Calibration and Service

Precision Safety Solutions offer a range of Calibration and Service options for Portable Gas Detectors, Fixed Gas Detectors, Ultrasonic Gas Leak Detectors, Flame Detectors, and Refrigerant Detectors. Clients perform daily bump and calibration checks using calibration gas, but It is highly recommended that your instruments receive regular maintenance and third party calibration.

The third party calibration and checks ensure that your detectors operate correctly, produce accurate and reliable results, and comply to the original manufacturer instructions.  Precision Safety Solutions , calibrate service and maintain any manufacturers gas detection equipment.

Precision Safety is a supplier of some  of the biggest brands in safety equipment, offering the largest range of products across Australia and New Zealand. We are highly experienced and well trained to perform service, repair and calibrations on most technical safety devices and equipment.

PSS also supply an extensive range of Calibration Gas and Regulators for your portable and fixed gas detection equipment.  We can arrange installation, commissioning, and perform on-site scheduled maintenance of your fleet of Portable Gas Detectors or Fixed Gas Detectors.


Precision Safety is an authorised service and repair centre, capable of performing warranty and service repairs on all Portable and Fixed Gas Detection Instruments. We have qualified service technicians that are well trained and authorised to perform service work on behalf of the Original Equipment Manufacturers.

Precision Safety is a Specialist Technical Safety Products & Services Company

We're a supplier you can trust to calibrate and service your equipment

Calibration and Service

Our experience, attention to detail and precision in safety, ensures that safety equipment are repaired and calibrated to manufacturers specifications in accordance with manufactures specifications and relevant AS/NZ standards.

Gas Detection Bump Test vs Calibration

Bump (or Span) Check

A bump check is a means of verifying calibration by exposing the instrument to a known concentration of test gas. The instrument reading is then compared to the actual quantity of gas present (as indicated on the cylinder). if the instrument’s response is within an acceptable range of the actual concentration, then its calibration is verified. When performing a bump test, the test gas concentration should be high enough to trigger the instrument alarm. if the bump test results are not within the acceptable range, then a full calibration must be performed.

Instrument Calibration

Whether an instrument warns and/or alarms at the proper time depends on its ability to translate the quantity of gas it detects into an accurate reading. “calibration” refers to an instrument’s measurement accuracy relative to a known concentration of gas. Gas detectors perform relative measurements: rather than independently assessing the quantity of gas present, they measure the concentration of the air sample and then compare it to the known concentration of the gas that the instrument is configured to sample. This “known concentration” serves as the instrument’s measurement scale, or reference point.

Full Calibration

A full calibration is the adjustment of the instrument’s reading to coincide with known concentrations (generally a certified standard) of zero and span gases, to compensate for calibration drift. In most cases, a full calibration is only necessary when an instrument does not pass the bump test (or after it has been serviced).

We Calibrate, Service & Repair All Brands

Gas Detector Service

How often do we need to Calibrate?

Frequency of Calibration

The frequency of calibration depends on the sensor’s operating time, conditions of use (including chemical exposure) and user experience with the instrument. New sensors should be calibrated more often until the calibration records prove sensor stability. The calibration frequency can then be reduced to the schedule set by the safety officer or plant manager. Portable Gas Detectors however require bump testing daily or Prior to Use, and if the detector fails the bump test, requires re-calibration. Most manufacturers do recommend re-calibration at least every six months or 180 days.

Need Calibration Gas and Regulators ?

We stock a range of calibration gases for your portable and fixed gas detector calibrations at competitive prices!

MSA Gas Detector Calibration
Honweywell Gas Detector Calibration

Calibration Gas Cylinders for Calibration and Service of Gas Detectors


Calibration Gas Cylinders

  • 34 Litres Calibration Gas
  • 58 Litres Calibration Gas
  • 65 Litres Calibration Gas
  • 103 Litres Calibration Gas
  • 112 Litres Calibration Gas

Fixed Flow Regulators

  • 0.25 L/M Regulator
  • 0.50 L/M Regulator
  • 1.0 L/M Regulator
  • 1.5 L/M Regulator

Variable Flow Regulators

  • 0-3 L/M
  • 0-5 L/M