QCM comparizon table Model Measurement Application examples Oscilation type Freq. range Freq. resolution Mass range Resonant resistance Res. resolution Gate time(sec) Communication interface ΔF analog output QCM934 ◆Resonance frequency ◆Resonance resistance ◆Measurement chamber(QCM934-550) control ◆4ch simultaneous measurement ◆Measurement of biopolymer interactions, such as protein ◆Real-time monitoring of formation of high molecular and decomposition ◆Structual change monitor of the polymeric material ◆Evaluation of biocompatible materials like titanium Self-exicted 27MHz (3rd harmonic of 9MHz) 0.01Hz 0.35ng/Hz to 2kΩ 0.01Ω 100m/ 1/ 10 USB2.0 - QCA922 ◆Resonance frequency ◆Resonace resistance QCM922A ◆Resonance frequency ◆Resonance resistance ◆Admittance frequency characteristics ◆Input of potential and current ◆Evaluation of a lithium ion secondary battery with EQCM ◆Gas analysis, such as humidity and smell substance ◆Quantitative evaluation of the detergency in surfactant ◆Film thickness measurering in the plating ◆Analysis of structual change by the measurement of the frequency characteristics of the admittance(QCM922A only) Separately-excited 1M to 10MHz 0.1Hz 1ng/Hz to 87ng/Hz to 16kΩ 0.1Ω 100m/ 1/ 10 GPIB, RS-232C Range: ±10V(12bit) Scale：±200Hz to ±200kHz Separately-excited 5M to 30MHz 0.01Hz 0.1ng/Hz to 3.5ng/Hz 1Ω to 10kΩ 0.01Ω 10m/ 20m/ 100m/ 1/ 10 USB 2.0 Range: ±10V(14bit) Scale: ±100Hz to ±500kHz R/ΔR analog output - R range: 0 to +10V(11bit) Scale1/ 2/ 4/ 8/ 16kΩ ΔR range: ±10V(14bit) Scale: ±10Ω to ±10kΩ Analog input - - Channnel: 2ch Range: ±3, 6, 12V(14bit) Software Power supply Power consumption Size(WxDxH)(mm) Weight(kg) WinQCM3.0 AC100 to 240V 50/60Hz Max. 90VA(4CH) 320 x 280 x 133 Approx 5.5 WinECHEM, WinQCM3.0 AC100/120/230/240V 50/60Hz Max. 25VA 260 x 230 x 88 Approx 3.3 WinQCM3.0 AC100 to 240V 50/60Hz Max. 25VA 160 x 160 x 95 Approx 1.2 SEIKO EGG Co.,LTD July 2015 Rev. 1.0