IL-Mini Specifications


Following are IntelliLogger IL-Mini™ Specifications.  The IntelliLogger IL-Mini™ was designed as a rugged data logger for industrial and harsh environment data acquisition and alarming applications.  The unit is equally suited for portable data logger applications such as in energy audits, compressed air audits, field test and troubleshooting as well as in permanent long term data logging and alarming applications.

IntelliLogger IL-Mini™ with front panel open
for wiring and battery access


Voltage Input (Standard)
   7 to 28 Vdc with transient protection
Voltage Input (Wide Range Option)
   9Vdc start, 5Vdc run with 60Vdc continuous withstand.  Load dump and    transient clamped.
Power (Full Power Mode with LCD)
   ~15ma sleep between readings with ~30mA peaks during readings    (~10mS duration, depends on channel configuration) at 12Vdc input.
Power (Full Power Mode with LCD blanking or uninstalled)
   ~3mA sleep between readings with ~30mA peaks during readings    (~10mS duration, depends on channel configuration) at 12Vdc input.
Power Options
   External power (optional wall adapter or user provided power source)
   Internal alkaline D-cells (6) (Optional) for 3-5 month autonomous    operation (LCD blanking mode).


Operating Temperature:
-40 to 70C (LCD will not function below approximately -20C)

Enclosure Environmental Rating
NEMA 4x equivalent (non-certified)


Basic unit: apx 2 lbs (depends on options)
With D-Cell Option:  apx 4 lbs

Basic Unit:  6”W x 9.2”H x 3.3”D
With D-Cell Option: 6”W x 9.2”H x 4.7”D

User Interface

Serial Comm (to PC)
USB 1.1

Display (optional)
4 line x 20 character display. 
Viewable area: 0.95” x 2.9”
Menu tree for for status and current/calculated values, manual or automatic display sequencing with user defined timing, alarm states, custom user defined messages, last memory values, and more.
LCD operational Modes:
Continuous ON
Auto blanking with wake on button press

Front Panel User Buttons
Next and Select (with LCD option)
Enable, Stop and Reset for Program Net operation control, clearing memory, etc.

Panel Indicators
Two green LED indicators under user defined Program Net control.
One or two (depends on options specified) red LED indicators for alarm status (user control)

Power Switch
On/Off control (switches power source)

Analog Inputs;  General

Analog Sampling Rate Overview
Each input channel can be individually configured for Sampling Rate per Program Net configuration.  Maximum sampling rate for input channels depends on  configuration of the input channel (eg filtering, settling time, etc) and the complexity of the Program Net  implemented.  However the following are some baselines for general reference:

Vdc-Lo, mAdc and thermocouple inputs  Sampling Rate
Direct to memory with default settings:
100 S/Sec

Vdc-Hi Channel Sampling Rate
Direct to memory with default settings:
1 channel active per scan; 20 S/Sec
4 channels active per scan;  55 S/Sec

Analog to Digital Conversion Resolution
Effective 12 bit  (1 part in 4096)
Bipolar inputs with DSP

Channel Quantity
4 individually configurable channels

Analog Advanced Settings
Noise rejection: 50Hz, 60Hz, none
Settling Time extension

Vdc-Lo Analog Inputs (included in all models)

Eight user programmable ranges of low level voltage input are provided standard.  Each channel can have a unique input range under user control.

Vdc-Lo Input Ranges
-10 to +20mVdc
-35 to +60mVdc
-45 to +80mVdc
-60 to +100mVdc
-120 to +200mVdc
-300 to +500mVdc
-600mVdc  to +1.0Vdc
-1.2Vdc  to +2.0Vdc

Vdc Reading Accuracy
+/-0.2% of Full Scale (typical +/- 0.1% FS)

mAdc Analog Inputs (Option)

Eight user programmable ranges of DC current are provided with the mAdc option.  Each channel can have a unique input range under user control.

mAdc Input Ranges
-100 to +200uAdc
-350 to +600uAdc
-450 to +800uAdc
-600 to +1000uAdc
-1.2 to +2mAdc
-3 to +5mAdc
-6mAdc  to +10mAdc
-12mAdc  to +20mAdc

Vdc-Hi Analog Inputs (Option)

Three user programmable ranges of Higher level voltage input are provided standard.  Each channel can have a unique input range under user control.1

Vdc-Hi Input Ranges
-15 to +30Vdc
-7.5 to +15Vdc
-5.0 to +7.5Vdc
-2.0 to +3.0Vdc

Thermocouple Inputs (Option)

Supported Thermocouple Types
J, K, E, T, R, S and N types supported with direct terminal strip connection.

Thermocouple Input Ranges
Full and Limited ranges are provided for most input types allowing for higher resolution readings when wide temperature input range is not required.
User selectable DegC of DegF

Full Range / Limited Range (Deg C):

J  -200 to +1000 / -200 to +425
K  -270 to +1370 / -270 to +553
E  -270 to +1000 / -270 to +860
T-270 to +400 / NA
R  -50 to +1768 / NA
S -50 to +1768 / NA
N  -270 to +1300  / -270 to +648

Thermocouple Accuracy
Aggregate Accuracy (includes CJC error):  +/- 1C (+/-0.5C typical over -20 to 60C instrument temperature)

Cold Junction Compensation
Automatic for Thermocouple measurement
CJC Range:  -40 to 70C
Accuracy:  +/-0.5C,  (0.2C typical over -20 to +70C)

CJC Icon (Standard)
An icon is provided for use in the Program Net  which reports terminals trip temperature for use in thermocouple reading cold junction compensation.  The CJC function is performed automatically if thermocouple inputs are connected. 

