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Home > Products > Level Measurement > Radar Level Sensors > RS485 Smart Digital Water Tank Radar Level Gauge

RS485 Smart Digital Water Tank Radar Level Gauge

Basic Info

Model No.: Radar HQF900 series, HQF900 series

Product Description

Holykell HQF900 series Pulse Radar Guided Wave Radar Level Transmitter

Product Description


Order Guide

1.What is your medium? Water, Solid, or other

2.Measure range? 5m, 10m, 20m or other

3.Output signal? 4-20mA or RS485

4.Other descrition about application is great helpful!


Quick View:


Casing window


The ground terminal

Stainless steel

Power Supply

DC 6 to 24V or 220VAC


Conductor cross section 1.0m

The output signal

4...20mA/HART (2 wires/4 wires)                                                                                               RS485/Modbus

Explosion proof grade:

ExibⅡCT6 Gb

Proof Grade


Fault signal

Constant current output; 20. 5mA 22mA

22mA  3.9mA 

The integral time

(0 ~ 50) s, adjustable

Blind area

the ends of the antenna

The maximum distance measurement

70 meters

Microwave frequency


Communication interface

HART communication protocol

The measurement interval

about 1 second (depending on the parameter settings)








Application:  All kinds of corrosive liquid

Measurement Span: 0 to 10 meters

Process Connection: Thread or Flanges

Medium Temperature Span:  -40~120℃

Process Pressure: -1Bar~3 Bar


B. HQF902

Application:   Temperature resistance, pressure resistance, slightly corrosive liquids

Measurement Span: 0 to 30 meters

Process Connection: G1-1/2'' Thread or Flanges

Medium Temperature Span:  -40~150℃

Process Pressure: -1Bar~40 Bar

Accuracy:   ±3mm


C. HQF903

Application:  Solid material, strong dust, easy to crystallization, condensation occasions

Measurement Span: 0 to 70 meters

Process Connection:  Multidirectional flange

Medium Temperature Span:  -40~250℃

Process Pressure: -1Bar~1 Bar

Accuracy:   ±15mm


D. HQF904 (Parabolic antenna)

Application: River, Water, Solid material, strong dust, easy to crystallization, condensation occasions

Measurement Span: 0 to 70 meters

Process Connection:  Multidirectional flange

Medium Temperature Span:  -40~250℃

Process Pressure: -1Bar~1 Bar

Accuracy:   ±15mm


E. HQF905

Application: Solid particles, powder

Measurement Span: 0 to 30 meters

Process Connection: Thread or Flanges

Medium Temperature Span:  -40~250℃

Process Pressure: -1Bar~40 Bar (Flat flange)

-1Bar~1 Bar (Multidirectional flange)

Accuracy: ±10mm


F. HQF906

Application:  Sanitary liquid storage container, strong corrosive container                                                           Measurement Span: 0 to 20 meters

Process Connection: Flanges

Medium Temperature Span:  -40~150℃

Process Pressure: -1Bar~1 Bar

Accuracy:   ±3mm






1:How long will you give me the reply?

we will contact you in 2 hours as soon as we can.
2:Could I get samples?
Yes,we have materials in stock to help you to get the samples as soon as we can.
3:How about the quality of the magnets?
We have a complete quality control system , all of our products will be fully pre-inspection by QC departments before shipping to you . We have the certification of ISO,CE and ROSH,we could send the certification test of our company to you.
4:How is the price?
As we believe the quality is the most important,we will provide the best quality Pressure Sensor we can with reasonable price.
5:Could you provide me the shortest lead time?
We have materials in our stock,if you really need,you can tell us and we will try our best to satisfy you.
6:Could I visit your factory?
Of course,if you need we will help you to visit our factory.
7:If I have paid,when will you help me to produce?
When we have received the money in our account,we will give you the receipt and arrange to produce immediately.

Contact us:
Mobile/Whatsapp: +86 18229481743
Skype: live:sales12_413
Sales12 at

Company Information




Product Categories : Level Measurement > Radar Level Sensors