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DWYER TDFS2 thermal dispersion flow switch

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.

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Made in USA. brand DWYER, model TDFS2

Fast delivery to Latvia, Estonia and Lithuania. International delivery to Europe, Asia, Africa and other continents available on request
Our warehouse is located in Riga, Latvia.

Retailprice from $325,95

Available

Available

Founded in 1931, DWYER manufactures equipment for measurement, conversion and control – pressure, temperature, level, flow.

Advantages

Official distributor in Latvia

Time-tested American, European and Asian brands of control and measurent instruments

Advantages

Special price list for organisations

We offer a significant discount for trade organisations and manufacturing companies

Advantages

Worldwide shipping on request

We take care of all logistics and customs clearance. Fast delivery to Baltic countries

Advantages

After-sales service and support

Warranty service and repair, expert assistance in the operation of the instruments

Description of DWYER TDFS2

PRODUCT APPLICATIONS

  • Boiler flow proving
  • Hot water heaters
  • Chillers
  • Liquid transfer systems

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)

Technical specifications of DWYER TDFS2

  • 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.
  • Compliance: CE.

How to buy DWYER TDFS2

Model Description Price
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)
$325.95
TDFS2-2-C-06 Thermal dispersion flow switch for pipe size 2 to 10″ (50 to 250 mm), 316SS, 1/2″ NPT process connection, 6′ of cable with conduit connection. (Extended length)
$555.80
TDFS2-2-P-06-BSPT Thermal dispersion flow switch for pipe size 2 to 10″ (50 to 250 mm), 316SS, 1/2″ BSPT process connection, 6′ of cable with conduit connection. (Extended length)
$555.80

Accessories for DWYER TDFS2

Model Description Price
A-WLDT-SS 1/2″ NPT SS Weldolet for 2-10″ pipe sizes
$62.45
A-WLDT-CS 1/2″ NPT CS Weldolet for 2-10″ pipe sizes
$47.30
A-WLDT-SS-BSPT 1/2″ NPT SS Weldolet for 2-10″ pipe sizes
$62.90
A-WLDT-CS-BSPT 1/2″ BSPT CS Weldolet for 2-10″ pipe sizes
$47.30
A-TEE-SS-1/2 1/2″ NPT SS Tee
$31.80
A-TEE-SS-3/4 3/4″ NPT SS Tee
$39.20
A-TEE-SS-1 1″ NPT SS Tee
$47.30
A-TEE-SS-1-1/4 1-1/4″ NPT SS Tee
$54.60
A-TEE-SS-1-1/2 1-1/2″ NPT SS Tee
$62.90
A-TEE-SS-1/2-BSPT 1/2″ BSPT SS Tee
$79.05
A-TEE-SS-3/4-BSPT 3/4″ BSPT SS Tee
$79.05
A-TEE-SS-1-BSPT 1″ BSPT SS Tee
$94.65
A-TEE-SS-1-1/4-BSPT 1-1/4″ BSPT SS Tee
$109.20
100571-00 Replacement set point magnet
$8.00

Model Chart DWYER TDFS2

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

User Guide and Instruction manual for DWYER TDFS2

You can request the necessary certificates, documentation, instructions and user guide for DWYER TDFS2 using the special form.

You can buy DWYER TDFS2 in Latvia at a price starting from325,95 $ in «OLIL SIA» by leaving a request on the website, by phone +371 672 70580 or by email . DWYER TDFS2 price are subject to change depending on exchange rates. We deliver instruments by transport companies in Latvia, Estonia and Lithuania. Worldwide shipping to Europe, Asia, Africa, North and South America available on request.