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Model DI-4730

±1000V DAQ and Stand-alone Data Logger, 32GB Flash Drive, 8 Analog Inputs, 160kHz, Anti-aliasing Filter, 7 Digital Inputs, USB, Ethernet, PoE, Isolated Front-end (High-common-mode), WinDaq Software. Expandable to 128 channels

Why is isolated front-end so important?

  • Includes a DI-4730 instrument, a 6-foot USB cable, a 5-foot Ethernet cable, a power supply and adapter, a screwdriver for digital input signal connections, and a USB thumb drive with WinDaq software (also downloadable at and an NIST-traceable calibration certificate (.pdf)
  • Bundle Deal Bundle and Save
  • Measurement range of ±10mV* to ±1000VDC (or peak AC) over six ranges - ±1000V, ±100V, ±10V, ±1V, ±100mV, ±10mV* full scale
  • Need to measure other signals like thermocouples or pressure? Use ChannelStretch™ to sync with DI-4718 or DI-4108
  • Stand-alone capability to USB thumb drive (WinDaq/Pro Unlock Code required to record all channels to USB thumb drive - See Accessories)*
  • Up to 160,000 Hz Sample Throughput Rate using WinDaq Acquisition software
  • Up to 160,000 Hz Sample Throughput Rate in stand-alone mode using high speed microSD card
  • 12 to 16-bit analog-to-digital resolution (Calculate Resolution)
  • Power over Ethernet (PoE) included - run the device via USB, Ethernet, or PoE
  • Adaptable low-pass filter per channel
    • Corner frequency set as a function of sampling rate
  • Seven digital inputs
    • Support for rate measurements to 50 kHz
    • Support for 16-bit counter
  • Supports ChannelStretch™ multi-unit synchronization expansion:**
    • Up to sixteen instruments
    • Up to 480 kHz throughput
    • Up to 128 analog channels and 112 digital ports
    • Syncs with itself and DI-4108, DI-4208, and DI-4718B models (requires use of the same communications interface)
    • Synchronization not available in stand-alone mode
    • WinDaq/Pro Unlock code required per DI-4730 device - purchase under Accessories tab (other models use their own unlock code)
  • Software support includes ready-to-run WinDaq/Lite software and documented protocol for software development in all operating systems
  • Find out how long your data logger can record to removable flash memory with our Record Time Calculator
  • Markings: CE, UKCA

*10mV range is not calibrated, it is intended for visual reference

**WinDaq/Unlock required per device to use ChannelStretch™ and to record more than a single channel to removable USB thumb drive. See Accessories.

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DI-4730 Data Acquisition System
DI-4730 Data Acquisition System DI-4730 Data Acquisition System - Front View DI-4730 Data Acquisition System - Rear View
This data logger features 8 analog input channelsThis data acquisition system is expandable with ChannelStretch allowing you to connect multiple units and synchronize data recording.This data logger features 7 digital portsThis data logger measures 10mV to 1000VThis data acquisition system can sample and record data at up to 160,000 sample per second throughput
This data logger has a USB interfaceThis data logger has an Ethernet interfaceThis data logger has an optional PoE interfaceThis data logger can save data directly to a USB flash drive
10% Education DiscountThis data acquisition system has a 30-day Money back guaranteeThis data logger is manufactured in the United States of America


The DI-4730 is the next-generation of our very popular DI-730 series. The two are functionally identical except that the DI-4730 supports both ChannelStretch™ channel expansion and stand-alone data logging to a removable USB flash drive (unlock code required). Suitable for a wide range of analog and discrete measurements, the DI-4730, in tandem with the included WinDaq software, allows real time data acquisition, playback, and analysis performance that covers an incredibly broad array of applications in both laboratory and industrial settings. With all eleven scan list items enabled (8 analog channels, one each counter and rate, and all discrete input ports in the remaining position) a total sample throughput rate of 220 kHz is supported.

Eight analog input channels provide differential measurement flexibility and programmable ranges per channel of ±10mV (not calibrated), ±100mV, ±1V, ±10V, ±100, and ±1000 V full scale. The front end feeds a variable resolution analog-to-digital converter that ranges from 12 to 16 bits as a function of sampling rate. Lower sampling rates deliver higher resolution readings. Rounding off the analog subsystem are low-pass filters per channel with automatic corner frequency selection as a function of sampling rate. All these features combine to provide pure data acquisition power at an unmatched price point.

