
Calibration
AutoSet 1500 User Manual
24
Ch 3
1088500
Types of calibration kits you can use
As noted earlier, you must use a separate tonnage monitor with a calibration kit to calibrate
AutoSet. You first connect this tonnage monitor to the load cells. Then you apply tonnage
to the load cells and display the tonnage on this monitor. Finally, you adjust the AutoSet
until it displays the same tonnage. You can use either a Wintriss Load Analyzer (WLA)
with calibration kit or another AutoSet 1500 with calibration kit to read the tonnage applied
to the load cells. How to use each type of calibration kit is described below.
How many load cells to use
Use one load cell (single point calibration) if your press has only one connecting rod. The
load cell is placed under the rod. If your press has two (or more) connecting rods, use at
least two load cells (double point calibration). Both methods are covered below.
How to begin
The calibration procedure is divided into four parts:
•
Zeroing your AutoSet Plus
•
Setting up and adjusting the Wintriss Load Analyzer (WLA) calibration kit.
•
Setting up and adjusting an AutoSet 1500 calibration kit.
•
Calibrating your AutoSet 1500
First follow the procedure for setting up and adjusting the calibration unit you are using.
Then go directly to the section titled "Calibrating your AutoSet 1500".
Zeroing strain links
1. Before you can adjust the AutoSet 1500 to the tonnage on your calibration unit,
you have to set the strain links to read zero (0) at no load.
First, make sure there is no load on the load cells. Move the ram to top dead
center if not already there.
2. Make sure the strain link mounting screws are loose. There can be no stress on the
link. You will zero and tighten links to the frame at the same time. (Remember
you left the strain links loose in the installation procedure—this is why.)
NOTE:
If you did not put Loctite no. 242 (or equivalent) on the mounting screws
when following the installation procedure, do so now.
3. Apply power to AutoSet if not already on.
4. Find the toggle switch S2, which is just above the three tonnage setting switches
at the right side of the board. S2 is labeled “For Calibration” in Figure 2-2.
Switch it to the “Zero Set” position. The displays will be lit. The top load LED
displays will show numbers. The bottom setpoint LED displays will show dashes
or the letters "HI" or "LO."
5. Start with the left strain link. Remove its two cover screws and pull the cover off.