products

QM20 - PC based Process Monitor

 EDFelectronics offers so called PC based thickness rate monitors QM20 series, which combine the functionality of an oscillator and measurement converter. All monitors are installed between sensor head and superior control unit (e.g. PC or PLC) on atmosphere. The transducer delivers information about quartz frequency, rate, thickness and crystal health via a serial line like RS232, RS485, USB or PoE QM20 series are available with standard and high resolution.  


The following table provides an overview of available PC based monitors:

QM20-X standard resolution
QM20.png
QM20-X high resolution
QM20.png
Interface: x=2: RS232
x=4: RS485
x=U: USB
x=E: Ethernet / PoE
x=2: RS232
x=4: RS485
x=U: USB
x=E: Ethernet / PoE
Resolution (@ 6MHz): 0.1 Hz 0.01 Hz
Windows® Program included Yes Yes
Crystal supported: 2 2
External oscillator support: Yes - (2) configuration via serial command Yes - (2) configuration via serial command
Rate control: Possible with external control Possible with external control
Shutter control: No No