This ultrasonic sensor delivers excellent beam control and strong signal transmittance. Therefore, it ensures stable and accurate detection. Moreover, the controller-integrated design simplifies installation and operation. In addition, the ultra-narrow ultrasonic beam angle of just 2.5 degrees per side enables precise targeting. As a result, users can install the sensor even in confined or complex spaces. Furthermore, the availability of both 4-wire and 2-wire DC power options increases system flexibility. Meanwhile, multi-controller configurations support up to 15 channel connections, so large-scale systems remain easy to manage. Consequently, this solution adapts smoothly to diverse industrial environments while maintaining reliable performance.
Towa Seiden Kogyo Co.
Towa Seiden SGV-380 Ultrasonic Level Indicator 2-Wire Type For Liquid

Manufacturer: Towa Seiden Kogyo Co., Ltd.
Model: SGV-380
Features
Specifications
| General Specifications | |
|---|---|
| Product Name | EchoTREK SG(E)□-300 Series |
| Sensor Material | Polypropylene (PP), PVDF, PTFE (SGF/T-390, 380, 370 only) |
| Housing Material | Aluminum alloy (powder coating), Plastic |
| Operating Temperature (Sensor) | −30°C to +90°C |
| Ambient Temperature | −25°C to +70°C (protect from direct sunlight) |
| Allowable Pressure | 0.05–0.3 MPa (0.5–3 bar) |
| Seal Material | PP type: EPDM / Others: FPM (Viton) |
| Waterproof / Dustproof | Sensor: IP68 / Housing: IP67 |
| Power Supply / Consumption | DC 13.4–36 V / 48–720 mW, reverse polarity & surge protection |
| Performance Specifications | |
|---|---|
| Accuracy | ±(0.2% of measured distance + 0.05% of span) |
| Resolution | <2 m: 1 mm 2–5 m: 2 mm 5–10 m: 5 mm >10 m: 10 mm |
| Output | 4–20 mA (3.9–20.5 mA) Rmax = (Ut − 13.4 V) / 0.02 Ω (SAP-200) 6-wire, IO-Link / Digital Optional: HART (250 Ω) |
| Electrical Connection | 2×M20, 2×1/2″ NPT, cable 0.5–1.5 mm² |
| Electrical Protection | Class III |
| Item | SG(E)-390 | SG(E)-380 | SG(E)-370 | SG(E)-36G | SG(E)-34P |
|---|---|---|---|---|---|
| Max. Measuring Distance | 4 m | 6 m | 8 m | 10 m | 15 m |
| Min. Measuring Distance | 0.2 m | 0.25 m | 0.35 m | 0.35 m | 0.45 m |
| Ultrasonic Beam Angle | 6° | 5° | 7° | 5° | 5° |
| Measuring Frequency | 80 kHz | 80 kHz | 50 kHz | 60 kHz | 40 kHz |
| Process Connection | G1 1/2″ | G2″ | G2″ | JIS10K80A | JIS10K125A |
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