Digital Pressure Gauge Calibration

Why Choose Our Digital Pressure Gauge Calibration Service

Industry Leaders Nationwide for Digital Pressure Gauge Calibration Services

Zedflo has been a market leader in test and measurement equipment since 1982. In 2014 we established a service and repair laboratory, and in 2018 achieved NATA accreditation for compliance with ISO/IEC 17025—Calibration. Our quality and customer service policies focus on providing the very best service.

Zedflo proudly offers calibration services with uncertainty of measurement capabilities among the best in Australia. We have invested in high-performance equipment across our laboratory.
We constantly strive to give the best customer service, which clients have come to expect over our 40+ year history in test and measurement.

Our NATA accreditation is an independent testament to our attention to detail, commitment to working to international standards in quality and technical management and metrological traceability.

Calibration services
Calibration services

Our Accreditation

  • NATA Accredited Laboratory operating in accordance with ISO/IEC 17025
  • Authorised Metrel Service and Calibration Centre
  • Authorised Additel Service and Calibration Centre

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.


  • 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.

Why Calibrate?

The successful operation of any process depends on the accuracy of each instrument in the control loop. It is essential that sensors in a system are properly calibrated for the entire loop perform reliably. This requires suitable calibration methods to be used, trained personnel, and metrological traceability being maintained. Choosing the right calibration laboratory can be as important for lifetime accuracy and reliability of an instrument as selecting the right equipment in the first place.

Accredited Calibration:
Accredited calibration helps you objectively understand an instrument’s performance, while giving you peace of mind that the results can be trusted.

Zedflo’s NATA accredited services include:

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

More Info On Digital Pressure Gauge Calibration

Detailed NATA Digital Pressure Gauge Calibration Services

In the realm of precise measurements, digital pressure gauges are invaluable tools. Calibration, an essential process for ensuring accuracy and reliable readings, is vital in many industries. This introduction will guide you through the significance and methods of calibrating digital pressure gauges.

View our full accredited scope on the NATA website:

A basic summary of our NATA accredited scope:


We can calibrate virtually all pressure reading devices

  • Up to 415MPa / 60,000PSI
  • 0.009% Uncertainty capable 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


DMMs, Meters, Calibrators

  • DC Voltage up to 1050V, from 5ppm uncertainty
  • DC Current up to 30A, from 20ppm uncertainty
  • AC Voltage and Current 10Hz to 100 kHz, from 0.02%
  • Resistance up to 10 GΩ, Capacitance up to 200 mF

HV Insulation and Continuity

  • Insulation Resistance up to 10GΩ, 10kV test voltage
  • MicroOhm Continuity from as low as 1μΩ at 100A test current

Frequency and Time

  • Frequency calibration up to 100 MHz on counters, meters, calibrators or testers.  From 5 μHz uncertainty
  • RCD Testers, trip time uncertainty from 0.3ms

Resistor Sets and Decade Boxes

  • Standard Resistors, Calibration Boxes,
    Insulation Test Boxes, Decade Boxes etc…
    From 10 μΩ to 10 GΩ
  • NATA Accredited Laboratory operating in accordance with ISO/IEC 17025
  • Authorised, OEM backed services
  • Fair and affordable rates
  • 120 day after repair warranty (terms and conditions apply)
  • Fast standard turnaround times, typically under 1 week
  • Expedited service options for same or next day turn around
  • Guarantee to offer professional, impartial advice for your repair or calibration with 40+ years experience in the industry

We have a few options you can choose from:

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.

Normal business hours

Monday to Friday, 8am to 4:30pm

We are closed on public holidays

Accepted payment methods
  • Direct bank transfer
  • Card payment over the phone (Mastercard & Visa only)
  • Eftpos payment in store (Mastercard & Visa only)

We typically have a standardized pricing structure for calibrations

  • 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.


Analogue Pressure Gauge
Digital Pressure Gauges
Pressure Transmitters & Transducers
Pressure Calibrators
Pressure Switch Setting


Clamp Meters
Installation Testers
RCD Testers
Insulation Testers
Loop Impedance
Earth Testers
Process Calibrators
Loop Calibrators

Turn around:

We know rapid turn around is important, we endeavour to repair or calibrate your equipment as quickly as possible, we advise a typical lead time of 7 days but we can often turn around calibrations next business day depending on our work load.

Other Calibrations:

We can calibrate various other instruments too, it doesn’t have to be Metrel or Additel – below is a current list of products we are capable of calibrating, if you have something not on this list, please make an enquiry.

Calibration is the process of checking and configuring a pressure gauge to ensure accurate measurements can occur. This section will delve into the intricacies of digital pressure gauge calibration, explaining how it works and why it’s crucial.

Digital pressure gauge calibration is a process used to ensure that digital pressure gauges, instruments that measure and display the pressure in a system using electronic means, are providing accurate and reliable readings.

This calibration involves comparing the readings from the digital pressure gauge with those from a standard or reference gauge that has known accuracy. The process usually takes place in a controlled environment to minimise the effects of external factors such as temperature and humidity.

