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4-20 mA Current Loop Data Logger

4-20 mA current loop data loggers capture sensor and control data that vary current as a function of measured parameters. Measurements from process current loops are popular in many applications for load, pressure, torque and other mechanical parameters. DATAQ Instruments is an expert in data loggers for process current data applications, and offers a wide range of product solutions for any application. Most products shown here are voltage mode input devices, but are easily converted to measure 4-20 mA with an inexpensive external shunt resistor that we sell as an accessory (model R250.) This application note shows you how: Learn more about 4-20mA current loop measurements.

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Deployment

Stand-alone Capability
PC-connected Only

Data Storage

PC
Internal
USB Flash
SD Card
Cloud

Live Display

PC
On-board Digital
On-board Graphing
None

Channels

1 Channel
4 Channels
8 Channels
10 Channels
16 Channels
20 Channels
32 Channels
Expandable

Interface

USB
Ethernet

Voltage Measurements Supported

±10V
±10mV to ±10V
±200mV to ±10V
±1.25V to ±10V
±2.5V to ±10V
±10mV to ±50V
±10mV to ±60V
±20mV to ±100V
±2V to ±100V
±10mV to ±1000V

Reset

Data Logger Categories

Data Logger Brands

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DI-1100
USB Data Acquisition Starter Kit
$59
DI-1100 Data Acquisition Starter Kit
  • 4 differential armored analog inputs
  • 12-bit measurement resolution
  • ±10 V fixed measurement range
  • 20-40 kHz sample rate per channel
  • Includes WinDaq software
  • Includes .NET Class
  • Fully documented command protocol
Go to Product Page
DI-1110
USB Data Acquisition Starter Kit
$89
DI-1110 Data Acquisition Starter Kit
  • 8 differential armored analog inputs
  • 12-bit measurement resolution
  • ±10 V measurement range
  • 7 digital I/O ports with rate and count
  • 160 kHz sample rate
  • Includes WinDaq software
  • Includes .Net class
Go to Product Page
DI-1120
USB Data Acquisition Starter Kit
$178
DI-1120 Data Acquisition Starter Kit
  • 4 differential armored analog inputs
  • Expandable using ChannelStretch™
  • 14-bit measurement resolution
  • ±2V to ±100V range
  • 160 kHz sample throughput rate
  • Includes WinDaq ready-to-run software and .NET Class
Go to Product Page
Model DI-245
Voltage and Thermocouple DAQ
$299
DI-245 Voltage and Thermocouple Data Acquisition System
  • 4 differential and isolated channels
  • Programmable Voltage or thermocouple type per channel
  • ±10mV to ±50V measurement range
  • Supports types J, K, T, B, R, S, E, N
  • Includes WinDaq and fully documented command protocol
Go to Product Page
Model DI-2108
High Speed USB DAQ
$279
DI-2108 High Speed Data Acquisition System
  • 8 differential analog inputs
  • ±10V measurement range
  • Up to 220 kHz throughput
  • 16-bit measurement resolution
  • 7 Digital Ports with rate and count
  • Stand-alone capability records data to USB thumb drive
  • Includes WinDaq and .Net class
Go to Product Page
DI-4108-U
High Speed USB DAQ
$349
DI-4108 High Speed Data Acquisition System
  • 8 differential analog inputs
  • Expandable using ChannelStretch™
  • 16-bit measurement resolution
