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Zahner IM7 front view
Modular High End Potentiostat Zahner IM7 - Image 2
Modular High End Potentiostat Zahner IM7 - Image 3
Modular High End Potentiostat Zahner IM7 - Image 4
Modular High End Potentiostat Zahner IM7 - Image 5

Modular High End Potentiostat Zahner IM7

The IM7 is a modular high-end potentiostat / galvanostat including a frequency response analyzer (FRA). The IM7 potentiostat offers 32-bit DC resolution and 24-bit AC resolution across 12 different current ranges, which allows it to carry out precise and accurate measurements.

The IM7x can either be operated by Zahner Lab or by the zahner_link API. The zahner_link libraries communicate with the IM7x via WebSocket connections, exchanging JSON objects. Built with a C++ core, the zahner-link also offers Python bindings for simplified programming.

The main specifications for the IM7 are

  • DC voltage ranges: ±5 V and ±15 V
  • Current up to ±3 A over 12 current ranges
  • EIS frequency range from 10 µHz to 8 MHz
  • Up to 5 parallel channels for EIS (1 PAD42 card)
  • Supported operating systems: Windows, Linux, and macOS
  • Controllable by C++ and Python
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Introduction

General

Overall bandwidthDC - 10 MHz
ADC resolution32-bit DC24-bit AC
Harmonic reject> 60 dB @ ½ full scale
Potentiostat modespotentiostatic, galvanostaticOCP, ZRA, off
Cell connection2-, 3-, 4-terminal kelvin
Ground referencegrounded, floating
Extension slots4
PC interfaceGigabit Ethernet (GbE)
Dimensions (H x W x D)160 x 364 x 376 mm3
Weight11.4 kg
Accessoriesdummy cell, testbox, LoZ cable set, HiZ cable set, ethernet cable (3m), mains cablequickstart installation guide, 3 Zahner Analysis licenses, safety precaution guide
Power supply100/115/230 VAC, 50/60 Hz,300 W
Memory40 GB m.2 SSDSD card slot (for Recovery)
Ambient temperature+10 °C to +30 °C
Ambient humidity< 60% without derating
Storage temperature-20 °C to +85 °C
Operating systemWindows, Linux, and macOS

Input

Maximum input voltage±5.5 V5 V range
±16 V15 V range
AC Voltage resolution3.2 nV5 V range
9.6 nV15 V range
Voltage accuracy±50 µV ±5 ppm of reading5 V range
±150 µV ±15 ppm of reading15 V range
Current resolution±2 aA (32 bit)
Current accuracy±0.5% of reading ±0.2% FS250 mA ... 3 A
±0.05% of reading ±0.02% FS2.5 µA ... 250 mA
±0.5% of reading ±0.2% FS25 nA ... 2.5 µA
±0.5% of reading ±125 fA< 25 nA
Maximum sampling rate900 kHz at up to 2 channels3.0 MSps total sampling rate
Input impedance> 10 TΩ || ±5 pF (typical)
Input leakage current< |200 fA| typ.
< |2 pA| max.
Impedance range10 µΩ to 100 GΩsee accuracy contour plot for detailed information
Common mode rejection> 86 dB @ 10 µHz to 100 kHz
> 66 dB @ 100 kHz to 8 MHz
Input channel phase-tracking accuracy±0.05 ° @ 10 µHz to 100 kHz
±0.125 ° @ 100 kHz to 8 MHz
Equivalent effective input noise1 µV rms / 100 fA rms @ 1 mHz to 10 Hz

Output Potentiostatic

Controlled voltage±5 V
±15 V
Resolution2.5 nV5 V range
7.5 nV15 V range
Accuracy±150 µV ±15 ppm of reading5 V range
±450 µV ±45 ppm of reading15 V range
Integral Nonlinearitytyp. 2 ppm, max. 4 ppm5 V range
typ. 6 ppm, max. 12 ppm15 V range
Compliance voltage±14 VLow compliance voltage mode
±28 VHigh compliance voltage mode
BandwidthDC to 10 MHz @ 33 Ω load
IR compensationauto AC impedance technique
range 0 to 10 MΩ
resolution 0.012%
Small signal rise time150 ns to 200 µs in 5 stepsautomatic selection
Slew rate15 MV/s

Output Galvanostatic

Controlled current±3 A
Current range±2.5 nA to ±3 A in 12 steps
Resolution32 bit, ±0.2 ppb of FS
Accuracy±0.05% of reading ±0.02% of FS≥ 2.5 µA to 250 mA
±0.2% of reading ±0.1% of FS< 2.5 µA or > 250 mA

Frequency Generator & Analyzer

Frequency range10 µHz to 8 MHz
Accuracy< 0.0025%
Resolution0.0025%,
10000 steps/decade
AC voltage amplitude0 to 2 V, 24 bit resolution5 V range
0 to 6 V, 24 bit resolution15 V range
AC current amplitude0 to 2 A, 24 bit resolutionin 12 current ranges

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