ProMinent Sigma/1 ProMinent® Sigma/1 : Basic and Control Versions

ProMinent® Sigma/1  Pumps

ProMinent® Sigma/1 Basic pump

Durable design and simple operation
The choice for simple, metering pump applications. The ProMinent® Sigma/1 Basic pumps may be operated manually by adjusting the stroke length knob (displacement per stroke) at a constant stroke frequency using a constant speed motor. Automatic control of displacement per stroke via analog (4-20mA) signal is possible with optional motorized stroke positioning systems.

The ProMinent® Sigma/1 Basic is a mechanically-actuated diaphragm metering pump capable of flow rates from 5.2 to 38 gph (20 to 144 L/h) and pressures up to 174 PSI (12 bar).

Applications

  • Proportional chemical addition in water treatment (e.g. Sodium Hypochlorite for drinking water disinfection)
  • Measurement-dependent chemical addition (e.g. acid and caustic metering for pH neutralization in waste water treatment)
  • Chemical addition of aqueous chemicals for boilers and cooling towers
  • Higher chemical feed dosages up to 38 gph

 

Features and benefits

  • Mechanically-actuated diaphragm metering pump
  • PVDF and stainless steel
  • Drive unit is adjustable at 90º angles to the base
  • Three drive versions available
  • Manual stroke length adjustment or optional positioning motor
  • Rugged metal inner casing for components, with a corrosion-resistant housing
  • Reproducible metering accuracy at defined conditions and correct installation better than ±2% (stroke length area 30-100 %)

 

Sigma/ 1 basic motors
The Sigma/1 microprocessor controlled metering pump (S1Ca) is supplied with an integral TEFC motor. The Sigma basic version (S1Ba) is suitable for simple metering pump applications. The pump may be operated manually by adjusting the stroke length knob (displacement per stroke). Automatic control of displacement per stroke via a 4-20 mA analog signal is possible with an optional servomotor.

Sigma/1 Metering Pumps are also available in microprocessor based control versions.

ProMinent® Sigma/1 control

New Technology, Durable Design
ProMinent® Sigma/1 microprocessor controlled metering pumps are programmable and display informative data for monitoring, recording, and tracking. Functions include digital setting of stroke frequency, digital stroke length adjustment, integral variable speed and access codes. Displays include flow rate (gph or l/h) and totalized flow (gallons or liters), cumulative stroke count, and stroke length adjustment. Options include remote monitoring, diagnostics, control (via fieldbus, analog, pulse and/or timer), access codes, fault/pacing relays, mA analog output, and flow monitoring. Control version pumps are supplied with an intergral TEFC motor.

The ProMinent® Sigma/1 Control is a mechanically-actuated diaphragm metering pump capable of flow rates from 5.2 to 31.7 gph (20 to 120 L/h) and pressures up to 174 PSI (12 bar).

Features and benefits

  • Universally compatible PVDF liquid ends
  • Drive unit is adjustable at 90º angles to the base
  • Microprocessor control: optimum combination of variable AC frequency combined with digital stroking frequency, ensures exact metering even in the lower minimum range due to individual stroke control
  • Simple adjustment of pump functions via panel programming keys
  • A large backlit LCD indicates the current operating status
  • 3-LED-function as operation indicators, alarm indicator and fault indicator
  • Problem-free connection to complex process control systems with PROFIBUS®-DP interface.
  • Control via contact or analog signals (e.g. 0/4-20 mA)
  • On demand, integration of 2-week-process timer

 

Applications

  • Proportional chemical addition in water treatment (e.g. Sodium Hypochlorite for drinking water disinfection)
  • Measurement-dependent chemical addition (e.g. acid and caustic metering for pH neutralization in wastewater treatment)
  • Time-controlled chemical addition in cooling water circuits
  • Pulse-controlled metering from variable flow meters.

 

Sigma/ 1 control motors
The Sigma/1 microprocessor controlled metering pump (S1Ca) is supplied with an integral TEFC motor. The Sigma basic version (S1Ba) is suitable for simple metering pump applications. The pump may be operated manually by adjusting the stroke length knob (displacement per stroke). Automatic control of displacement per stroke via a 4-20 mA analog signal is possible with an optional servomotor. See identity code for motor options.

Optional servomotor available for automatic control of displacement per stroke (via a 4-20 mA analog signal).

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