Hitrol Level and Flow Instruments

Product Types

  1. Home
  2. Brands
  3. Hitrol
  4. Level - Level Switch

Level Switch

A level switch is a type of sensor used to detect the level of liquids or solids in a container. It typically works by activating or deactivating an electrical signal when the material reaches a predetermined level. This helps in monitoring and controlling processes in various industries, such as water treatment, food and beverage, and manufacturing, ensuring that tanks don't overflow or run empty. Level switches can be mechanical, float-based, or use other technologies like capacitive or ultrasonic methods.


Capacitance Type — HCC/HPC-95R Series

The HCC-95R and HPC-95R Series are separate type electrostatic capacitance level switches designed to detect the presence or absence of various measured objects, such as liquids or powders. They work by measuring the change in electrostatic capacitance caused by the object in the tank. These devices offer flexible installation options, allowing them to be mounted on the side or top of the tank in different configurations. Additionally, they can provide upper or lower level limit alarm functions to enhance monitoring. The series includes a general type (HCC-75R Series) and an explosion-proof type (HPC-95R Series), catering to different safety and application needs.
 
Principle of Product Measurement using Capacitance:
The principle of measurement for these level switches is based on capacitance. The capacitance of a capacitor is influenced by the surface area of the electrodes, the dielectric constant (E) of the surrounding material, and the distance between the electrodes.
When the distance between the electrode probe and the electrode wall is fixed, and the level of the measured fluid rises, the surrounding air or gas is replaced by the fluid. This change alters the electrostatic capacitance, which is directly related to the fluid level. The device detects this change in capacitance and outputs it as an upper or lower limit alarm signal, allowing for effective monitoring of fluid levels.
 

More details

Displacer Type — HM-30 & 90 Series

The HM-30,90 Series is a robust solution for water level management, designed to operate atop tanks by utilizing buoyancy from a displacer and spring tension. Its ON/OFF contact signal functionality allows for effective alarm and control during water supply or drainage processes. Notably, its solid structure enables operation under high temperature and pressure conditions. Additionally, the series offers two variants—general type and explosion-proof type—catering to specific application needs. This versatility makes it an excellent choice for various industrial environments
 
Principle of Product Measurement using Displacement:
The HM-30,90 Series uses Archimedes' principle, which states that an object placed in a liquid becomes lighter by the amount of weight it displaces, in its detection unit. The buoyancy of the Displacer is combined with the spring, and when the liquid level rises, the buoyancy increases and the Displacer is displaced. The displacement of the Displacer moves the core, which is output to the contact point by the switch mechanism.
 

 

More details

Electrode Type — HE-Series

HE-Series electrode-type liquid level detector are quite useful for monitoring liquid levels in various industrial settings, providing real-time feedback to help manage tank levels effectively.
By using multiple electrodes, It establish upper and lower limit alarms, ensuring safety and preventing overflows or dry-running conditions. This makes them a valuable tool in maintaining process efficiency and safety.
 
Principle of Product Measurement using Conductivity:
The HE-Series operates on the principle of conductivity, which is a key feature for liquid level detection. When the liquid level rises or falls, it makes contact with the electrode rods, allowing current to flow between them. This change in conductivity triggers the control unit's relay, signaling whether the liquid level has reached the set upper or lower limits.
This setup is essential for automating processes and ensuring safety in various applications.
 
 
 
 
 

More details

Float Type — HR-66 Series

The HQ-66 Series is an excellent solution for liquid level control, especially in water treatment plants. Its quick float type design allows for reliable detection of liquid levels, making it simple to use and maintain.
The straightforward structure is beneficial in industrial settings where efficiency and ease of operation are key. By controlling liquid levels, the HQ-66 helps ensure optimal functioning of water treatment processes, contributing to overall system reliability and safety.
 
Principle of Product Measurement using Mercury Switch:
The HQ-66 Series uses a mercury switch that activates when the float moves due to buoyancy changes in the liquid.When the float rises or falls, it triggers the mercury switch to output a contact point, allowing for precise level detection.
The ability to set multiple detection positions means you can easily configure it to control both upper and lower limits, making it highly versatile for various applications in water treatment and other industrial processes. This feature helps maintain optimal liquid levels, ensuring safety and efficiency.
 

 

More details

Capacitance Type — HCC/HPC-95P Series

The HCC/HPC-95P Series is an integrated type electrostatic capacitance level switch designed to detect the presence or absence of measured objects, such as liquids or powders, by measuring changes in electrostatic capacitance within the tank. This versatile device can be installed on the side or top of the tank in various configurations and features an alarm function for upper or lower level limits. Depending on the specific application requirements, the series offers both a general type (HCC-95P Series) and an explosion-proof type (HPC-95P Series) to ensure safety and effectiveness in different environments.
 
