Sigma/ 2 Plunger Metering Pump

The Sigma/ 2 motor plunger metering pump with the solenoid diaphragm metering pumps type Sigma/1, Sigma/2 and Sigma/ 3 make up a universal product family. In this way the performance range covers 2 to 1,030 l/h, with one standard operating concept, control concept and spare parts management. All three pumps are available in the basic version without their own internal electronic system and as the microprocessor version for a fast and reliable adaptation to changing dosage requirements.

Advantages

High processing quality: Reproducibility of dosage better than ±1%
Simple operation: Immediate adjustment and monitoring of dosage performance in full text via the large illuminated LC display (control version)
Smooth connection to complex processing management systems through optional fitting with PROFIBUS® DP interface (control version)
Simplified spare parts management and less stock storage with the same availability of pumps within the Sigma product family
Less training expenditure for operators when using the Sigma product family because the use the same operating mode

Application Areas

Metering of chemicals and additives in proportion to volume in treatment of boiler feed water

Features

Performance range 2 - 76 l/h, 320 - 12 bar
High strength metal internal housing for parts which are subjected to stress as well as additional plastic housing for corrosion protection
Stroke length: 15 mm, adjustable using self-adjusting knob at 0.2% stages
Metering head materials: Stainless steel 1.4571/1.4404
Reproducibility of metering better under defined conditions and correct installation ± 1% (stroke length 30-100%)

Features Basic Type (S2Ba)

Wide selection of drive variations: Three-phase standard motor, single-phase alternating current motor, motors for use in the EXe and EXde area, different flange designs for use with customer-specific motors.
Protection class IP 55 (optional ATEX-T3/T4)
Stroke length setting: manual (optional with actuator or variable speed drive)

Features Control Type (S2Ca)

Microprocessor control: Optimum combination of rotational control and stop and go operation i.e. works in a wide control field with individual fine adjustment
Simple setting of the individual pump functions with five programme keys
Large backlit LC display
Full text display of the pump capacity in l/h or US gal/h
3 LED display for operational, warning and error signals
Alarm or timer relay
Control via contact or analogue signals (e.g. 0/4-20mA)
Optional integrated 2-Week-Process-Timer The intelligent alternative to the time switch clock
Protection class IP 65
Interface for PROFIBUS®-DP

Technical Data

	at 50 Hz			at 60 Hz
Pump type Sigma/ 2 HK	bar	l/h	strokes/min.	psi	l/h / gph	strokes/min.	suction lift mWS	Connector size Rp
32002	320	1,9	71	4627	2,3 / 0,6	84	5	1/4
23004	230	4,0	129	3335	4,8 / 1,2	154	5	1/4
10006	100	6,4	195	1450	7,6 / 2,0	233	5	1/4

14006	140	6,1	71	2030	7,1 / 1,8	84	4	1/4
10011	100	11,0	129	1450	13,1 / 3,4	153	4	1/4
05016	50	16,7	195	725	20,0 / 5,2	233	4	1/4

07012	70	12,4	71	1015	14,8 / 3,9	85	4	1/4
04522	45	22,5	129	652	26,7/ 7,0	153	4	1/4
02534	25	34,1	195	363	40,8 / 10,78	233	4	1/4

04022	40	22,4	71	580	26,5/ 7,0	84	4	3/8
02541	25	41,5	129	363	49,2 / 18,0	153	4	3/8
01264	12	64,0	195	174	76,0 / 20,1	233	4	3/8

Materials in touch with medium with liquid end version

Material	Liquid end	Suction//Discharge connection	Seals	Balls	Ball seat
SST	stainless steel W.Nr. 1.4571 / 1.4404	stainless steel W.Nr. 1.4571 / 1.4404	PTFE or. PTFE with graphite	Ceramic	Stainless steel W.Nr. 1.4571 / 1.4404