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Analogue Pressure Gauge Calibration

Experts in NATA accredited analogue pressure gauge calibration

If you need analogue pressure gauge calibration, get in touch with us at Zedflo. With over 40+ years of industry experience, our team is adept at ensuring your instrument measures correctly and accurately.

To ensure your pressure gauge functions properly, provides accurate readings, and maintains compliance with manufacturer and Australian standards, it is generally recommended for analogue pressure gauges to be calibrated every 12 months. Read more on calibration interval

We can test from ultra-low DP devices up to 4200 bar, and 0.009% uncertainty*.  With the widest pressure calibration scope in WA, and among the best in Australia, we can provide a NATA accredited calibration service for virtually any type of analogue pressure gauge model in use in Australia, including gauge, vaccum, compound, and absolute ranges.
*See our NATA scope here for full details.

No booking required

There’s no need to arrange an appointment in advance. Simply post or drop off your instrument whenever it’s convenient for you during business hours. Our efficient process ensures instruments are calibrated as soon as we can based on our current waiting list (Most cases can expect a turnaround time of between 3 and 7 days). For urgent cases, expedited services are also available for an additional fee.

Rest assured, your equipment will be handled with precision and care from start to finish, backed by our industry-leading expertise and NATA-accredited calibration standards.

How to organise a calibration
Digital pressure gauge calibration

Other Calibration Services

This page is about our analogue pressure gauge calibrations only.
Check our overview page for other calibration services we offer

Other calibration services
calibration services

Analogue pressure gauge models we can calibrate:

We can calibrate all brands, makes and models of analogue pressure gauges, Including:

  • Gauge
  • Vaccum
  • Absolute
  • Compound ranges
  • Backflow gauges

Some of the popular brands and types we have come across before include:

  • Zedflo
  • Rototherm
  • Tecsis
  • SPX
  • Ashcroft
  • Wika
  • Mcdaniel
  • Ross Brown
  • Baumer
  • Waaree
  • Larzep
  • Ambit
  • Stewart-Buchanan
  • Floyd
  • GTS
  • Backflow test gauges

But as mentioned, we do all makes and models – please contact us with an enquiry.

Enquire Now
Calibration form

In house repair service

  • OEM backed and authorised service and repair agents for many instruments in our range.
  • That means less downtime in the event a fault or issue is found.

Quality

  • Our NATA accreditation scope has some of the best uncertainties in Australia.
  • Advice you can rely on, with 40+ years experience in the industry.

Fast & Easy

  • Standard turn around under 1 week.
  • Expediting options available (as quick as same business day).
  • Express freight options at great rates.

Our Precise Analogue Pressure Gauge Calibration Expertise

Zedflo has been providing unparalleled calibration services with a focus on precision and excellence. Our advanced reference equipment ensures accurate automatic measurement of analogue pressure gauges providing high-quality results in pressure testing. Our equipment replicates and automates the various measurements and functions that the instrument performs and is tested across various test points to ensure instrument is meeting the required specifications. Our NATA-accredited laboratory is equipped with cutting-edge technology and staffed by a team of highly skilled technicians, ensuring that your analogue pressure gauge is calibrated to the highest standards enhancing the overall testing process.

At Zedflo, we are dedicated to providing top-tier test and calibration services that uphold the highest standards of accuracy and reliability. Whether you are in the residential, industrial, oil, gas, process, mining, or chemical industries, our expertise and commitment to excellence ensure that your equipment remains in optimal working condition.

A basic summary of our NATA accredited pressure calibration scope

We can calibrate virtually all pressure reading devices

  • Up to 420MPa / 60,000PSI
  • 0.009% uncertainty capability for precision devices up to 105MPa (15,000PSI)
  • Excellent low pressure capability – 0.65Pa uncertainty on draught pressures
  • Barometers and absolute pressure transmitters with current, voltage or frequency outputs

View our full accredited scope on the NATA website

NATA scope

Advantages of regular analogue pressure gauge calibrations

Calibration is essential to ensure that your analogue pressure gauge provides accurate results, which in turn reduces the risk of errors while the instrument is in use. Accurate measurements are crucial in reducing the risk of errors in your calibration, measurement or testing process. If a gauge isn’t calibrated properly, results will have an inherent bias, and can result in mistakenly reporting results of a test or calibration. However, the benefits of calibration on analogue pressure gauge also go beyond just accuracy. Here are some of the advantages of regular calibration:

