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Dongguan Company

Add: Xinhe Management of 

area, Wanjiang District, 

Dongguan city, Guangdong

 province, China

Tel: +86 769 23388229

Fax: +86 769 23388227

Mobile phone:

       Homlin :  +86 135 5970 0919

       Leon      : +86 136 8898 5187


Dongguan Tianan Office

Rm. 1117, Building A1, Tianan 

Cyber Park, No. 1, Huangjin Road,

 Nancheng District, Dongguan, 

Guangdong, China (Mainland)

Tel: +86 769 23388225

Fax: +86 769 23388227

Mobile phone:

Connie: +86 137 1188 8650

Shelly:+86 136 8898 4470

       Shanghai Company

       Add: Building B 4-3, No.398, 

Jinglian Road, Minhang District,


Tel: 021-54399880-15

Fax: 021-64549471-12

HZ-4511 Automated pavement longitudinal profile analyzer
    Measured flatness index: the flatness of the international roughness index (IRI) standard deviation (σ) observation score value (RN) plus or minus to the height difference of the cumulative value of the absolute height (height difference) greater than the high points of a given distribution of ride qualityindex (RQI). Output: various flatness index (above) the whole pavement longitudinal profile curve and the sample point height (height difference) data a variety of flatness index distribution map road longitudinal profile slope (slope).


Machine Summary:

Measured flatness index: the flatness of the international roughness index (IRI) standard deviation (σ) 

observation score value (RN) plus or minus to the height difference of the cumulative value of the

absolute height (height difference) greater than the high points of a given distribution of ride qualityindex 

(RQI). Output: various flatness index (above) the whole pavement longitudinal profile curve and the sample

 point height (height difference) data a variety of flatness index distribution map road longitudinal profile 

slope (slope).

  • Technical Parameter
  • Feature / Function
  • Standard
  • Main parts
  • Software / Controller

Technical Parameters:


HZ-4511 Automated pavement longitudinal profile analyzer


one person

Operating speed

Slow walk

Calculate the road length


Sample interval


Measurable pavement wavelength range

0.25 m ~5000 m

Program power

aplly to the power of notebook computer


Field-analysis of data and print results

Operating ambient temperature

-40℃ ~80℃

Correlation coefficient

R2> 0.95

Measured profile height difference of resolution

< 0.05 mm

Distance detection resolution

< 12.5 cm

Machine size


Gross weight


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