Level Measurement
Ultrasonic Level Transmitter
The Accumax Ultrasonic Level Transmitter measures level across a range of 0 to 20 m with a stated accuracy of ±0.3 % and a blind area of 0.45 to 0.6 m. Readings are shown on a local LCD display, and the transmitter provides both a 4-20 mA analogue output and RS 485 serial communication. It is powered from a DC 24 V supply.
Features
-
0 - 20 m measuring range
Stated measuring range of 0 to 20 m.
-
±0.3 % stated accuracy
The source states ± 0.3 % but does not say whether this is of reading or of span.
-
Local LCD display
Readings shown on an on-board LCD display.
-
Dual output: 4-20 mA and RS 485
Analogue current output plus RS 485 serial communication.
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24 V DC powered
Power supply stated as DC 24V.
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Blind area 0.45 - 0.6 m
Stated blind area nearest the sensor.
Technical specifications
12 values · 4 groups
These values are transcribed from the manufacturer's datasheet and are pending engineering sign-off. Confirm critical figures with Accumax before specifying.
| Measurement | |
|---|---|
| Measuring variable | Level, Distance |
| Measurement type | Continuous non-contact level measurement of liquid, slurry, sludge, solid and other media |
| Accuracy reference condition | Standard condition |
| Display and Mechanical | |
| Display | LCD display, liquid level or space distance |
| Installation method | Threaded mounting, flange mounting |
| Electrical | |
| Lighting protection | Lighting protection device built-in |
| Communication | |
| Communication interface | Modbus communication interface, or customized |
| Transmission mode | Standard RTU |
| Parity | None |
| Default data float | Most significant register first |
| Register | Holding Register |
| Unit of flow / level | Level in Meter only |
Source: Ultasonic_Level_Transmitter_Manual
23 further specification s are listed in the datasheet but not reproduced here
These labels appear in the datasheet, but the value beside them could not be read reliably from the document. Rather than print a figure we cannot stand behind, we have left them out — ask us and we will confirm them directly.
- Measuring range — printed as "Measuring range __M ~ __M"; both figures lost
- Accuracy — only the qualifier "Standard condition" survived; the percentage is lost
- Resolution — printed as "Resolution __ mm"; the figure is lost
- Protection — printed as "Protection IP__"; the IP digits are lost
- Temperature — label present, value entirely lost
- Relative humidity — printed as "Relative humidity __ ~ __%RH, no condensation"; the range is lost
- Current output — printed as "Current output __ ~ __ mA"; both figures are lost
- Power supply — printed as "Power supply DC __V / AC __V"; both voltages are lost
- Communication bus number — printed as "Communication RS___ Modbus"; the RS number is lost (do NOT assume RS485)
- Baud rate — label present, value lost
- Default baud-rate address — printed as "Default address is __"
- Word Length — value lost
- Stop bit — value lost
- Slave response timeout — printed as "Slave response timeout __ ms"
- Delay between polls — printed as "Delay between polls __ ms"
- Default Device ID — value lost
- Modbus Starting Address — value lost
- Modbus Length — value lost
- 4-20 mA span endpoints — "the low position corresponding to the value of __mA current" / "the high position corresponding to the value of __mA current"
- Startup time — printed as "It takes about __ seconds to prepare this product from startup to normal measurement"
- Blind area — discussed throughout the installation guidance but every figure is lost, and the spec table has no blind-area row
- Nozzle length vs. minimum inner diameter table — all mm figures lost
- Maximum range vs. minimum distance from wall table — all figures lost
Frequently asked questions
What is the measuring range of the Accumax ultrasonic level transmitter?
0 to 20 m.
What is the blind area?
The stated blind area is 0.45 to 0.6 m.
What output signals does it provide?
4-20 mA and RS 485.
What supply voltage does it need?
DC 24V.
How accurate is it?
The stated accuracy is ± 0.3 %. The source does not state whether this refers to reading or to full scale.
Does it have a local display?
Yes, it has an LCD display.
Gallery
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