  • ±200mV to ±10V measurement range
  • 160 kHz analog throughput rate
  • Stand-alone capability records data to USB thumb drive
  • Includes WinDaq and .Net class
Go to Product Page
DI-4208-U
High Speed USB DAQ
$349
DI-4208 High Speed Data Acquisition System
  • 8 differential analog inputs
  • Expandable using ChannelStretch™
  • 16-bit measurement resolution
  • ±2 to ±100 V measurement range
  • 160 kHz analog throughput rate
  • Stand-alone capability records data to USB thumb drive
  • Includes WinDaq and .Net class
Go to Product Page
DI-4108-E
High Speed Ethernet DAQ
$399
DI-4108 High Speed Data Acquisition System
  • 8 differential analog inputs
  • Expandable using ChannelStretch™
  • 16-bit measurement resolution
  • ±200mV to ±10V measurement range
  • 160 kHz analog throughput rate
  • Stand-alone capability records data to USB thumb drive
  • Includes WinDaq software
Go to Product Page
DI-4208-E
High Speed Ethernet DAQ
$399
DI-4208 High Speed Data Acquisition System
  • 8 differential analog inputs
  • Expandable using ChannelStretch™
  • 16-bit measurement resolution
  • ±2 to ±100 V measurement range
  • 160 kHz analog throughput rate
  • Stand-alone capability records data to USB thumb drive
  • Includes WinDaq software
Go to Product Page
DI-2108-P
High Speed USB DAQ
$349
DI-2108-P High Speed Data Acquisition System
  • 8 differential analog inputs
  • Expandable using ChannelStretch™
  • 16-bit measurement resolution
  • Programmable measurement ranges
  • 160 kHz throughput
  • 7 Digital Ports with rate and count
  • Includes WinDaq/Lite software
Go to Product Page
DI-2008
V, mV, Thermocouple, Pulse DAQ
$499
DI-2008 USB Voltage and Thermocouple Data Acquisition System
  • 8 differential and isolated channels
  • Voltage or TC type per channel
  • Expandable using ChannelStretch™
  • 16-bit measurement resolution
  • ±10mV to ±50V measurement range
  • Rate and count inputs
  • Includes WinDaq/Lite software
Go to Product Page
EL-USB-4
Stand-alone Current Data Logger
$89.99
EL-USB-4 Stand-alone Current Data Logger
  • 4-20mA measurement range
  • Long-life lithium battery-operated
  • 9-hours to >2-year record time
  • Time and date stamps all data
  • Easy export to Excel
  • Includes a set of alligator clips
  • Ready to go…nothing else to buy
Go to Product Page
DI-710-UH
USB Data Acquisition
$499
DI-710 Data Acquisition and Data Logger Systems
  • 16 analog inputs
  • 4800 Hz max sample rate
  • ±1.25 V to ±10 V programmable ranges
  • Measure environmental temperature
    & humidity with HMP60 probe
  • Includes WinDaq software
Go to Product Page
DI-710-UL
USB Data Acquisition
$499
DI-710 Data Acquisition and Data Logger Systems
  • 16 analog inputs
  • 4800 Hz max sample rate
  • ±10 mV to ±10 V programmable ranges
  • Better than 2 μV resolution on the 10 mV range
  • Includes WinDaq software
Go to Product Page
DI-710-EH
Ethernet Data Acquisition
$599
DI-710 Data Acquisition and Data Logger Systems
  • 16 analog inputs
  • 4800 Hz max sample rate
  • ±1.25 to ±10 V programmable ranges
  • Measure environmental temperature
    & humidity with HMP60 probe
  • LAN-compatible Ethernet interface
  • Includes WinDaq software
Go to Product Page
DI-710-EL
Ethernet Data Acquisition
$599
DI-710 Data Acquisition and Data Logger Systems
