Selective nanovoltmeter Unipan 233 is designed for measuring very low AC voltages in the range from 1.5 Hz to 150 kHz.

Device can be used:
For measuring low AC voltages amid noise and interference;
For spectral analysis of harmonic and noise processes;
As a highly sensitive indicator of the balance of different bridge AC circuits;
As a measuring amplifier with strip from 0.5 Hz to 400 kHz;
As a broadband microvoltmeter in the range from 1.5 Hz to 150 kHz.

Frequency range: 1.5 Hz to 150 kHz.
Frequency setting error: ±2%.
Measuring range:
1-3-10-30-100-300 μV;
1-3-10-30-100 mV.

Frequency subrange:
1.5 to 5 Hz;
5 to 15 Hz;
15 to 50 Hz;
30 to 150 Hz;
150 to 500 Hz;
0.5 to 1.5 kHz;
1.5 to 5 kHz.
5 to 15 kHz.
15 to 50 kHz.
50 to 150 kHz.

Input impedance:
Resistance - 1 MOhm;
Capacity - 25 pF.
Octave selectivity: 0-18-36-54 dB.
Output resistance - 560 Ohm.
Maximum input voltage: 200 V.

Power supply:
Voltage - 110 to 220 V;
Frequency - 50 Hz.
Power - 10 V∙A.

Ambient temperature: + 15 ° C to + 30 ° C.
Relative humidity: up to 80%.
Atmospheric pressure: 650 to 800 mm Hg.

Dimensions: 445 x 205 x 320 mm (17.5 x 8.1 x 12.6 in.).
Weight: 
Device - 13 kg;
Set - 19 kg.

Condition:
1. Used, from an old stock, has some scratches on the body.
2. It is totally tested in the laboratory and 100% workable. Highly qualified metrology engineers carry out the check-up of every instrument at a specialized laboratory and with the help of master gages.
3. Usually I send unit in 3-15 business days after receiving payment – this time I need for unit testing procedure and preparing reliable packaging. This time depends on the complexity of the device and the workload of the laboratory. We are interested to send as soon as possible.

Shipping details:
Please mind, that I ship from Ukraine (Europe), so the shipping time may differ.
Europe - 7-15 days.
USA, Japan & others - 10-30 days (depends on country).
You'll get your item carefully packed.

Payment details:
I expect payment in 4 days after the auction end.
I accept Paypal payment, as the most safe way of payment. (preferred).
Please tell me if you can’t pay on time, we can always deal. 
When purchasing a few items, you'll save on shipping. 

Return policy:
I accept refunds and returns. If there is something wrong with the device, please inform me in 5 days after receiving it.
I will refund your costs or send you the other item, as you wish. (after I receive the item). 
Please only serious bidders.