Easy-access, back-mounted unit that provides liquid level or interface control for gas separator and scrubber applications. Series EVS controllers feature patented Envirosave™ snap (on/off) pilots, which prevent fugitive emissions and reduce bleeding of valuable gases.

• Back-mount design with flush-mount internals simplifies installation and inspection
• Envirosave pilot rated at zero leakage in U.S. EPA Natural Gas STAR Program report (contact Norriseal for details)
• Uses Norriseal’s force-balance technology, for proven reliability and long service life
• High sensitivity for either Top Level or Interface control
• Weather-resistant sealed enclosure
• Complies with NACE MR0175-2002

Reliable and economical pneumatic liquid level controllers with no-bleed, forced-balanced operation. Available with patented Envirosave snap pilot to prevent fugitive emissions and reduce bleeding of valuable gases.

• Snap (On/Off) or throttle (proportional) control
• Right- or left-hand mount
• Field-configurable direct or reverse action
• Removable door
• Various arm lengths, displacer sizes, diameters, connections and body materials
• Options include SPDT or DPDT electric switches
  

Optional Configurations

Series 1001A Weatherproof Liquid Level Controller

Features a weatherproof case/cover with a secure lever latch to protect internals. Options include marine service and SPDT or DPDT electric switches.

Series 1001 XL

Designed with a back-mount connection.

Pneumatic, non-indicating level controller/transmitter used with a Series 1406 torque tube level sensor. Provides throttle control with torque tube accuracy.

• Pneumatic control ranges:
  5% to 100% proportional band for modulating
  5% to 75% snap range for differential gap or adjustable On/Off control
• Available in both controller and transmitter
• Internal 3-to-1 relay maximizes control output
• Click-type friction lock nozzle allows accurate set in vibration service
• 3 t o 15 psig, 3 t o 27 psig and 6 t o 30 psig control signal ranges
  

Pneumatic, indicating level controller/transmitter used with a Series 1406 torque tube level sensor.

• Dial-in set point
• 15% to 200% adjustable throttling control
• Automatic reset and/or rate action
• 3 t o 15 psig, 3 t o 27 psig and 6 t o 30 psig control signal ranges or adjustable differential gap action