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Series TDFS Thermal Dispersion Flow Switch

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Series TDFS Thermal Dispersion Flow Switch

Price 25000 INR/ Piece

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MOQ : 1 Piece

Series TDFS Thermal Dispersion Flow Switch Specification

Outer Size
Approx. 160 mm Length

Grade
Industrial Grade

Thread
1 NPT Male

Display
LED Status Indicator

Seal Material
Viton

Sensor Type
Thermal Dispersion Sensor

Material
316 Stainless Steel

Processing Type
Factory Calibrated

Diameter
Probe: 12 mm

Mount Type
Insertion Type

Scale Range
0.03 to 3 m/s (Water), 0.15 to 30 m/s (Air)

Accuracy
2% of Set Point

Finishing
Epoxy-Coated

Measure Pressure Of
Liquid & Air Flow

Accessories
User Manual, Mounting Accessories

Series TDFS Thermal Dispersion Flow Switch Trade Information

Minimum Order Quantity
1 Piece

Payment Terms
Cash on Delivery (COD), Paypal, Cash Against Delivery (CAD), Cash in Advance (CID), Cheque, Cash Advance (CA)

Sample Policy
Sample costs shipping and taxes has to be paid by the buyer

Main Export Market(s)
Western Europe, Australia, North America, South America, Eastern Europe, Middle East, Central America, Asia, Africa

Main Domestic Market
All India

About Series TDFS Thermal Dispersion Flow Switch

Series TDFS Thermal Dispersion Flow Switch

OLD Modal TDFS-1-P-06
NEW Modal TDFS-2-P-06

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 field adjustable and the unit has both NO and NC NPN outputs. See Figure 1 on catalog page for output and LED actions on change of flow

Product Applications

Boiler Flow Proving

Hot Water Heaters

Chillers

Liquid Transfer Systems

Model - TDFS2-1-P-06

Description - Thermal Dispersion Flow Switch, 316SS, 1/2" NPT Process Connection, 6' of Cable With Cable Gland.
Specifications

Service: Compatible water-based fluids.
Wetted Materials: 316 SS, Polysulfone, and FKM.
Setpoint Range: 0.5 to 10 ft/s (0.15 to 3.0 m/s).
Repeatability: 0.07 ft/s +3% of setpoint.
Typical Deadband: 0.1 ft/s +15% of setpoint.
Temperature Limits: Process: 5 to 185^oF (-15 to 85^oC) (non-freezing); Ambient: 5 to 167^oF (-15 to 75^oC), Storage: -40 to 185^oF (-40 to 85^oC).
Pressure Limits: 300 psig (20.67 bar).
Response Time: Approximately 8 s.
Power Requirement: 9 to 24 VDC.
Switching Current: 400 mA, derate 5 mA/^oC above 23^oC.
Current Consumption: Average:93 mA, Peak: 300 mA.
Electrical Connection: 4 conductor 22 AWG, 6' (1.83 m) long with cable gland.
Process Connection: 1/2" NPT male.
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.

Reliable Flow Monitoring for Industrial Applications

The TDFS Thermal Dispersion Flow Switch is engineered for challenging industrial environments, featuring an epoxy-coated 316L stainless steel probe and Viton seals for maximum resistance to corrosion and chemicals. Its versatility allows for accurate monitoring of both water and air flows, making it suitable for applications in pumps, HVAC, lubrication, and cooling lines. The switchs quick installation, robust build, and low maintenance requirements make it ideal for continuous operation.

User-Friendly Features and Flexible Installation

A bright green/red LED provides immediate visual feedback for flow or no-flow states, reducing troubleshooting time and increasing safety. The switch supports a broad power supply range (19 to 253 VAC/DC), integrates seamlessly with various control systems, and features an ergonomic M12 plug connection for straightforward installation. Factory calibration and included mounting accessories ensure a hassle-free setup and reliable performance from day one.

FAQs of Series TDFS Thermal Dispersion Flow Switch:

Q: How does the Series TDFS Flow Switch operate in industrial flow detection?

A: The Series TDFS uses thermal dispersion sensor technology to detect the presence or absence of liquid or air flow. When flow is detected within the set parameters, it activates its SPDT relay output and the LED indicator changes to signal the flow state. This enables quick response in process control and protection of equipment.

Q: What installation process should be followed for optimal performance?

A: The switch is designed for insertion type mounting, using its 1 NPT male thread. Simply insert the probe (12 mm diameter) into the pipeline at the desired monitoring point, ensuring correct orientation using the user manual and supplied mounting accessories. The M12, 4-pin plug allows for secure electrical connection.

Q: When should I use this flow switch for my application?

A: It is ideal for continuous or critical applications requiring reliable flow monitoring and protection, such as in pumps, cooling circuits, lubrication systems, and HVAC setups. Its broad operating temperature and environmental resistance make it suitable for harsh or variable industrial conditions.

Q: Where can the Series TDFS be installed?

A: This flow switch is intended for industrial settings involving process automation or equipment protection, such as manufacturing lines, mechanical rooms, chiller plants, or any closed-circuit fluid or air system that fits the probe and threading specification.

Q: What are the key benefits of using this flow switch?

A: Users benefit from high accuracy (2% of set point), fast 1-second response time, and excellent repeatability (1%), making it reliable for safety or process control. Its IP65 rating, robust stainless steel and Viton construction, and shock/vibration resistance ensure longevity and confidence in demanding environments.

Q: How does the LED status indication function?

A: The switch provides a clear LED visual cuegreen for flow and red for no flowallowing operators to quickly verify system status at a glance. This built-in indicator streamlines maintenance and operational checks.

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