Electromagnetic Water Meter : SY Series
Feature
| Measurement feature | Accurate measurement of small flowrate |
|---|---|
| Measurement range | 1:1000 |
| Measurable water | City water, plant water, agricultural water *1 |
| Meter connection method | Flange(JWWA standard) type |
| Body material | Cast stainless steel |
| Flow path | Cone structure |
Enhanced Durability! Lnnovative water meter for the new-era
As consumption of water has increased in the recent years, an advanced water meter has been desired for the use of long time and stable high accuracy measurement with trouble-free operation. Responding to these needs, Aichi has conducted proprietary research over and over and has succeeded in developing the world′s first electromagnetic water meter “SU Series” and “SY Series” that provides 8 years of non-stop service with built-in battery. These water meters for the new-era are suitable for water control with innovative enhanced durability that expands the world of measurement.
Outstanding features that expand the world of measurement
Outstanding durability with no moving parts
Since there are no rotating or sliding parts such as vane wheel or indication gears, troubles caused by wear of moving parts and intrusion of foreign substances are eliminated. Therefore, stable measuring accuracy can be maintained over a long period of time.
High accuracy measurement whether large continuous or small flowrates
The SU Series has almost no head pressure loss at maximum flowrate measurement, it is suitable for measuring flowrates of large continuous water supply and distribution. The SY Series is capable of measuring small flowrates with high accuracy owing to its special structure.
Wider measurement range
The measurement range is as wide as 1:200 for the SU Series, and 1:1000 for the SY Series. High-accurate measurement from very small (min. accurate flowrate) to large (max. flowrate) flowrates is possible.
8 years of continuous operation with a built-in battery
The power consumption has been reduced to 1/1000 (according to Aichi's comparison data) from the conventional general electromagnetic flowmeter, and with a built-in lithium battery applied, 8 years of continuous measurement is realized. Consequently, there is no need of maintenance during this period.
Constant display on easy-to-read LCD
Bright and large LCD have been incorporated for the digital display of integrated flow and instantaneous flowrate values of all times. By utilizing such instantaneous flowrate value, flowrate adjustment of water supply and distribution can be easily performed.
Free installation position allows installation anywhere
Having no mechanical moving parts, the meter can be installed on a horizontal, vertical or inclined position, allowing installation anywhere with very little restriction for its location.
All stainless steel body with outstanding durability
Both the compact design wafer type (SU)* and easy-to-install flange type (SY) are made of all stainless steel body having the feature of long life.
*The SU with 250, 300 and 350mm nominal diameters are flange types.
Flexible corresponding to various systems of specific use
Since these meters are equipped with electronic statement signal output function, installation of transmitter for specific use will enable flexible corresponding to various systems such as remote meter reading, automatic meter reading, as well as monitoring and controlling.
Overview
| Item | Nominal diameter | ||||
|---|---|---|---|---|---|
| 50 | 75 | 100 | 150 | ||
| Flow-rate range | Max. flow-rate (2qp)(m3/h) | 40 | 90 | 160 | 300 |
| Standard flow-rate (qp)(m3/h) | 20 | 45 | 80 | 150 | |
| Transitional flow-rate (qt)(m3/h) | 4 | 9 | 16 | 30 | |
| Min. flow-rate (qmin)(m3/h) | 0.6 | 1.35 | 2.4 | 4.5 | |
| Min. accurate flow-rate (qc)(m3/h) | 0.04 | 0.09 | 0.16 | 0.3 | |
| Measurement starting flow-rate (qs)(m3/h) | 0.01 | 0.0225 | 0.04 | 0.075 | |
| The meter does not measure a flowrate less than the measurement starting flowrate (qs). The qs to qmin flowrate range is not within the calibration tolerance. | |||||
| Max. limit flow-rate (qL)(m3/h) | 60 | 120 | 200 | 400 | |
| The 2qp to qL flowrate region is not within the calibration tolerance. | |||||
| Pressure drop at max. flow-rate (MPa) | 0.041 | 0.039 | 0.035 | 0.032 | |
| Working pressure (MPa) | 0.75 (Approx. 7.5kgf/cm2) | ||||
| Display | Integrating flow (m3) | 999999.9999 | 9999999.999 | ||
| Instantaneous flow-rate (m3/h) | 99.99 | 999.9 | |||
| Meter weight (kg) | 10 | 12 | 16 | 25 | |
| Item | |||
|---|---|---|---|
| Display | No-water warning mark |  mark lights |
|
| Low-battery alarm mark |  mark flickers |
||
| Measurement stop alarm mark |  mark lights |
||
| Measured fluid | Suitable working temperature (°C) |
0 to +30 | |
| Fluid conductivity rate (μs/cm) | 50 or more | ||
| Power supply and battery life | Lithium battery (Nominal 3.6V), battery life approx. 8 years (At average environmental temperature of 20°C) | ||
| Environmental temperature range (°C) | -10 to +55 (The battery life is shortened at higher temperature.) | ||
| Waterproof structure | JIS C0920 (Underwater use), continuous use at 1m water depth is possible | ||
| Piping method | Flange (JWWA standard) type | ||
| Meter installation position | Free (Horizontal, vertical and inclined installation are possible.) | ||
| External output | SY-FN type | No external output functions (Only field display) | |
| SY-FC type | Electronic statement signal for exclusive independent receiver (SR-4 type) | Transmitter: MX35 type | |
| SY-FM type | Open drain unit pulse signal | Transmitter: MX39 type | |
| SY-FL type | 8-bit electronic statement signal (The signal widely diffused in Japan for water and gas meters), open drain unit pulse signal | Transmitter: MX38 type | |
Accuracy
Head Loss
Dimensions
Transmitter specifications MX Series
MX35 type
| Signal | Electronic statement signals for exclusive independent receiver (SR-2 type) |
|---|---|
| Number of wires | 2 |
| Transmitting distance | 50m with standard cable |
| Life | Approx. 10 years |
MX39 type
| Signal | Open drain unit pulse |
|---|---|
| Pulse ON time | 100±10ms |
| Pulse unit | 100L/P or 1m3/P (10m3/p·special specification) |
| Number of wires | 2 |
| Transmitting distance | 200m with standard cable |
| Life | Approx. 10 years |
MX38 type
| Signal | 1) Ver. 2.6A Only 8-bit electronic statement 2) Ver. 2.6A 8-bit electronic statement and open drain unit pulse |
|---|---|
| Number of wires | 2 wires for 1), 4 wires for 2) |
| Transmitting distance | 200m with standard cable (When connected with independent type receiver QA8D-1R) |
| Life | Approx. 8 years (Differs according to number of readings) |