The DI-4730 provides 7 digital inputs with protection to 25 V. Two ports allow dual functionality as discrete inputs, or can be programmed as a counter or rate input respectively. The rate input features a 50 kHz maximum measurement, allocated over twelve programmable measurement ranges (10 Hz to 50 kHz full scale.) The counter input provides 16-bit resolution and a terminal count value of 65,535. The discrete, counter, and rate inputs are members of the same internal scan list used by the analog input channels. This means that all enabled elements are acquired synchronously, which allows meaningful comparisons between analog and digital channels. For example, the rate input measuring engine speed allows rpm data to be acquired in lock-step with analog data.

A USB drive is used to record data in stand-alone mode. The DI-4730 can record continuously using a circular buffer with pre-defined trigger conditions or a record-until-full approach supporting remote start/stop. A push button allows manual start/stop control over the recording process. With a flash memory card incorporating SLC technology, throughput rates up to 160 kHz can be achieved. That rate drops to 50 kHz when using pSLC card, and 20 kHz using a flash memory card incorporating MLC. The included WinDaq data acquisition software makes configuring the DI-4730 for stand-alone operation quick and intuitive. Alternatively, use WinDaq to set up channels and create a reference file. That reference file can then be copied to the USB drive and used for quick setup.

Model DI-4730 is provided with comprehensive software support. For point-and-click, ready-to-run applications the DI-4730 is supplied with our popular WinDaq software. WinDaq allows a real time display of any combination of analog channels, and the ability to stream acquired data to disk in recorder-like fashion, even at the fastest rate supported by the hardware. This is true streaming performance, continuous, without gaps, and simultaneously to both the real time display and disk. Record only a few readings, or as many as 4 GB. The DI-4730 reserves two digital inputs for WinDaq software that are dedicated for remote stop/start and remote event operations. WinDaq also includes software to review recorded data files, including waveform analysis and data file export to Microsoft Excel and other applications. Custom programming the DI-4730 is supported by a fully published and supported protocol document.


WinDaq/Pro Unlock Code

DI-4730 Unlock Code

WinDaq Unlock Code


Unlocks ChannelStretch™ in WinDaq and Stand-alone data logging to flash memory. Unlock code required per device. Unlock Code ONLY. No CD will be shipped. Please Note: If you are ordering this software for a device you already own, you MUST provide the serial number of your device under "Order Notes" during checkout. Please allow one (1) business day for processing.


WinDaq ExcelLink Unlock Code



Unlocks WinDaq ExcelLink to capture and streaming WinDaq data to any version of Microsoft Excel spreadsheet directly. No programming is needed. Compatible with ChannelStrech operation. Unlock Code required for each device.Please Note: If you are ordering this software for a device you already own, you MUST provide the serial number of your device under "Order Notes" during checkout to receive the unlock code. Please allow one (1) business day for processing.


4-20mA Output High Accuracy Pressure Sensors

Pressure Sensor


2000361-HX 4-20mA Output High precision pressure sensor measures PSI ranges of -14.5 to 10000 PSI dependant on model. 8-30V supply voltagle, such as a car battery. Made with 316 stainless steel and high temperature auto-graded plastic. 0.5% accuracy. 4-20mA linear current output.


Banana Plugs

Black shrouded banana plugs - both ends - silicone


BLACK shrouded banana plugs - both ends - silicone.


Banana Plugs

Red shrouded banana plugs - both ends - silicone


RED shrouded banana plugs - both ends - silicone.


Right-angle Plunger Hook

Black right angle insulated plunger hook clip


BLACK Right angle insulated plunger hook clip.


Right-angle Plunger Hook

Red right angle insulated plunger hook clip


RED Right angle insulated plunger hook clip.


Banana Coupler

Black 4mm insulated banana coupler


BLACK 4mm insulated banana coupler.


Banana Coupler

Red 4mm insulated banana coupler


RED 4mm insulated banana coupler.


Stacking Brackets

Stacking Brackets


Pair of stacking brackets (with mounting screws) for DI-720 and DI-730 Series instrument cases.



Bracket and Handle


Stainless steel handle for stacking brackets for DI-1000TC Series, DI-710 Series and DI-718B Series.


