Bridge101A Data Logger

Measures and records voltage, available in three different measurement ranges, reading rate of up to 4 Hz with memory capacity of 1,000,000 readings

Starting At
$728.00 CAD
Normally ships in 1-2 Weeks

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This Data Logger Requires IFC200 USB Cable & Software Package.

The Bridge101A Data Logger measures and records voltage, typically used in conjunction with strain gauges, load cells or other low-level DC voltage sources. This device is designed to accurately measure and record the output of the gauge to determine parameter levels such as stress, torque, strain, and pressure on a structure or item over a period of time.

Available in three different measurement ranges (±30 mV, ±160 mV or ±1200 mV), the Bridge101A offers a reading rate of up to 4 Hz with memory capacity of 1,000,000 readings (memory wrap optional). The device can be configured to start at a specified date and time up to 24 months in advance and the pushbutton start/stop feature allows the user to initiate or cease logging data in the field if desired.

The MadgeTech Data Logger Software offers user programmable Engineering Units which allows collected data to be presented in the established unit being measured. Equipped with endless data analysis and reporting tools, the MadgeTech software simplifies device management and provides the user with graph, tabular or summary reports with the ability to export data to Excel as needed.

Note: MadgeTech recommends using 350 or 1000 Ω strain gauges. 120 Ω strain gauges can be used with the Bridge101A but it is not recommended as it will reduce the battery life, potentially increase noise level and limit the low end temperature operation.

• Multiple Start/Stop functions
• Ultra high speed download
• 1 million reading storage capacity
• Memory wrap
• Battery life indicator
• Optional password protection
• Programmable alarm
• Field upgradeable


Bridge Range

±30 mV, ±150 mV, ±1000 mV

Bridge Resolution

± 30 mV

1 μV 

± 150 mV 

5 μV 

± 1000 mV

50 μV 

Bridge Accuracy

± 30 mV

± 0.01% FSR; ± 3 μV 

± 150 mV

± 0.01% FSR; 16 μV 

± 1000 mV

± 0.01% FSR; 120 μV 



1,000,000 readings; software configurable memory wrap; 
330,000 readings in multiple start/stop



Reading Rate

4 Hz to 1 every 24 hrs

Baud Rate


Start Modes

Immediate start

Delay start up to 24 months

Multiple pushbutton start/stop

Stop Modes

Manual through software

Timed (specific date and time)

Multiple Start/Stop Mode

Start and stop the device multiple times without having to download data or communicate with a PC

Multiple Start/Stop Mode Activation

To start the device:

Press and hold the pushbutton for 5 s, the green LED will flash during this time. The device has started logging.

To stop the device:

Press and hold the pushbutton for 5 s, the red LED will flash during this time. The device has stopped logging.

Real Time Recording

The device may be used with PC to monitor and record data in real time

LED Functionality

Green LED blinks:

10 s rate to indicate logging, 15 s rate to indicate delay start

Red LED blinks:

10 s rate to indicate low battery and/or full memory, 1 s rate to indicate an alarm condition

Password Protection

An optional password may be programmed into the device to restrict access to configuration options.

Data may be read out without the password

Engineering Units

Native measurement units can be scaled to display measurement units of another type. This is useful when monitoring voltage outputs from different types of sensors such as strain gauges and load cells

Battery Type

3.6 V lithium battery included; user replaceable

Battery Life

10 months typical at a 1 min reading rate with a 350 Ω load 
2 years typical at a 1 minute reading rate with a 1000 Ω load

Time Accuracy

± 1 min/month (at 20°C / 68°F, stand alone data logging)

Computer Interface

USB (interface cable required); 115,200 baud


XP SP3/Vista/Windows 7/Windows 8 (MadgeTech 4 Only)


ABS Plastic


1.4 in x 2.5 in x 0.6 in (36 mm x 64 mm x 16 mm)

Operating Environment

-40°C - 80°C (-40°F - 176°F), 0% RH - 90% RH, Non-condensing

Required Interface Package


Nominal Range

± 30

± 150

± 1000

Measurement Range

± 30 mV

±160 mV

±1200 mV


1 μV

5 μV

50 μV

Calibrated Accuracy

± 0.01% FSR; ±3 μV 

± 0.01% FSR; ± 16 μV 

± 0.01% FSR; ± 120 μV

Input Range

0 V - 2.5 V

Reference Voltage

2.5 V

• Strain gauge
• Load cell
• Pressure transducer
• Torque sensors
• Load bolts
• Position transducer

LTC-7PN Lithium Battery
3.6 V, lithium battery, 750 mAH
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$14.00 CAD
IFC200 Data Logger Interface
USB interface cable package for standard series data loggers
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$160.65 CAD
Weatherproof enclosure designed for use with MadgeTech's 101A series data loggers
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$47.25 CAD
One set of replacement O-rings for the Waterbox101A
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$6.75 CAD
Terminal Block
Pluggable terminal block for use with MadgeTech data loggers
Normally ships in 1-2 Weeks
Starting At
$4.05 CAD
MadgeTech 4 Secure Validation Software Package
IQ/OQ/PQ secure software validation workbook and software package
Normally ships in 1-2 Weeks
$1,890.00 CAD