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UKAS PRT Calibration

UKAS-Accredited PRT Calibration Services

Are you looking for accurate and competitive PRT calibration services?

PRT calibration is essential for maintaining the accuracy, traceability and reliability of platinum resistance thermometers used within calibration laboratories, manufacturing facilities and regulated industries.

At Withnell Sensors, we provide UKAS-accredited PRT calibration services from our ISO/IEC 17025 accredited laboratory. Using a combination of fixed points and fluid comparison baths, we offer precision platinum resistance thermometer calibration from -196°C to 420°C.

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Specialist PRT Calibration

Platinum Resistance Thermometer Calibration

Dedicated calibration services for SPRTs and industrial PRTs.

UKAS Accredited

ISO/IEC 17025 accredited laboratory and procedures.

Fast Turnarounds

Flexible service options to minimise downtime.

Competitive Pricing

Cost-effective calibration without compromising quality.

Fixed Point and Comparison Bath Calibration

We use a combination of internationally recognised fixed points and high-accuracy comparison baths to deliver reliable platinum resistance thermometer calibrations. Our UKAS-accredited laboratory can perform calibrations across a wide temperature range, supporting customers requiring traceable reference standards for laboratory and industrial applications.

Calibration points can be selected to suit your requirements, ensuring your PRT is calibrated for its intended operating range. Calibration capability:

  • Liquid Nitrogen: -196°C 
  • Triple Point of Water: 0.01°C 
  • Tin Fixed Point: 231.928°C 
  • Zinc Fixed Point: 419.527°C 

Trusted UKAS Calibration Laboratory

At Withnell Sensors, we continuously invest in laboratory equipment and facilities to support a wide range of customer requirements.

All PRT calibrations are performed within our ISO/IEC 17025 accredited laboratory, ensuring complete traceability and confidence in your measurement results.

We understand that calibration downtime can disrupt operations, which is why we focus on competitive lead times, responsive communication and flexible service options.

If required, we can also discuss service agreements and ongoing calibration programmes.

UKAS On-Site Probe Calibration

For customers who require equipment to remain operational, we offer UKAS-accredited (or traceable) on-site temperature probe calibration.

Our engineers can perform calibration on-site throughout the UK and Ireland using specialist calibration equipment.

Typical calibration points range from -90°C to 140°C, with calibration programmes tailored to your requirements.

Benefits include:

  • No equipment shipping
  • Reduced downtime
  • Calibration at your facility
  • Flexible scheduling options

PROCESS

End-to-end support

Consult & Advise

Consult & Advise

Expert guidance to define your temperature and humidity needs

Supply & Install

Supply & Install

Delivery and setup of leading equipment for regulated environments

Validate & Calibrate

Validate & Calibrate

UKAS-accredited calibration, environmental mapping, and testing for compliance

Maintain & Support

Maintain & Support

Maintenance, repairs, rentals, and support keep systems compliant

Clients we’ve Worked With

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Get in Touch With Our Specialist Team

Whether you require a single temperature mapping study or ongoing temperature mapping validation support, our engineers can help identify the right approach for your environment and compliance requirements.

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