MADDALENA SJ ONE

SJ ONE is the ultimate single-jet meter expression. Thanks to its mechanical transmission, it offers high metrological performance and is insensitive to external magnetic fields. Its “protected rollers” solution, first developed by Maddalena, ensures perfect legibility over time. Compact, and robust is suitable for the most challenging environments. It can be equipped with the latest remote data transmission technologies.

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Description Technical Data Dimensions & Communication modules

SJ ONE

FEATURES

• Protected rollers single jet meter for cold water
• Ideal for utilities and outdoor installations
• MID-certified: HR 315
• DN: 15÷25
• Health certifications available for a number of countries
• Mechanical transmission unaffected by external magnetic
fields
• Mineral glass lens
• Supports various installation positions
• Ready for optional reed switch (1P=1-10-100-1000L) or
static pulse emitter (1P=1-10L)

TYPICAL ERROR CURVE

HEAD LOSS DIAGRAM

METROLOGICAL PERFORMANCE

Size	mm	15	20	25
	in	½	¾	1
Module B no.		IT-033-22-213
Module D no.		0119-SJ-A010-08
Q3/Q1=R Referred to installation position		H ≤ 315 V ≤ 100
MID standard performance*
Q₃	m³/h	2,5	4	6,3
Q₄	m³/h	3,13	5	7,88
R		160
Q₁	l/h	15,63	25	39,38
Q₂	l/h	25,01	40	63,01

* Other values of R available upon request.

TECHNICAL DATA

Maximum permissible error between Q₁ and Q₂ (excluded)		+/- 5%
Maximum permissible error between Q₂ (included) and Q₄		+/- 2% with water temperature ≤ 30°C +/- 3% with water temperature > 30°C
Temperature class		T50
Flow profile sensitivity classes		U0 – D0
Starting flow rate	l/h	4-5	7-9	12
Head loss		ΔP63
Nominal pressure	bar	16
Maximum reading	m³	99.999
Minimum reading	l	0,05
Indicative weight	kg	0,57	0,69	1,25