EdgeTech RH CAL
Humidity Calibration Chamber

  • EdgeTech field proven Optical Chilled Mirror (OCM) Technology
  • Completely self-sufficient and portable humidity calibration system
  • Highest accuracy available for both RH and temperature (AT):
    • RH Accruacy: ±0.5%
    • RH Range: 5% to 95%
    • AT Accuracy: ± 0.2°C
    • AT Range: 10°C to 50°C
  • Temperature and RH controlled independently
  • Automatic correction for mirror contaminants
  • Certified measurements against NIST traceable standards
  • Standard features, where others charge extra
Edgetech RH CAL Shown
EdgeTech RH Cal Shown
Product Information
Datasheet 313 KB
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Unlike other comparative systems RH CAL is entirely self-sufficient. It does not need compressed air or a water connection to operate, which allows this system to be truly portable.

RH CAL is a microprocessor based, programmable humidity calibration system that is at home in the metrology lab or out in the field performing on site NIST traceable humidity calibrations. The system offers the highest accuracy available for both relative humidity and ambient temperature.

With RH CAL, temperature and relative humidity are controlled independently; therefore, you are not limited to performing calibrations at the surrounding ambient temperature, which may not be appropriate for your unique calibration protocol. Using EdgeTech’s Optical Chilled Mirror (OCM) primary measurement technique for traceability and feedback control, RH CAL is a standalone, portable humidity calibration system. 

Contributing to RH CAL’s ease of use are features such as maintenance reducing Automatic Balance Cycle (ABC), an integral ambient temperature probe and D2 chilled mirror sensor which are located in the sample chamber providing not only superior accuracy but the fastest response.

Ordering Information
Model Description Buy Online Price
RH CALEdgetech RH CAL Portable Relative Humidity Calibrator Buy Now$13,200.00

Optional Accessories

RHCAL-DCEdgetech RHCAL-DC Spare Desiccant Canister filled with DrierRite Buy Now$285.00
RHCAL-DR1Edgetech RHCAL-DR1 DrierRite 1 lb Jar Buy Now$45.00
RHCAL-DR5Edgetech RHCAL-DR5 DrierRite 5 lb. jar Buy Now$110.00
RHCAL-CCAEdgetech RH-CAL-CCA Completely Assembled Chamber Cover for the RH-CAL Buy Now$182.00
RHCALCCBEdgetech RHCAL-CCB Chamber covers without holes, set of 3 Discontinued
RHCAL-CKEdgetech RH-CAL-CK Cover Kit for the RH-CAL; Gasket, plastic cover, blank aluminum cover Buy Now$76.00
RHCAL-SREdgetech RHCAL-SR Seals for Sample Chamber, rubber qty. 20 Buy Now$61.00