) PIPE SIZE 
             1    1/2 TO 1-1/2" (15 TO 40 MM) PIPE SIZES     
             2    2 TO 10" (50 TO 250 MM) PIPE SIZES

          2ND SYMBOL (2ND X) ELECTRICAL CONNECTION
             C    1/2" FEMALE NPT WITH PVC CABLE FOR CONDUIT CONNECTION
             B    CABLE GLAND WITH BURIAL RATED CABLE                  
             P    CABLE GLAND WITH PVC JACKETED CABLE           

          3RD SYMBOL (3RD X) CABLE LENGTH
             ??      CABLE LENGTH IN FEET (INTEGER BETWEEN 01 AND 50)

          OPTIONS (OPT)               
             -BSPT   BSPT THREADS

Approvals

• CE Approval
• RoHS Letter of Compliance

Drawings

• Std Length 1/2 to 2" (15 to 40 mm) .pdf
• Std Length 1/2 to 2" (15 to 40 mm) .dwg
• Extended Length 2-1/2 to 10" (65 to 250 mm) .pdf
• Extended Length 2-1/2 to 10" (65 to 250 mm) .dwg

Product Reviews