Flowmeters and System Solutions
Flowmeters and System solution.
Flowmeters and System Solutions
Flowmeters and System solution.
PRODUCTS
Format：ROU28S
The ROU28S is a receiver designed for MASFLO-OVAL Ⅱ (thermal mass flowmeter/controller).
Functions necessary for flow measurement/control are integrated into specialized units.
The ROU28S enables the simple and cost-effective configuration of flow measurement/control systems.
●Small and lightweight receiver equipped with basic functions necessary for flow measurement/control.
●Flow rate value, accumulated flowrate value and flowrate set-point can be switched to the display.
●A flow rate adjustment device and an external input switch are placed on the front, realizing an easy-to-use layout.
●As standard specifications, it includes external output (analog and pulse) and external control input functions.
Therefore, flexibility of system design can be improved.
●By combining the readout unit with the MASFLO-OVAL II series, a flow measurement system can be easily configured.
| Item | Description | ||
|---|---|---|---|
| Measurement | Measurement types | Instantaneous flowrate value/accumulated flowrate value | |
| Measurement method | A/D conversion method Resolution: Approximately 1/7000 (relative to full-scale input) |
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| Input measurement interval: Approximately 20 ms | |||
| Low-cut | 0 to 29% of maximum analog input (can be set arbitrarily) | ||
| Display | Display | Red LED, Character Height: 8 mm (Zero-Blanking Method) | |
| Display switching | Switch between displaying flowrate value and accumulated value using the ▲ key (Requires setting in “Mode No.4”) ※When the DISP switch is set to OUT |
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| RA lamp | Lights up (red) during flowrate value display | ||
| TO lamp | Lights up (red) during accumulated value display | ||
| OV lamp | Lights up (red) when the displayed measurement value exceeds the range (During right-shifted display, it blinks) |
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| OUT1 lamp | Lights up during output of Alarm output OUT1 | ||
| OUT2 lamp | Lights up during output of Alarm output OUT2 | ||
| Instantaneous value display |
Measuring accuracy | ±0.3% (F.S.) ±1 digit (at 23°C) for analog input | |
| Scaling method | Arbitrary setting of instantaneous flowrate value display at maximum analog input （0.001 to 9999） |
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| Display range | 0 to 9999 (When the displayed value exceeds this range, “9999” blinks and OV Lamp lights up) | ||
| Decimal point representation | Set at the maximum display value (Mode No.1). | ||
| Display sampling time | Averaging the display in approximately 0.5 seconds (fixed) | ||
| Least significant digit correction |
Averaging the display in approximately 0.5 seconds (fixed)
Least Significant Digit Correction: Selectable from “Normal,” “0 fixed,” and “0 or 5” |
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| Accumulated value display |
Measuring accuracy | ±0.3% (F.S.) ±1 digit (at 23°C) for analog input | |
| Scaling method | Arbitrary setting of accumulated value per hour at the maximum analog input value by mode setting | ||
| Display range | 0 to 99999 | ||
| Decimal point display | Selectable from 1 to 4 decimal places. | ||
| Over (OV) display | When the displayed value exceeds 99999, it automatically shifts one digit to the right (continuing with right-shifted display). During right-shifted display, the OV Lamp blinks. If the display exceeds the x10 scale, the OV Lamp lights up and the display becomes endless. |
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| Display offset | The accumulated value after reset can be arbitrarily set in the range of 0 to 99999 by setting the display offset value. | ||
| Input signal | Flowrate signal | DC 0 to 5V, D-sub, input resistance 330KΩ | |
| External setting signal | DC 0 to 5V, terminal block, input resistance 330 KΩ | ||
| VOR IN | Not used for MASFLO-OVAL II | ||
| Operating section | Mechanical dial (CMDSET) |
Minimum scale of 10 rotary type potentiometer: 1/50 turns Equipped with a lock lever (to fix rotation and scale) (The scale on the dial serves as a reference for the amount of rotation) |
|
| Set it to the desired flowrate for control | |||
| VOR switch | Not used for MASFLO-OVAL II (CONT only) | ||
| Command changeover switch (COMMAND) |
EXT: The external setting value signal becomes the display for the flowrate setpoint. INT: The CMDSET mechanical dial (CMD) setting becomes the flowrate set-point display. |
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| Display changeover switch (DISP) |
SET: Displays the flowrate set-point (relative to COMMAND). OUT: Displays the instantaneous and accumulated flowrate values. |
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| Operation setting switch | Key switches of MODE, ▲, and RST | ||
| Output-related | Power supply rating | ±15VDC, 250mA each or DC +15V 150mA and DC -15V 350mA also supported Ripple noise: 30mV or less |
|
| Setting signal output | DC 0 to 5V, 5mA, D-sub | ||
| External signal output | DC 0 to 5V, terminal block | ||
| Valve opening/closing output | Not used for MASFLO-OVAL II | ||
| Alarm and synchronous output |
Output terminal | Output from terminal blocks 11-12 (OUT1) and 13-12 (OUT2) (common to COM) | |
| Comparison method | Selectable from upper and lower limits | ||
| Output mode | Comparison/synchronization pulse (OUT1: Selectable via mode) | ||
| Preset value setting | Can be set arbitrarily in the preset value setting mode. | ||
| Alarm, synchronous output, and others |
Output judgment | Output determined by comparing the displayed value with the preset value | |
| Output method | NPN open collector output, 2 points
Maximum rating: DC30V, 50mA, MAX |
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| Data backup | Writes the setting values for each mode and accumulated measurement to FRAM (Rewriting limit: 100,000 times or less,
approximately 10 years of retention) |
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| Mode protect function | Switching selection based on mode protect setting
When “ON,” the set value cannot be changed; when “OFF,” the set value can be changed |
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| Warm-up time | 30 minutes or more after power-on | ||
| Power supply | AC 100 to 240V (-15% / +10%), 270 mA max
50/60Hz, approx. 35VA or less |
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| Others | Operating temperature and humidity ranges |
0 to 50°C, 30 to 80%RH (without condensation) | |
| Weight and outside dimensions | Approximately 400g, W96 × H48 × D156 mm | ||
| Main body color | Black | ||
| Housing material | ABS | ||
| Operating environment | Indoor use, Maximum altitude: 2,000m, Overvoltage category II, Pollution level 2 | ||
| Low voltage directive | EN61010-1 | ||
| EMC | EN61326-1 EN55011(Group1 ClassA)、EN61000-4-2、EN61000-4-3、 EN61000-4-4、EN61000-4-5、EN61000-4-6、EN61000-4-11 |
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ROU28S
