The information in this FAQ applies to the following:

• ProHelp® EPM, Releases 5.2.2, 5.2.1, 5.2.0, 5.1.0, 5.0.0

The information in this FAQ does not apply to MIUs. This information only applies to IMACs. IMACs are an obsolete data collection device that were previously distributed by EPOS Corporation.

It is recommended that you calibrate IMACs while the machine is down and operating in a manual mode.

Thermocouples at the IMAC read degrees in Celsius. This is accomplished with a range of one and a base of zero. To read Fahrenheit, set the range to 1.8 and the base to 32. For a linear device, such as a Cavity Pressure Transducer or a Linear Pot, set the range to the maximum value. For example, a 20-inch pot would have a range of 20 and a 5000-PSI Cavity Transducer would have a range of 5000. The base for both devices would be zero. Digital inputs are required to have a range of one and a base of zero. This is accomplished in the following manner:

• Using the PC's Main Menu, select Edit Facilities.


• Click the Site Menu and select Machine Calibration.


• To the left of the page is a list of all machines and to the right are all the selected parameters for each machine. Select the uncalibrated machine and press Edit. You may now edit the base and range of the process parameters.

For example, assume an IMAC 5000 reads a Zone 1 temperature of 540 degrees F with an existent base of 32 and a range of 1.8. To make the IMAC display a temperature of 532, change the base value to 24. To make the IMAC display a temperature of 551, change the base value to 43.

Transducers should be calibrated at the machine after the appropriate range is set in the software.

IMAC 4000 and IMAC 5000

Press Points, then use the Next/Prev keys to display the process parameter that needs calibration. Pressing the "-" key will allow you to enter the actual low point of that process. Pressing the "+" key will allow you to enter the actual high point of the process. To calculate the new calibrated value, press the "=" key.

For example, assume you have an Injection pressure transducer with a zero to 3000 PSI rating. In the software you would have a range of 3000. At the IMAC you would press Points and then press Prev to select Injection PSI. Decrease the injection pressure to the low stage in a manual mode of operation, read that value, then press "-" to record the actual low value. Increase the injection pressure to the high stage, read the value, then press "+" to record the actual high value. Only select the range of pressure the machine operates at, not the entire range of the transducer. Press the "=" to calibrate.

IMAC 6000 and IMAC 7000

At the Main Menu press (F10) Miscellaneous Entries then (F8) Input Calibration. Use the Next/Prev key to select the process parameter that needs calibration. Pressing (F1) Low Point allows you to enter the actual low point of the process. Pressing (F2) High Point allows you to enter the actual high point of the process. To calculate that process press (F3) Calculate New Calibration Factors.