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Dwyer TDS122 Thermal Dispersion Flow Switch

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Dwyer TDS122 Thermal Dispersion Flow Switch

Price 25000 INR/ Piece

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MOQ : 1 Piece

Dwyer TDS122 Thermal Dispersion Flow Switch Specification

Grade
Industrial Grade

Seal Material
Viton O-Rings

Thread
1 inch NPT male

Sensor Type
Thermal Dispersion

Display
LED Indication

Outer Size
Probe Length 2.2 inches (55 mm)

Material
316L Stainless Steel

Processing Type
Thermal Sensing

Diameter
Probe Diameter 8 mm

Mount Type
Insertion

Scale Range
Set Point Range: 0.1 to 3.0 fps (Water), 15 to 6500 sfpm (Air)

Accuracy
10% of Set Point

Finishing
Electropolished Stainless Steel

Measure Pressure Of
Not Applicable (Measures Flow)

Accessories
Mounting Accessories Included

Dwyer TDS122 Thermal Dispersion Flow Switch Trade Information

Minimum Order Quantity
1 Piece

Payment Terms
Cash on Delivery (COD), Letter of Credit (L/C), Paypal, Cash Against Delivery (CAD), Cheque, Cash Advance (CA)

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

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

Main Domestic Market
All India

About Dwyer TDS122 Thermal Dispersion Flow Switch

Dwyer TDS122 Thermal Dispersion Flow Switch

Adjustable Switch Point, LED IndicationThe Series TDS Thermal Dispersion Flow Switch offers solid state flow detection of non-coating liquids for pump and process protection. SPDT output allows for interfacing with remote PLC or relay control Device. The adjustable switch point is factory calibrated at 0.2 fps with LED indication of flow and calibration status. Units feature selectable NO or NC Operation and Are not damaged by over Ranging Flow Velocities.

Models & Ordering

Model	Description
TDS112	Thermal dispersion flow switch, PP/PPS wetted parts, 3.0" (7.6 cm) length.
TDS122	Thermal dispersion flow switch, PP/PPS wetted parts, 4.5" (11.4 cm) length.
TDS212	Thermal dispersion flow switch, PVDF wetted parts, 3.0" (7.6 cm) length.
TDS222	Thermal dispersion flow switch, PVDF wetted parts, 4.5" (11.4 cm) length.

Specifications

Service: Liquids.

Wetted Materials: Polypropylene/PPS or Polyvinylidene Fluoride.

Range: Range: 0.04 to 10 fps (1.2X10^-2 to 3.05 m/s)

Temperature Limits: 32 to 140F (0 to 60C).

Pressure Limits: 150 psi (10 bar) @ 77F (25C), derated @ 1.667 psi (.113 bar) per C above 25C.

Repeatability: 5% of setpoint.

Switch Type: SPDT.

Electrical Rating: 60 VAC/60 VDC @ 1 A.

Electrical Connections: 22 AWG 3-wire, 10 ft (3 m) length.

Process Connections: 3/4" male NPT.

Mounting Orientation: Any orientation, for pipe sizes 3/4" to 1-1/2" use 3.0" (7.6 cm) length switch; for 2" to 16" pipe sizes use 4.5" (11.4 cm) length switch.

Setpoint Adjustment: 0.04 to 3 fps (1.2X10^-2 to .91 m/s).

Setpoint Drift: 0.5% of setpoint.

Response Time: 1-10 seconds.

Viscosity Range: 1 to 200 centipoise.

Supply Voltage: 12 to 36 VDC.

Consumption: 50 mA (nominal).

Indication: LED for flow status.

Weight: 3 oz (94 g).

Agency Approvals: CE.

Ideal for Industrial Flow Monitoring

Designed for diverse industrial applications, the TDS122 Thermal Dispersion Flow Switch is compatible with both liquids and gases. Its durable 316L stainless steel sensor and IP66 enclosure ensure long-term performance, even in harsh environments. Accurate detection is provided across a set point range from 0.1 to 3.0 fps for water and 15 to 6500 sfpm for air. The switch operates within broad temperature and pressure limits, making it suitable for various processing activities.

Streamlined Installation and Operation

This flow switch simplifies installation with a standard 1-inch NPT male thread and comes with mounting accessories for quick setup. The 5-pin M12 connector allows for efficient electrical connections. LED indicators offer clear visual feedback, while the SPDT relay output supports easy integration into existing industrial control schemes. Its compact probe design minimizes intrusion into the pipeline while still delivering accurate readings.

FAQs of Dwyer TDS122 Thermal Dispersion Flow Switch:

Q: How does the Dwyer TDS122 Flow Switch detect flow in both liquids and gases?

A: The TDS122 uses a thermal dispersion sensor principle, measuring the cooling effect that flow has on a heated element, making it suitable for accurate flow detection in both liquids and gases.

Q: What process fluids are compatible with the TDS122 Flow Switch?

A: The flow switch is engineered for use with a wide range of liquids and gases, given its 316L stainless steel wetted parts and Viton O-rings, making it suitable for most industrial fluids that do not attack these materials.

Q: When should I use the Dwyer TDS122 for flow monitoring applications?

A: This flow switch is ideal when you require reliable detection of minimum or maximum flow conditions to safeguard equipment, automate process control, or trigger alarms in systems handling liquids or gases.

Q: Where can I install the TDS122 Flow Switch in my system?

A: It is designed for insertion into pipelines via a 1-inch NPT male thread. Thanks to its robust build and IP66 enclosure, it can be installed in demanding industrial environments, indoors or outdoors.

Q: What are the benefits of using the thermal dispersion type sensor in this flow switch?

A: Thermal dispersion sensors provide a non-moving-part solution, minimizing maintenance, resisting fouling, and ensuring reliable performance even in fluids prone to debris or particulates.

Q: How do I receive output signals from the TDS122 in my automation system?

A: The device includes an SPDT relay output rated at 1A @ 24VAC/DC, which can be connected to control panels, alarms, or PLCs via the 5-pin M12 connector for seamless integration.

Q: What is included with the flow switch, and what mounting accessories are provided?

A: Each unit is supplied with mounting accessories required for installation, including fittings compatible with 1-inch NPT threads, and features LED display for operation status feedback.

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