The Barton Instruments 291B is a differential pressure indicating switch designed for precise monitoring and control applications. This unit features a differential pressure range of 0-10 IN WC with a corresponding scale range of 0-10 Inches of Water displayed in a high-contrast black scale color with white markings. Engineered for demanding environments, both the pressure housing and bellows are constructed from durable 316SS, complemented by a bellows fill fluid designated as "M". It offers a safe working pressure of up to 3000 PSI and is equipped with 1/2" top by 1/4" bottom FNPT process connections. The switch includes a single low SPDT configuration and is built for 2" pipe mounting. This robust instrument delivers reliable performance and accurate local reading alongside switching capability for industrial systems.
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| Manufacturer | Barton Instruments |
|---|---|
| Country | |
| Part number | 291B |
| Inner Code | 100339 |
| Product type | Differential Pressure Indicating Switch |
|---|---|
| Differential Pressure Range | 0-10 IN WC |
| Pressure Housing Material | 316SS |
| Bellows Material | 316SS |
| Safe Working Pressure | 3000 PSI |
| Process Connections | 1/2" top x 1/4" bottom FNPT |
| Scale Range | 0-10 Inches of Water |
| Scale Color | Black w/ White Markings |
| Bellows Fill Fluid | M |
| Mounting | 2" Pipe Mount |
| Switch Type | Single Low SPDT |