LABOMAs a key measuring equipment in industrial process control, the installation quality of the Lambertian tube pressure gauge directly affects the measurement accuracy and equipment life. The following provides an explanation of the entire process from installation preparation, location selection, connection construction to acceptance and commissioning, combined with practical scenarios to provide operational guidelines.

1、 Preparation before installation

Equipment verification
Before installation, the pressure gauge needs to be calibrated to ensure its accuracy meets the design requirements. For example, for the pharmaceutical industry, it is necessary to meet±0.2%FSFor precision standard scenarios, a standard pressure source needs to be used for calibration.

Material Preparation
Select sealing components based on the characteristics of the medium: Do not use oil immersed gaskets when measuring oxygen, and avoid using copper gaskets when measuring acetylene or ammonia. At the same time, it is necessary to prepare threaded joints, sealing gaskets, thread sealant, as well as tools such as wrenches and screwdrivers.

Environmental Assessment
The installation location must meet the ambient temperature requirements-40℃to60℃Relative humidity≤80%The conditions should be kept away from radiation sources, strong vibration areas, and electromagnetic interference sources. For example, when installing near a chemical reactor, it is necessary to ensure that the instruments are kept in contact with the high-temperature reaction zone0.5Distance above meters.

2、 Installation location selection

Requirements for pressure measuring points
The pressure point should be located in the straight flow section of the medium, avoiding positions such as bends and tees that are prone to eddy currents. The specific principles include:

When measuring liquid pressure, the pressure measuring point is located on the lower side of the cross-section of the pipeline45°Within the range, avoid gas residue;

When measuring gas pressure, the pressure measuring point is located on the upper side of the pipeline cross-section45°Within the scope, prevent the accumulation of condensate;

When measuring steam pressure, the pressure measuring point is set at the upper half of the pipeline and at the horizontal centerline0°-45°Angle area, reducing the impact of steam condensation.

layout optimization
The instrument centerline should be perpendicular to the pressure centerline of the tested equipment, and the inclination angle of the dial should not exceed±5°Ensure that the readings are clear. For heights exceeding2The installation point for rice needs to be selected150mmor200mmDiameter dial, equipped with anti glare light shield.

3、 Connection construction

Pipeline pretreatment
Before connection, the inner wall of the pipeline needs to be cleaned to remove impurities such as burrs and welding slag. The inner diameter of the pressure tube is controlled within6-10mmThe length shall not exceed50Meter, horizontal section needs to be maintained1:10-1:20The slope. For example, when measuring liquid media, the pressure tube should be inclined towards the instrument direction; When measuring gas media, the pressure tube should be inclined towards the pressure tapping port.

Sealing construction
Apply high-temperature resistant thread sealant to the threaded joint, tighten clockwise until the handwheel cannot rotate, and then tighten with a wrench1/4-1/2Circle. After the connection is completed, an air tightness test is required. Apply soapy water to the interface and observe3A minute without any bubbles is considered qualified.

protective measures

When measuring high-temperature media, install a condenser ring orUCurved pipe;

When measuring corrosive media, a buffer tank filled with isolation liquid is installed at the front end;

When measuring pulsating pressure, install a damper or orifice plate in front of the instrument.

4、 Acceptance and debugging

static check
Confirm that the instrument is securely installed without tilting or shaking. Check whether the accessories such as shut-off valves and drain valves are installed properly, and whether the waterproof measures for electrical interfaces are complete.

dynamic testing
Slowly increase the pressure to the range25%、50%、75%、100%Maintain each pressure point2Minutes, record the deviation of the displayed value. For accuracy requirements±0.15%FSIn such situations, a digital pressure calibrator should be used for comparison.

zero point calibration
Under no pressure, adjust the zero position screw of the movement to reset the pointer to zero. For instruments with electrical output, calibration is required simultaneously4-20mAZero point and fullness of the signal.

Record archiving
Record initial installation parameters (such as ambient temperature, medium density), calibration data, and installation diagrams, and establish equipment files. For easily condensable media, a weekly sewage maintenance plan needs to be developed.

5、 Precautions

It is prohibited to install instruments directly at the valve or pump outlet, and at least5Double diameter straight pipe section;

Special packaging boxes should be used during transportation to avoid deformation of the elastic components caused by impact on the instruments;

Regularly inspect the appearance of the instrument and immediately stop using it if cracks or stuck pointers are found on the instrument panel.

By following the above installation specifications, it can be ensured thatLABOMThe Langbo Boden tube pressure gauge achieves long-term stable operation under complex working conditions, providing reliable data support for industrial process control.