


| Parameter | Value |
|---|---|
| Item | Specifications |
| Cable | 0.09 mm24-core cabtyre cable 1 m3.280 ft |
| Weight | Net weight: 15 g approx., Gross weight: 25 g approx. |
| Details | for ø4 mmø0.156 intube |
| Product | For small diameter tubes Optical Bubble Sensor |
| Material | Enclosure: PBT, Tube holder: Polyamide, Indicator: Polycarbonate |
| Part Number | BE-A401 |
| Product name | For small diameter tubes Optical Bubble Sensor BE-A |
| Product Number | BE-A401 |
| Sensing object | Liquid(Note) Sensing is affected by dirt or residues adhered to the inner wall of the tube. Please maintain the tube regularly. |
| Supply voltage | 5 to 24 V DC ±10 % Ripple P-P 10 % or less |
| Cable extension | Extension up to total 100 m328.084 ftis possible with 0.3 mm2, or more, cable.(Note)Confirm that the power supply voltage at the end of cable is more than 4.5 V when using an extension of over 20 m65.167 ft. |
| Clamping torque | 0.5N•m or less |
| Emitter element | Infrared LED(Peak emission wavelength: 855 nm0.034 mil, non-modulated) |
| Detectable air gap | 0.8 mm0.032 inor more(Note) Sensing air gap refers to the width of an air bubble formed in the entire area of the inner diameter of the tube. Please note that this product cannot sense very small air bubbles or water drops. |
| Current consumption | 15 mA or less |
| Operation indicator | Orange LED (lights up with absent liquid) |
| Protection circuits | Power supply reverse polarity protection , Output reverse polarity protection |
| Applicable tube type | Transparent resin tube (equivalent to flexible PVC)(Note) When using a tube out of specifications or it doesn't have a smooth surface, please test sensing on the actual machine before use. |
| Compliant regulation | CE Marking (EMC Directive, RoHS Directive), UKCA Marking (EMC Regulations, RoHS Regulations) |
| Applicable tube dia. (OD×ID) | ø4 mm × ø2.4 mmø5/32 in × ø3/32 in(Note) When using a tube out of specifications or it doesn't have a smooth surface, please test sensing on the actual machine before use. |
| Response time:When detecting bubble | 20 μs or less(Note) Actual response time may differ from specification (typical example using applicable tube) due to dimension, light transmission or surface state of test tube in use. |
| Response time:When detecting liquid | 80 μs or less(Note) Actual response time may differ from specification (typical example using applicable tube) due to dimension, light transmission or surface state of test tube in use. |
| Output (Incorporated with 2 outputs) | NPN open-collector transistor•Maximum sink current: 50 mA•Applied voltage: 30 V DC or less (between output and 0 V)•Residual voltage: 2 V or less (sink current at 50 mA) 1 V or less (sink current at 16 mA) |
| Environmental resistance : Protection | IP40 (IEC) |
| Environmental resistance : Ambient humidity | 35 to 85 % RH, Storage: 35 to 85 % RH |
| Environmental resistance : Shock resistance | 100 m/s2acceleration in X, Y, and Z directions three times each |
| Environmental resistance : Ambient illuminance | Fluorescent light: 1,000 ℓx at the light-receiving face |
| Environmental resistance : Ambient temperature | -25 to +55 ℃-13 to +131 ℉(No dew condensation or icing allowed), Storage: -30 to +80 ℃-22 to +176 ℉(Note) Liquid being detected should also be kept within the rated ambient temperature range. |
| Environmental resistance : Vibration resistance | 10 to 150 Hz frequency, 0.75 mm0.030 indouble amplitude or maximum acceleration 49 m/s2, in X, Y and Z directions for two hours each |
| Environmental resistance : Insulation resistance | 20 MΩ, or more, with 250 V DC megger between all supply terminals connected together and enclosure |
| Environmental resistance : Voltage withstandability | 1,000 V AC for between one min. between all supply terminals connected together and enclosure |
| Output (Incorporated with 2 outputs):Output operation | Switchable either Liquid-absent-ON or Liquid-present-ON |
| Output (Incorporated with 2 outputs):Short-circuit protection | Incorporated |
Technical specifications and performance data
Installation and operation guide