Additionally, the CJC temperature is provided as a user accessible input channel (icon) for utilization in the Program Net and monitoring of unit temperature.

Digital Input (included in all models)

The Digital Input can be configured under user control for Event, High speed counter or Frequency input.

Switching threshold is approximately 2.0Vdc with approximately 300mV of hysteresis.
User selectable debounce filtering
User selectable Pull-Up voltage (via 10k ohm resistor to internal 3.3Vdc supply) allows for use with non-powered switch contact closures.

Hi-Speed Counter
Accepts square, triangle and sine wave inputs.  Baseline operational specs follow:
Square wave:   +/-5Vpp  30kHz; +/-3Vpp 12kHz
Triangle wave:  +/-3Vpp 3kHz; +/-5Vpp 12kHz
Sine wave:  +/-3Vpp 6.6kHz;  +/-5Vpp 18kHz

Typical Input range:  1 to 30Khz
The frequency input channel utilizes specialty amplifiers for maximizing sensitivity to low frequency low amplitude input waveforms.

Sensitivity at low frequency baselines:

120mVpp sine;  Minimum freq; 1.3Hz
1Vpp sine minimum freq: 0.15Hz

Vsupply Analog Input (Standard)

Vsupply Icon
An icon representing the Vinput to the IntelliLogger is available for use in Program Nets.  Can be use for monitoring internal battery state of charge, PV charged external batteries, grid power fails, etc with corresponding alarming

Order options include relay and digital outputs of up to two digital outputs or two relay outputs or one of each.

Digital Output
0/5Vdc outputs through 200ohm protection resistance.  Short circuit protected (continuous)

Relay Output
Form C (normally open, normally closed and Common terminals are provided to user).  Contacts are isolated from all internal IntelliLogger IL-Mini™ circuitry.
Current Rating:  1A AC/DC2

Modbus RTU

Modbus Communications
RS-485 (2-wire)
1200, 9600, 19.2K and 38.4K baud
N,1stop;  N,2stop:  Even, 1stop; Odd, 1stop
User definable inter-message delay for comm with slow response Slave devices.

Modbus RTU Master
16 Slave devices supported in Modbus RTU Master Mode
Single and Double register (16 or 32 bit mode)
Register swap order
Integer, Float and Bit Field support

Modbus RTU Slave
User defined icons within Program Net allow for sharing of analog values, calculated values, states, etc.

Logged Data Memory

Data Storage Memory (internal)
~50,000 readings internal (standard)
~160,000 readings internal (EXM option)
Lithium cell backup (2 year minimum)

Data Storage Memory (CF Card option)

Removable Compact Flash card support via socket
~10 million readings to CF Card3

Logging Modes
Log to Full and Stop
Log to Full and continue processing Program Net
Rotary (FIFO) mode with user defined % of memory to utilize


Full programmability via HyperWare-II.  Programming is done by  addition of processing icons from on-screen palette and interconnection with mouse.  Icons provide a variety of functions and interconnection easily provides simple to complex data manipulation, processing, logging and alarming functions… all visually intuitive.

Example Logging and Alarming Schemes
The following are but a few of the unlimited logging and alarming schemes readily implemented with the IntelliLogger IL-Mini™ and HyperWare-II:

  • Sample input frequently but only log when value changes by a user defined amount
  • Alarm/Log only when above/below  a threshold
  • Alarm/Log dependent on another channel(s)  value or state
  • Change sampling rate upon some other channel(s) or calculated value conditions
  • Totalize only when above some level
  • Calculate duty-cycle  on time
  • Calculate  and log values  based on multiple inputs
  • Perform actions based on real date, time calendar
  • Output periodic waveforms
  • And much more
HyperWare-II Icon Palette Listing
  • Sample Rate Clock
  • Memory
  • Math  (full algebraic operation library)
  • Delta (pass on change)
  • Summation
  • Min/Max
  • Averaging
  • Probe Point
  • Set point comparator
  • Window Comparator
  • Constant
  • Remote Control Constant
  • Periodic Output Waveform Generator
  • Remote control Switch
  • Stop Watch
  • Start/Stop Clock
  • Warning
  • Logical And
  • Logical OR
  • Logical XOR
  • Logical Inverter
  • R-S Latch (flip-flop)
  • Analog multiplexer
  • Integration
  • Derivative
  • Duty Cycle Calculation
  • Programmable Filter
  • Timed Counter
  • Accumulating Counter
  • Stop Logging
  • Delay
  • Warm-Up (sensor excitation)
  • Scratchpad memory
  • Latch
  • Note (annotation)
  • Calendar Scheduler
  • Data Buffer
  • Transient Filter

1 Note: To preclude personal harm as well as potential instrument damage, at no time should voltages exceeding 32Vdc ever be applied to any terminals on the IntelliLogger IL-Mini™.

2 Note: For switching of inductive loads (relay coils, solenoids, etc), it is highly recommended that clamping diodes or other suppression devices be installed across the relay output terminals to protect from inductive kick voltages upon load circuit current interruptions.

3 Note: It is highly recommended that the Logic Beach CF-IND-128MB, industrial temperature rated, 0 wait-state, 100% tested Compact Flash card be used with the IntelliLogger product family.


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Logic Beach, Incorporated
8363-6F Center Drive
La Mesa, CA 91942
Phone: (619) 698-3300 | Fax: (619) 469-8604

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