| Model No. | HLF810 | HLF820 | |
|---|---|---|---|
| Measurement method | Measuring propagation time difference between sending and receiving ultrasonic wave | ||
| Accuracy | ±1% R.D.(DIW at 20℃) | ||
| Data update cycle | 0.01 sec. | ||
| power source | Voltage | 24 V DC ±10 % (21.6 – 26.4 V) | |
| Power consumption | 4 W | 5 W | |
| Display | – | Vacuum fluorescent display(VFD), 16 characters x2 lines | |
| Digital input | Open collector input no-voltage contact input, 2 points Selectable from integrated value reset or zero-point adjustment |
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| Output | 4-20 mA current output | 2 points Resolution: 12bits (Max. load resistance 450Ω） |
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| Digital output | Open collector output (Max. 35 V/0.1 A), 2 points Selectable from comparison, integrated pulse, instantaneous frequency, or error output |
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| Interface | RS-485 (MODBUS * protocol, RTU mode) Up to 32 converters can be concatenated (address setting : 1- 32) Baud rate: 9600, 19200, 38400, 57600 bps |
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| Case material | ABS | ||
| Ambient operating temperature | 0 to 50℃ (No condensation) | ||
| Weight | 130 ｇ | 230 g | |
| Installation | DIN rail | Panel mount | |
* MODBUS is the registered trademark of Schneider Electric USA, Inc.
Sensor
| Model No. | HLFS01-04 | HLFS01-06 | |||
|---|---|---|---|---|---|
| Measurement target | Ultrapure water / Deionized water / Chemical liquid | ||||
| Flow rate measurement range | 0 to 2L/min | 0 to 6L/min | |||
| Connection tube size | 1/4 inch | 3/8 inch | |||
| Accuracy | Measured flow rate | 0 to less than 800mL/min | 800 to 2000mL/min | 0 to less than 2000mL/min | 2000 to 6000mL/min |
| Accuracy | ±8mL/min | ±1% R.D. | ±20mL/min | ±1% R.D. | |
| Max. operating pressure | 0.5MPa (0 to 90℃) / 0.2MPa (90 to 200℃) | ||||
| Max. fluid temperature | Standard type | 0 to 90℃ | |||
| High temperature type | 0 to 180℃ | 0 to 200℃ | |||
| Ambient operating temperature | 0 to 80℃ | ||||
| Liquid contact surface material | NEW PFA | ||||
| Weight | 90g | 110g | |||
| Pressure loss factor | 3.7863 | 0.0937 | |||
| Model No. | HLFS01-08 | HLFS01-12 | |||
|---|---|---|---|---|---|
| Measurement target | Ultrapure water / Deionized water / Chemical liquid | ||||
| Flow rate measurement range | 0 to 20L/min | 0 to 50L/min | |||
| Connection tube size | 1/2 inch | 3/4 inch | |||
| Accuracy | Measured flow rate | 0 to less than 4.3L/min | 4.3 to 20L/min | 0 to less than 11.8L/min | 11.8 to 50L/min |
| Accuracy | ±43mL/min | ±1% R.D. | ±118mL/min | ±1% R.D. | |
| Max. operating pressure | 0.5MPa (0 to 90℃) / 0.2MPa (90 to 200℃) | ||||
| Max. fluid temperature | Standard type | 0 to 90℃ | |||
| High temperature type | 0 to 200℃ | ||||
| Ambient operating temperature | 0 to 80℃ | ||||
| Liquid contact surface material | NEW PFA | ||||
| Weight | 130g | 160g | |||
| Pressure loss factor | 0.1146 | 0.0138 | |||
| Model No. | HLFS01-16 | ||
|---|---|---|---|
| Measurement target | Ultrapure water / Deionized water / Chemical liquid | ||
| Flow rate measurement range | 0 to 80L/min | ||
| Connection tube size | 1 inch | ||
| Accuracy | Measured flow rate | 0 to less than 20L/min | 20 to 80L/min |
| Accuracy | ±200mL/min | ±1% R.D. | |
| Max. operating pressure | 0.5MPa (0 to 60℃) / 0.2MPa (60 to 200℃) | ||
| Max. fluid temperature | Standard type | – | |
| High temperature type | 0 to 200℃ | ||
| Ambient operating temperature | 0 to 80℃ | ||
| Liquid contact surface material | NEW PFA | ||
| Weight | 212g | ||
| Pressure loss factor | 0.0033 | ||
Pressure loss
⊿P＝AQ2
⊿P: Pressure loss[KPa] , A: Pressure loss factor (20℃ Pure water), Q: Flow rate [L/min]
Connection cable between converter and sensor
| Model | HLFS01 cable 5m | HLFS01 cable 7m |
|---|---|---|
| Material | ETFE | |
| Length | 5 m | 7 m |
| Weight | 150 g | 210 g |
Advanced signal processing with DSP (Digital Signal Processor) enables accurate and stable flow measurement
Utilizing ultrasonic wave transfer in liquid measures flow speed and accurate flow rate can be calculated.
A couple of ultrasonic sensors are located in the sensor unit and transfer speed btween them with liquid flow shows the speed. The flow speed represent the flow rate inside the tube of sensor unit.
○There is no part or construction inside the tube, so the least pressure loss is expected.
○Flow rate measurement range is wide from low to high.
Features
Stable measurement by DSP (Digital Signal Processor) even with bubbly environment
●Fitting two sensor unit to one main unit
| Realizes good space factor and cost effectivity by controlling two sensors in one main unit. Different chemical, different size measurement is possible. |
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●Good readability by VFD
| VFD (Vacuum Fluorescent Display) gives very good readability in limited installation space (HLF820). |
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●High temperature chemical resistant
| All contacting surface to the measuring liquid is made by chemical resistant NEW PFA. Genuine sel-developed ceramics element realizes the use in high temperature liquid up to 200 deg C (K type). |
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●Detachable cable enables easy installation
| Sensor cable can be detached from the sensor unit, so the installation of the sensor unit is easily done without cable. The cable length can be selected fro 5 or 7 meters. |  |
●PC monitoring is possible by RS-485 communication
| “HLF800 monitor” is supplied for PC monitoring. Install the software to Windows PC and it controls the parameter setting and monitors the measurement data via RS-485 communication. |  |
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