Mounting Brackets

Right-angle Mounting Brackets


Pair of right-angle mounting brackets (with mounting screws) for DI-47xx and DI-7x0 Series instruments.


Temp/RH Probe

Temperature and Humidity probe


Temperature and humidity probe measures -40 to +60 °C and 0 to 100% RH. Learn more.


4-20mA Current Loop Shunt Resistor

$ 2.99
R250 Shunt Resistor


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


AC/DC Current Clamp

AC/DC Current Probe


AC/DC Current Clamp includes 9V battery and user manual. Download the DataSheet (pdf) to learn more or go to the product page.


AC/DC Current Probe

AC/DC Current Probe


AC/DC Current Probe includes 9V battery, user manual, and 5 ft integral leads. Download the DataSheet (pdf) to learn more or goto the product page.


32GB USB Flash

32GB USB Flash Drive


32GB 3.0 USB flash drive for stand-alone recording up to 10,000 Samples per second throughput.


1GB Industrial SLC microSD Card (High-Speed)

1GB SLC High Speed Micro SD Card


1 GB Industrial Industry-grade high speed SLC microSD flash memory card. Recommended for recording rates higher than 80K S/s throughput rate and harsh environment. microSD Card Reader (Part#2000352) is needed


32GB Industrial-Grade microSD Card (High-Endurance)

32GB Mid Speeed MicroSD Card


32 GB Industry-grade high capacity microSD flash memory card. Recommended for recording rates between 10,000 S/s and 40,000 S/s throughput rate and harsh environment. microSD Card Reader (Part#2000352) is needed


microSD Card Reader

Micro SD Card Reader


Micro SD Card Reader with USB A interface. Hi-Speed USB 2.0 compatible transfer rates. No additional card adapters required


AC/DC Adapter

AC/DC Adapter for Sensor Excitation


AC Adapter for Sensor (such as 4-20mA) Excitation. Input: AC 100V-240V 50/60Hz; Output: 12V, 2A. Power Cable Length: 36.6 inch (0.9m).


CAT-5 Cable

CAT-5 Cable, one foot long


One-foot length CAT-5 Ethernet cable.


CAT-5 Cable

CAT-5 Cable, Seven Feet Long.


Seven-foot length CAT-5 Ethernet cable.


USB Ferrite Choke

Ferrite Choke


Ferrite choke reduces interference for USB-based data acquisition products.


USB Cable

Dual Ferrite USB cable for ChannelStretch


Optional USB Cable for use with ChannelStretch™. Dual ferrite cores provide maximum protection against ground bounce that could lockup your PC's USB port during data acquisition. 20.4-inch (520 mm) overall cable length. Recommended whenever products are deployed in our ChannelStretch™ configuration.


7 Port USB Hub



Powered 7 port USB hub to synchronize multiple USB devices. Please note: Not all DATAQ Instruments devices support synchronization - check your product datasheet or product page for detailed information. Note: Provided with a US ac adaptor only, and is not suitable for use in countries that require an ac mains connector other than the US type.


8-port PoE Switch

8-port PoE Switch


8-Port Gigabit PoE Switch. 8 dedicated 10/100/1000 Mbps copper ports with PoE to connect with your Dataq Power over Ethernet (PoE) devices. Delivers up to 15.4W power per port and up to 53W of total PoE budget.


Power Supply

Spare power supply for DI-808 Web-based Data Logger


Spare power supply for DI-808 and DI-4730 products.


Power Cable

Power Cable


Power cable (US) for power supply.


USB Extension Cable

16-foot USB 2.0 extension cable.


16-ft USB Extension Cable. USB 2.0 Type A. Daisy chain up to 5 cables for extended length.


Calibration Certificate

NIST Calibration Certificate


Re-calibration Service, this calibration certificate is included with new instruments. NIST-traceable calibration certificate for all DI-4730 data acquisition and data logger products (before and after data included). Shipping charges do apply when ordering online. Learn more about Calibrating your device.



Data Acquisition Recording and Playback Software

Included FREE with your DI-4730 purchase. Installs drivers and WinDaq recording and playback software. Includes optional Add-on software with a valid installation key. Record all 8 channels to USB thumb drive and enable ChannelStretch with the WinDaq/Pro Unlock Code (see Accessories) - one required PER device.

