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ProMinentDEGermany

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.

MarketsSG · MY · ID

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
ApplicationsIndustrialCommercial
Technical overview

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

Accurate metering of viscous and gaseous media through movement-profile adjustment, per ProMinentDuties across a 21–1,040 l/h capacity range with one consistent control concept (S1Cb, S2Cb, S3Cb)Food-contact dosing where EU 1935/2004, FDA or Hygienic Design variants are specifiedPlants that need bus integration (PROFIBUS/PROFINET via DULCOnvert) and remote status signalling

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)
Product story

A closer look

Studio image of a ProMinent Sigma motor-driven diaphragm metering pump — dark-blue body with orange panels and a ProMinent Sigma label, an orange-and-blue removable operating unit with LCD, click wheel and STOP/START key standing above it, a white liquid end at the left, a black coiled cable and a clear cover over the lower connection area. A compact text block at the top-left carries the headline "Diaphragm" in cyan and the subtitle "Motor-driven metering pump · ProMinent Sigma X". The colours have not been checked against ProMinent's own photographs.
Close-up macro of the detachable orange-yellow electronic control head of a ProMinent Sigma X — blue-dark LCD display face with amber-orange surround, large orange click wheel in centre, navigation buttons and red STOP/START button visible, green and amber tri-LED status indicators at top, black coiled cable exiting the underside, navy-blue pump body softly visible in the background.
Technical cutaway cross-section illustration of a ProMinent Sigma motor-driven diaphragm metering pump — navy-blue housing with orange accents on the exterior half; internal cross-section reveals multi-layer diaphragm, eccentric drive linkage, inlet and outlet check-ball valves, and diaphragm backing plate with labelled components; cyan flow arrows trace suction and discharge stroke direction. A compact text block at the top-left carries the headline "Multi-layer diaphragm", with "Multi-layer" picked out in cyan, and the subtitle "Safety diaphragm · optical rupture indicator".
Macro studio photograph of a ProMinent Sigma X pump (navy body, orange-yellow motor and removable control unit with blank display, black knob, coiled cable) with its white plastic liquid end in the foreground and a text block at top-left reading: Liquid end; Sigma X S1Cb PVT version: PVDF head and connection, PTFE seals and ball seat, ceramic balls.
Dark studio image of a ProMinent Sigma X pump at right with a dark card at left reading: Sigma X control type, Capacity range by model; S1Cb 21–117 l/h; S2Cb 56–353 l/h; S3Cb 182–1,040 l/h, each with Minimum capacity at maximum back pressure; footer: Water at 20 °C. S2Cb page headline prints 61–353 l/h. Pump shown: S1Cb.
Illustration of a single ProMinent Sigma X pump on a grey plinth beside an unlabelled white chemical feed tank joined by clear tubing, in a plain utility room with pipework behind; text block at top-left reading: Pump with feed tank; Illustration · generic layout, not a Purionex-delivered installation.