  • Improved Reliability: Calibrated pressure gauges offer consistent and reliable performance over time. This reliability will give you more confidence when you’re out making real life measurements, therefore minimising the need for retests and reducing downtime in operations.
  • Cost Savings: Regular calibration helps detect and rectify minor issues early, preventing them from snowballing into costly repairs or equipment failures. Additionally, accurate testing results help identify faults promptly, allowing for a faster, more efficient, & safer testing process.
  • Ensuring Compliance and Safety: Regular calibration of pressure gauges is not merely a recommendation but a necessity to ensure compliance with safety standards and regulations. Accurate measurements are essential for maintaining these safety standards. These systems are subject to various environmental and operational factors that can affect their performance over time. Humidity, temperature fluctuations, pressure changes, and even routine handling can all impact the accuracy of your equipment.

By entrusting Zedflo with your calibration needs, you can rest assured that your analogue pressure gauge will continue to deliver precise and reliable measurements, safeguarding the integrity of your measurements and safety of those who rely on them. We are known to provide top-tier calibration services for analogue pressure gauges.

Why Choose Zedflo?

Choosing Zedflo for analogue pressure gauge calibration needs comes with several significant benefits:

  • NATA Accredited Laboratory operating in accordance with ISO 17025
  • Authorised, OEM backed services (for specific brands and models)
  • Fair and affordable rates
  • Where faults are identified, we offer in house repair services for certain makes and models with a 120 day after repair warranty where applicable (terms and conditions apply)
  • Fast standard turnaround times, typically under 1 week
  • Expedited service options for same or next-day turnaround
  • Guarantee to offer professional, impartial advice for your repair or calibration with 40+ years of experience in the industry
  • Accurate automatic measurement capabilities for pressure gauge calibrations
Calibration services

Frequently asked questions about analogue pressure gauge calibrations

How often should analogue pressure gauges be calibrated?

Various factors influence the value and frequency of calibration, such as usage intensity, environmental conditions, and manufacturers recommendations to maintain accuracy and performance. In essence, there is no “one size fits all” answer, however, the general consensus is that annual calibration often tends to strike the right balance between prudence and cost effectiveness. Read more about this at the link below.

Read post about calibration interval

Is calibration the same as a repair?

No. Calibration is a check of the measurement capability of the tester to ensure it is accurate and meets standard specifications. A repair involves fixing a fault or malfunction in the device. If a fault is identified during calibration then we may be able to offer a repair service or just advise and report on the relevant issues.

Are adjustments included when a measurement is found to be ‘out of specification’?

We include basic adjustments where possible at no additional cost. This is only possible where manufacturers share adjustment procedures and processes with external laboratories. Metrel meters, for example, we can adjust them to improve measurements where required. Some other brands do not give out adjustment procedures to external laboratories forcing their customers to use their own ‘authorised’ lab/s when adjustment or repair is needed. For any instrument where this applies, we can only report on the ‘actual measurements’, meaning our calibration report may indicate some ‘failed’, or ‘partial fail’ calibration points.

Why use a NATA-accredited calibration lab?

NATA-endorsed certificates should give you confidence in the quality of measurements and calibration report while giving you peace of mind that the results can be trusted as a NATA-endorsed calibration certificate can only be issued by a NATA-accredited laboratory.

It means that the calibration laboratory has been assessed and audited in accordance with the international standard “ISO 17025 – General requirements for the competence of testing and calibration laboratories”. This standard requires staff to be technically competent and properly trained, the lab uses only validated procedures, and their references and standards have unbroken traceability chains to International Standards. The lab also has quality management policies and procedures in line with those followed in ISO 9001.

What does the calibration process include?

  • A calibration certificate, bearing the NATA emblem
  • A calibration sticker on the device itself
  • Free basic instrument adjustment to improve performance where possible
  • Reporting of results, both prior to and the following adjustment if required
  • Method selection and statement of compliance following strict criteria

There is no need to make a booking. To get started we have a few options you can choose from:

Enquiry only
  • Complete our calibration enquiry form, we will typically reply within 1 business day explaining your options moving forward and instructions on sending us your instrument.
  • For most instruments we can and will provide a calibration quote/estimate.
emailEnquire now
Mail in your device
  • Skip the enquiry. If you have a model we calibrate, you can send it straight in for inspection.
  • Print out the form, follow the instructions on the form and send the completed printed copy enclosed with the goods.
picture_as_pdfCalibration form
Walk in, in person
  • Walk in/drop in your instrument during business hours, no appointment required.
  • It’s handy for you to print and complete the below form and bring a copy with you otherwise we can ask you the relevant questions in person
picture_as_pdfCalibration form
Call us to discuss
  • You can call us during business hours to discuss your repair options on (08) 9302 1266
callCall now

Complete one of the options from ‘How to organize a calibration?’

