Parameter

Unit

Data value

Nominal Diameter

DN 15      DN20      DN25

Start flow rate

M3/h

0.002           0.002           0.005

Qmin (Q1)

M3/h

0.010           0.010           0.016

QTransitional (Q2)

M3/h

0.016           0.016           0.025

Qmax/permanent (Q3)

M3/h

2.5             2.5             4.0

Qoverload(Q4)

3.125           3.125           5.0        

Range ratio=Q3/Q1

250             250            250        

Metrology accuracy

2 class          2 class          2 class

Q1~Q2 error

<3%            <3%            <3%

Q2~Q4 error

2%             2%             2%         

Max working pressure

MPa

1.6MPa         1.6MPa         1.6MPa     

Pressure loss

KPa

<25             <25            <25        

Temperature

℃

4℃-65℃        4℃-65℃       4℃-65℃    

humidity range

%RH

<95             <95           <95

Channel length

mm

110mm         130mm         160mm     

Maximum registration (LCD)

M3

99999.999

Min instant-flow reading (LCD)

M3/h

              0.001             

Max instant-flow reading (LCD)

M3/h

              9.999             

Battery

Battery type

Lithium

Battery life

Year

                >10             

Smart function

Communication

M-bus/Impulse output

Temperature compensation

YES

Mechanics

Channel material

Brass body

Water & dust proof

IP68

Thread pattern

mm

33*2.309     33*2.309           33*2.309