Thin Film Measurement

Measurement Transducer QMB6

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The QMB6 quartz measurement box combines simplicity of operation with unrivaled accuracy in a compact form factor, delivering precise measurements at up to 0.01 Hz frequency resolution for 2 sensor channels.

You can purchase the Measurement Transducer QMB6 directly in our Onlineshop.

Features & Benefits

  • 2 independent measurement channels
  • High frequency resolution of up to 0.01 Hz
  • ModBUS protocol for ease of integration
  • 4 communication interface options: RS232/RS485, USB or Ethernet (PoE)
  • Includes low noise integrated oscillator
  • Unmatched low-cost compact unit performance
  • All connecting cables, power supply and Windows Software included

Quartz sensors can be either directly connected utilizing the integrated low noise oscillator or linked via external oscillators when the QMB6 is installed at larger distance from the sensor.
The QMB6 is available with 4 hardware communication standards RS232/485, USB and LAN/Ethernet with PoE option. The latter simplifies installation in an Ethernet infrastructure network.
Monitoring and data logging can be performed by either using the supplied Windows software or by integration into a host environment utilizing the industry standard ModBUS protocol.

Software Screenshots

Connection examples

Messfrequenz4 - 6 MHz
Messauflösung0,1 Hz bei 10 Samples/s (Standardversion)
0,01 Hz bei 10 Samples/s (High resolution Version)
Samplingfrequenz0,5 bis 10 Hz
Referenzfrequenzstabilität0,5 ppm
Sensoreingänge2 x BNC weiblich
SchnittstellenRS-232, RS-485, USB, Ethernet (PoE)
Versorgungsspannung12 - 24 V DC bei RS-232/RS-485;
5 V DC bei USB
48 V DC bei LAN/Ethernet, PoE IEEE 802.3af
Versorgungsstrommax. 500 mA für beide Kanäle
Betriebstemperatur15 °C bis 40 °C
Maße106.5 mm x 61.3 mm x 26 mm (RS-232/RS-485 Version)
96.4 mm x 61.3 mm x 26 mm (USB Version)
116.4 mm x 61.3 mm x 26 mm (Ethernet Version)
Gewicht~0,2 kg
Windows Software (beiliegend)Erlaubt Datenaufzeichnung für bis zu 253 Geräte, Ethernet Option ermöglicht unbegrenzte Geräte; alle Servicefunktionen, inkl. Einstellung der IP Adresse, Rücksetzen auf Werkseinstellungen und Firmware Upgrades



Passive external oscillator incl. 10 cm BNC cable (BT-QM-EO)


Mounting brackets for QMB6 or oscillator (BT-QM-MBS/BT-QM-EO-MBS)

Accessories cables

BNC cable

Accessory test quartz crystal

Test quartz crystal