iBG iLog Strain Gauge/Bridge Data Logger
The iBG iLOG is a compact, battery-powered strain gauge and bridge data logger designed for measuring low-level bridge signals in industrial, laboratory, research, testing, and sensor-monitoring applications.
It supports full-bridge strain gauge, load cell, pressure sensor, and other bridge-type transducer measurements. The logger provides excitation voltage, excitation-sense compensation, and a dedicated bridge input channel to help improve measurement accuracy in demanding applications.
Three models are available to support different input ranges:
- iBG-8: ±8 mV
- iBG-16: ±16 mV
- iBG-32: ±32 mV
Measurement data is stored in 8 MB of non-volatile flash memory for later retrieval. The aluminum enclosure and compact iLOG design make the unit suitable for both laboratory and field applications.
Strain Gauge and Bridge Measurement
The iBG supports 6-wire full-bridge configurations and provides:
- 2.5 VDC excitation output
- Excitation-sense input
- Bridge signal input
- Excitation-wire compensation
This makes the iBG suitable for applications using:
- Strain gauges
- Load cells
- Pressure sensors
- Force sensors
- Torque sensors
- Other compatible bridge-type transducers
The excitation-sense channel helps compensate for voltage drop in the excitation wiring, improving measurement accuracy when the sensor is located away from the logger.
High-Resolution Data Logging
The iBG uses a 16-bit analog-to-digital converter for high-resolution bridge measurements.
Sampling intervals are programmable from:
30 milliseconds to 12 hours
This allows the logger to support both relatively fast measurement applications and long-term standalone monitoring.
Standalone Operation and Long-Term Recording
Recorded data is stored in 8 MB of onboard non-volatile flash memory.
The logger supports:
- Stop logging when memory is full
- FIFO logging mode
- Immediate logging
- Delayed start
- Field push-button activation
At a 1-minute sampling interval in standalone mode, the internal lithium battery provides up to 12 years of operation, depending on usage and operating conditions.
USB Communication and SiteView Software
The iBG connects directly to a Windows computer through USB.
SiteView software provides the tools required to:
- Configure logging sessions
- Download recorded data
- View real-time readings
- Display data in graph and table formats
- Configure alarms
- Apply custom calibration
- Apply custom equations
- Convert bridge measurements into engineering units
- Export and analyze recorded data
SiteView is sold separately.
Alarm and Excitation Control
The iBG provides configurable alarm and control functions for applications requiring more than basic data recording.
Each channel supports two programmable alarm thresholds.
The available output terminals can be configured for:
- Alarm output
- Excitation control
The onboard status LED provides visual indication of normal sampling, alarm conditions, and low battery status.
Remote Access and Network Integration
Although the iBG is a USB-based data logger, it can be accessed remotely over an Ethernet network by connecting it to a Microedge Smart-Hub.
Smart-Hub allows the iBG to be accessed through:
- SiteView
- SiteView-Web
- SiteView SDK
- Pluto
Smart-Hub also provides:
- RESTful Web API
- Modbus TCP Gateway
This allows iBG measurements to be integrated with third-party software and industrial monitoring systems.
Rugged Industrial Design
The iBG is housed in a durable aluminum enclosure and is designed for operation from:
−40°C to +70°C (−40°F to +158°F)
with up to:
95% RH, non-condensing.
