Vietnamese
Overview
Special feature
●Four display screens by switching
●Mask processing
Manual mask processing is available.
Mask processing can be applied to obstacles within the sensor's directional angle for measurement.
●Communication Functions
Three communication functions enable remote control.
1) RS-485 (MODBUS protocol)
2) 4-20mA current output
3) Alarm output contact
Applications
Liquid and powder level control of tanks, etc.
Water level measurement of lakes, swamps and rivers
Specifications
| Model | HD350-A | |
| Number of Channels | 1CH | |
| Frequency | 50kHz | |
| Object of measurement | Liquid & Powder | |
| Distance measurement range | 0.3～10m | |
| Resolution | Measure | 1ｍｍ |
| Display | 1ｍｍ | |
| Accuracy | ±0.25%F.S. (±2.5cm) | |
| Data updating cycle | 0.5 seconds | |
| Sensor Direction Angle | 14°(-6dB) / 10°（-3dB) | |
| Power | Voltage | DC12～24V 10% |
| Power consumption | 3W | |
| Display | Graphic liquid crystal | |
| Display size | LCD 28.1ｘ9.1ｍｍ | |
| Output | Alarm output | 1 each upper and lower NPN open collector |
| 4-20mA current output | Resolution: 12bit (Maximum load resistance: 500Ω) | |
| Interface | RS-485 (transmission distance: within 1200m) | |
| Model | HD350-A |
| Ambient operating temperature | -20～70℃ |
| Material properties | PP (polypropylene) |
| Structure | Equivalent to IP65 (Equivalent to IP20 when lid is open) |
| External Dimensions | φ93x110mm |
| Wiring cable length | 10m |
| Mass | 350g |
| Mounting screw（Former JIS) | G2(PF2) |
●Optional accessory: 30m cable
*Use resin nuts, flanges, etc. for installation.
Do not use metal nuts or flanges. Doing so may cause measurement errors.
Sensor mounting
Ultrasonic Level Meter Cautions for Sensor Installation
(1) Avoid obstacles
Install the ultrasonic level meter so that there are no obstacles within the sensor pointing angle of the ultrasonic level meter.
Mask processing can be used for measurement.
(2) Install horizontally
Install the ultrasonic sensor so that its transmitting and receiving surfaces are horizontal to the object to be measured. Also, avoid installing the sensor in the center of the tank.
(3)Do not install more than one ultrasonic sensor.
Installing multiple ultrasonic level meters in the same tank will result in mutual interference and inaccurate measurements.
(4)/(5)Avoid areas where waves or bubbles are generated.
If there are severe waves or bubbles on the liquid surface, measurement may not be possible.
*Use plastic nuts or flanges for installation.
Do not use metal nuts or flanges. Doing so may cause measurement errors.
