Metrohm 746 VA Trace Analyzer - Manual (Page 562)

8.1 746 VA Trace Analyzer
746 VA Trace Analyzer / 747 VA Stand
8-1
8 Technical data
Subject to changes !
The listed technical data apply to an ambient temperature of 25°C.
8.1 746 VA Trace Analyzer
Brief characterization
Compact control and data acquisition instrument for max. three 747 VA Stands,
a 695 Autosampler and up to four 685 Dosimats or 700 Dosinos with screen,
printer (optional), keypad and 2 bi-directional RS232C interfaces.
Circuitry based on SMD technology, 32-bit microprocessor, 16 MHz clock fre-
quency, 2 MBytes battery-backed SRAM.
Real-time multitasking operating system with dynamic memory management.
Current measurement techniques
DC Direct Current
DP Differential Pulse
SQW Square Wave (10 ... 250 Hz)
AC1 Phase-sensitive Alternating Current 1 st harmonic
(10 ... 250 Hz)
AC2 Phase-sensitive Alternating Current 2 nd harmonic
(10 ... 250 Hz)
PSA Potentiometric Stripping Analysis (chronopotentiometry)
CV Cyclic Voltammetry (digital ramp, 0.1 mV/s ... 100 V/s)
Data acquisition
SWEEP Current I as a function of the voltage U: I = f(U)
Voltage sweep for DC, DP, SQW, AC1, AC2
SSWEEP Current I as a function of the voltage U: I = f(U)
Voltage sweep for DC (if peaks must be evaluated instead
of waves)
FSWEEP Current I as a function of the voltage U: I = f(U)
Voltage sweep for DC, DP, SQW, AC1, AC2
(measurement always in operation mode ”fast”)
PSWEEP Voltage U as a function of the time t: U = f(t)
Voltage sweep for PSA
TSWEEP Current I as a function of the time t: I = f(t)
Current measurement at constant voltage for DC, DP,
SQW, AC1, AC2
RAMP Current I as a function of the voltage U: I = f(U)
Voltage sweep for CV