Motor-driven pumps

1
Motor-driven pumps

• Sigma/ 1
• Sigma/ 2
• Sigma/ 3

2
Control Type Features

• Stroke length adjustment from 0 - 100
• Digitally accurate stroking rate via keypad
• LC display
• Two-stage level switch input
• Flow monitor input
• External control via Pulse Control
• External control via 0/4-20mA signal

3
New Features Control Type

• Extended control options, e.g. free
  combination of mA/frequency ratio
• Real stroke length measurement
• Easy pump calibration
• Direct setting gph or lph
• Warning when leaving the calibrated range (/-
  10)
• New relay types
• Warning, switch-off, power
• Analog output for capacity
• Timer program design software
• Profibus DP
• Programmable via PC

4
Display

• Large illuminated LC display
• Quick change of display informatione.g. gph or
  stroke frequency
• Display of stroke length in
• Optical indication of operation status (3 LEDs)

5
Modular Design

• Removable power cord
• Retrofit relays
• Warning
• Switch-off
• Power
• Fault indicating relay
• Pacing relay
• Relay combinations
• Fault indication pacing
• Switch-off pacing
• Diaphragm failure detector

6
Speed Control

• Microprocessor controller with
• an optimum combination of speed control and
  Stop/Go operation
• offers an extensive control range with selective
  fine tuning

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Three performance ranges
Three performance ranges one unified technical
concept based on the economical modular principle
Sigma/ 1 from 5 to 32 gph, Sigma/ 2 from 15 to
111 gph, Sigma/ 3 from 45 to 264 gph.
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THREEFOLD SIMPLICITY
The overlapping pump performance ranges cover an
extraordinarily wide spectrum.

• The modular principle
• Many of the components employed in the Sigma
  range are identical and can be used throughout
  the series
• simplified spare parts management
• less stockholding

• Identical operating systems for all three pumps
  in the Sigma series
• less training of users
• less danger of misuse
• more effective and safer function monitoring

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Sigma/ 1
Base can be turned90
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Proven precision

• Microprocessor control
• optimum combination of speed control and
  digital stroking frequency.
• easy-to-use operating menu
• Display of all functions via the back-lit LCD
  display.

11
Sigma Control VersionIntegrated operation panel
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Dual DEVELOPAN diaphragm with sensor
Maximum safety the dual DEVELOPAN diaphragm
with sensor in the inter-diaphragm cavity
guarantees effective protection even in the event
of a diaphragm rupture. Continous working with
safety diaphragm No process interruption
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Design and functionDrive
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Sigma pumps control typesmultiple easy external
control
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Sigma Control Version - integrated frequency
inverterfeedback signal from stroke sensor
Control of thestroke number
Contact signalsmA signals
Internal Control
1 stroke is performed with the same speed as
with a frequency of 60 strokes / min.1
stroke/s, i.e. the stroke volume stay constant
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Sigma Control VersionControl of the stroke number

• Pump with integrated stroke sensor
• Stroke sensor gives a feedback signal for
  every sucessfully performed stroke
• The real speed is equal to the control signal
  and the theoretically calculated stroke number
• Speed Desired stroke number Desired volume
• The frequency is varied under load until the
  stroking rate equals to the theoretically
  calculated value

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Sigma with professional PROFIBUS-DP functionality
Minimum installation costs maximum operating
safety
Sigmas PROFIBUS interface enables full
integration of meteringtechnology into a
PROFIBUS processor control system.
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Profibus DP