4-20 mA Process Current Loop Data Acquisition

DATAQ Instruments offers a wide range of environmental 4-20 mA current loop data acquisition products for any application and budget. Choose from Ethernet or USB interfaces, and stand-alone or PC-connected configurations. Included software acquires, displays, reviews, and exports data with ease and without programming. Our hardware and software combinations take you from concept to results in minutes. 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.

R250

4-20mA Current Loop Shunt Resistor

$ 2.99

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Description

250 Ω ±0.1% Precision, Metal Film, 1/2W, Axial Resistor
Exceptionally low noise; typically 0.10 μV/V
Low voltage coefficient to ±5 ppm/V
Flame retardant coating. RoHS compliant. Learn More

High Accuracy -14.5 to 10000 PSI
4-20mA Output Pressure Transducer
$79

• -14.5 to 10000 PSI
• Accuracy: 0.5%
• 8-30V Supply
• 4-20mA Linear Output
• Shunt Resistor Included
• Connector and cable included

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DI-808
Web-based Data Logger
Starting at $995

• Works with Any device
• Manage and retrieve data from Anywhere, Anytime
• TC, mV, V, pulse inputs
• Advanced triggering functions
• Alarm outputs with email/text alerts
• Record to Internal or Flash Drive
• 15V supply for 4-20mA sensors

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DI-2008
V, mV, Thermocouple, Pulse DAQ
Starting at $599.00

• 8 differential and isolated channels
• Voltage or TC type per channel
• Expandable to 128 mixed channels
• True 16-bit measurement resolution
• 7 Digital Ports including rate and count
• ±10mV to ±50V measurement range
• 15V supply for 4-20mA sensors
• Includes WinDaq software

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DI-4718B-E
USB & Ethernet Data Acquisition
$795

• 8 analog inputs
• 160 kHz max sample rate
• 12V supply for 4-20mA sensors with DI-8B42
• Use isolated 8B amplifier modules
• Anti-aliasing Filter per Channel
• Records to PC or USB flash memory
• Expandable to 128 mixed channels

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DI-4108-M
Rugged USB/Ethernet DAQ
$648.00

• 8 differential analog inputs
• Stackable rugged enclosure
• Easy signal swapping connectors
• 15V supply for 4-20mA sensors
• Expandable to 128 mixed channels
• 200mV to 10 V measurement range
• and all other features from DI-4108-E

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DI-4208-M
Rugged USB/Ethernet DAQ
$648.00

• 8 differential analog inputs
• Stackable rugged enclosure
• Easy signal swapping connectors
• 15V supply for 4-20mA sensors
• Expandable to 128 mixed channels
• 2V to 100 V measurement range
• and all other features from DI-4208-E

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DI-245
Voltage and Thermocouple DAQ
$349

• 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 Software

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DI-2108-P
High Speed USB DAQ
Starting at $449.00

• 4 or 8 differential analog inputs
• Expandable to 128 mixed channels
• True 16-bit at 160 kHz throughput
• Measurement ranges 2.5, 5, 10 V
• 7 Digital Ports with rate and count
• High common mode voltage
• Records to PC or USB flash memory
• Includes WinDaq software

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DI-4730
USB & Ethernet Industrial Data Acquisition
$3695

• 8 isolated wide range channels measuring ±10mV to ±1000V
• Expandable to 128 mixed channels
• Anti-aliasing Filter per Channel
• 160 kHz analog throughput rate
• Records to PC or USB flash memory
• Includes WinDaq software

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GL260
Stand-alone USB data logger
$1095

• 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

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GL860
Stand-alone Data Logger
$2000

• 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

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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	$79
DI-2108	USB	12 to 16-bit	4 or 8	No	220,000 S/s Throughput	PC	PC or USB Flash	± 10V	$199.00
DI-4108-U	USB	12 to 16-bit	4 or 8	Up to 128	160,000 S/s Throughput per device	PC	PC or USB Flash	± 200mV to ± 10V	$449.00
DI-4208-U	USB	12 to 16-bit	4 or 8	Up to 128	160,000 S/s Throughput per device	PC	PC or USB Flash	± 2V to ± 100V	$449.00
DI-2108-P	USB	16-bit	4 or 8	Up to 128	160,000 S/s Throughput per device	PC	PC or USB Flash	± 2.5V to ± 10V; 0-5V, 0-10V	$449.00
DI-4108-E	USB and Ethernet	12 to 16-bit	4 or 8	Up to 128	160,000 S/s Throughput per device	PC	PC or USB Flash	± 200mV to ± 10V	$499.00
DI-4208-E	USB and Ethernet	12 to 16-bit	4 or 8	Up to 128	160,000 S/s Throughput per device	PC	PC or USB Flash	± 2V to ± 100V	$499.00
DI-2008	USB	16-bit	8	Up to 128	200 S/s Throughput 2000 S/s with single channel per device	PC	PC	± 10mV to ± 50V	$599.00
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	Up to 128	160,000 S/s Throughput per device	PC	PC or USB Flash	± 10mV to ± 60V DI-8B module dependent	$695
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	Up to 128	160,000 S/s Throughput per device	PC	PC or USB Flash	± 10mV to ± 60V DI-8B module dependent	$795
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
GL240	USB	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
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-4730	USB	12 to 16-bit	8	Up to 128	160,000 S/s Throughput per device	PC	PC or USB Flash	± 10mv to ± 1000V	$3695

Videos

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