Product overview 

The RHF radar level measurement instrument outputs the 4～20mA analog signal, and the maximum measurement distance can reach to 70m. The new quick microprocessor is used to carry out signal analysis and processing at a higher rate, meeting very complicated measurement conditions of reaction still or solid bin. 

Product principle 

● Time 1: Produce the inceptive impulse; 

● Time 2: Advance downward along the horn antenna with speed C (velocity of light); 

● Time 3: The pulse is reflected when it meets the surface of the medium; 

● Time 4: The reflected pulse is received and recorded by the processor; 

● The time difference T between the pulse signal being transmitted and received; 

● Being directly proportional to the distance D from the datum plane to the surface of the medium: D＝CxT／2; 

● Datum plane of measurement: Thread bottom surface or flange sealing face; 

●A: Measuring range B: Low order C: Full order D: Blind area: 

● Ensure that the highest material level cannot enter the measurement blind area D at the moment of operation; 

Product features 

● The 26GHz transmitting frequency is used; 

● The field angle is small with energy concentration and stronger anti-interference ability with measurement accuracy and reliability greatly improved; 

● The measurement blind area is smaller and an excellent effect will be achieved for cannikin measurement; 

● The wave length is shorter and the measurement effect is better for small particle medium and tilted medium surface; 

● Sensitive measurement, fast refresh rate, small antenna size, simple installation of high frequency radar level meter, and solid and durable and maintenance-free; 

● Non-touching measurement, no wear or pollution and measurement of material level of liquid and solid medium; 

● Almost not influenced by temperature, pressure, water vapor, foam, dust and other complex working conditions; 

● The advanced microprocessor and unique echo processing technology are used and it's applicable to various complex working conditions; 

● The transmitted power is extremely low and it can be installed in various metal and non-metal containers with no harm to human environment; 

● The display screen with buttons makes it easy to set the parameters of the instrument. 

Product application 

It's mainly used for process tank, agitation tank, etc. of intermediate bunker, warehouse, hopper, storage tank, papermaking and pulp, water and sewage, food and drink and pharmacy in the industries (such as chemical engineering and petrifaction, thermal power generation, steel and metallurgy, mineral products and lithium battery new energy). 

Product parameters 

RHF-Z 

Application: Various strongly corrosive liquid ; 

Frequency range: 26GHz; 

Measuring range: 0～10m; 

Precision: ±5mm ; 

Medium temperature: -40～120℃; 

Process pressure: -0.1～0.3Mpa; 

Process connection: Thread and flange; 

Explosive-proof grade: Exia II CT6; Exd II CT6; 

Explosive-proof grade: IP67; 

Signal output: 4～20mA／HART (two-wire/four-wire) RS485/Modbus. 

RHF-X 

Application: Temperature and pressure resistant and slightly corrosive liquid ; 

Frequency range: 26GHz; 

Measuring range: 0～30m; 

Precision: ±3mm ; 

Medium temperature: -40～250℃; 

Process pressure: -0.1～4.0Mpa; 

Process connection: Thread and flange; 

Explosive-proof grade: Exia II CT6; Exd II CT6; 

Explosive-proof grade: IP67; 

Signal output: 4～20mA／HART (two-wire/four-wire) RS485/Modbus. 

RHF-C 

Application: Solid material level, process container, strong dust, 

and easy crystallization and moisture condensation occasions; 

Frequency range: 26GHz; 

Measuring range: 0～70m; 

Precision: ±15mm 

Medium temperature: -40～250℃; 

Process pressure: -0.1～4.0Mpa; 

Process connection: Thread and flange; 

Explosive-proof grade: Exia II CT6; Exd II CT6; 

Explosive-proof grade: IP67; 

Signal output: 4～20mA／HART (two-wire/four-wire) RS485/Modbus.

RHF-V 

Application: Solid material level, process container, strong dust, 

and easy crystallization and moisture condensation occasions; 

Frequency range: 26GHz; 

Measuring range: 0～70m; 

Precision: ±15mm ; 

Medium temperature: -40～250℃; 

Process pressure: -0.1～4.0Mpa; 

Process connection: Thread and flange; 

Explosive-proof grade: Exia II CT6; Exd II CT6; 

Explosive-proof grade: IP67; 

Signal output: 4-20mA／HART (two-wire/four-wire) RS485/Modbus.

RHF-B 

Application: Solid particle, dust and water conservancy project ; 

Frequency range: 26GHz; 

Measuring range: 0～30m; 

Precision: ±10mm ; 

Medium temperature: -40～250℃; 

Process pressure: -0.1～4.0Mpa; 

Process connection: Thread and flange; 

Explosive-proof grade: Exia II CT6; Exd II CT6; 

Explosive-proof grade: IP67; 

Signal output: 4～20mA／HART (two-wire/four-wire) RS485/Modbus. 

RHF-N 

Application: Sanitary liquid storage container and 

highly corrosive liquid container; 

Frequency range: 26GHz; 

Measuring range: 0～20m; 

Precision: ±3mm ; 

Medium temperature: -40～150℃; 

Process pressure: Normal pressure; 

Process connection: Flange; 

Explosive-proof grade: Exia II CT6; Exd II CT6; 

Explosive-proof grade: IP67; 

Signal output: 4～20mA／HART (two-wire/four-wire) RS485/Modbus.

Product model selection