Calibration of Pressure Gauge and Torque Wrench

In the pressure and torque calibration laboratory based on the scope of certification and national and international standards of pressure balance calibration, pressure transmitter calibration, barometer calibration, pressure switch calibration, pressure stability calibration (pneumatic and hydraulic), pressure calibration Valve calibration Confirmation and testing of valves by water and hydrostatic pressure or by air and pneumatic pressure, calibration of torque meters and calibration of crack testers inside the company, and measured and calibrated at the customer’s site by experienced and trained experts.

Pressure and torque calibration:

There are many techniques for measuring pressure and vacuum. The devices used to measure pressure are called pressure gauges or vacuum gauges. Measuring instruments, which measure pressures close to atmospheric pressure, are commonly referred to as manometers. Also, in most cases, hydrostatic devices in which there is a column of liquid are also referred to as manometers. Pressure is not an absolute quantity, so in measuring pressure, its value is always determined relative to a reference pressure. For example, the tire pressure of a car is measured relative to atmospheric pressure.

Sometimes the pressure is measured relative to the vacuum pressure. Vacuum pressure is usually divided into three steps: low vacuum pressure, high vacuum pressure and very high vacuum pressure (up to about 11-10 bar). But it should be noted that reaching an absolute vacuum (zero millibar) is very difficult. Based on the basis for measuring pressure, it is considered in the following three ways: Absolute flux: is the pressure that is measured based on a complete vacuum and the complete vacuum is considered as a measurement reference or zero base. Measuring pressure: It is a pressure that is measured based on atmospheric pressure. Atmospheric pressure is considered as a reference or zero reference.

Pressure difference: is the pressure difference between two points, so: Measurement pressure is equal to absolute pressure minus atmospheric pressure or absolute pressure is the algebraic sum of absolute pressure and atmospheric pressure: Absolute Pressure = Gauge pressure + atmospheric pressure. Pressure Measuring Instruments Many devices for measuring pressure have been invented with their own advantages and disadvantages. It differs in terms of measurement range, sensitivity, dynamic response and cost, design and technical specifications. The oldest means of measuring pressure is the liquid column manometer (a vertical tube filled with mercury) invented by Torricelli in 1643. The U-shaped liquid column manometer was also invented by Christian Huygens in 1661. Types of pressure measuring devices are: hydrostatic, piston, liquid column, mechanical, thermal conductivity and ionization.

  • Calibration of Diaphragm Sealed Pressure Gauges
  • Calibration of Electric Contact Gauges
  • Calibration of Magnehelic Differential Pressure Gauges
  • Calibration of Surface Profile Gauges
  • Calibration of Pcwi Digital Surface Profile Gauges
  • Calibration of Pcwi Dial Gauge for Testex Tape
  • Calibration of Defelsko Positector SPG Series Surface Profile Gauges
  • Calibration of Dakota Vx Ultrasonic Velocity Gauge
  • Calibration of Center 307 Digital Thermometer Temperature Gauge

Torque Wrench Calibration:

Torque wrench is one of the most important and common tools used in car repairs and production lines. Torque meters range from 0 to 2,000 Nm and are available in 1.4, 3.8, 1.2, 3.4 and 1 inch drives. Trackers generally have the same mechanism and must be maintained with the utmost effort. Under no circumstances should a torque be used higher than its maximum torque. A cracker should be calibrated at least every 12 months or approximately after every 5,000 uses. The more accurate calibration method has a special standard that requires special precision instruments. Laboratories that are licensed by the Iranian Organization for Standardization and Industrial Research to calibrate this instrument are able to perform calibration operations on the turret in standard environmental conditions. But in addition to these two very important points, the opposite points that are presented visually are also of great importance.