WinDaq Data Acquisition Software

WinDaq XY Viewers

Live XY charting for WinDaq and WWB


Originally designed for GE Mining Division, these two XY plotting utilities are great tools for trouble shooting their mining equipments.

WinDaq Data Acquisition XY Viewerse

WinDaq ExcelLink

WinDaq-to-Excel Real Time Link

High speed (up to 160K s/s) with powerful trigger methods to capture or stream data to Excel in real time, compatible with ChannelStretch, supports both 32- and 64-bit Excel. No programming is needed.

WinDaq Excel Link

WinDaq Add-ons and Utilities


Library of add-on packages for WinDaq Software, such as live XY plot, FFT, Spectrogram, Meter, Gauge, Alarm, etc.

WinDaq Data Acquisition Add-on Software

Python Example Programs

Available on GitHub

FREE Python example programs using the fully documented device protocol. All sample programs are well-commented to help you get up and running quickly.

DATAQ Python Example Programs

LabView Example Programs

Available on GitHub

FREE LabView example programs using the Dataq's ActiveX Controls. All sample programs are well-commented to help you get up and running quickly.

DATAQ LabView Example Programs


Analog Inputs
Number of Channels: 8
Configuration: Differential
Full Scale Range: Programmable ±10mV, ±100mV, ±1V, ±10V, ±100V, ±1000V
Isolation: ±1000V input-to-output and channel-to-channel
Max normal mode voltage (VNM): 800VDC or peak AC
Max common mode voltage (VCM): 1000VDC or peak AC
Max Input without Damage: ±1000VDC or Peak AC (±1000V and ±100V Ranges all other ranges with fuse protection)
Common Mode Rejection: 100dB min @ DC to 60Hz
Accuracy: Vin ≤ 800V ±(0.25% of full scale range ±100µV)
Vin > 800V ±(0.5% of full scale range)
Input impedance: 10MΩ for all ranges
Analog frequency response (each ch): ±1000, 100, 10, 1V: -3 db @ 5.0 kHz
±100mV: -3 db @ 4.50 kHz
±10mV: -3 db @ 1.30 kHz
Channel-to-channel crosstalk rejection: -75 dB @100kHz into 100 Ω unbalanced
Analog input connector type: Safety banana socket - 1 pair per ch
ADC Characteristics
Resolution: 12- to 16-bit
Above zero ADC counts: 2,047 to 32,767
Below zero ADC counts: 2,048 to 32,768
Max. throughput sample rate: Standard: 160 kHz
Stand-alone: 20 kHz to 160 kHz (dependent on flash memory)
Min. throughput sample rate: Standard: 20 Hz (2.2 samples per hour with WinDaq)
Stand-alone: 0.0017 Hz
Sample rate timing accuracy: 100ppm
Digital Inputs
Number of ports: 7
Configuration: Inputs
Threshold levels: TTL-compatible
Absolute maximum applied voltage (V): 25 V dc
Reserved Digital Inputs  
D0: WinDaq Remove Events
D1: WinDaq Remote start/stop
D2: Rate Input
D3: Count Input
Count/Rate Inputs  
Internal pull-up value: 4.7 kΩ
Input high voltage threshold: 2.4 V
Input low voltage threshold: 0.8 V
Terminal count: 65,535
Maximum rate frequency: 50 KHz with one enabled channel
20 KHz with 2-4 enabled channels
10 KHz with 5-7 enabled channels
Minimum rate frequency: 0.5 Hz
Maximum count frequency: 50 kHz
Ethernet Interface
Type: 10/100Base-T
Connector: RJ-45
Protocol: TCP/IP
Server Type: DHCP or Fixed IP
Removable Memory
Type: MLC, pSLC, or SLC flash memory (with USB SD card reader); USB thumb drive
File Format CSV (Excel compatible) or WinDaq (Higher capacity and max speed)
Required Format: FAT32
Indicators and Connections
Front Panel  
Analog Input Connections: 16 insulated banana jacks (2 per channel)
Rear Panel  
Button: Multi-function control (Start, Stop, Save Configuration, Apply Configuration)
USB Drive (Type-A): USB drive for stand-alone data logging
Status LED: Single multi-color LED
USB Connector: USB 2.0 (mini-B style connector) PC communications
Ethernet Port: RJ-45 10/100Base-T; PoE supported
Digital I/O connections: One 16-position screw terminal block
Ground Lug: Connect to Earth Ground
Power Adapter and Switch: 9-36 VDC
ChannelStretch™ Operation
Maximum number of units: 16
Maximum channel count: 128 analog, 112 digital
Channel skew between any 2 units: 10 µS, typical
Maximum supported throughput: ≥480 kHz
Synchronization conditions: Syncs with any combination of DI-4108, DI-4208, DI-4718B, and DI-4730 USB instruments.
All synced instruments must operate at the same sample rate per channel, regardless of channel number, type, or range.
All instruments must be connected to the same USB controller. The use of USB hubs are recommended to meet this requirement.
Maximum number of units: 16
Maximum channel count: 128 analog, 112 digital
Channel skew between any 2 units: 100 µS, typical
Maximum supported throughput: >50 kHz
Synchronization conditions: Syncs with any combination of DI-4108, DI-4208, DI-4718B, and DI-4730 Ethernet instruments.>br />For most accurate synchronization, all instruments should be connected to the same Ethernet switch.
Power Consumption: 14 Watts
Operating Temperature: 0 to 50 °C
Operating Humidity: 0 to 90% RH non-condensing
Storage Temperature: -20 to 60 °C
Storage Humidity: 0 to 90% non-condensing
Physical Characteristics
Enclosure: Aluminum base with steel wrap-around
Mounting: Desktop; bulkhead
Dimensions: 7.29"W × 9"L × 1.52"H
(18.5D × 22.86W × 3.86H cm.)
Weight: approx 3 lbs
Software Support
WinDaq software: OS support
Programming: Published Instrument protocol


