The organizer of the proficiency testing scheme, PT Provider PTS Bulgaria, invites you to participate in proficiency testing scheme No. PTS 26/06-C-1 Calibration of a Digital Hygrometer, conducted as a sequential interlaboratory comparison.
The scheme is conducted in accordance with ISO/IEC 17043:2023 and is intended for laboratories performing calibration of hygrometers or other instruments for measuring air relative humidity.
The PT item is a digital hygrometer ETI Ltd Therma 6102 with an external probe. Calibration is performed for the calibration points applied for by the participant within the range 10 %RH to 90 %RH, at a temperature from 20 °C to 25 °C.
The participant may apply for all or only part of the specified calibration points. Performance evaluation is carried out using the En criterion, based on assigned values determined through reference calibration.
The deadline for application is 30 September 2026.
When completing and submitting an Application for Participation in PDF format, the date of application is considered to be the date on which the completed application is received at the e-mail address specified in the application.
When applying through the electronic form on the website, the date of application is considered to be the date on which the automatic e-mail containing the data completed by the participant is received.
Further details on the conditions for participation, receipt and dispatch of the PT item, reporting of results and performance evaluation are provided in the Proficiency Testing Plan and in the Invitation for Proficiency Testing in the “Documents for Participation” section.
ITEM OF THE PROFICIENCY TESTING
DIGITAL HYGROMETER
CALIBRATION
| Calibration Item | Calibration Points | Measured value | Number of participations |
|---|---|---|---|
| Digital hygrometer ETI Ltd Therma 6102, equipped with an external probe for measuring relative humidity. Serial number: D18050220; Sensor measuring range: 0 %RH – 100 %RH; Resolution: 0.1 %RH; | 10 %RH 20 %RH 30 %RH 50 %RH 70 %RH 90 %RH |
Air relative humidity |
Калибрирането се основава на принципа на пряко сравнение между показанието на обекта на РТ схемата и референтна стойност на относителната влажност, реализирана от еталонното оборудване на участващата лаборатория. Калибрирането се извършва съгласно установената процедура на участващата лаборатория за калибриране на хигрометри, при температура от 20 °C до 25 °C.