Cangzhou Huayun Experimental Instrument Co., Ltd.

Heidi Cangzhou Huayun Experimental Instrument Co., Ltd. is a professional manufacturer of concrete impermeability meters, providing users with high-quality, standard cement testing instruments, concrete testing instruments, construction instruments, and highway instruments. Welcome to inquire about the price of concrete impermeability meter.
Black-type automatic pressure-regulating concrete impermeability meter
Digital display concrete impermeability meter, concrete permeability meter is mainly used for concrete impermeability performance and testing and determination of impermeability labels. At the same time, it can also be used to measure the air permeability and quality inspection of building materials, so it has been widely used by departments related to production, construction, design, teaching and research, etc.
Concrete is an artificial stone that is widely used in construction today. For certain buildings, such as hydraulic construction, underwater, underwater, underground and other construction projects, the building is required to have special properties, so-called impermeability. Performance refers to the ability of the materials used in the structure to resist the penetration of water and other liquid (light oil, heavy oil) media under pressure.
Main technical parameters
, maximum working pressure
, working mode automatic constant pressure (digital display type automatic constant pressure and automatic pressure increase)
, several test pieces can be made at one time
/> , Trial mold geometric dimensions (also called main mold)
Diameter of upper mold cavity
Diameter of lower mold cavity
Height
, Plunger pump parameters
Flow rate
, Motor
Power
Power supply
, Dimensions
, Quality
Main working principle and its mechanism (see attached picture 1)
Concrete The anti-permeability meter uses the principle that the pressure in a sealed container is equal everywhere (the water level difference is ignored), uses a water pump to deliver pressure to the entire system, and realizes the pressure of water from bottom to top through the electric contact pressure gauge or pressure controller. An instrument that osmotically presses the specimen installed in the test mold to measure the impermeability performance of the specimen and calculate its impermeability grade. The molded concrete impermeability meter mainly consists of a box and a workbench, which are made of stainless steel panels. It is equipped with a mold base and bolts for installing the test mold.
The pressure supply system consists of a motor, a power box, a water pump, a water bag, a safety valve, a pipeline, etc. The motor is used to provide a power source to the system, and the power box is used to convert the power source provided by the motor into reciprocating motion. The power is provided to the water pump. The water pump is used to provide water pressure to the entire system. The water bag is used to stabilize the water pressure of the supply system and provide a water pressure source. The power box is used to convert the power source provided by the motor into a reciprocating motion. The safety valve is installed in the center of the water bag. The function of the safety valve is to ensure that the system pressure is not greater than the operating console. It is mainly composed of electrical control and control valves.
The electrical control part of the concrete impermeability meter (see attached picture 2) is composed of a red and green button switch and a pressure gauge with only electric contacts.
The green button is the start switch, the red button is the stop switch, and the electric contacts The pressure gauge is used to control the pressure of the pressure supply system to maintain the range you need. When the pressure pointer reaches the upper limit, the water pump stops working. Due to the penetration of the specimen and other reasons, the water pressure drops, and the pointer rotates counterclockwise, leaving the upper limit position until When the lower limit is reached, the water pump restarts and the water pressure rises to the upper limit control valve. Its opening and closing are the same as those of ordinary valves, that is, clockwise rotation means opening, and counterclockwise rotation means opening. Each valve controls a test mold correspondingly.
The electrical control part is connected by a combination switch and a pressure sensor. consists of controllers. The combination switch controls the power supply of the impermeability meter. The position is off and the position is on. The controller controls the pressure of the pressure supply system to keep it within the range you need. For details on the operating instructions of the controller, please refer to the appendix "Operation Instructions for the Pressure Controller of the Digital Impermeability Meter"
Installation and use of the concrete impermeability meter
, preparation
, place the impermeability meter on a flat surface , Based on a solid indoor foundation,
, close the water release and pressure relief valve located on the lower right side of the box
, open a control valve
, for the first time, pour water into the box, open the control valve, and start the power supply , until the water in the mold base overflows in order to discharge the air in the system.
, close the control valve
, test piece production and installation
, test piece forming and maintenance, use the forming mold (also called the auxiliary mold) to make the shape according to the material ratio required by the design, and then press be protected in accordance with the specifications of the Ministry of Commerce or international standards.
Dry the surface of the maintained specimen, and then apply melted sealing material (fire paint or sealing wax) on its side. Pay attention to both ends of the specimen. It is strictly prohibited to apply sealing material.
, heat the test mold to ℃, then load the test piece coated with sealing material into the mold cavity, and then press the test piece into the test piece on the press (screw press or borrow a laboratory pressure testing machine) In the mold and cooled to normal temperature, it is best to use the multi-functional demoulding machine produced by our factory, which can not only load, demould, but also split the specimen to observe the depth of water penetration.
, Install the test mold with the loaded test piece on the workbench of the impermeability meter, and tighten the screw caps evenly
, Turn on the power, turn on the two red signal lights, and set the upper limit pointer of the electrical contact pressure gauge Adjust the lower limit pointer so that it can be close to it but not in contact with it at the same time (about smaller than the upper limit pointer), then press the green button to turn on the power. At this time, the water pump starts to work. The pointer of the electric contact pressure gauge will rotate clockwise as the water pressure rises. Pay attention to the pressure rise. Whether it is normal and whether there is water leakage in the system. If there is any abnormality, it should be eliminated before entering the test.
Open the control valve and send water pressure to the corresponding test body. Pay attention to whether there is leakage from the bottom of the test mold. If there is leakage, tighten the compression nut of the corresponding part.
After entering the normal test, increase the working pressure every hour and observe whether there is water seepage on the end face of the specimen at any time. If there is water seepage, close the corresponding control valve.
When pressure water leaks out of the end face of one of the test pieces, the test can be stopped and the water pressure of ten milliseconds is recorded as the basis for calculation.
After the test, cut off the power supply, open the water release pressure relief valve, reduce the system pressure to zero, remove the test mold,
Press out the test piece from the test mold, and clean the test mold and mold base. , Apply anti-rust oil for reuse
Calculation of concrete impermeability meter results
The concrete impermeability mark is expressed by the maximum water pressure when four of the six test specimens in each group do not see water penetration. The calculation formula is the pressure when water seepage occurs in the third of the six specimens with the impermeability mark
. If the pressure is increased for hours and the water seepage still does not exceed 0, the concrete impermeability mark should be greater than or equal to, that is
/>Maintenance and maintenance
, Requirements for the working environment: the ambient air temperature is ℃℃ relative temperature<, do not work in an environment containing corrosive gas for a long time
, the water source should be clean and free of impurities
. The power box oil has been added before leaving the factory. In the future, open the rear box cover and power box cover every six months to replace the mechanical lubricating oil of No. > Check once every six months whether there is water at the bottom of the power box (this work can be done at the same time as changing the oil), and determine whether the water pump seal is damaged. If damaged, it needs to be replaced.
If the ambient temperature is lower than ℃, the water needs to be drained. The pressure relief valve drains all the water sources in the system, otherwise the parts of the system will freeze and damage the system parts.
Troubleshooting of concrete impermeability meter
The following solutions should be implemented after eliminating leakage at the interfaces of pipelines, pumps and valves
If the system pressure takes a long time to start, it can be judged that there is something in the pipeline For air, please refer to the exhaust air after the first use. If there is no pressure in the system, it is usually caused by the wear of the sealing ring in the water pump.

