NATA accredited temperature calibration
Our Sefton laboratory is accredited by NATA to ISO/IEC 17025, accreditation no. 20881, for the calibration of resistance thermometers from −50 to 150 °C. Traceable calibration reports are also available for thermocouples and other immersion sensors.

Accreditation no. 20881, site no. 25071 ISO/IEC 17025

Scope of accreditation
What the laboratory is accredited to calibrate, and to what uncertainty. The full scope is published by NATA under site no. 25071.
Calibration and measurement capability
Calibration and measurement capability
No. 20881
Resistance thermometers, by comparison with a reference standard
0.01°C
at 0 °C
- Across −50 to 150 °C
- 0.05 °C
| Service | Temperature metrology, temperature measuring equipment |
|---|---|
| Product | Metallic resistance thermometers, 3 or 4 wire RTDs |
| Technique | Comparison with a reference standard |
| Procedure | In-house method TCP-18L010 |
| Range | −50 to 150 °C |
| Probe diameter | Class A or B | 1/3 DIN | 1/10 DIN |
|---|---|---|---|
| 1.5 mm | 50 mm | 50 mm | 50 mm |
| 3.0 mm | 50 mm | 65 mm | 80 mm |
| 4.5 mm | 65 mm | 90 mm | 110 mm |
| 6.0 mm | 80 mm | 110 mm | 140 mm |
| 8.0 mm | 100 mm | 140 mm | 180 mm |
Book a calibration
Tell us what you need calibrated and we will confirm that it suits our laboratory, the cost and the turnaround before you send anything.
Sensors
Type, quantity, and whether they are 3 or 4 wire.
Size
Probe diameter and length, so we can check the immersion depth.
Points
The temperatures you need reported.
Report
NATA endorsed, or a traceable calibration report.
Accreditation documents
Buying calibration equipment?
This page is our calibration service. Isotech calibration equipment for your own laboratory is listed with our products.
