7 Factors to Think About When Choosing a Deadweight Tester

Dead weight testers play a major role in various industries, such as oil and gas, chemical manufacturing, pharmaceuticals, and power generation. The instrument helps with pressure accuracy. So, if you are planning to purchase a dead weight pressure tester in Singapore, then here are a few key factors you need to keep in mind:

1. Consider the pressure range:

Start by assessing the pressure range required. Deadweight testers offer a wide range of coverage. They operate as percent-of-reading devices, meaning their performance improves at pressures below full scale. Ensure the full scale exceeds the highest pressure needed. You can also plan for future expansion by selecting a tester with a higher full scale.

2. Think about the medium:

Consider the medium to be used, which often depends on the pressure range. Gas is ideal for lower pressures, offering cleanliness and reducing the impact of head height corrections. However, for higher pressures, water or oil are necessary. Liquids, being incompressible, allow for precise pressure adjustments. Mineral oil is commonly used but may introduce contamination, which can be addressed with water or liquid-to-liquid separators. Keep these factors in mind when choosing dead weight pressure testers in Singapore.

3. Pressure Generation:

Deadweight testers both measure and generate pressure. Hydraulic testers utilize a priming pump to increase pressure, while gas pressures below 300 psi can be achieved with a hand pump. Higher gas pressures require external sources, like nitrogen bottles. Vacuum generation follows similar principles, with hand pumps suitable for lower pressures and external vacuum pumps for higher vacuums.

4. Weight Sets:

Deadweight testers utilise precision piston-gauge systems with calibrated weight masses. These sets come in various units of measure and can be supplemented with fine-increment weight sets for more discrete pressure adjustments.

5. Accuracy of the instrument:

Gravity variation impacts deadweight tester accuracy, but manufacturers can trim weights to suit specific locations. Testers are available in different accuracy classes, with better accuracies often requiring additional corrections. Improved accuracy options may include software assistance for pressure calculations.

6. Adaptability of the equipment

Test ports on deadweight testers should be adaptable to various pressure devices. You will find adaptors for different sizes and types, so choose the one with leak-tight seals without the need for wrenches or tape.

7. Calibration:

Quality calibration data is crucial for accurate measurements. Unitest Instrument offers calibration for dead weight pressure testers in Singapore. With their experience as technicians, they can ensure the accuracy of your instrument. Book an appointment today!

GET IN TOUCH

Name*

Email*

Phone*

Company*

Country code*

Message*

Your Go-To Calibration Service Provider - For Professional by Professional