High-Sensitivity Liquid Level Sensors for River Reservoir Fire Fighting Water Tank and Engineering Water Pool
Features
○ Wide Temperature Range, -30℃ to 85℃
○ Compact Structure with Excellent Cost-Effectiveness
○ High-Sensitivity Sensor Core, Strong Signal Transmission
○ Wide Measurement Range, Low Power Consumption
○ Good Long-Term Stability
○ Strong Interference Resistance
○ Multiple Signal Outputs
○ Supports Customization for Various Specifications
Applications
○ River Reservoir
○ Fire Fighting Water Tank
○ Engineering Water Pool
○ Water Resources Energy
○ Agricultural lrrigation
Description
400A Series Transmitter is a fully independent and self developed liquid level measurement product. Its core sensor utilizes a
built in diffused silicon element.
The product features a fluid dynamics design with a unique arc-shaped housing, effectively eliminating medium disturbances
and ensuring high reliability. It includes a detachable bottom filter cover to prevent clogging, as well as an internal air guide
tube and a triple-layer protection process. With its compact size, superior overall performance, and ost-effectiveness,
it is suitable for various harsh environments.
From R&D design, production assembly, calibration, to quality inspection, every step of our manufacturing process strictly
adheres to international quality production system standards.
Specifications
| Model | 400A Series |
| Pressure Type | Gauge Pressure, Absolute Pressure |
| Range | 0-1 m…300 m(Customizable) |
| Accuracy | ≤ ±0.5%F.S(Standard)； ≤ ±0.25%F.S；Customizable |
| Electrical Performance | 2-wire | 3-wire | 4-wire |
| Output Signal | 4~20mA | 0~5V | 0~10V | 0.5~4.5V | 10~90% Ratio | RS485 |
| Supply Voltage | 8~32V DC | 8~32V DC | 12~32V DC | 8~32V DC / 5V DC | 3~5.5V DC | 8~32V DC |
| Operating Temperature | -30℃~85℃ |
| Storage Temperature | -30℃~85℃ |
| Compensation Temperature | 0~60℃ |
| Electrical Connection | Straight Connection |
| Materials | Housing | SUS304 Stainless Steel (Standard), 316L Stainless Steel (Optional), Customizable |
| Sensor | Diffused Silicon (Standard) |
| O-ring | NBR (Standard), PTFE/CR/EPDM (Optional) |
| Response Time | ≤10ms |
| Protection Rating | IP68 |
| Measuring Medium | Compatible with SUS304 or 316L stainless steel |
| Zero Temperature Drift | 0.05%FS/℃( ≤100kPa) |
| Long-term Stability | 0.2%F.S±0.05%/year |
| Overload Pressure | 150%F.S. |
Dimensions and Wiring Definitions
Wiring Definitions
| Wire Color | 2-wire | 3-wire | 4-wire |
| Red | Power (Vcc+) | Power (Vcc+) | Power (Vcc+) |
| Black | Signal(Iout) | Power (GND) | Power (GND) |
| Yellow | Ground | Ground | Ground |
| Green | / | Signal(Vout) | 485A |
| Blue | / | / | 485B |
Ordering Guide
FAQ
Q1: What makes Songfast's products stand out from competitors?
A: Our technical team has over 20 years of experience in the sensor industry. We provide rapid, professional solutions tailored to our customers' application scenarios and welcome personalized customization requests. With a dedicated production quality management team, we ensure strict quality control while delivering goods within a 30-day lead time.
Q2: What official certifications and industry compliance standards has the company obtained?
A: Our certifications include:
- ISO 9001
- IATF 16949 (automotive)
- ISO 45001 (safety)
- ISO 14001 (environmental)
Additionally, we hold over 20 national patents.
Q3: Do you offer custom development for new products beyond your website offerings?
A: Yes, we provide custom development services tailored to your needs.
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