Best Blogs of Calibration and Instrumentation on Eurocaltech

The Industrial Platinum Resistance Thermometer (IPRT) is a reliable standard for temperature measurement and calibration. It has a resistance of 100 Ohms and is metal sheathed. IPRTs can be calibrated with uncertainties of 0.01 °C and 0.05 °C, making them suitable for many applications. Primary SPRTs can be calibrated to lower uncertainties, while secondary SPRTs are less prone to mechanical shock. Eurocaltech offers high-accuracy precision thermometers with one-year accuracy. To make the best measurements with SPRTs, use a thermometry bridge.

Platinum resistance thermometers use ceramic sensing elements with thin wire coils to prevent shorting during heating or cooling. Ohm's law calculates resistance, measured using temperature equipment. Variables like current size, nominal resistance, thermometer design, and thermal contact affect self-heating.

Platinum resistance thermometers use a ceramic sensing element with fine platinum wire coils to measure resistance. Resistance is calculated using ohms law, with self-heating effect affecting the temperature due to the environment. The magnitude of self-heating depends on factors like current size, nominal resistance, thermometer construction, and thermal contact with the environment.

A thermocouple is a device with two wires of different metals welded together, insulated with PTFE, ceramic, or MIMS. It generates an output when a temperature gradient exists. Cold Junction Compensation (CJC) is used to compensate for the error in measured temperature by the equivalent of ambient temperature. A Double Junction Thermocouple (DJT) provides a test thermocouple with a Reference Junction (RJ) which is more accurate than using an electronic internal CJC system. The DJT can be switched on or off depending on whether the thermocouple is fitted with its own RJ, making it ideal for accurate thermocouple measurement.

Catalytic diffusion sensors detect combustible gases and vapors by wounding wire into coils doped with catalysts. They are intrinsically safe and display gas concentration in parts per million (PPM) and percent volume (%). Electrochemical sensors detect and amplify current causing gas diffusion. Pressure gauges should be compatible and managed through standardization, audits, and employee training.

Pressure gauge failure is a critical issue in production facilities, causing accidents and serious consequences. The top eight causes include extreme temperature, overpressure, mechanical vibration, corrosion, misuse, pulsation, clogging, and steam. To avoid overpressure issues, choose gauges with a pressure range greater than the designed overpressure or consider overload stops or vacuum stops. Corrosion should be made from compatible materials or fitted with a diaphragm seal. Misuse, pulsation, and clogging can cause damage. Proper management of pressure gauges can reduce downtime, promote safety, and boost profits.

Pressure measurements are essential for various applications, including high-accuracy vacuum measurements, distillation vacuum columns, and tank leakage checks. Absolute pressure serves as the base reference, while gauge pressure is the difference between atmospheric pressure and absolute pressure. Differential pressure is the difference between two points of pressure, used in level measurement, overpressure measurement, flow and filtration, and leak detection. Measuring units include BAR, PSI, PA, Torr, InHg, and InH2O. Absolute pressure gauges are sealed instruments that measure the actual pressure applied regardless of atmospheric pressure change. Differential pressure measurement measures pressure drop across a system, such as monitoring a filtration system within a pipeline.

Digital pressure gauges are microprocessor-controlled devices used in various industries, including pharmaceuticals, food processing, petrochemicals, and water. They offer long calibration, better performance in extreme vibration, clear readings, customizable settings, and data logs. However, they require a power source, are expensive, require special certifications, and may need frequent calibration. They can be used with hydraulic and pneumatic comparators for higher accuracy.

Eurocaltech offers repair and refurbishment services for pressure gauges, valves, and Dead Weight Testers in high temperature or corrosive environments. Diaphragm seals can be repaired or replaced using welded or clamped seals. Regular checks and calibration are necessary for safety and efficiency in industrial facilities.

Pressure and temperature gauges are crucial tools in the oil and gas industry, used for extracting, transporting, and refining natural raw materials. They are used in drilling, transportation, storage, refinery, and petrochemical industries. Standpipe pressure gauges are used for standpipes, choke manifolds, pump trucks, and mud pumps, while gas-filled thermometers are used in harsh offshore environments. Differential pressure gauges are used for monitoring levels and pressures within storage tanks, while pressure measuring instruments are used in refineries for processes like distillation, fractionation, hydrocracking, process treatment, biodiesel, and ethanol production. Euro Caltech offers a wide range of pressure gauges, including standard full SS, solid front full SS, phenol case, SS case brass, low pressure diphragm, electric contact standard full SS, differential pressure gauges, and piston operated differential pressure gauges.

Choosing an accredited calibration provider is crucial for equipment accuracy and reliability. Non-accredited labs lack quality systems and follow technical regulations. Accredited laboratories, governed by ISO/IEC 17025, undergo regular audits. Accredited calibration helps minimize risk from out-of-tolerance instruments.

Calibration standards verify device performance, facilitate traceability, and facilitate international trade. They are found in primary calibration laboratories, often National Metrology Institutes, accredited by independent organizations.