USM-FS21TS Reed Magnetic Flow Switch SUS304 – 1/2″ NPT or BSPP, Normally Open, 1.5-12 L/min
Price range: $51.99 through $54.99
In-line magnetic reed flow switch with SUS304 body and 1/2″ thread (NPT or BSPP). Normally open contact closes from 1.5 L/min; up to 12 L/min at 0.1 MPa. 10 W, max 0.3 A switching.
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Technical specification sheet · automationbotx.com
| SKU | ABX-AE-645652 |
|---|---|
| Manufacturer part number | USM-FS21TS |
| Thread (options) | 1/2" BSPP · 1/2" NPT |
| Choose the 1/2" thread standard | NPT or BSPP. The contact is normally open and closes when flow reaches about 1.5 L/min. |
| Model | USM-FS21TS |
| Body material | SUS304 stainless steel |
| Connection | 1/2" NPT or 1/2" BSPP |
| Contact type | Normally open (reed) |
| Start flow | 1.5 L/min |
| Maximum flow | 12 L/min (at 0.1 MPa) |
| Switching power | 10 W |
| Max switching voltage | 200 VDC |
| Max switching current | 0.3 A |
| Working temperature | 0 to 60 °C |
Data as published in this listing by the manufacturer or supplier. Price, stock and shipping are shown above.
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Description
The USM-FS21TS is an in-line flow switch with a SUS304 stainless steel body. A magnetic float moves with the flow and actuates a sealed reed contact, giving a dry contact signal for pump protection, cooling-water monitoring and low-flow alarms on small water lines.
Choose the 1/2″ thread standard: NPT or BSPP. The contact is normally open and closes when flow reaches about 1.5 L/min.
Installation notes from the supplier: the reed contact is low power (10 W, 0.3 A max). Use an interposing relay for higher loads or mains circuits. Install a strainer upstream so particles do not jam the float, and avoid strong magnetic fields, vibration and shock.
Specifications (as listed by the supplier)
- Model: USM-FS21TS
- Body material: SUS304 stainless steel
- Connection: 1/2″ NPT or 1/2″ BSPP
- Contact type: Normally open (reed)
- Start flow: 1.5 L/min
- Maximum flow: 12 L/min (at 0.1 MPa)
- Switching power: 10 W
- Max switching voltage: 200 VDC
- Max switching current: 0.3 A
- Working temperature: 0 to 60 °C
Additional information
| Thread | 1/2" BSPP, 1/2" NPT |
|---|
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