  • 16 analog inputs
  • 4800 Hz max sample rate
  • ±10mV to ±10V programmable ranges
  • Better than 2 μV resolution on the 10 mV range
  • LAN-compatible Ethernet interface
  • Includes WinDaq software
Go to Product Page
DI-710-UHS
Stand-alone USB Data Logger
$599
DI-710 Data Acquisition and Data Logger Systems
  • 16 analog inputs
  • 14.4 kHz max sample rate
  • ±1.25 V to ±10 V programmable ranges
  • Records to PC or SD memory
  • Measure environmental temperature
    & humidity with HMP60 probe
Go to Product Page
DI-710-ULS
Stand-alone USB Data Logger
$599
DI-710 Data Acquisition and Data Logger Systems
  • 16 analog inputs
  • 14.4 kHz max sample rate
  • ±10 mV to ±10 V programmable ranges
  • Records to PC or SD memory
  • Better than 2 μV resolution on the 10 mV range
Go to Product Page
DI-718B-U
USB Data Acquisition
$595
DI-718B Data Acquisition and Data Logger Systems
  • 8 analog inputs
  • 4800 Hz max sample rate
  • Uses isolated 8B amplifier modules
  • Makes any industrial measurement
  • Small form factor fits into tight spaces
  • Wide power supply range (9-36 Vdc)
  • Includes WinDaq software
Go to Product Page
DI-4718B-U
USB Data Acquisition
$695
DI-4718B Data Acquisition and Data Logger Systems
  • 8 analog inputs
  • 160 kHz max sample rate
  • Any industrial measurement
  • Uses isolated 8B amplifier modules
  • Records to PC or flash memory
  • Expandable using ChannelStretch™
  • Includes WinDaq software
Go to Product Page
DI-718B-US
Stand-alone USB Data Logger
$695
DI-718B Data Acquisition and Data Logger Systems
  • 8 analog inputs
  • Up to 14.4 kHz max sample rate
  • Any industrial measurement
  • Uses isolated 8B amplifier modules
  • Records to PC or SD memory
  • Small form factor fits into tight spaces
  • Includes WinDaq software
Go to Product Page
DI-710-EHS
Ethernet Data Acquisition
$799
DI-710 Data Acquisition and Data Logger Systems
  • 16 analog inputs
  • 14.4 kHz max sample rate
  • ±1.25 to ±10 V programmable ranges
  • Records to PC or SD memory
  • Measure environmental temperature
    & humidity with HMP60 probe
  • Includes WinDaq software
Go to Product Page
DI-710-ELS
Ethernet Data Acquisition
$799
DI-710 Data Acquisition and Data Logger Systems
  • 16 analog inputs
  • 14.4 kHz max sample rate
  • ±10mV to ±10V programmable ranges
  • Records to PC or SD memory
  • Better than 2 μV resolution on the 10 mV range
  • Includes WinDaq software
Go to Product Page
DI-4718B-E
Ethernet Data Acquisition
$795
DI-4718B Data Acquisition and Data Logger Systems
  • 8 analog inputs
  • 160 kHz max sample rate
  • Any industrial measurement
  • Uses isolated 8B amplifier modules
  • Records to PC or flash memory
  • Expandable using ChannelStretch™
  • Includes WinDaq software
Go to Product Page
DI-718B-E
Ethernet Data Acquisition
$795
DI-718B Data Acquisition and Data Logger Systems
  • 8 analog inputs
  • 4800 Hz max sample rate
  • Any industrial measurement
  • Uses isolated 8B amplifier modules
  • Small form factor fits into tight spaces
  • Wide power supply range (9-36 Vdc)
  • Includes WinDaq software
Go to Product Page
DI-718B-ES
Stand-alone Ethernet Data Logger
$895
DI-718B Data Acquisition and Data Logger Systems
  • 8 analog inputs
  • 14.4 kHz max sample rate
