There are many different types of pressure standards available for performing pressure calibrations.  Finding the perfect solution for your pressure calibration needs can be overwhelming if you are not sure where to start.  The key is to know what type of questions to ask when making your decision.

What is a Pressure Calibrator?

A pressure calibrator is basically a pressure measuring device capable of calibrating the pressure reading of another measuring device.  Pressure standards is another name for them.  The pressure calibrator must be more accurate than the device being calibrated.  The calibration ratio is 4:1. This means that the pressure calibrator is 4 times more accurate than the device it is calibrating.

Pressure Calibrator Types                                                                                                  

Pressure calibrators come in a variety of configurations to fit specific requirements.

For field pressure calibration, there is a need for portability and functions that may include voltage, amperage, or digital signal monitoring from the device being calibrated.  In this case, handheld multifunction calibrators are the best choice.

In a laboratory, when higher accuracy is a requirement and it needs precise control of pressure, a pressure calibrator is the best choice.

The types of calibrators include:

• Piston gauges
• Deadweight testers
• Pressure controllers and calibrators
• Pressure comparators and digital pressure gauges
• Handheld pressure calibrators

Questions to Ask When Deciding on A Pressure Calibrator

1. What is the accuracy or the uncertainty of the device?

Once you know the specifications of your device under test, you can then look for calibrators that will give you what you need.

2. Where will you be using the calibrator?

If you are taking it to the field, your requirements will be different than if you are using it in a laboratory.

3. What are the pressure range and test medium of the device?

Once you know which categories of instruments will meet your measurement uncertainty needs and will operate in your environment, you can determine which model and categories can be used.

4. Do you need to generate and control pressure?

Most calibration procedures require a comparison of the device under test and calibration standard at multiple pressure points across the range.

5. What are the extras that you need to complete the solution?

You’ll want to make sure that you have the connection cords, protect the system from contamination, mounts if needed, and any maintenance extras.

6. Will you need training?

Check with the company you are purchasing from if they offer training on how to use the equipment or maintain the equipment.  Also, if they have an ISO/IEC 17025 accredidation, so when the pressure calibrator needs calibration, they can handle it.

Instrumentation Solutions

SRP Control Systems Ltd. specializes in instrumentation and calibration for a variety of industries.  If you are unsure what makes the most sense for your specific requirements, they can help you make an informed decision.  They are an ISO 9001 registered company with a state-of-the-art ISO 17025 accredited laboratory.