
PP222
Zahner






The IM7x is Zahner's flagship modular potentiostat / galvanostat including a frequency response analyzer (FRA). It offers 32-bit DC and 24-bit AC resolution across 12 current ranges for outstandingly precise measurements.
With an EIS frequency range of 10 µHz to 12 MHz, a compliance voltage of ±32 V and a maximum current of ±4 A, the IM7x is designed for the most demanding electrochemical tasks across fundamental electrochemistry, batteries, fuel and electrolysis cells, and corrosion and coatings.
Plug-and-play cards introduce additional input/control signals to the IM7x potentiostat:
Remote control via C++, Python and WebSocket using the zahner_link library (Ethernet/WebSocket). Multiple potentiostats can be integrated into a test bench to create a multichannel system.
Potentiostatic modes
potentiostatic, galvanostatic, OCP, FRA, ZRA, off
ADC resolution
32-bit DC, 24-bit AC
Harmonic reject
> 60 dB @ ½ full scale
Cell connection
2-, 3-, 4-terminal kelvin
Ground reference
grounded, floating
Channels
≥ 1
Interface
Gigabit Ethernet (GbE)
Dimensions / Weight
160 × 470 × 376 mm³ / 13.2 kg
Power supply
100/115/230 VAC, 50/60 Hz, 400 W
Sent directly to Zahner
Sent directly to Zahner
Ambient temperature / humidity
+10 °C to +30 °C / < 60% without derating
Storage
40 GB m.2 SSD
Operating system
Windows, Linux, and macOS
Software
Zahner Lab, Zahner Analysis
Remote integration
C++, Python, WebSocket (zahner_link / Ethernet)
Max. input voltage — low range
±5.5 V
Max. input voltage — high range
±16 V
Voltage resolution (input) — low range
3.2 nV
Voltage resolution (input) — high range
9.6 nV
Voltage accuracy (input) — low range
±50 µV ±2 ppm of reading
Voltage accuracy (input) — high range
±150 µV ±5 ppm of reading
DC current resolution
2 aA (32-bit)
DC current accuracy
±0.5% of reading ±0.2% of FS @ 300 mA…4 A ±0.05% of reading ±0.02% of FS @ 3 µA…300 mA ±0.5% of reading ±0.2% of FS @ 30 nA…3 µA ±0.5% of reading ±125 fA @ < 30 nA
Input impedance
> 10 TΩ, ±5 pF typ.
Input leakage current
< ±200 fA typ., < ±2 pA max.
Impedance range
10 µΩ to 100 GΩ
Max sampling rate
900 kHz at up to 2 channels, 3 MSps total
Common mode rejection
> 86 dB @ 10 µHz to 100 kHz > 66 dB @ 100 kHz to 12 MHz
Input channel phase-tracking acc.
±0.05° @ 10 µHz to 100 kHz ±0.125° @ 100 kHz to 12 MHz
Equivalent effective input noise
1 µV rms / 100 fA rms @ 1 mHz to 10 Hz
Controlled voltage — low range
±5 V
Controlled voltage — high range
±15 V
Voltage resolution (output) — low range
2.5 nV
Voltage resolution (output) — high range
7.5 nV
Accuracy voltage (output) — low range
±150 µV ±5 ppm of reading
Accuracy voltage (output) — high range
±450 µV ±25 ppm of reading
Integral nonlinearity — low range
typ. 1 ppm, max. 2 ppm
Integral nonlinearity — high range
typ. 3 ppm, max. 8 ppm
Compliance voltage — low range
±16 V
Compliance voltage — high range
±32 V
Bandwidth
DC to 15 MHz @ 33 Ω load
IR compensation
auto AC impedance technique, range 0 to 10 MΩ, resolution 0.012%
Small signal rise time
150 ns to 200 µs in 5 steps, automatic selection
Slew rate
15 MV/s
Controlled current
±4 A
Current range
±3 nA to ±4 A in 12 current ranges
Current resolution (galvanostatic)
32-bit ±0.2 ppb of FS
Current accuracy (galvanostatic)
±0.025% of reading ±0.01% of FS, ≥ 3 µA to 300 mA ±0.1% of reading ±0.05% of FS, < 3 µA or > 300 mA
EIS frequency range
10 µHz to 12 MHz
AC voltage amplitude
0 to 2 V, 24-bit resolution (low range) 0 to 6 V, 24-bit resolution (high range)
AC current amplitude
0 to 2 A, 24-bit resolution, in 12 current ranges
EIS amplitude accuracy
< 0.0025%
EIS amplitude resolution
0.0025%, 10,000 steps/decade
EIS Capability
Yes