Principle of Product Measurement using Capacitance:
The principle of measurement for these level switches is based on capacitance. The capacitance of a capacitor is influenced by the surface area of the electrodes, the dielectric constant (E) of the surrounding material, and the distance between the electrodes.
When the distance between the electrode probe and the electrode wall is fixed, and the level of the measured fluid rises, the surrounding air or gas is replaced by the fluid. This change alters the electrostatic capacitance, which is directly related to the fluid level. The device detects this change in capacitance and outputs it as an upper or lower limit alarm signal, allowing for effective monitoring of fluid levels.
 
 

More details

Capacitance Type — HCC-95T Series

The HCC-95T is a separate capacitance type level switch device that can be installed on the top or side of a tank. It converts the intrinsic permittivity of the measured liquid into an electrostatic capacitance value, allowing it to accurately measure and detect the water level inside the tank. The device then outputs this information as a 2-wire loop current, making it easy to integrate into existing control systems.
 
Principle of Product Measurement using Capacitance:
When the air surrounding the electrode probe is replaced with a different dielectric (measured object), the capacitance value changes according to the permittivity of the medium (measured object). When the electrode probe contacts the measured object, the capacitance value increases and the output current changes. At this time, the changing current signal is measured through the I-Control Unit (or directly connected to the PLC), and the relay is operated accordingly to detect the status as a contact output.
 

 

More details

Float Type — HR-95 Series

The HM-95 Series is a robust and versatile solution for liquid level monitoring. Installed at the top of a tank, it uses buoyancy from the float to detect changes in liquid levels. Its alarm function during water supply or drainage, along with the ON/OFF contact signal, makes it essential for process control and safety.
The sturdy structure is a significant advantage, especially for applications involving high temperatures and pressures. Additionally, having both a general type and an explosion-proof type allows for flexibility in various environments, ensuring it can meet specific safety and operational requirements.
 
Principle of Product Measurement using Buoyancy effect:
The HM-95 Series operates by utilizing the buoyancy effect on the float, which is displaced as the liquid level changes. This displacement moves the core of the device, triggering the switch mechanism that outputs a contact signal.
This mechanism is crucial for providing accurate liquid level monitoring and alerts in various processes, such as water supply and drainage. The design ensures reliable operation, even in demanding conditions, making it a great choice for industrial applications.
 

 

More details

Float Type — HQM-77 Series

The HQM-77 Series controls various liquid levels in industrial sites. In particular, it is widely used for liquid level control in water treatment plants. It is a quick float type level switch designed with a simple structure and easy use.
 
Operation Principle
The HQM-77 Series operates the micro switch (Micro S/W) built into the float to output a contact point when the float moves up and down due to buoyancy. The HQM-77 Series can set multiple detection positions to set or control the upper and lower limit of the level.
 

 

More details

Float Type — HR-50 Series

The HR-50 Series is a level switch that operates using a reed switch and a magnet and can be installed on top of various storage containers to detect multiple contact points. It has a solid structure and high reliability, so it can be widely used in industrial fields.
 
Operation Principle
The HR-50 Series has a float manufactured to match the specific gravity of the measured object. When the float moves up and down to match the liquid surface due to buoyancy, the magnet inside the chamber operates the reed switch installed outside the chamber to generate a contact point. Multiple detection positions can be set to provide upper and lower level alarms or control.
 

 

More details

Float Type — HM-90S Series

The HM-90S Series is a device that is installed on the side of a tank and operates on the buoyancy received from the float. It is used in a process that performs an alarm function when supplying or draining water with an ON/OFF contact signal. It has the advantage of being sturdy and being able to be used at high temperatures and high pressures. The product is available in two types, a general type and an explosion-proof type, depending on the application.
 
Operation Principle
The HM-90S Series has a float that is displaced by buoyancy according to the change in liquid level. The displacement of the float moves the core and is output to the contact point by the switch mechanism.
 

 

More details

Float Type — HM-12(10) Series

HM-12(10) Series is installed on the side of the tank and is used in the process of performing an alarm function when water is supplied or drained as a detector with an ON/OFF contact signal. This detector has the advantages of a solid structure and long life. The product is available in two types: general type and explosion-proof type depending on the application.
 
Operation Principle
The HM-12(10) Series is an instrument that operates using the force of repulsion between magnets. When the float rises according to the change in liquid level, the shaft magnet connected to the float repel the holder magnet of the housing, thereby operating the microswitch. The contact point can be used as an upper and lower limit alarm for the level.
 

More details

Float Type — CS-1000

CS-1000 is a Float type Level Switch, which detects the water level inside the tank and has a contact signal of ON/OFF, and is used in the process of performing alarm and control functions during water supply or drainage.
This detector has a solid structure, excellent product reliability, and long lifespan. It
is mainly used in petrochemical plants and wastewater treatment plants, and is used when the contents are liquid.
 
Operation Principle
CS-1000 is installed on the side of the tank, and the float moves accordingly when the water level inside the tank is supplied or drained.
When the float is horizontal, there is no contact, and when the float moves according to the water level, the contact appears.
The contacts are classified into HIGH alarm and LOW alarm.
 
