Thickness and rate PC based monitor

Quartz monitors


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.

Our QM20 comes in 8 versions:

QM20-2-S

QM20-2-H

QM20-4-S

QM20-4-H

QM20-U-S

QM20-U-H

QM20-E-S

QM20-E-H

Interface

RS232

RS232

RS232

RS232

RS232

RS232

RS232

RS232

Resolution (@6MHz)

0.1 Hz

0.01 Hz

0.1 Hz

0.01 Hz

0.1 Hz

0.01 Hz

0.1 Hz

0.01 Hz

PC Software Windows®

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Supported crystals

2

2

2

2

2

2

2

2

Built-In oscillator

Yes, one  channel*

Yes, one channel*

Yes, one channel*

Yes, one channel*

Yes, one channel*

Yes, one channel*

Yes, one channel*

Yes, one  channel*

External oscillator support

Yes, two Channels

Yes, two Channels

Yes, two Channels

Yes, two Channels

Yes, two Channels

Yes, two Channels

Yes, two Channels

Yes, two Channels

Shutter control

No

No

No

No

No

No

No

No

* Two Built-In oscilators possible on request​

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