RH Systems calibration and repair services are respected world-wide. We are committed to providing the best calibration service as possible using personalized customer relations. With over 40 years of experience, RH Systems highly skilled and knowledgeable staff will ensure quality calibration using the best Dew/Frost point calibration standards with an unmatched turnaround time.

As a NVLAP accredited laboratory, RH Systems is reassessed to ensure that our quality and practices maintain such standards (NVLAP Laboratory Code 600161-0). The National Institute of Standards and Technology (NIST) administers the National Voluntary Laboratory Accreditation Program (NVLAP). NVLAP accredits public and private laboratories based on evaluation of their technical qualifications and competence to carry out specific calibrations or tests. NVLAP provides an unbiased third-party evaluation and recognition of performance. NVLAP accreditation signifies that a laboratory has demonstrated that it operates in accordance with NVLAP management and technical requirements pertaining to quality systems; personnel; accommodation and environment; test and calibration methods; equipment; measurement tractability; sampling; handling of test and calibration items; and test and calibration reports (

Our systems are designed to perform at high accuracy with tight tolerances. Many applications required extreme accuracy and tight tolerances at all times. This requires the systems to be calibrated and maintained on a regular basis. Your measurement is only as good as the system measuring it, and that is why we offer calibration and custom calibration services to all of our customers. We provide humidity calibration services for a wide variety of products including:

Chilled mirror hygrometers
RH Sensors and dew point measurement devices
Chart recorders
Humidity data loggers

Our turnaround time is typically under two weeks.

Calibration Quote


    Price matching available upon request