Calibration, a fundamental process in various industries, involves the verification and adjustment of measurement instruments to ensure their required accuracy and reliability. This process is essential for maintaining the quality and consistency of products, processes, and safety in various fields. Here are some key points highlighting the importance and benefits of calibration:

Accuracy and Precision in Measurements

Calibration ensures that instruments, such as scales, pressure gauges, and thermometers, provide accurate and precise measurements. This is crucial in industries where exact measurements are critical.

Quality Assurance

Calibration improves and ensures that the measurements used in production processes are correct, leading to the consistent quality of products.

Cost Savings

Regular calibration can identify issues with instruments before they become significant problems. This proactive approach can save money by preventing costly repairs, production downtime, and poor-quality products.

Extended Instrument Lifespan

Regular calibration can extend the life of measurement instruments. By detecting and correcting issues early, instruments remain in good working condition for an extended period of time.

This practical guide will provide a detailed walkthrough on how to calibrate a digital pressure gauge, ensuring users can perform calibration effectively and safely.

  1. Understand Your Digital Pressure Gauge: Familiarise yourself with your specific model of digital pressure gauge and its functions. Refer to the manual for any specific calibration instructions or requirements.
  2. Prepare Calibration Equipment: You will need a high-accuracy standard pressure gauge or a pressure calibrator as a reference. Ensure that the reference device has a higher accuracy level than the digital gauge being calibrated, and that the reference device is calibrated. 
  3. Create a Stable Environment: Conduct the calibration in an environment with minimal temperature fluctuations and vibrations. Digital gauges can be sensitive to environmental changes. Note the temperature so you can report it along with calibration results.
  4. Connect the Gauges: Safely connect your digital pressure gauge and the standard/reference gauge to a common pressure source. Ensure all connections are leak-proof.
  5. Zero Calibration: Start with zero calibration. With no pressure applied, ensure that the digital gauge reads zero. If it doesn’t, use the zero calibration function (if available) to adjust it.
  6. Apply Pressure Gradually: Slowly increase the pressure from your source. Digital gauges respond quickly, so a gradual increase helps in stabilising the readings.
  7. Record Readings at Various Points: At multiple points along the gauge’s range (such as 25%, 50%, 75%, and 100% of its full scale, or according to a standard e.g. MSA Test Method 1), record the readings from both the digital gauge and the reference gauge. Allow a moment for the readings to stabilise before recording.

Compare and Analyse Readings: Compare the readings from your digital gauge with those from the reference. The readings should be within the acceptable error range specified by the gauge’s manufacturer. Any significant deviation may indicate a need for adjustment or servicing.

Temperature Variations

The effect of temperature on both the gauge and the calibration equipment is significant. Gauges may give different readings at different temperatures. It’s important to calibrate in a temperature-controlled environment to ensure accuracy. Refer to user manuals for temperature operation range.

Gauge Sensitivity

Highly sensitive gauges require more frequent and precise calibration. The sensitivity of the gauge determines the level of accuracy needed in the calibration process.

Determining when and how often to calibrate involves understanding various factors that can influence the performance of your gauge. Here’s a guide to help you establish an effective calibration schedule for your digital pressure gauge.

Initial Calibration

Upon Purchase: Calibrate your digital pressure gauge immediately after purchase to ensure it meets your specific requirements and accuracy standards.

Scheduled Calibration

Regular Intervals: Establish a routine calibration schedule. The frequency depends on factors like the gauge’s usage rate, manufacturer recommendations, and the critical nature of its measurements.

Industry Standards: Follow industry-specific standards or regulatory requirements that may dictate calibration intervals.

Usage-Based Calibration

High-Frequency Use: If the gauge is used frequently or in critical processes, increase the calibration frequency to ensure consistent accuracy.

After Significant Events: Recalibrate after events that could impact accuracy, such as mechanical impacts, exposure to extreme conditions, or major changes in the operational environment.

Performance Indicators

Inconsistent Readings: If the gauge starts showing inconsistent or drifting readings, it should be calibrated immediately.

After Repairs: Calibration is necessary after any repair or replacement of parts.

Preventive Maintenance

Regular Checks: Incorporate calibration checks into your regular maintenance schedule to preemptively catch any accuracy issues.

Environmental Factors

Changing Conditions: If the gauge is used in varying environmental conditions (temperature, humidity, etc.), more frequent calibration may be required.

Calibration Process

Use Certified Standards: Ensure the calibration is done using standards that are traceable and have a known higher accuracy.

Document the Process: Keep detailed records of each calibration, including the date, conditions, results, and any adjustments made.

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

Get in touch with us for your next process calibration

Our comprehensive calibration services are indispensable for any industry seeking precision, safety, and compliance. Book your calibration today!

By offering a diverse range of calibration types, we cater to the unique needs of various measurement instruments. If you have equipment that needs calibration that we have not outlined above, please contact us for further information.

Our meticulous process calibration ensures the accuracy and consistency of your equipment, enhancing overall industrial operations. With our expert team and advanced methods, we align measurements with standards and elevate the quality and reliability of production processes. With our team and process, you can feel confident that your equipment will work more accurately and efficiently than ever before. Contact us to see what we can do for you.

Trust us to be your partner in maintaining the highest measurement accuracy and operational excellence standards. Contact us at Zedflo today for your next calibration.

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.


Opening hours

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

Address and contact information

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