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

With up to 24-bit resolution the ADC-20 and ADC-24 USB data loggers are able to detect small signal changes. Features such as true differential inputs, galvanic isolation and software-selectable sampling rates all contribute to a superior noise-free resolution and ensure that your measurements are reliable and accurate.

PicoLog 6  software – straightforward from the start

All Pico data acquisition products come complete with PicoLog 6. This powerful yet flexible data acquisition software allows you to collect, manipulate, analyze, display and export data. 

Designed from the ground up to be intuitive from the outset, PicoLog 6 allows you to set up the logger and start recording with just a few clicks of the mouse, whatever your level of data logging experience.

From here, starting a capture is simple: plug in the logger, add a channel, press Record, and you’re logging! PicoLog 6 also includes a number of additional features to cater for more advanced data logging needs. 

Flexible, multichannel data acquisition

Both the ADC-20 and ADC-24 feature true differential inputs for excellent noise rejection. To give you a very flexible system each differential input can also be configured as two single-ended inputs. With up to eight differential or 16 single-ended inputs on the ADC-24, this flexibility gives you complete control on what type of inputs you use. If you require more channels, you can use multiple PicoLog data loggers on the same PC.

With seven bipolar voltage ranges, the ADC-20 and ADC-24 are also flexible enough to be used with a wide range of sensors and signal types. There's also an external terminal board with screw terminals to allow you to quickly connect and disconnect different sensors.

Additionally, the ADC-24 has four configurable digital input/output channels that can be used to control alarms or other devices.

The flexibility of the ADC-20 and ADC-24 allows you to use these precision data loggers as an advanced multichannel data acquisition system with a low cost per channel.

No need for power supplies or batteries

The high-resolution ADC-20 and ADC-24 are powered directly by your PC — eliminating the need for batteries or a separate power supply, and making them ideal when you need a portable data logger.

The answer to your data acquisition needs

High resolution, true differential inputs, galvanic isolation, and selectable sampling rates combine to ensure that your measurements are always precise and accurate. Configurable inputs, digital inputs and outputs, and programmable voltage ranges give you a truly flexible answer to your data acquisition needs.

When you need the ultimate in high resolution and accuracy, the versatile ADC-20 and ADC-24 provide you with a portable answer with the performance and flexibility you need.

  • 24-bit resolution
  • Up to 8 true differential inputs
  • Up to 16 single-ended inputs
  • 7 input ranges (±39 mV to ±2500 mV) 
  • Fast conversion time
  • Digital outputs for control
  • Galvanic isolation from the PC to eliminate noise pickup
  • PicoLog data acquisition software included
  • Software drivers and SDK included

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.


Noise-free resolution and conversion time

Conversion time per channel

Voltage ranges & noise-free resolution (bits) for the full range of conversion times

 

±39 mV

±78 mV

±156 mV

±313 mV

±625 mV

±1250 mV

±2500 mV

 

ADC-24 only

ADC-20 and ADC-24

660 ms

17

18

19

20

20

20

20

340 ms

17

18

19

19

19

20

20

180 ms

16

17

18

19

19

19

19

100 ms

16

17

18

18

18

19

19

60 ms

15

16

17

18

18

18

18

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.

 

Environmental

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)

 

Software

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 macOS.

Documentation languages

Documentation
User’s guide
Installation guide


English, Français, Deutsch, Italiano, Español
English, Français, Deutsch, Italiano, Español, Svenska, Nederlandse, Dansk

 

General

Additional hardware (supplied)

USB 2.0 cable, Quick Start Guide

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

Product name

Description

ADC-20 Data Logger

8 channel, 20-bit resolution precision data logger

ADC-20 Data Logger including terminal board.      

8 channel, 20-bit resolution precision data logger including terminal board

ADC-24 Data Logger

16 channel, 24-bit resolution precision data logger

ADC-24 Data Logger including terminal board

16 channel, 24-bit resolution precision data logger including terminal board

Accessories

ADC-20/24 terminal board
Calibration certificate for voltage input data logger

ADC-20 and ADC-24 Manuals

Resource Language Version Size Updated
Data Sheets:
ADC-20 and ADC-24 Data Sheet English 1 2 MB November 22 2018
User's Guides:
ADC-20 and ADC-24 User’s Guide (including Programmer’s Guide) English 6 1 MB June 07 2016
ADC-20/ADC-24 Terminal Board User’s Guide English 6 659 KB July 13 2016
Quick Start Guides:
USB Data Logger Quick Start Guide English
Français
Deutsch
Italiano
Español
中文 (简体)
한국어
日本語
8 1 MB January 17 2012
Training Guides:
PicoLog Frequently Asked Questions English 2 932 KB October 10 2016
Declarations:
ADC-20 and ADC-24 EU Declaration of Conformity English 4 421 KB March 01 2018