UTM Series Intelligent Digital Displacer Level Transmitter
UTM Series Intelligent Digital Displacer Level Transmitter
▲ Summary Displacer Level Transmitter
The UTM Series Intelligent Torque Tube Displacer Level Transmitter is a self-developed liquid level control instrument with on-site data processing capabilities. The buoyancy drives the torque tube and core shaft to generate angular changes, which simultaneously alters the sensor signal within the transmitter. This signal is processed by an advanced signal processor to output a standard 4-20mA DC current signal, featuring a backlight LCD display. The processor incorporates functions such as linearization, measurement error compensation, automatic temperature compensation, and HART communication. The float level transmitter can be used to control and measure the liquid level, interface level, or density of media. This product series is widely applicable in industries including petroleum, chemical, power, metallurgy, food, paper making, and environmental protection.
characteristic Displacer Level Transmitter
◆ Torque tube
◆ Intelligent output 4-20mA with HART protocol
◆ High sensitivity
◆ Strong anti-interference
◆ LCD backlight display
◆ Both on-site buttons and handheld devices can be adjusted, making debugging convenient.
◆ The comprehensive technical indicators are better than similar foreign products
▲ Technical Parameter Displacer Level Transmitter
Accuracy class ：0.2%，0.5%
Measuring range ：300 to 3000mm (or custom-made)
Media density:0.4 to 1.5 g/cm³ (liquid level) with a density difference of ≥ 0.05 g/cm³ (interface level)
Nominal pressure ： 1.6 ～ 42MPa
Medium temperature ：-196 ～ 400℃
Ambient temperature ：-40 ～ +80℃
Output signal ：4-20mA HART protocol or FF bus
Electrical interface: NPT 1/2 (or M20×1.5)
Process connection ：DN40, DN50, or custom-made according to user specifications
Flange standard:HG/T20592 ~ 20635-2009 or according to the user's standard manufacturing
Heated interface:Use the user's standard manufacturing
Heating pressure:≤ 0.6MPa
Explosion-proof type:Intrinsic Safety Type: Ex ia II CT4/T5/T6
Explosion-proof:Ex d II CT6 Gb
levels of protection ： IP66
▲ Structure Principle
The UTM model displacer level transmitter consists of forged process wafer body, inner displacer, torque tube system, and electronic measurement system. The inner displacer is submerged in the liquid within the chamber and rigidly connected to the torque tube system. The force acting on the torque tube equals the net difference between the displacer's weight and buoyancy. This resultant force causes the torque tube to twist at a specific angle. Changes in the liquid's position, density, or level height within the chamber alter the buoyancy experienced by the submerged float, thereby modifying the torque tube's rotation angle. This angular change is transmitted to the rigidly connected sensor, causing variations in the sensor's output voltage. Electronic components then amplify and convert these voltage changes into a 4-20mA current output. The transmitter employs a microcontroller with associated electronic circuits to measure process variables, provide current outputs, drive an LCD display, and support HART communication capabilities.
