AMR Ready Series Multi Jet Water Meter

RAHUL MJ water meter is a type of network oriented flow meter having a longer working life than most of its
peers . This is a mechanical device having a magnetic coupling enabling frictionless movement to provide fault
less and accurate reading.

Application –
Automatic Meter reading measuring the volume of cold potable water passing through the pipeline.

Sizes –
DN15mm, DN20mm, DN25mm,

Register Type –
Available in Polycarobate

Feature –
1.Overflow – Under flow of water, with time stamps
2.Continues water running alarm.
3.Meter Temper Detection
4.15 days data save in case of no network connectivity.
5.Magnet attack Detection and alarm
6.Lora Antenna blocking alarm
7.Backflow alarm
8.Battery Monitoring
9.Network strength monitoring.

Maximum Permissible Error –
In the lower zone from Qmin inclusive upto but excluding Qt is +5%.
In the upper zone from Qt inclusive upto and including Qmax is +2%.

Working Condition –
Water temperature < 55 for cold water meter
Water pressure < 1MPa or 1.6MPa optional (10bar or 16bar optional)

Note –
Technical data conforms to Indian Standard 779:1994, MID CE&International Standard ISO:4064 as follows

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Dimensions
Type	Size (mm)	Length (mm) (Tol.= 0, -2)	Length with nipple (mm) Tol= ±5	Width (mm) W Tol = ±1	Height (mm) H Tol= ±2	Connecting Thread D
Multi Jet Class B	15	165	250	83	97	G 3/4B
	20	190	290	83	101	G 1B
	25	260	380	99	117	G 1.25B
	40	300	430	210 (Max)	375 (Max)	G 2B
	50	330	470	124	139	G 2.50B

Technical Specification
Normal Size DN(mm)	Class of measurement	Overload Flow-rate Q_max(m³/h)	Permanent flow-rate Q_n(m³/h)	Transitional flow-rate Q_t(l/h)	Minimum flow-rate Q_min(l/h)
15	B	3	1.5	120	30
20	B	5	2.5	200	50
25	B	7	3.5	280	70
40	B	20	10	800	200
50	B	30	15	1200	300

Sr. No	Specifications	Dimensions	Tolerances
1	Overall length with Nipples (Lt)	250	±5
2	Overall length without Nipples (L)	165	0, -2
3	Total Width (W)	83	±1
4	Height (H)	97	±1
5	Threads (Nipples, Tn)	G1/2"B	Via Go/No Go
6	Threads (Body, Tb)	G3/4"B	Via Go/No Go

MATERIALS FOR BODY AND COMPONENT PARTS OF DOMESTIC WATER METER, SIZE 15, 20 & 25 MM
S.No.	Body / Component parts of water meter	Material used
1	Body	Brass
2	Registration Box	ABS
3	Registration Box Cover (Visual)	Polycarbonate
4	Cap/Cap lid	ABS
5	Screws & Studs	High tensile brass
6	Strainer	HDPE
7	Impeller	Acetal Polymer (Delrin)
8	Chamber	ABS
9	Impeller Shaft	Stainless Steel
10	Nipples & Nuts	Brass
11	Bearings	Sapphire (Synthetic)
12	Dial & Counter	ABS