Type B1S/B2S Bourdon Tube Pressure Switches is a mechanical single/dual pressure switch with an accuracy of ±1.0%. It is used in pump control, die-casting machines, press control, power plants, and alarm functions.
This document provides technical data for the Barksdale Type B1S/B2S Bourdon tube pressure switches. These are mechanical single or dual pressure switches designed for direct acting operation with no friction and high accuracy. The switches feature all-welded wetted parts made of Stainless steel 1.4401 and offer a repeatability of +1.0% at constant temperature.
| Repeatability | +1.0 % at constant temperature |
|---|---|
| Adjustment ranges | 4.8 ... 950 bar |
| Wetted parts material | Stainless steel 1.4401 |
| Temperature range | -40 °C... +75 °C |
| Protection class | IPOO |
| Switching rate | max. 20/min |
| Process connection | 1/4" NPT female thread |
| Weight B1s | approx. 0.6 kg |
| Weight B2s | approx. 0.7 kg |
The maximum operating pressure depends on the specific pressure range code, with the highest listed at 950 bar for the 180SS* type.
Yes, the switches are designed for intrinsically safe applications, provided the order details include "Exi" and ratings do not exceed Umax = 28 V and Imax = 50 mA.
To decrease the set point, turn the adjustment screw clockwise.