  • Any industrial measurement
  • Uses isolated 8B amplifier modules
  • Records to PC or SD memory
  • Small form factor fits into tight spaces
  • Includes WinDaq software
Go to Product Page
DI-808
Web-based Data Logger
$995
DI-808 Voltage and Thermocouple Data Logger
  • Works with any smart device
  • TC, mV, V, pulse inputs
  • Advanced triggering functions
  • Alarm outputs with email/text alerts
  • Manage, receive and retrieve data from virtually anywhere
Go to Product Page
GL240
Stand-alone USB data logger
$995
GL240 Stand-alone USB data logger
  • 10 isolated analog/4 counter channels
  • Sample intervals from 10ms to 1 hour
  • ±20mV to ±100V programmable ranges
  • Supports TC measurements
  • Record to PC, USB drive, flash
  • Measure RH model B-530
Go to Product Page
DI-718Bx
Ethernet Data Acquisition
$1395
DI-718Bx Data Acquisition and Data Logger Systems
  • 16 analog inputs
  • 4800 Hz max sample rate
  • Any industrial measurement
  • Uses isolated 8B amplifier modules
  • Includes WinDaq software
  • Wide power supply range (9-36 Vdc)
  • Provided with ActiveX Control set
Go to Product Page
DI-720-USB
USB Data Acquisition
$1395
DI-720 Data Acquisition Systems
  • 32 analog inputs
  • 200 kHz max sample rate
  • Supports 8B industrial amplifier backpack
  • ±1.25 to ±10 V programmable ranges
  • Includes WinDaq software
  • Wide power supply range (9-36 Vdc)
Go to Product Page
DI-718BxS
Stand-alone Ethernet Data Logger
$1495
DI-718Bx Data Acquisition and Data Logger Systems
  • 16 analog inputs
  • 14.4 kHz max sample rate
  • Any industrial measurement
  • Uses isolated 8B amplifier modules
  • Records to PC or SD memory
  • Includes WinDaq software
  • Wide power supply range (9-36 Vdc)
Go to Product Page
DI-720-EN
Ethernet Data Acquisition
$1590
DI-720 Data Acquisition Systems
  • 32 analog inputs
  • 160 kHz max sample rate
  • ±1.25 to ±10 V programmable ranges
  • Supports 8B industrial amplifier backpack
  • Supports distributed synchronized operation
Go to Product Page
GL840-M
Stand-alone Data Logger
$2345
GL840 Stand-alone USB data logger
  • 20 isolated analog/4 counter channels
  • 60V common mode voltage
  • ±20mV to ±100V programmable ranges
  • Supports TC measurements
  • Record to PC, USB drive, flash
  • Measure RH with model B-530
Go to Product Page
DI-730-EN
Ethernet Industrial Data Acquisition
$3390
DI-730 Industrial Data Acquisition Systems
  • 8 isolated wide range channels
  • ±10mV to ±1000V programmable ranges
  • Supports 8B isolated amplifier backpack
  • 150 kHz max sample rate
  • Distributed synchronized operation
Go to Product Page
DI-730-USB
USB Industrial Data Acquisition
$3195
DI-730 Industrial Data Acquisition Systems
  • 8 isolated wide range channels
  • ±10mV to ±1000V measurement ranges
  • Supports 8B industrial amplifier backpack
  • 150 kHz max sample rate
  • Small, highly portable form factor
Go to Product Page
DI-788
Ethernet Industrial Data Acquisition
$3995
DI-785 and DI-788 Industrial Data Acquisition System
  • 32 isolated analog channels
  • Any industrial measurement
  • 150 kHz max sample rate
  • Uses isolated 8B amplifier modules
  • Supports distributed synchronized operation
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Click on column head to sort.