Hengtai Welcome to Cangzhou Huayun Experimental Instrument Co., Ltd., our company also The products supplied include concrete curing boxes, type concrete drilling core machines, type concrete impermeability meters, mortar penetration meters, type single horizontal shaft concrete mixers, concrete self-falling mixers, concrete double horizontal shaft mixers,/square meters of concrete Vibrating table, electric compaction instrument, various plastic/cast iron test molds, asphalt copper figure eight molds, Los Angeles partition type abrasion testing machine, concrete carbonization test chamber, /type standard constant temperature and humidity curing box, molded brick freeze-thaw test chamber , low temperature test chamber (vertical, horizontal), type Ray's boiling chamber, type aging test chamber, type digital display constant temperature water bath, type cement rapid curing box, concrete accelerated curing box, brick bursting cooking box, brick pan Frost test chamber, type electric blast drying oven, type temperature and humidity control test chamber, small standard maintenance room temperature and humidity automatic controller, large standard maintenance room fully automatic temperature and humidity control equipment (air, water cooling), waterproof membrane equipment , pressure testing machine series, asphalt testing instruments, commercial concrete mixing testing equipment, etc.
Cangzhou Huayun Experimental Instrument Co., Ltd. specializes in the production and development of concrete and mortar impermeability meters, curing boxes, curing rooms, cement testing instruments, asphalt testing instruments , several major series of geotechnical testing instruments. It has now formed a high-tech entity integrating scientific research and development, production and operation, facing the market in an all-round way and operating in a variety of ways. Our factory has strong technical force and a group of professional and technical personnel with many years of production experience. Our scientific management and strict system ensure the excellent quality and good reputation of our products.

Agent and main product series
, universal machine, pressure testing machine, material testing machine (tension, pressure, impact, torsion, fatigue, wear resistance)
, cement, Concrete and mortar testing instruments
, geotechnical testing instruments
, highways, railways, bridges, tunnels, subgrade pavement testing instruments
, asphalt and asphalt mixture testing instruments
, waterproofing membranes Testing instruments
, engineering non-destructive testing instruments, measuring, surveying and mapping instruments, building energy saving, ceramics, pipe instruments, metal and coating testing instruments
, door and window testing, air quality and environmental testing instruments
, Imported instruments and equipment
, standard sand for cement strength testing, special sand for sand filling
, glass instruments, chemical reagents, sieves, balances and other supporting instruments are complete
Corporate Culture
The spirit of enterprise is to be sincere to people, to be skilled in technology, to think first, and to be trustworthy in business
Core values Integrity, integrity, open communication, continuous innovation and co-creation of value
Company mission: to develop more advanced products through continuous innovation and accumulation of knowledge products to create more value for customers.
Customer philosophy: Adhere to honesty, solve practical problems for customers, and meet customer needs. This is our development direction.
Business philosophy: brand strategy, online marketing, market development, and creating a win-win situation
Quality policy management innovation, honesty, continuous improvement, and providing customers with qualified testing equipment and satisfactory services
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