Product Description
QTLM Ultrasonic Level Transmitter – Available in Various Ranges
Product Introduction
The ultrasonic level transmitter Model QTLM is a reliable solution for level measurement in tanks, manufactured in China by Nik Senso Tech. This device utilizes non-contact ultrasonic technology to deliver accurate and stable level measurements, making it suitable for a wide range of industrial applications. The QTLM model is available in various measuring ranges, which can be produced according to customer requirements and specific application needs.
Operating Principle
This device calculates the distance to the liquid or solid surface by transmitting ultrasonic waves and receiving their reflection after they bounce off the target. Eliminating direct contact with the medium reduces wear and extends the service life of the equipment.
Features and Advantages
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Non-contact and reliable operation
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Simple installation and low maintenance requirements
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Suitable for industrial environments with humidity and electrical noise
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Cost-effective design with robust construction
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High compatibility with instrumentation and control systems
Installation and Setup
During installation, the measurement range, zero point, and environmental conditions must be properly configured. Accurate adjustment of these parameters ensures optimal performance and long-term stability. The standard current output and HART communication protocol allow easy integration with most industrial controllers.
Display and User Interface
This model is equipped with an LCD display that provides clear readouts of measured values. Three push buttons—F1, F2, and F3—are provided for convenient configuration, calibration, and parameter adjustment.
Connection and Compatibility
The two-wire 4–20 mA output with 250 Ω load capability and HART support ensures compatibility with a wide variety of PLCs, DCS systems, and monitoring equipment. This makes the device a versatile choice for medium-scale industrial processes.
Technical Specifications
| Parameter | Specification |
|---|---|
| Measurement Type | Ultrasonic – Non-contact |
| Accuracy | 0.5% to 1% |
| Resolution | 3 mm or 0.1% |
| Display | LCD |
| Adjustment Keys | F1 / F2 / F3 |
| Output | Two-wire 4–20 mA with 250 Ω load + HART support |
| Power Supply | 24 VDC |
| System Compatibility | Suitable for most controllers and PLCs |
| Application | Tanks and processes with various height requirements |
| Installation Conditions | According to tank height and environmental conditions |
Manufacturer Information
| Item | Details |
|---|---|
| Brand | Nik Senso Tech |
| Model | QTLM |
| Country of Origin | China |





