Services & Calibration

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Quantifit & FitTester 3000 Calibration

The Quantifit and Fit Tester 3000 instruments are calibrated to an NIST traceable standard. These are the only quantitative fit test instruments that are calibrated to an NIST traceable standard.  Calibrating the Quantifit and Fit Tester 3000 on an annual basis can help establish your good faith concerns for employee health and safety.

Click here to order a Quantifit Calibration

Have a FitTester 3000 or other piece of equipment? Please use our Service Return Form for calibration and service needs!

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Cirrus Noise Monitoring

OHD offers on-going service, support, and calibration on all equipment sold. This includes annual calibration for the Cirrus doseBadges and Sound Level Meters.  All parts, accessories, and supplies are available through OHD. Utilize our service return form (located below) to start the calibration/service process!

Service Return Form
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Svantek Calibration & Service

OHD has partnered with our sister company, Sensidyne to offer you state-of-the-art service for all of your Svantek equipment!

Sensidyne’s service team offers repairs and calibration for:

  • Noise Dosimeters
  • Sound Level Meters
  • Sound Monitor Stations
  • Vibration Equipment
Request Service Here
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Returning your equipment for service

Because of the delicate nature of some of the equipment that is returned to OHD, we would recommend that you pack your instruments carefully to prevent damage in transit.

We would be happy to offer advice as to the best method of shipping and packing. If you have any questions, please contact us and we will be pleased to help.

Quantifit- Quantitative Respirator Mask Fit Testing
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Audiometer Calibration

OHD offers in-house or on-site audiometer calibrations for Benson audiometers.

OHD also offers the following audiometer-related services:

  • Calibration of sound booths
  • Acoustic analysis
  • New equipment demonstrations for Benson Medical Instruments
  • Training

In OHD’s commitment to selling and servicing the best products available for occupational health needs, we have partnered with Benson Medical Instruments and we are their exclusive dealer for the southeastern United States (Alabama, Tennessee, Georgia and Florida). Benson Medical audiometers are software/computer-controlled. Since their audiometers utilize the computer, Benson can offer features that their competitors have never considered. Benson has quickly established themselves as the innovative leader for hearing conservation professionals.

Please use the Service Return Form when shipping your audiometer in for calibration.

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Technical Support Program

At OHD, we want to surprise our customers with timely, courteous and helpful assistance. OHD offers free technical support for each current-production instrument sold by the company, as well as many discontinued instruments. We believe that we have the best instruments and should also provide the best support. We believe that the process of obtaining help and support should be easy for our customers and not something that is dreaded.

 See details for our Technical Support Program.

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Software Downloads

You will find the latest versions of all product software here.