IonAmp - Ion Sensitive / Ion Selective / pH Amplifier

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IonAmp - Ion Sensitive / Ion Selective / pH Amplifier V.3

High precision amplifier to record any electrochemical potential. Every amplifier channel processes two signals from two independent electrodes and the difference of the two signals is composed as output. The two input signals are named as Reference and Ion Sensitive / Ion Selective / pH (it is abbreviated as IS) signal. IonAmp has got DC recording capability (cutoff frequency is 0 Hz) for both input signals. IonAmp amplifier can be configured 1 to several channels modularly.

Single-channel IonAmp with the Headstage. Click on the picture to get it in full size

IonAmp can record signals arisen from the following sources:

• Electrochemical sensor

• Ion-selective electrode

• Ion-sensitive electrode

• Ion-sensitive sensor

• pH electrode

Every IonAmp amplifier is divided into two parts. They are the Main Amplifier and the Headstage. The Main Amplifier is desktop or rack-mounted equipment. Both styles are available. The mechanical construction style of the Main Amplifier depends on the number of the channels and the preference of the user. The Headstage is a small dual-channel preamplifier. The Headstage is built into separated tiny equipment case, because it should be located close to the target, usually in shielded environment. The enclosure of the Headstage is always made of metal to provide a good shielding of the sensitive input circuitry.

The complete User Manual of the IonAmp amplifier is available for download.

Specifications / Technical Data

Ion Sensitive / Ion Selective / pH Input

Monopolar (single-ended)

Input Resistance: >1000 GOhms

Input Capacitance: 100 fF

Voltage Noise (1 MHz): 4.3 nV / sqrt(Hz)

Current Noise (100 kHz): 5.5 fA / sqrt(Hz)

Offset voltage correction range: +/- 900 mV

Offset control method: 10-turn helical potentiometer

Lower cutoff frequency: 0 Hz

Low Pass Filter setting selection:

100 Hz

1 kHz

10 kHz

Gain setting selection:

100

Reference Input

Monopolar (single-ended)

Input Resistance: 1000 GOhms

Input Capacitance: 3.5 pF

Voltage Noise (1 kHz): 7 nV / sqrt(Hz)

Current Noise: 0.56 fA / sqrt(Hz)

Offset voltage correction range: +/- 900 mV

Offset control method: 10-turn helical potentiometer

Lower cutoff frequency: 0 Hz

Low Pass Filter setting selection:

100 Hz

1 kHz

Gain setting selection:

100

The default values of the filter and gain settings of the two signal pathways are listed above. The actual values, what should be realized during the manufacturing process can be ordered with the default parameters, but they can be requested with custom values, to meet any special requirements, as well.

Mains voltage: 100-120V or 220-230V (chosen by an internal selector switch, fixed in the factory)

Power consumption: 30 VA / channel

Picture Gallery of a Few IonAmp Amplifiers

Click on the picture to get it in full size

Single-channel IonAmp Main Amplifier in desktop ...and in rack-mounted case

3-channel IonAmp Main Amplifier

Single-channel ... and 3-channel IonAmp Headstage. In the pictures you can see the shortcut wires, too.

Security Rules

Both inputs are extremely sensitive about static electricity (ESD sensitive). Even a small electric discharge will destroy the input. You must wear an ESD protector bracelet continuously to keep your body on ground potential when you do anything with the Headstage. We provide shortcut wires to keep the inputs always connected to the GND. You should remove these shortcuts just before connecting the electrodes. After disconnecting the electrodes please replace the shortcut wires immediately to the inputs.

The IonAmp amplifier must not be used in human experiments, because it has no European permission for human applications.

Prices

You can find the general warranty and shipping conditions in the beginning of the Services page.

The prices of the different multi-channel IonAmp equipments are calculated according to the following algorithm. If the number of the channels in the system is increased according to the powers of 2, the price concerning one channel (the total price divided by the number of the channels) is always reduced by 16 %.

1-channel IonAmp equipment ISA-1: 1152 EUR (1152 EUR / channel)

2-channel IonAmp equipment ISA-2: 1934 EUR (967 EUR / channel)

4-channel IonAmp equipment ISA-4: 3248 EUR (812 EUR / channel)

The price of the desktop and the rack-mounted equipments are the same.

The first set of Headstage in the same channel number as the Main Amplifier: FREE accessory.

Supertech Instruments does not offer electrodes, but upon request we provide customized input cables to connect your preferred 3rd-party electrodes to the Headstage.