Model Interface Resolution Channels Channel Expansion Max Sample Rate Display Data Storage Measurement
Range		 Price
DI-1100 USB 12-bit 4 No 20,000 S/s/Ch PC PC ± 10V $59.00
DI-1110 USB 12-bit 4 or 8 No 160,000 S/s Throughput PC PC ± 10V $89.00
DI-1120 USB 12 to 14-bit 4 Yes 160,000 S/s Throughput PC PC ± 2V to ± 100V $178.00
DI-245 USB 16-bit 4 No 2,000 S/s Throughput PC PC ± 10mV to ± 50V $299.00
DI-2108 USB 12 to 16-bit 4 or 8 No 2,000 S/s Throughput PC PC or USB Flash ± 10V $279.00
DI-4108-U USB 12 to 16-bit 4 or 8 Yes 160,000 S/s Throughput PC PC or USB Flash ± 200mV to ± 10V $349.00
DI-4208-U USB 12 to 16-bit 4 or 8 Yes 160,000 S/s Throughput PC PC or USB Flash ± 2V to ± 100V $349.00
DI-2108-P USB 16-bit 4 or 8 Yes 160,000 S/s Throughput PC PC ± 2.5V to ± 10V; 0-5V, 0-10V $349.00
DI-4108-E USB and Ethernet 12 to 16-bit 4 or 8 Yes 160,000 S/s Throughput PC PC or USB Flash ± 200mV to ± 10V $399.00
DI-4208-E USB and Ethernet 12 to 16-bit 4 or 8 Yes 160,000 S/s Throughput PC PC or USB Flash ± 2V to ± 100V $399.00
DI-2008 USB 16-bit 8 Yes 200 S/s Throughput
2000 S/s with single channel		 PC PC ± 10mV to ± 50V $499.00
EL-USB-4 USB 0.05 mA 1 No 1 S/s None Internal 4-20mA $89.99
DI-710-UH USB 14-bit 8DI/16SE No 4,800 S/s Throughput PC PC ± 1.25V to ± 10V $499.00
DI-710-UL USB 14-bit 8DI/16SE No 4,800 S/s Throughput PC PC ± 10mV to ± 10V $499.00
DI-710-EH Ethernet 14-bit 8DI/16SE No 4,800 S/s Throughput PC PC ± 1.25V to ± 10V $599.00
DI-710-EL Ethernet 14-bit 8DI/16SE No 4,800 S/s Throughput PC PC ± 10mV to ± 10V $599.00
DI-710-UHS USB 14-bit 8DI/16SE No 14,400 S/s Throughput PC PC or SD Card ± 1.25V to ± 10V $599.00
DI-710-ULS USB 14-bit 8DI/16SE No 14,400 S/s Throughput PC PC or SD Card ± 10mV to ± 10V $599.00
DI-718B-U USB 14-bit 8 No 4,800 S/s Throughput PC PC ± 10mV to ± 60V $595.00
DI-4718B-U USB 12 to 16-bit 8 Yes 160,000 S/s Throughput PC PC or USB Flash ± 10mV to ± 60V
DI-8B module dependent		 $695.00
DI-718B-US USB 14-bit 8 No 14,400 S/s Throughput PC PC or SD Card ± 10mV to ± 60V
DI-8B module dependent		 $695.00
DI-710-EHS Ethernet 14-bit 8DI/16SE No 14,400 S/s Throughput PC PC or SD Card ± 1.25V to ± 10V $799.00
DI-710-ELS Ethernet 14-bit 8DI/16SE No 14,400 S/s Throughput PC PC or SD Card ± 10mV to ± 10V $799.00
DI-4718B-E USB and Ethernet 12 to 16-bit 8 Yes 160,000 S/s Throughput PC PC or USB Flash ± 10mV to ± 60V
DI-8B module dependent		 $799.00
DI-718B-E Ethernet 14-bit 8 No 4,800 S/s Throughput PC PC ± 10mV to ± 60V $795.00
DI-718B-ES Ethernet 14-bit 8 No 14,400 S/s Throughput PC PC or SD Card ± 10mV to ± 60V
DI-8B module dependent		 $895.00
DI-808 Ethernet 16-bit 8 No 40 S/s/Ch Browser Internal, USB flash, Cloud TC Types J, K, T, B, R, S, E, N
± 10mV to ± 50V		 $995.00
GL240 USB and Ethernet 16-bit 10 No 100 S/s/Ch Graphing and Digital PC, SD Card, Internal ± 20mV to ± 100V $995.00
DI-718Bx Ethernet 14-bit 16 No 4,800 S/s Throughput PC PC ± 10mV to ± 60V $1395.00
DI-718Bx-S Ethernet 14-bit 16 No 14,400 S/s Throughput PC PC or SD Card ± 10mV to ± 60V
DI-8B module dependent		 $1495.00
DI-720-USB USB 14-bit 16DI/32SE No 200,000 S/s Throughput PC PC ± 1.25V to ± 10V $1395.00
DI-720-EN Ethernet 14-bit 16DI/32SE Yes 180,000 S/s Throughput PC PC ± 1.25V to ± 10V $1590.00
GL840-M USB and Ethernet 16-bit 20 to 200 Yes 100 S/s/Ch Graphing and Digital PC, SD Card, Internal ± 20mV to ± 100V $2345.00
DI-730-USB USB 14-bit 8 No 150,000 S/s Throughput PC PC ± 10mv to ± 1000V $3195.00
DI-730-EN Ethernet 14-bit 8 Yes 150,000 S/s Throughput PC PC ± 10mv to ± 1000V $3390.00
DI-788 Ethernet 14-bit 32 Yes 180,000 S/s Throughput PC PC ± 10mv to ± 60V $3995.00

Videos

Learn how to make 4-20mA current measurements using the R250 shunt resistor.