ZN—2000Introduction to Surface Nuclear Moisture Density Meter

This instrument is jointly developed by Nanjing Institute of Water Resources and Nantong Zhongtian Precision Instrument Co., Ltd. It is a high-tech product with its own intellectual property rights. This instrument has the advantages of high measurement accuracy, non-destructive detection, and in-situ measurement. All key components are imported from the United States, ensuring stable measurement and accurate data. In terms of software functionality, it is superior to similar instruments both domestically and internationally, and has a high cost performance ratio. The mold production of the entire instrument ensures the uniformity and interchangeability of the instrument. And it has passed the provincial and ministerial level appraisal in August 2001.

This instrument is widely used in highways、asphalt pavementDetection and control of compaction degree and moisture content indicators during on-site construction of embankments, dams, railway subgrades, airport subgrades, etc.

ADisplay the required dry bulk density, wet bulk density, moisture content, moisture content, Proctor compaction degree, Mahalanobis compaction degree, etc. at once.

BHas transmission method, backscattering methodACWaiting for measurement function.

CThe software includes automatic self checking function, automatic standard counting and storage function, measurement mode and status display function, engineering number setting function, input and modification calibration constant function, moisture density measurement result compensation function, ditch measurement compensation correction function, thin layer density measurement function, measurement result storage function, automatic statistical fluctuation test function, automatic zero drift test function, automatic printing and output function, andPCMachine connected data download and processing function, radiation source attenuation display function, automatic calendar function, automatic monitoring and display of battery life, wired remote control and remote reading function, etc.

D: Radiation source usedCS137Used for detecting density and source intensity296MBqStainless steel seal;AM-BENeutron source is used to detect moisture and the intensity of the source1.48GBqUsing shielding materials such as boron and lead. According to the testing conducted by the provincial environmental monitoring unit, the radiation dose of the instrument during use and the radiation source inside the packaging meets national safety standards.

EThere are currently three models available for selection:a.ZN-2000AType refers to the ordinary type, equipped with a micro printer.b.ZN-2000BEquipped with wired remote control, remote reading function, and micro printer.c.ZN-2000CType, equipped with wired remote control, remote reading function, micro printer andPCMachine or laptop.

FMain technical parameters:

Density measurement range:1200-2700Kg/m³

Moisture measurement range:0-640Kg/m³

Density measurement depth: Transmission method:5-30cm Measurement Interval5cm

body's back break up Law:ACFile:5cm

BSFile:5-10cm

Density measurement error:±30Kg/m³

Moisture measurement error:±15Kg/m³

measure measure time Between:15In seconds60In seconds240Three levels in seconds

GCompliant with industry standards in China's water conservancy, transportation, railway, and other fields（SL48-94、SL53-94、JTJ059-95、TB/T10217-96、SL237-1999Etc.) and American material testing standards（ASTM、D2922、D2950、D3017、C-1040）

HCurrently at the Xining Railway Project Department of China Railway Fourth Bureau and China Railway Major Bridge,328Used in dozens of key projects such as the Hai'an section of the national highway and the Haifang highway, with good feedback information.

D.Main technical parameters:

ECompliant with industry standards in China's water conservancy, transportation, railway, and other fields（SL53-94、SL237-1999、SL275-2001、SL352-2006、JJGE60-2008、TB/T10217-96、TB10102-2010Etc.) and American material testing standards（ASTM D6938、ASTM D2950、ASTM C1040/C）

F.Usage: Currently in the Xining Railway Project Department of China Railway Fourth Bureau and China Railway Bridge Second Division328Used in dozens of key projects such as the Hai'an section of the national highway and the Haifang highway, with good feedback information.

G.The instrument adopts a dual shielding structure and has been tested by provincial health monitoring units. The radiation dose of the radiation source in use and packaging boxes meets national safety standards.