Tianjin Highway Testing Instruments New Laboratory Equipment

        I. Purpose

This machine is manufactured in accordance with the test requirements of JC/T960-2022 "Automatic Pressure Testing Machine for Cement Mortar Strength". It adopts microcomputer control and features control modes such as constant test force, constant stress, and a dual-station test space with test force holding. The computer enables functions including on-screen display of test data and curves, disk storage, and database management. When connected to a printer, it can output test data reports. The product is characterized by high precision, high reliability, and ease of operation.

II. Main Technical Parameters

Test Force Measurement Range: 4%-100%

Applied Test Force Error: ±0.5%

Input Voltage: 380V

Motor Power: 0.75KW

Overall Dimensions (mm): 1220*510*1280mm

Host Weight: 300kg

II. Installation of the Testing Machine

    During installation, ensure the testing machine is level (levelness≤0.2/1000). Use a0.1/1000 frame level to measure the plane of the lower platen. If the horizontal or vertical level exceeds the specified limit, correct it by adding shims under the base plate, then tighten the anchor bolts.

Then connect the power cable. The machine's electrical system should have a grounding safety protection device. The power voltage fluctuation should not exceed ±10% of the rated value.

III. Maintenance and Care

1. The testing machine should be installed in a clean, dry, uniformly temperatured environment, free from vibrations and corrosive gases.

2. Keep the testing machine clean. Regularly oil parts without protective coatings to prevent rust.

3. Change the oil every six months to a year. During oil change, thoroughly clean the oil tank and oil filter. To clean the oil tank, pour kerosene into the tank, then drain it. Repeat this several times until clean, wipe the tank bottom with a towel, and then add clean hydraulic oil. If the hydraulic oil is found to be severely contaminated and unusable during normal use, replace it immediately to prevent accelerated wear of hydraulic components and potential impact on the accuracy of force values.

Hydraulic oil specifications are recommended as follows based on ambient temperature:

(1) When ambient temperature is 10-20°C, use GB-443-84N46# (equivalent to 30# mechanical oil).

(2) When ambient temperature is 20-30°C, use GB-443-84N86# (equivalent to 40# mechanical oil).

4. When not in use, cover the machine with a plastic cover.