ADC-20 and ADC-24

Precision Data Loggers

Multichannel data loggers offering high resolution, high accuracy and programmable input ranges.

ADC-20 & ADC-24 Specifications

  ADC-20 ADC-24
Resolution 20 bits 24 bits
Number of channels# 4 differential / 8 single-ended 8 differential / 16 single-ended
Conversion time (per channel) 660 ms, 340 ms, 180 ms, 100 ms, 60 ms
Voltage ranges ±2500 mV
±1250 mV
±2500 mV
±1250 mV
±625 mV
±312 mV
±156 mV
±78 mV
±39 mV
Accuracy 0.2% 0.1% (±39 mV to 1250 mV range)
0.2% (±2500 mV range)
Noise rejection 120 dB typical at 50/60 Hz
Input impedance Differential: 2 MΩ
Single-ended: 1 MΩ
Common mode input range, channel to common ±1.9 V (±39 mV to ±1250 mV ranges)
±3.0 V (±2500 mV range)
Common mode input range, common to earth ground ±30 V
Common mode rejection ratio, channel to common 95 dB (DC to 60 Hz)
Common mode rejection ratio, common to earth ground > 125 dB (DC to 60 Hz)
Overvoltage protection ±30 V
Digital I/O none 4 bidirectional (3.3 V CMOS)
Output level, high: > 2.40 V
Output level, low: < 0.40 V
Input level, high: > 2.20 V
Input level, low: < 0.88 V
Reference output +2.5 V ±2.5 mV @ 2 mA
+5 V ±1.0 V @ 2 mA
–5 V ±1.5 V @ 2 mA

# The ADC-20 and ADC-24 have four and eight true differential input channels respectively. For flexibility each of these channels can be configured as either one differential channel or two single-ended channels.

PC requirements
Minimum Processor: 1 GHz.
Memory: 512 MB.
Free disk space: 32-bit: 600 MB, 64-bit: 1.5 GB.
Operating system: 32-bit or 64-bit edition of Microsoft Windows 7, Windows 8 or 10.
Ports: USB 1.1.
Recommended Processor: 1 GHz.
Memory: 512 MB.
Free disk space: 32-bit: 850 MB, 64-bit: 2 GB.
Operating system: 32-bit or 64-bit edition of Microsoft Windows 7, 8 or 10.
Ports: USB 1.1 or higher.
For quoted accuracy 20 °C to 30 °C
General operation 0 °C to 45 °C
Relative humidity 5% to 80% RH
Physical properties
Dimensions 135 x 184 x 36 mm (5.31 x 7.24 x 1.41 in)
PicoLog for Windows PicoLog data acquisition software can collect up to 1 million samples. Features include:
Multiple views — view data as a graph, spreadsheet or text
Parameter scaling — convert raw data into standard engineering units
Math functions — use mathematical equations to calculate additional parameters
Alarm limits — program an alert if a parameter goes out of a specified range
IP networking — transfer measurements via a LAN or over the Internet
Operating systems supported: Microsoft Windows 7 to 10
PicoLog languages Full support for: English, Français, Deutsch
Menus and dialogs only for: Italiano, Español, Svenska
Software Development Kit Includes example code.
Optional free software Drivers for Linux and OS X.
Documentation languages
User’s guide
Installation guide

English, Français, Deutsch, Italiano, Español
English, Français, Deutsch, Italiano, Español, Svenska, Nederlandse, Dansk
Additional hardware (supplied) USB 2.0 cable, user manuals, software CD-ROM
PC interface USB 1.1
I/O connector 25-way D female
Power requirements Powered from USB port
Compliance European EMC and LVD standards
FCC Rules Part 15 Class A
Total satisfaction guarantee In the event that this product does not fully meet your requirements you can return it for an exchange or refund. To claim, the product must be returned in good condition within 14 days.
Warranty 5 years