| Dimension range | PN | Temperature range | Material |
|---|---|---|---|
DN 50 - 100 | 16 | +5°C to 90 ºC | Grey iron |
| Component | Material |
|---|---|
| Body | Grey iron |
| Meter chamber | Plastic |
| Support pin | Carbide |
| DN | 50 | 65 | 80 | 100 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WP | WS | WP | WS | WP | WS | WP | WS | |||||||||||||
| A | 200 | 270 | 200 | 300 | 225 | 300 | 250 | 360 | ||||||||||||
| B | 120 | 120 | 120 | 120 | 150 | 150 | 150 | 150 | ||||||||||||
| C | 200 | 200 | 200 | 200 | 270 | 270 | 270 | 270 | ||||||||||||
| D | 73 | 73 | 85 | 85 | 95 | 95 | 105 | 105 | ||||||||||||
| Weight | 7,8 | 9,6 | 10,1 | 12,0 | 14,2 | 16,3 | 18,2 | 20,2 | ||||||||||||
| Dimensions in mm, weight in kg. WP and WS corresponds to the building length for the Woltman meter. WS is the standard length for 7170. Choose WS for the same length as AT7169. | ||||||||||||||||||||
The water meter is a type of turbine meter with an unique principle, where a free-flowing spherical turbine rotates in the water stream, which lowers the friction. Its motion is transmitted with magnetic coupling to the counter.
The counter is six-digit, hermetically sealed and 360o rotable to be able to rotate the dial in a good position. The meter is submersible.
DN50-100: consumption displays in m3. The meter also has three indicators which shows 1, 10 and 100 liters per viewing turn.
The meter has sockets for combined pulse/M-bus sensors of HRI-type and a socket for an optical encoder. The pulse type for the HRI-sensor is a polarity-dependent open-collector without sockets but with compensation/indication of backflow, standard pulse 100l/pulse. The M-bus protocol allows data logging for eg. maximum/minimum values and monthly values etc.
| DN | 50 | 65 | 80 | 100 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| qp , continuous flow (m3/h) | 25 | 25 | 60 | 60 | |||||||
| qi , minimum flow (m3/h) | 0,5 | 0,5 | 1,2 | 1,2 | |||||||
| qs, overload flow (m3/h) | 50 | 50 | 120 | 120 | |||||||
| qc, start value (m3/h) | 0,08 | 0,08 | 0,15 | 0,15 | |||||||
| qp/qi , Ratio, horizontal montage | 1/50 | 1/50 | 1/50 | 1/50 | |||||||
| qp/qi , Ratio, vertical montage | 1/25 | 1/25 | 1/25 | 1/25 | |||||||
| Pressure loss at qp (bar) | 0,08 | 0,02 | 0,08 | 0,04 | |||||||
| qp, qs and qi acc. to EN1434. | |||||||||||
Values above (excluding start flow and pressure loss) shows the metrological properties according to the MID standards. The actual values of the meter exceeds the specified data. | |||||||||||
| Flow range | Maximum allowed error |
| qp - qs | ±2% |
| qp - qi | ±3% |
Accessories:
A remote readout module combined with a pulse/data/M-bus/MiniBus-sensor (AT7275MEI...) alternatively optical encoder (AT7275PDY) see resp. product sheet.
The meter can be mounted horizontally or vertically, though not with the display down. A straight line of at least 3 x DN is required in front of the meter. Behind the meter there is no straight line required. No stopping device should be placed near the meter. The system must be cleaned before mounting the the gauge. During commissioning, pressure shocks in the mains should be avoided.
The meter is red with a grey plastic lid. The meter display is marked with SENSUS with qp, year of manufacture, CE- and production number.
| Art.No. | Dimensions (DN) | Length (mm) |
|---|---|---|
| AT 7170-50-200 | 50 | 200 (former WP) |
| AT 7170-50-270 (normal storage) | 50 | 270 (former WS) |
| AT 7170-65-200 | 65 | 200 (former WP) |
| AT 7170-65-300 (normal storage) | 65 | 300 (former WS) |
| AT 7170-80-225 | 80 | 225 (former WP) |
| AT 7170-80-300 (normal storage) | 80 | 300 (former WS) |
| AT 7170-100-250 | 100 | 250 (former WP) |
| AT 7170-100-360 (normal storage) | 100 | 360 (former WS) |
| For DN 150, choose AT 7169A150R100 |
