I have a Mitutoyo PLL32L ( S/no. 900185 ) Linear scale fitted to a Colchester Chipmaster Lathe with cross slide and bed scales. It used to work 100% before my workshop move. Now when I plug it all in all ( after 2 years in storeage) I get are rows of ------------ on both the upper and lower X & Y readouts. There has been no damage to the equipment, and it shows this same display with or without the scales connected!!.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Ensure your testing procedure is perfect. If your testing procedure is proven, then you will need to send it for repair. At that point, either your scale or grid assembly is damaged or requires adjusting.
Canada's Gauge Repair Specialists
Precision Tool Works - www.precisiontoolworks.com
Mine did this also, I got a replacement and it also read F--H. I took all the screws out - they hid them under the bar code sticker and under the stick-on faceplate where the buttons are - then found that the screws on the load cell which is sort of like an aluminum tuning fork had been tightened so much that the cell was reacting to the screw force, not the scale pad. Release all the pressure and you may be able to make it come alive again. One of my two is working now but calibrating is another thing all together because the linear counting depends on the loadcell screws being set just right.
A dial depth gage should have a set of depth stems. they are in 1" increments. to change the stem, first using a scale, measure the depth of the hole you are checking. Find the stem that falls in that range. remove the cap on the top of the unit, pull the existing stem out and replace it with the stem you need to reach the bottom of the hole. replace the screw-on cap. Set the cross bar of the body on the face of the part. Gently turn the barrel until the stem touches the bottom. the barrel has a 1" range. The numbers represent .1". The lines between the numbers represent .025". One turn of the dial equals .025" Add the length of the stem, the number on the barrel, the number on the dial and the number diall. Example, If the hole measures between 3" and 4" i.e. (3-1/8")start by installing the 3 to 4" stem. Turn the barrel so it reads "0". place the cross bar of the body so it touches the face perpendicular to the hole. Gently turn the barrel of the unit until it stops at the bottom of the hole. Add 3" plus the number on the barrel (.1"), the number of graduations on the barrel, and the number on the dial (.023"). The reading is 3.123". If you know your decimal equivalents, you will know that the hole is .002" short of 3.125" (or 3-1/8" deep.
By simply pushing it (the contact point), it may be stiff to start but should ease up over time. Remember if your doing precision work (0.001mm or seconds of a degree) changing this original position will affect your reading so refer to booklet within original packaging or visit mitutoyo website's (Japan, USA, UK) between them they have most instructions available it's just a question of finding it, Good Luck.
Machinist, Inspector, Tool & Die Maker, for A.B.B Raymond Division, 1987-94
You need a Portable Surface Roughness measuring tool. Mitutoyo is one maker of these. Be prepared for a $$$$$$$$ shock, as these babies aren't cheap!
SJ-201, SJ-301 and SJ-400, are three examples, 1.http://www.directindustry.com/scripts/IDPHeader.php?s=4906&URL=http%3A%2F%2Fwww.mitutoyo.co.jp%2Feng%2Fproducts%2Fkeijyou_hyomen%2Fhyomen_01.html&IDVisite=293213&MotCle=&RefCat=&IDProduit=12095&IDProdSource=&SourceType=Produit (If the above link doesn't work for you, then try this one, http://www.directindustry.com/prod/mitutoyo/roughness-tester-4906-30234.html Scroll down the page, and click on -> Portable Roughness Tester)