Introducing WinDaq's RPM channel
WinDaq RPM channel

See how WinDaq's RPM channel work.
Introducing the DI-710 Voltage Data Acquisition and Data Logger System
Adaptable Anti-aliasing Filters

See how DATAQ's anti-aliasing filters work.
Synchronous Data Acquisition Using the DI-2108-P USB DAQ
Synchronous Data Acquisition

Sync up to 16 DI-4000 Series units together and record to a single file.
How to make 4-20mA current measurements using the R250 and a Data Instruments Data Logger
4-20mA Measurements

Learn how to connect a 4-20mA signal using the R250 shunt with Dataq products.
How to make flow measurements using a flow sensor and a Dataq Instruments Data Logger
Flow Measurements

Learn how to make Flow Measurements with a flow sensor and Dataq products.
Stand-alone data logger configuration using the WinDaq Dashboard Utility
Stand-alone Setup

Learn how to configure your data logger to record to USB thumb drive.
Live View of Stand-alone data logger recording session
Live Viewer

Take a sneak peek (via ethernet) at data being recorded to the USB flash drive.
Exporting Data to Excel
Export data to Excel

Learn how to export data from WinDaq Waveform Browser to Microsoft Excel.
Introduction to WinDaq Data Acquisition Software
WinDaq Data Acquisition Software

Introduction to WinDaq Data Acquisition Software.

Similar Products

Quick Product Comparison

Expansion with
other models (DI-)
Max Sample
Rate (Hz)
4108 4 or 8 A 4108, 4208, 4718B, 4730 160,000 Yes 12-16 7 Bi Yes Yes Yes USB and Ethernet
PoE optional
4208 4 or 8 B 4208, 4108, 4718B, 4730 160,000 Yes 12-16 7 Bi Yes Yes Yes USB and Ethernet
PoE optional
4718B 4 or 8 C 4208, 4108, 4718B, 4730 160,000 Yes 12-16 7 Bi Yes Yes Yes USB and Ethernet
PoE optional
4730 8 D 4208, 4108, 4718B, 4730 160,000 Yes 12-16 7 In Yes Yes Yes USB, Ethernet, and PoE

*Expand with ChannelStretch™. Compatibility with other units dependent on model.

Use the following chart to determine Measurement Ranges:

±200 mV
±500 mV
±1 V
±2 V
±5 V
±10 V
±2 V
±5 V
±10 V
±20 V
±50 V
±100 V
8-B module dependant ±1000 V
±100 V
±10 V
±1 V
±100 mV
±10 mV