
ProMinent Sigma X Motor-Driven Diaphragm Metering Pump
Motor-driven diaphragm metering pump with patented multi-layer safety diaphragm and removable LCD control unit — Sigma X S1Cb, S2Cb and S3Cb cover 21–1,040 L/h.
Key specifications
Sigma X S1Cb (Control type)
- Flow rate
- 21–117 l/h (minimum capacity at maximum back pressure)
- Pressure
- 4–12 bar
- Power supply
- 1-phase, 100–230 V ±10 % / 240 V ±6 %, 50/60 Hz, 110 W
- IP rating
- IP 65
- Stroke length
- 4 mm
- Control
- Removable operating unit with click wheel; 0/4–20 mA standard signal; integral PROFIBUS (PROFINET via ProMinent DULCOnvert converter)
Sigma X S2Cb (Control type)
- Flow rate
- 56–353 l/h (capacity table; page headline 61–353; minimum capacity at maximum back pressure)
- Pressure
- 4–16 bar
- Power supply
- 1-phase, 100–230 V ±10 % / 240 V ±6 %, 50/60 Hz, 220 W
- IP rating
- IP 65
- Stroke length
- 5 mm
- Control
- Removable LCD unit, click wheel
Sigma X S3Cb (Control type)
- Flow rate
- 182–1,040 l/h (minimum capacity at maximum back pressure)
- Pressure
- 4–12 bar
- Power supply
- 1-phase, 100–230 V ±10 % / 240 V ±6 %, 50/60 Hz, 420 W
- IP rating
- IP 65
- Stroke length
- 6 mm
- Control
- Removable LCD unit, click wheel
Motor-Driven Diaphragm Dosing — Sigma X Control Type
The Sigma X diaphragm metering pump covers a capacity range of 21 to 1,040 l/h in versions S1Cb, S2Cb and S3Cb. Its patented multi-layer safety diaphragm is combined with an integral frequency converter with microprocessor control that protects the power end from overloading. A removable operating unit with click wheel, four operating keys and an illuminated LCD handles set-up, and capacity is adjusted through a combination of frequency and stroke length adjustment.
Control & safety
- Drive
- Integral frequency converter with microprocessor control; protects the power end from overloading
- Timer
- Built-in timer, standard, controls time-dependent metering cycles
- Logbook
- Integral logbook stores up to 300 events; relevant spare parts can be shown in the display
- Relief valve
- Integrated relief valve with bleed option (S1Cb page)
- Operating unit
- Removable; click wheel and 4 additional operating keys; large illuminated LCD
- Status display
- 3-LED display for operating, warning and error messages, visible from all sides
- Overload shut-down
- Integrated in the pump control (S2Cb page)
- Diaphragm signalling
- Patented multi-layer safety diaphragm with optical signalling (S2Cb page)
Signals & connectivity
- Analog input
- Programmable 4–20 mA (S1Cb); 0/4–20 mA standard signal (S2Cb)
- Status output
- Operating statuses transmitted remotely via an additional output or relay module (S1Cb page)
- Bus connection
- Connectable to various bus systems; PROFIBUS/PROFINET via ProMinent DULCOnvert (S1Cb, S3Cb)
- Batch operation
- Max. 99,999 strokes per start pulse (S1Cb, S3Cb)
- Contact control
- Potential-free contacts, 99:1 to 1:99 factor (S1Cb, S3Cb); pulse step-up/step-down and batch mode (S2Cb)
Wetted-material variants & stroke rate
- PVT variant
- PVDF
- SSH variant
- Stainless steel 1.4435, hygienic design (S1Cb page)
- SST variant
- Stainless steel 1.4404/1.4571
- Compliance variants
- EU 1935/2004 and FDA variants available; Hygienic Design versions available
- S1Cb max stroke rate
- 90–200 strokes/min (varies by model)
- S3Cb max stroke rate
- 180 strokes/min
Best for
Key product advantages
- Patented multi-layer safety diaphragm for process reliability
- Precision better than ±1% under correct conditions (ProMinent web pages); ProMinent's manuals state ±2% reproducibility when installed correctly, under constant conditions, at least 30% stroke length and water at 20 °C
- Large adjustment range from combined frequency and stroke length adjustment
- Removable operating unit with click wheel, illuminated LCD and 3-LED status display visible from all sides
- Integral logbook stores up to 300 events for process management and troubleshooting
- EU 1935/2004, FDA and Hygienic Design variants available (variant-specific)
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