You can send us your instrument, or drop it into us during business hours

If urgent, let us know and we can offer an expedited service for an additional fee

Once the instrument arrives we will send you a formal quotation for your approval. (or seek approval in person)

You can contact us at any time for a status update

After your approval we will perform the quoted works.

Standard turn around is 1 week.

This will vary with work loads but we are often faster than that, calibrations are typically worked on in order of receival/approval

When completed we will send you an invoice for payment.

If you are on a ‘30 day trade account’ then we will process as per your PO or agreement.

After payment is cleared (or PO is processed for account customers), we will inform you that the goods can be collected, or if you have opted for shipping we will typically dispatch same or next business day.

You can also pay in store at time of collection.

Prices vary depending on pressure range and accuracy spec

It is best to contact us for a quote, but you can expect the price to be in the range of $125 – $340 +GST*

We will however quote you before carrying out the work.
*Correct at time of writing, subject to change without notice, we encourage you to contact us for current pricing on your tester model

  • Most of the time we can provide a quote/estimate even without seeing the instrument in person.
  • Some instruments may require an inspection prior to formally quoting
  • Be aware a quote is only an estimate, the quote may need a variance after we have inspected or even begun the calibration procedure, for example if we find damage or faults with the instrument that were not expected and not within the initial scope of the job.
  • We will contact you with a revised quote before proceeding further where necessary.

We have a minimum fee of $80 +GST, this applies as a minimum inspection fee and also a minimum calibration attempt fee for any instrument processed through our facility.

  • Instruments that fail a calibration are generally still chargeable up to the full quoted price, we may at our discretion charge a lesser fee depending how much time and effort was spent working on the instrument.
  • For failed instruments if possible we may be able to offer a repair or replacement
  • Some instruments may carry a larger minimum fee, for example in cases where we need to send the instrument to a 3rd party for assessment, in these cases before moving forward we will quote an elevated minimum fee to cover the associated freight costs and 3rd party assessment fees.

Typical internal flow of a calibration

Typically, the whole calibration process is completed within 1 week.

  • This does vary and depends on various factors, but more often than not we are actually quicker.
  • Your instrument will go through various stages during a typical calibration, we are efficient at moving it between various stages in the process but sometimes delays can happen, we will inform you if we expect any kind of delay.
  • Some calibrations may be sent to a 3rd party partner or supplier, in which case they will carry a longer than our standard turnaround time. We do, however, strive to provide the very best and accurate estimate of turnaround time at time of quoting.

For expedited ‘same day’ or ‘next day’ service, Zedflo is the best calibration service to look to!

We are always busy and do have a constant stream of work in our laboratory, instruments are usually worked on in the order they are received, and then in order of confirmed approval to proceed with quote, but for a fee your instrument can jump the queue when you require a fast turn around.

The fee will vary, and is subject to availability, but as a typical guide:

  • Next business day turn around add 30% to the normal fee
  • Same day (next on bench) turn around add 50% to the normal fee

Contact us today for more information about how we can help you with your instrument calibration needs.

View our full accredited scope on the NATA website:
NATA scope

All services including repairs and calibrations are subject to our standard terms and conditions

View our terms and conditions

More information

Bench testing an analogue gauge:

Bench testing an analogue gauge is a precise process aimed at ensuring the gauge’s accuracy and reliability. Below is a step-by-step guide on this procedure:

Preparation

Cleaning

Before testing, clean the gauge thoroughly to ensure that no dirt or debris interferes with its operation or your reference equipment.

Inspection

Check the gauge for any signs of damage or wear. Any defects could affect the accuracy of the test.

Reference Equipment

Ensure all necessary testing equipment is available, functional and is within its required calibration interval. This includes a reference gauge/module, a pressure source, any required connectors or adapters, and finally ensure access to any applicable calibration standard you may be required to follow (e.g. MSA Test Method 2).

