Get your Special Pricing!

Web Price:

$346.80

Availability: This product is currently available to purchase

Orders over $999 ship FREE*

*Free shipping applies within the continental US and weighing less than 50 lbs. Shipping and Returns Terms

Ship to Estimates

Are you from Chicago?

Yes / No

This item ships to

Change

Cancel

*shipping cost are estimated until you complete your order

The product is not cancelable or returnable unless found defective

Speak With a Technical Expert

Hours: 9am - 5pm CDT M-F

Call (847) 773-0645 Email Technical Expert

Documents: TDFS2-1-P-06

Instruction Manual Series TDFS2 Catalog Page TDFS2 More Info

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) | Dwyer

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)

Brand: DwyerSKU: TDFS2-1-P-06

The photo is for representation purposes only and may not be a photo of product being purchased.

Search products similar to TDFS2-1-P-06

Jump to: Overview & Specifications Reviews

Overview Details for TDFS2-1-P-06

See catalog product page for full listing

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)

Series TDFS2 Thermal Dispersion Flow Switch

Non-Mechanical, Low Pressure Drop, Large Pipe Sizes

The Series TDFS2 Thermal Dispersion Flow Switch is a thermal flow switchthat indicates whether the flow rate is above or below a user set flow rate. The unitincorporates two LED status indicators providing visual switch indication. The set flowrate (setpoint) is easily field adjustable with included magnet and the unit has both NOand NC NPN outputs.

Product Applications

Boiler flow proving
Hot water heaters
Chillers
Liquid transfer systems

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)

Specifications

Series: TDFS2 Thermal Dispersion Flow Switch
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.