產品介紹∣EmStat 4S恆電位|恆電流|阻抗分析儀 (FRA 200kHz)

EmStat4S 是一款便攜式 USB 供電的恆電位儀、恆電流儀和電化學阻抗的可選頻率響應分析儀 (FRA 200kHz)。
EmStat4S 有兩個版本：LR（小電流）和HR（大電流）版本。
LR可達 1 nA 的低電流範圍，最高電流10mA；而HR版本非常適合需要高達 200 mA 的最大電流的應用。


	EmStat 4S LR（小電流）	EmStat4S HR（大電流）
Potential range	±3 V	±6 V
Max. compliance voltage	±5 V	±8 V
Current ranges	1 nA to 10 mA (8 ranges)	100 nA to 100 mA (7 ranges)
Max. current	±30 mA	±200 mA
Electrode connections	WE, RE, CE, and ground, 2 mm banana plugs	WE, RE, CE, S, and ground, 2 mm banana plugs

General

model	LR	HR
dc-potential range	±3 V	±6 V
compliance voltage	±5 V	±8 V
maximum current	±30 mA	±200 mA
max. data acquisition rate	1M samples/s

Potentiostat (controlled potential mode)

model	LR	HR
applied potential resolution	100 µV	183 µV
applied potential accuracy	≤ 0.2% ±1 mV offset
current ranges	1 nA to 10 mA 8 ranges	100 nA to 100 mA 7 ranges
measured current resolution	0.009% of CR (92 fA on 1 nA range)
measured current accuracy	≤ 0.2% at Full Scale Range

Galvanostat (controlled current mode)

model	LR	HR
current ranges	10 nA, 1 uA, 100 uA, 10 mA 4 ranges	1 uA, 100 uA, 10 mA, 100 mA 4 ranges
applied dc-current	±3 * CR (current range)
applied dc-current resolution	0.01% of CR	0.0183% of CR
applied dc-current accuracy	<0.4% (gain) + 0.002 * CR (offset)	<0.4% (gain) + 0.002 * CR (offset)
measured dc-potential resolution	96 µV (gain 1) 48 µV (gain 2) 19.2 µV (gain 5) 9.6 µV (gain 10) 4.8 µV (gain 20)	193 µV (gain 1) 96.5 µV (gain 2) 38.5 µV (gain 5) 19.3 µV (gain 10) 9.65 µV (gain 20)
measured dc-potential accuracy	≤ 0.2% ±1 mV offset

FRA / EIS (impedance measurements)

frequency range	10 µHz to 200 kHz
ac-amplitude range	1 mV to 900 mV rms, or 2.5 V p-p

GEIS (galvanostatic impedance measurements)

frequency range	10 µHz to 200 kHz
ac-amplitude range	0.9 * CR A rms

Electrometer

electrometer amplifier input	> 1 TΩ // 10 pF
bandwidth	10 kHz default or 500 kHz for EIS and fast CA/CP

Other

model	LR	HR
electrode connections	WE, RE, CE, and ground, with 2 mm banana plugs	WE, RE, CE, S and ground, with 2 mm banana plugs
housing	aluminum body: 7.2 x 5.5 x 2.6 cm3
weight	+/- 130 g
power + communication	USB-C port
internal storage space	500 MB, equivalent to >15M datapoints

The EmStat4S is a portable USB-powered Potentiostat, Galvanostat, and optional Frequency Response Analyser (FRA) for Electrochemical Impedance Spectroscopy (EIS). The EmStat4S Low Range version is great for applications that require a low current range down to 1 nA, whereas the High Range version is very suitable for applications that need a maximum current of up to 200 mA.

The EmStat4S is available in two versions: the LR (Low Range) and HR (High Range) versions. The following table shows the main differences:


	EmStat 4S LR（小電流）	EmStat4S HR（大電流）
Potential range	±3 V	±6 V
Max. compliance voltage	±5 V	±8 V
Current ranges	1 nA to 10 mA (8 ranges)	100 nA to 100 mA (7 ranges)
Max. current	±30 mA	±200 mA
Electrode connections	WE, RE, CE, and ground, 2 mm banana plugs	WE, RE, CE, S, and ground, 2 mm banana plugs