Environmental Conditions

Take note of environmental conditions (temperature, gauge positioning etc.) to report these along with the results as ‘test conditions’.

Connection

Securing the Gauge

Attach the gauge securely to the test bench. This involves making sure that all connections are tight and leak-free, ensuring safety.

Setting up Test Equipment

Connect the gauge to the standard pressure source. Ensure that all connections between the gauge, the pressure source, and the reference gauge are secure and correctly configured.

Execution

Running the Test

Apply pressure from the standard source to the gauge being tested. Monitor the gauge’s response and compare its readings to that of the reference gauge.

Observing Responses

Pay attention to how the gauge reacts to changes in pressure. Note the speed of response and any lag in the readings.

Documentation

Recording Results (Error)

Document any differences (gauge error) between the gauge’s readings and the reference gauge’s. Note the conditions under which these differences occur.

Evaluating Acceptability

Assess whether the variances are within acceptable limits for the gauge’s intended use. This may involve the use of a calibration standard (e.g. MSA Test Method 2).

Maintaining Records

Keep a detailed record of the test results for future reference and quality control purposes.

Inside a pressure gauge: A closer look:

Case and Ring

This part of the pressure gauge is the protective shield, safeguarding the internal components from external elements like dust, moisture, and mechanical impact.

The case is typically made from robust materials like stainless steel or plastic, and it houses all the internal parts of the gauge. The ring is usually a circular component that secures the face or the glass of the gauge, adding an extra layer of protection and often enhancing the aesthetic appeal of the device.

Dial and Pointer

The dial and pointer are the most visible parts of a pressure gauge and are collectively known as the face of the gauge. The dial usually features numerical markings indicating pressure levels, and it may have different scales depending on the type of pressure being measured (e.g., psi, bar, kPa). The pointer, which is a thin, needle component, moves over the dial to indicate the current pressure reading. The clarity and precision of the dial and pointer are crucial to ensure accurate measurements.

Bourdon Tube

Is a curved, flexible tube that changes shape in response to the fluid or gas pressure inside, resulting in the movement of the pointer, and thus the indicated pressure on the face of the gauge.

Movement

A critical component that translates the mechanical motion of the Bourdon tube into a readable indication on the dial.

This mechanism typically involves a series of gears and linkages that amplify the small movements of the Bourdon tube into a larger, more discernible motion of the pointer across the dial.

Dial vs Mechanical: Which one should I choose?

When choosing between digital and mechanical pressure gauges, it’s essential to consider the specific requirements of your application, including factors like precision, durability, environmental conditions, and budget.

Digital Pressure Gauges

High Precision

A digital pressure gauge is known for its higher precision and accurate measurements. They often feature advanced sensors that provide exact measurements, which can be crucial in applications where precise pressure monitoring is necessary.

Easy to Read

These gauges typically have a clear digital display, often an LCD, which shows the pressure gauge reading in an easy-to-read format. This can be particularly advantageous in low-light conditions or where quick, unambiguous readings are required.

Cost Considerations

Generally, digital gauges are more expensive than their mechanical counterparts. This is due to their more complex technology and additional features. The cost might be a significant factor, especially for large-scale deployments or where budget constraints are tight.

Mechanical Gauges

Durability

Mechanical gauges are typically more robust and better suited for tough conditions. They are less sensitive to dust and moisture, making them ideal for industrial environments or outdoor applications.

No Power Requirement

These gauges operate purely mechanically and do not require any power source. This makes them more suitable for use in remote or off-grid locations.

Maintenance and Attention

Mechanical gauges might require more frequent calibration and maintenance to ensure accuracy. They are also more prone to wear and tear due to their moving parts.

Contact Us

Get in contact with us today to see how we can help. Please fill out the enquiry form below and we will get back to you as soon as possible.

Address(Required)

Opening hours

Monday to Friday: 8am to 4:30pm
We are closed on public holidays

Address and contact information

Unit 3, 115 Excellence Drive, Wangara, Western Australia, 6065
(08) 9302 1266
sales@zedflo.com.au

Business Name / ABN

Process Control Instrumentation Pty Ltd T/A Zedflo Australia
ABN 58 120 609 814

Zedflo operates an ISO17025 NATA Accredited Calibration Lab.

You can view our NATA scope here

We are able to calibrate all popular and leading brands including Additel, Fluke, Druck, Beamex, Crystal, Transmation, Wika, Metrel, Megger, AEMC and many more