Sigma/ 3 Diaphragm Metering Pump

Together with Sigma/ 1 and Sigma/ 2, Sigma/ 3 Motor Diaphragm Metering Pumps compose a continuous product line, covering the capacity ranges from 17 to 1.030 l/h at uniform operation conception, control conception and spare parts management. All three pumps are available as Basic types with no internal electronic control systems or as microprocessor versions for rapid and reliable adjustment to fluctuating dosing tasks.

Advantages

Process safety: In case of average, dosing medium does not escape to the environment or into the pump gear, thanks to multi-layer safety diaphragm with diaphragm rupture display or signaling.
Ventilation option provides functional reliability.
Protection of the pump against overload with integrated relief valve.
High process quality: reproducible dosing accuracy better than ±2 %
Easy handling: direct adjustment and control of dosing capacity in plain language via the big illuminated LC display (Control Version)
Problem-free connection to complex process control systems with optional equipment with PROFIBUS®-DP or CanOpen interface (Control Version)
Simplified spare parts management and decreased stock handling efforts at same availability of pumps within the Sigma product line.
Less training efforts for operating staff when handling the Sigma product line, thanks to same operation modus.

Application Areas

Quantity-proportional chemical addition in water treatment, e.g. Sodium Hypochlorite for drinking water disinfection.
Measurement-dependent chemical addition, e.g. acid and brine dosing for pH neutralization in waste water treatment
Pulse-controlled dosing when bottling different volumina.

Features

Capacity range 145 - 1.030 l/h, 4 - 12 bar
High-strength inner housing for energy-stressed components as well as additional polymer housing as protection against corrosion.
Stroke length: 6 mm, adjustable via self-arresting adjusting knob in 0.5 % steps.
Multi-layer safety diaphragm with diaphragm rupture display as standard, i.e. even should the diaphragm rupture the feed chemical cannot escape from the pump unchecked or penetrate the pump drive.
Liquid end materials: PVDF, stainless steel 1.4404
Reproducible dosing accuracy at defined conditions and correct installation better than ±2 % (stroke length area 30-100 %).
Integrated hydraulic relief valve: protection of the pump against overload without complex extra installations and costs as well as problem-free bleeding of metering pump during suction process.

Features Basic type (S3Ba)

Borad selection of drive versions: three-phase norm motor, single-phase alternating current motor, motors for the use in EXe and EXde areas, various flange versions for the use of customer-specific motors.
Protection class IP 55 (optionally ATEX-T3/T4)
Stroke-length adjustment: manually (optionally with stroke positioning drive or with stroke control drive)

Features Control Version (S3Ca)

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.
The individual pump functions are simply adjusted using the five programming keys.
Big backlit LC Display
Indication in plain language of metering capacity in l/h or US-gal/h
3-LED-function as operation indicator, alarm indicator and fault indicator
Control via contact or analogue signals (e.g. 0/4-20 mA)
On demand, integration of 2-week-process timer. The intelligent alternative to clock timers.
Protection class IP 65
Interface for PROFIBUS®-DP or CanOpen

Technical Data

	at 50			at 60 Hz
Type S3Ba / S3Ca	bar	l/h	strokes/min.	psi	l/h/gph	strokes/min.	suction lift mWS	connector dimensions G-DN
120145 PVT	10	145	72	145	174/46	86	5	1½-25
120145 SST	12	145	72	174	174/46	86	5	1½-25
120190 PVT	10	190	103	145	228/60,2	124	5	1½-25
120190 SST	12	190	103	174	228/60,2	124	5	1½-25
120270 PVT	10	270	144	145	324/85,6	173	5	1½-25
120270 SST	12	270	144	174	324/85,6	173	5	1½-25
120330 PVT	10	330	180	145	-	-	5	1½-25
120330 SST	12	330	180	174	-	-	5	1½-25
070410PVT	7	410	72	100	492/130	86	4	2-32
070410 SST	7	410	72	100	492/130	86	4	2-32
070580 PVT	7	580	103	100	696/183,9	124	4	2-32
070580 SST	7	580	103	100	696/183,9	124	4	2-32
040830 PVT	4	830	144	58	1000/264	173	3	2-32
040830 SST	4	830	144	58	1000/264	173	3	2-32
041030 PVT	4	1030	180	58	-	-	3	2-32
041030 SST	4	1030	180	58	-	-	3	2-32

For the Sigma control types, the 60 Hz performance data apply (because internal 60 Hz operation), however, at max. 200 strokes/min.

Materials in Contact with Chemicals at Liquid End Version

Material	Liquid End	Suction/Discharge Connector	Seals	Balls (DN 25)	Panel/ Spring (DN 32)	Integrated Pressure Relief Valve
PVT	PVDF (Polyvinylidene- fluoride)	PVDF (Polyvinylidene- fluorid)	PTFE	Glass	Ceramic/ Hast.C + CTFE	PVDF/FPM* or EPDM
SST	Stainless Steel 1.4404	Stainless Steel 1.4404	PTFE	Stainless Steel	Ceramic 1.4404/ Hast.C	Stainless Steel/FPM* or EPDM