上海荣计达仪器科技有限公司经营水泥实验仪器、混凝土实验仪器、公路土工实验仪器、干粉砂浆保温砂浆实验仪器、沥青防水材料实验仪器、油漆涂料实验仪器、无损检测等实验仪器。经营水泥实验仪器、混凝土实验仪器、公路土工实验仪器、干粉砂浆保温砂浆实验仪器、沥青防水材料实验仪器、油漆涂料实验仪器、无损检测等实验仪器。公司产品凭借过硬的质量、完善的售后服务、合理的价格各大院校、检测单位、建材企业、工程建设单位。在消费者当中享有较高的地位和良好的口碑，用户遍布国内近三十个省市、自治区，并远销国外，与用户建立了长期稳定的合作关系。公司实力雄厚，重信用、守合同。有健全的管理制度和完善健全的质量管理体系。并有反应迅速、服务周到的售后服务系统。我们将不懈努力、一如既往以优异的品质为客户服务。
Shanghai Rongjida Instrument Technology Co Ltd. specializes in operating laboratory equipment such as cement experimental instruments, concrete experimental instruments, highway geotechnical experimental instruments, dry mortar mortar thermal insulation mortar experimental instruments, asphalt waterproof materials experimental instruments, paint coating experimental instruments, non-destructive testing. Specializing in the operation of cement experimental instruments, concrete experimental instruments, highway geotechnical experimental instruments, dry mortar mortar thermal insulation mortar experimental equipment, asphalt waterproof material experimental equipment, paint coating experimental equipment, non-destructive testing and other experimental instruments. The company's products are sold well in universities, testing units, building materials companies and engineering construction units with excellent quality, perfect after-sales service and reasonable prices. It enjoys a high status and good reputation among consumers. The users are located in nearly 30 provinces, municipalities and autonomous regions in China, and are exported to foreign countries. They have established long-term and stable cooperative relations with users. The company is strong in strength, re-credit and abide by the contract. Have a sound management system and a sound quality management system. And there is a quick response and considerate after-sales service system. We will make unremitting efforts and continue to serve our customers with excellent quality.
一、产品简介：
容重测定仪用于现场测定原状砂和砾质土的密度。主要由有底盘，灌砂漏斗，容重瓶，阀门组成。结构坚固耐久，采用不锈钢材制成。
the product introduction:
The bulk density meter is used to determine the density of undisturbed sａnd and gravel soil on site. Mainly consists of a chassis, a sanding funnel, a bulk density bottle, and a valve. The structure is sturdy and durable, made of stainless steel.
二、技术参数：
★容砂瓶：4L；
★仪器尺寸：300 x 300 x 445mm （L x W x H）；
★重量：1.5Kg。
Second, technical parameters:
★ Sａnd bottle: 4L;
★ Instrument size: 300 x 300 x 445mm (L x W x H);
★ Weight: 1.5Kg.
三、使用说明：
★按灌砂法试验中挖坑的步骤依据尺寸好试坑，称试样质量，测定试样的含水率，
★向容砂瓶内注满砂，关阀门，称容砂瓶，漏斗和砂的总质量，准确至10 g。
★密度测定器倒置于挖好的空口上，打开阀门，使砂注入试坑。在注砂过程中不应震动。当砂注满试坑时关闭阀门，称容砂瓶、漏斗和余砂的总质量，准确至10 g，并计算注满试坑所用的标准砂质量，
★试样的密度（PO）＝取自试坑内试样的质量（MP）÷(注满试坑所用标准砂的质量（MS）÷标准砂的密度（PS）)。
★试样的干密度（Pd）=｛取自试坑内试样的质量（MP）÷（1＋0.01w1）｝/(注满试坑 所用标准砂的质量（MS ÷标准砂的密度（PS）)。
灌砂法容重测定仪计算公式
V、P。V＝m3×VW P＝m5/V
式中：V——测定器的容积，cm3
m3——灌满测定器所需水的质量（m2－m1）g
VW——不同温度下每克水的体积，cm3/g
P——标准砂密度，g/ cm3
m5——充满测定器所需砂的质量（m4－m1）g
Third, the instructions for use:
★ According to the steps of digging pits in the test of sａnd filling method, the test pit is based on the size, the mass of the sample is called, and the moisture content of the sample is determined.
★ Fill the sａnd bottle with sand, close the valve, call the sａnd bottle, the total mass of the funnel and sand, accurate to 10 g.
★ The density measuring device is placed on the excavated air opening, and the valve is opened to inject the sａnd into the test pit. It should not be shaken during the sａnd injection process. When the sａnd is filled with the test pit, the valve is closed, and the total mass of the flask, funnel and residual sａnd is said to be accurate to 10 g, and the standard sａnd quality used for filling the test pit is calculated.
★ Density of the sample (PO) = mass of the sample (MP) taken from the test pit (the mass of the standard sａnd used for filling the test pit (MS) the density of the standard sａnd (PS)).
★The dry density of the sample (Pd)={take the mass of the sample in the test pit (MP)÷(1+0.01w1)}/(the mass of the standard sａnd used for filling the test pit (MS ÷standard sａnd density (PS) ).
Sanding method bulk density measuring instrument calculation formula
V, P. V=m3×VW P=m5/V
Where: V——the volume of the measuring device, cm3
M3 - the mass of water required to fill the tester (m2-m1)g
VW - volume per gram of water at different temperatures, cm3/g
P——standard sａnd density, g/cm3
M5 - the mass of sａnd required to fill the tester (m4-m1)g
