Model 3100P
The Model 3100P and 3100P1 are pneumatic, float-operated switches for liquid level control. The 3100P is a 2-way normally-open or normally-closed pneumatic switch, and the 3100P1 is a 3-way pneumatic block-and-bleed switch. The 3100P and 3100P1 are rated for high pressure applications, and the polystyrene float will effectively and consistently operate the switch at specific gravities as low as 0.50. Both models can be mounted directly onto the vessel nozzle or into an external float chamber.
Model 3100E
The Model 3100E is an electric float-operated switch which can be used as a high or low level alarm or for liquid level control. The 3100E is rated for high pressure applications, and the polystyrene float will effectively and consistently operate the switch at specific gravities as low as 0.50. The switch can be mounted directly onto the vessel nozzle or into an external float chamber.
Model 3150
The Model 3150 is a simple pneumatic level control device designed for low pressure applications. Available with either 2" NPT or 4" Union vessel connection, the Model 3150 is designed with dew moving parts to provide consistent, dependable service.
Model 3900
The Model 3900 Liquid Level Switch is a pneumatic snap acting or electric SPDT or DPDT high/low level switch. This rugged instrument applies the same "force balance" control mechanism as the Model 3200 Liquid Level Controller, combined with a compact vertical cage assembly. The Model 3900 is designed specifically to meet the level control requirements found on onshore and offshore oil and gas production equipment.
