Tonometer, Calibration check, and Tune Up, Haag Streit Applanation Tonometer, 2018 скачать в хорошем качестве

Tonometer, Calibration check, and Tune Up, Haag Streit Applanation Tonometer, 2018

This video shows, in the first 2 minutes, the basics of how to find out if your applanation tonometer is in calibration. Then I show how to disassemble and lubricate the tonometer mechanism, if needed to restore function. If it is out of calibration, and lubrication does not help, you can send it to the manufacturer to have it tuned up. This video is a merging of three video sections, taken 6 weeks apart. I frequently cut back and forth between the older video and a more recent video. The video includes at least 6 different tonometers in the filming process. Of the 140 Haag-Streit tonometers I inspected in 2018, I found 44 of the tonometers were out of calibration. For 42 of those tonometers, I was able to resolve the calibration problem by lubrication alone. The other 2 tonometers had mechanical problems, that had to be fixed by Haag Streit. (One tonometer had loose parts inside the tonometer, and was then repaired by Haag Streit). For the 42 tonometers (which I fixed by lubrication), the probe was not moving as smoothly as it should. With each of the calibration settings, I would have to decrease the force by 2 to 4 units before the probe would move. Then in the other direction, I would have to go 2 to 4 units beyond the calibration point before the probe would move in the other direction. In some extreme cases, the tonometer was sticking so much, that when testing calibration at 60 units, the probe would not move until I reached 75 in one direction, and 45 in the other direction. For those 42 tonometers, I was able to resolve the calibration by partial disassembly and internal lubrication using REM oil. (Look up REM oil, to find out what it is, and where to get it.) Typically, I was removing the bottom plate from the tonometer, and then two of the side plates. That exposed the internal parts. I then dripped REM oil at the junction of every moving part, where it contacted a different moving part. Then I blotted out the excess oil, and reassembled. When I open a tonometer, usually everything looks normal. Ultimately I was amazed, after REM oil lubrication, the tonometers went back to normal calibration. Apparently, as the lubrication dries out, the mechanism “sticks” in place, until additional force is applied with the dial. Once the internal parts are lubricated, calibration might be completely restored. In another case, I found a lot of debris accumulation around the base of the probe, where it entered the tonometer body. In that case, I had to first clear out the debris, and clean the area thoroughly before the probe could move smoothly. If I get “stuck” during the repair, and nothing helps, then it is off to the manufacturer for servicing. I found a number of brand new tonometers out of calibration while some older tonometers (in use for more than 2 decades) were still functioning normally. +++ Tonometer Repair process, as I experienced it. An optometrist called me, about a tonometer that was out of calibration. When I visited the clinic, I was unable to figure out how to resolve the calibration problem. I then emailed a couple of my fix-it people at Lombart Instruments. They confirmed that NO ONE at Lombart could repair such a tonometer. However, Lombart arranges such repairs with Haag-Streit. The Lombart person (“Ron Lee”) put in a work order. The setup was that I boxed up the tonometer, and shipped it directly to Haag-Streit (in Ohio), and had the work order number posted on the outside of the box. Once the package was received at Haag-Streit, I got an email notice from the shipper that it had arrived. Then, it was nearly a month later, that Haag-Streit had made an estimate of the repairs, and I was notified by Lombart. I signed the authorization (that I agreed to the repair costs), and returned it to Lombart. Just a few days after that, the repairs were completed, and Haag-Streit shipped it directly to me. In this case, Haag-Streit replaced the “Feeler Arm Assembly, and related bearings.” It was expensive. About one-third the cost of a new tonometer, to have the old tonometer rebuilt. While I got a statement of the items repaired by Haag-Streit, the final bill is through my Lombart account. The repair process took just over 1 month time elapsed. +++ I have posted a number of other optical repair videos on YouTube. Yet, in this narrative section, I don’t have the space to list them, due to the 5,000 character limit. To see a listing of other optical repair videos, read the narrative section below a different video, such as — Slit Lamp Maintenance, 2015    • Slit Lamp Maintenance, 2015   .