 

More details

Electrode Type — HE-1S Series

HE-1S Series is a reliable choice for monitoring liquid levels. As an electrode-type liquid level detector, it's designed to be installed at the top of a tank, providing effective detection of liquid level changes.
By using electrodes, it can accurately sense when the liquid reaches specific levels, which is crucial for process control, safety, and preventing spills or dry conditions.
 
Principle of Product Measurement using Conductivity:
The HE-1S Series utilizes the principle of conductivity to effectively monitor liquid levels. When the liquid level changes and makes contact with the electrode, the conductivity between the electrode and the tank is established. This triggers the control unit's relay, which then detects the position of the liquid level.
This mechanism is essential for applications where precise liquid level monitoring is crucial, ensuring safety and efficiency in operations.
 

 

More details

Magnetic Float Type — HR-10 Series

The HR-10 Series is an instrument that operates using reed switches and magnets and can be applied to various storage containers. It can be widely used in all industrial fields and has high reliability and long life.
 
Operation Principle
The HR-10 Series has a float manufactured according to the specific gravity of the measured object. When the float moves up and down in the same direction as the liquid surface due to buoyancy, the magnet built into the float operates the Reed S/W to generate contact. Multiple detection positions can be set to set upper and lower level alarms or control.
 
 

More details

Magnetic Float Type — HR-10L Serie

The HR-10L Series is a product that outputs contact points when used with a Level Gauge (HLG-100F). The contact point location can be changed in a BAND format and it has high reliability and long lifespan by using Reed S/W.
 
Operation Principle
When the float of the level gauge (HLG-100F) moves up and down to the same level as the liquid due to buoyancy, the magnet built into the float operates the Reed S/W built into HR-10L to generate a contact point.
 
 

More details

Magnetic Float Type — HR-30 Series

The HR-30 Series is an instrument that operates using a reed switch and a magnet. It can be applied to various storage containers including chemicals with high corrosion resistance, and can be widely used in all industrial fields. It has high accuracy and long lifespan.
 
Operation Principle
The HR-30 Series is a float manufactured according to the specific gravity of the measured object. It moves up and down in the same way as the liquid surface due to buoyancy, and the magnet built into the float operates the Reed Switch to generate a contact point. Multiple detection positions can be set to set upper and lower level alarms or control.
 

 

More details

Paddle Type — HLV-Series

HLV-Series is used in the process of detecting the level inside the tank and performing alarms according to the user's purpose and contents.
This detector has the advantages of a solid structure, excellent product reliability, and long life. It
is mainly used in cement processes, etc., and is used when the contents are powder.
 
Operation Principle
When the HLV-Series is powered on, the motor rotates, rotating the shaft and blades that are connected together.
If the measured powder in the container does not touch the rotating blade, the motor rotates without load and the micro switch is in the “OFF” state.
If the contents touch the rotating blade, the motor is configured as an eccentric shaft, so it falls on the micro switch and
the motor presses the micro switch for contact on the opposite side, turning the switch from the “OFF” state to the “ON” state, thereby detecting the measured powder in the container.
 

 

More details

Pressure — HP-1A

HP-1A is a Pneumatic Level Switch, especially suitable for high viscosity fluids, and its small size makes it easy to detect liquid levels in containers of small mechanical equipment.
 
Operation Principle
As the water level increases, air pressure is transmitted to the air room inside the switch unit, and the diaphragm located above it moves, operating the micro switch, which outputs the corresponding contact point to alarm and control the level.
 

 

More details

Thermal Mass Type — HTML-S Series

The HTML-S Series is installed on the top or side of a tank to detect the presence or absence of contents.
 
Operation Principle
HTML-S consists of a Reference Sensor and an Active Sensor, each of which uses a Reference RTD and an Active RTD.
The Reference Sensor measures the temperature of the fluid, and the Active Sensor has a heating wire attached to it that measures a temperature higher than the temperature of the fluid.
When the fluid is detected, the temperature of the Active Sensor drops, forming a temperature difference ?T between the Reference Sensor and the Active Sensor.
The measured ?T is converted to ?R and output to the switching contact.
 

 

More details

Radio Frequency Type — HPC-96RF Series

This is an integrated RF Type Level Switch installed on the top or side of a tank to detect the presence or absence of a substance to be measured.
In particular, the HCC-96RF-S is a product that has resolved the malfunction phenomenon caused by build-up of electrically conductive substances at the sensing area during measurement by using “Guard Technology phase shifting.”
 
Operation Principle
When the object to be measured comes into contact with the sensor, the signal flowing from the detection electrode to the ground is compared with the reference signal.
Since all objects to be measured have their own dielectric constant that is different from that of air, the impedance of the signal circuit changes when the object to be measured comes into contact with the probe. This change causes a phase change in the RF signal, and the phase difference between the detection signal and the reference signal operates the thrust circuit to detect the presence or absence of the object to be measured.
 

 

More details
Back To Top

Send Enquiry