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Model DI-161

Event, State, and Count Data Logger Records When, How Long, and How Many Times Events Occur

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  • Includes a DI-161 instrument, a 7-foot Ethernet cable, eight input fuses (pre-installed), a DIN-mountable tray, 3 mounting feet, and downloadable controller software. Note: At least one input module required. Input conditioning modules are purchased separately.
  • Measures how long, how many, and when events occur
  • Perfect as an OEE (Overall Equipment Effectiveness) data logger
  • Adapts to a wide range of signal types
  • LAN-based for easy deployment, singularly or in groups
  • Includes server-side software to aggregate and report results
  • CE approved
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DI-161 Event Data Logger
This data acquisition unit features 8 inputy channelsThis data logger defines measurement range via input modules.This data logger features sample rates from 0.1 samples per second per channel to 1 sample per day per channel.This data acquisition system can record to a database
This data logger has an Ethernet interfaceGet same day shipping when you order this data logger before 3PM ETThis data acquisition system has a 30-day Money back guaranteeThis data logger is manufactured in the United States of America


The DI-161 LAN-based Event Data Logger features 8 input channels to detect events (when the events happen), states (how long between events) and counts (how many events).

In general applications the DI-161 acts as a state change and on/off data logger. Examples include the reporting of activity involving motors, pumps, fans, refrigeration units, flow sensors, and more. In a more narrow sense the DI-161 can develop a complete picture that describes all the variables needed to quantify overall equipment effectiveness (OEE). For example: Actual operating time; Actual production rate; Total units produced; Defective units produced.

In many applications a range of existing control signals may be paralleled with the DI-161 to derive desired OEE metrics. For example, if power is applied to a machine whenever it is available for production, that same signal can be applied to a DI-161 channel and configured for the "State" mode to allow the DI-161 to report Actual Operating Time. Likewise, a sensor that produces a pulse when a completed part is ejected by a machine can be applied to a channel configured for the "Count" mode to derive Total Units Produced and Actual Production Rate. The flexibility of the DI-161 allows a wide range and combination of measured metrics.



Power Supply

Power supply.


Isolated DC power supply for model DI-161.


AC/DC Input Module

Module for DI-161 Event Data Logger


120-V isolated AC/DC discrete input module.


DC Discrete Module

Module for DI-161 Event Data Logger


24-V isolated, high speed DC discrete module.


AC/DC Input Module

Module for DI-161 Event Data Logger


240-V isolated AC/DC discrete input module.


AC/DC Input Module

Module for DI-161 Event Data Logger


24-V isolated AC/DC discrete input module.



Fuse for DI-161 Event Data Logger


One (1) spare signal input fuse (8 are included with device).


Mounting Foot

DIN Rail mounting foot for DI-161 Event Data Logger


One (1) spare mounting foot (3 are included with the device).


DIN Rail

Ferrite Choke


35mm × 609mm (24 inches) top hat-style DIN rail.


Event Recorder Software

DI-161 Configuration

Included FREE Setup and configuration software for the DI-161 Event, State, and Count Data Logger.

DI-161 Event Logger Software


Signal Inputs
Number of Channels: 8
Input channel range: Refer to module specs
Channel-to-channel isolation: 600 VDC or peak AC
Input-to-output isolation: 600 VDC or peak AC
AC/DC module detailed specifications
Input IN5S IA5S IM5S Units
Nominal Input Voltage1 24 120 240 Vrms/Vdc
Minimum Input Voltage1 10 80 90 Vrms/Vdc
Maximum Input Voltage1 60 140 280 Vrms/Vdc
Maximum Input Current 30 10 8 Vrms/Vdc
Drop Out Current 1.0 2.5 1.5 Vrms/Vdc
Allowable Off-state Current 1.0 3.0 2.0 Vrms/Vdc
Allowable Off-state Voltage 2 50 120 Vrms/Vdc
Maximum Turn-on Time (Vac) 20 msec
Maximum Turn-off Time (Vac) 30 msec
Maximum Turn-on Time (Vdc) 1 msec
Maximum Turn-off Time (Vdc) 1 msec
Line Frequency Range 50-60 Hz
Maximum DC Pulse Count Frequency 50 Hz
Maximum AC Line Pulse Count Frequency 25 Hz

1 Unipolar only for DC input signals. AC input signals support line frequencies (50-60 Hz).

Input IB5S Units
Nominal Input Voltage2 24 Vdc
Minimum Input Voltage2 3.3 Vdc
Maximum Input Voltage2 32 Vdc
Maximum Input Current 32 mA dc
Nominal Input Resistance 1K Ohm
Drop Out Current 1.0 mA dc
Allowable Off-state Current 1.0 mA dc
Allowable Off-state Voltage 2.0 mA dc
Maximum Turn-on Time 5 msec
Maximum Turn-off Time 5 msec
Maximum DC Pulse Count Frequency 100 Hz

2 Unipolar signals only.

Internal Clock
Accuracy: 20 ppm
Sync method: Via connected PC during setup
System Configuration
Method: Using PC-based program and web server via Ethernet interface
Parameters: Measurement configuration; sampling interval; network settings; channel labels
Programmable network settings: DHCP/fixed/DNS IP address; subnet mask
Measurement Operation
Programmable functions(per channel): Event, State, Count; positive- or negative-edge triggering
Programmable Intervals: 0.1 to 86,400.0 seconds (.1 sec to 1 day).
Counter Operation
Operation: Counts the number of events occurring over a sample interval.
Reset condition: Programmable interval timeout
Maximum count: 8,640,000
Maximum frequency: See module specifications
Minimum pulse width: See module specifications
State Operation
Operation: Determines the DURATION of an event. Records the state that exists upon termination of a sample interval.
Operation: Determines WHEN an event occurred, but does not yield the duration of the event. Records a single time-stamped data point when one or more events occur within a definable interval.
Minimum pulse width: 5 mSec
Controls, Indicators and Connections
Interfaces: Ethernet (operation); USB (firmware upgrades)
Channel Indicators (LED): Channel state (true/false), one per channel
Active Indicator (LED): Indicates activity: Flashes 3 times per second when program running; once per second otherwise.
Power Indicator (LED): Indicates power.
Signal input connections: Screw terminals, four per channel:± signal input and (2) no-connect.
Power connector: 2-position screw terminal
Signal module backplane: Eight positions (one per channel)
Fuse socket: Eight positions (one per channel)
Voltage range: 9 to 36 Vdc
Power consumption: 2.25 watts (excluding modules)
Power consumption per module: 0.10 watts
Optional Power Supply (DIN-P24)
Rated input voltage: 100-240 Vac
Input frequency: 47-63 Hz
Inrush current (115/230 Vac): 15/30 A
Efficiency: >80%
Voltage out: 24 Vdc
Nominal current out: 420 mA
Input-to-output isolation: 500 Vdc
Minimum required free space: 25 mm on all sides
Operating temperature: -25 to +71 °C
Approval: CE, UL508
Weight: 60g
Operating Temperature: 0°C to 35°C (32°F to 95°F)
Operating Humidity: 0 to 90% non-condensing
Storage Temperature: -20°C to 45°C (-4°F to 113°F)
Storage Humidity: 0 to 90% non-condensing
Physical Characteristics
Mounting and type: DIN rail, EN 50022, top hat rail
Dimensions (with modules): 10.35 × 2.41 × 4.94 inches
Weight (with modules): 1.35 lbs


Introduction to the DI-161 Event Data Logger
Overview of the DI-161

Introducing the DATAQ Instruments DI-161 Event, State, and Count Data Logger

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