Key Features
- Full-bridge strain gauge / bridge measurement
- 6-wire bridge support
- Excitation voltage output
- Excitation-sense compensation
- Models for ±8 mV, ±16 mV, and ±32 mV input ranges
- 16-bit analog-to-digital converter
- 8 MB non-volatile flash memory
- 30 ms to 12 hr programmable sampling interval
- USB communication
- AUX TTL-level serial communication
- Programmable alarm thresholds
- Stop or FIFO logging mode
- Immediate, delayed, or push-button logging activation
- Up to 12 years of battery life at a 1-minute sampling interval
- Rugged aluminum enclosure
- SiteView software support
- Remote Ethernet access through Smart-Hub
- RESTful Web API and Modbus TCP integration through Smart-Hub
Typical Applications
The iBG is suitable for:
- Strain gauge measurement
- Load cell data logging
- Pressure sensor monitoring
- Force measurement
- Torque measurement
- Bridge sensor testing
- Structural testing
- Laboratory research
- Product validation
- Long-term bridge-signal monitoring
Documents
- iLOG Strain Gauge Data Logger Specifications
- iLOG Strain Gauge Data Logger Wiring and Equations
- SiteView Specifications
| General | |
|---|---|
| Product Name | iLOG Strain Gauge/Bridge data logger |
| Model | iBG-8, iBG-16, iBG-32 |
| Inputs | |
| Input Connections | Pluggaable terminal block for: Excitation voltage output Excitation sense input Strain/Bridge input Alarm and excitation control outputs |
| Bridge Configuration | Support 6-wire full-bridge measurement |
| Excitation Output | 2.5 VDC, maximum load current 5 mA |
| Excitation Sense Input | 2.5 VDC |
| Bridge Input | 1 bridge signal input channel |
| iBG-8 Input Range | ±8 mV |
| iBG-16 Input Range | ±16 mV |
| iBG-32 Input Range | ±32 mV |
| Resolution | 0.0018% |
| iBG-8 Accuracy | ±0.2% FSR @ 25°C |
| iBG-16 Accuracy | ±0.1% FSR @ 25°C |
| iBG-16 Accuracy | ±0.05% FSR @ 25°C |
| Input Impedance | < 1 Ω |
| Over-Current Protection | Up to ± 100 mA |
| Overvoltage Protection\ | Up to -3VDC ~ +40VDC |
| Alarm Functions | |
| Channel Alarm Thresholds | Two programmable alarm thresholds per channel |
| Alarm Outputs | ALARM1 and A2/E terminals can be configured as alarm outputs |
| Alarm Output Type | N-channel MOSFET switch |
| Alarm ON | MOSFET switch ON |
| Alarm OFF | MOSFET switch OFF |
| Maximum Alarm Output | 200mA @ 24 VDC |
| Alarm Delay | Programmable from 0 to 10 minutes in 1-minute increments |
| Alarm Indicator | Status LED flashes red during sampling when an alarm condition is active |
| On-board Memory | |
| Flash Memory | 8 MB (4MB readings) non-volatile flash memory |
| Data Retention | More than 20 years. |
| Memory-Full Options | Stop logging or FIFO mode |
| Sampling and Logging | |
| Sampling Interval | Programmable from 20 milliseconds to 12 hours Maximum number of enabled channels: 20 ms sampling interval: 1 channel 30 ms sampling interval: 2 channels An external power supply is required when the sampling interval is less than 1 second. |
| Fast Sampling Power Requirement | External power is required when the sampling interval is less than 1 second |
| Logging Modes | Stop when memory is full or continue in FIFO mode |
| Logging Activation | Immediate start, delayed start, or field push-button activation |
| Communications | |
| USB Interface | Mini-USB-B |
| USB Cable | USB-A to Mini-USB-B cable included |
| AUX Interface | RJ11 TTL level serial communication |
| Baud Rate | Automatically detected from 2400 to 115200 bps on USB and AUX interfaces |
| Remote Network Access | Available through Microedge Smart-Hub |
| Battery and Power | |
| Internal Battery | Built-in 3.6V Lithium Battery. |
| Battery Life | Up to 12 years at a 1-minute sampling interval, depending on usage and operating conditions |
| External Power | 5 VDC through USB |
| Software | |
| Software | SiteView (Sold separately) |
| Functions | Logger configuration, data download, graphing, real-time monitoring, custom calibration, custom equations, alarm configuration, and data analysis |
| Operating Systems | Windows 8, 10 and 11 |
| Computer Requirement | 1.0 GHz or faster processor; 1 GB RAM or higher; 10 GB available storage or higher |
| Required Interface | At least one available USB port |
| Physical Specifications | |
| Enclosure Material | Aluminum |
| PCB Protection | Conformal coating. |
| Dimension | 88 X 64.2 X 24 mm (3.46 X 2.53 X 0.95 inches) |
| Weight | 200g |
| Mounting | Integrated holes for wall or equipment mounting |
| LED Indicators | |
| The tri-color status LED can be disabled to reduce power consumption. | |
| Green Indication | Normal sampling |
| Red Indication | Alarm condition |
| Amber Indication | Low battery |
| Excitation Control | |
| The A2/E terminal can be configured as an excitation-control output for controlling power to an externally powered sensor or device. The excitation warm-up delay is programmable from: 10 to 240 seconds in 10-second increments | |
| Operating Environment | |
| Operating Temperature | -40 ~ +70 °C (-40 °F ~ 158 °F) |
| Operating Humidity | 0 ~ 95% RH, non-condensing |
| Clock Accuracy | ±1 mintue per month |
| Approval | CE, FCC |
Logger Memory Capacity
| Sampling Interval | Logging Capacity |
|---|---|
| 1 minute | 4 years |
| 10 seconds | 242 days |
| 1 second | 24 days |
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