LED Light Absorption Water Detection Sensors
| Item | Spec. |
|---|---|
| Product type | LED light absorption water detection sensor |
| Series models | GT2-WS GT2S-WS |
| Model characteristics | GT2-WS: head-on type GT2S-WS: side-on type |
| Detection method | Through beam |
| Detecting distance | 2 m |
| Detection object | Liquid or opaque object |
| Power supply | 12–24 VDC ±10%, ripple 10% or less |
| Current consumption | Transmitter: 25 mA or less receiver: 10 mA or less |
| Control output | NPN open collector, sink current 100 mA at 30 VDC or less |
| Operation mode | Light-ON / Dark-ON selectable |
| Response time | 1 ms or less |
| Light source | Infrared LED |
| Light wavelength | 1450 nm |
| Material | Case / lens: polycarbonate |
| Operating temperature range | −10 to +55°C, non-freezing |
| Ambient humidity | 35–85% RH, non-condensing |
| Protective structure | IP67 |
| Weight | Approx. 100 g each, transmitter and receiver |
Specification notes
Q1: What are the TAKEX GT2-WS and GT2S-WS?
A: They are LED light absorption water detection sensors that use the absorption characteristics of water molecules at a 1450 nm infrared wavelength.
Q2: What is the difference between GT2-WS and GT2S-WS?
A: GT2-WS is a head-on type, while GT2S-WS is a side-on type. Their main sensing and electrical specifications are the same.
Q3: Can GT2-WS and GT2S-WS detect transparent water?
A: Yes. The 1450 nm infrared wavelength is readily absorbed by water molecules and is used for transparent water detection.
Q4: What is the detecting distance?
A: Both models use through-beam sensing with a detecting distance of 2 m.
Q5: What light source is used?
A: Both models use a 1450 nm infrared LED.
Q6: What is the response time?
A: The response time is 1 ms or less.
Q7: Can Light-ON and Dark-ON operation be selected?
A: Yes. Light-ON and Dark-ON operation can be selected with the switch on the receiver.
Q8: What is the protective rating?
A: The sensors have an IP67 protective structure and use resin-molded construction.
Q9: What are the pinhole sheets used for?
A: They can reduce the detectable object size or operating margin and can be used with sensitivity adjustment for smaller or nearly transparent objects.
Q10: How should I choose between GT2-WS and GT2S-WS?
A: Select GT2-WS when a head-on optical axis suits the installation, or GT2S-WS when a side-on optical axis better fits the available equipment space.