Series TDS Thermal Dispersion Flow Switch

Adjustable Switch Point, LED Indication

The 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

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

Model Description Usually Ships* Price Code Order
TDS112
Ships: Same Day
Price: $246.00
Thermal dispersion flow switch, PP/PPS wetted parts, 3.0" (7.6 cm) length. Same Day* $246.00 N Order
TDS122
Ships: 3-4 Weeks
Price: $259.00
Thermal dispersion flow switch, PP/PPS wetted parts, 4.5" (11.4 cm) length. 3-4 Weeks* $259.00 N Order
TDS212
Ships: 3-4 Weeks
Price: $392.00
Thermal dispersion flow switch, PVDF wetted parts, 3.0" (7.6 cm) length. 3-4 Weeks* $392.00 N Order
TDS222
Ships: 3-4 Weeks
Price: $346.00
Thermal dispersion flow switch, PVDF wetted parts, 4.5" (11.4 cm) length. 3-4 Weeks* $346.00 N Order

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 140°F (0 to 60°C).
Pressure Limits:
150 psi (10 bar) @ 77°F (25°C), derated @ 1.667 psi (.113 bar) per °C above 25°C.
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.

Product Literature

Manuals

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