RTDTemp101A Data Logger

Stores over a million readings and offers a software configurable memory wrap option, battery life of up to 10 years, ultra-fast download speeds

$296.00 CAD
Normally ships in 1-2 Weeks

  Request Quote

Can We Help You?


Our product experts are here to help you find the right solution for your application!

This Data Logger Requires IFC200 USB Cable & Software Package.

Don’t be fooled by the small size, the RTDTemp101A temperature data logger offers a wealth of features with a compact form factor about the size of a matchbox. When used with an external RTD probe, this data logger measures temperatures from -200°C - 850°C (-328°F - 1562°F).

The low power design of this data logger provides a battery life of up to 10 years but still delivers ultra-fast download speeds. The RTDTemp101A can store over a million readings and offers a software configurable memory wrap option. In addition to having a pushbutton start stop, the device also can be programmed to a delay start up to 18 months in advance.

Using the MadgeTech Data Logger Software, data from the RTDTemp101A is easily downloaded, displayed and formatted for reports or the data can be exported to Excel for further presentation customization.

This versatile device can be used for a wide variety of applications such as calibration chamber monitoring, HVAC applications, environmental studies or precision temperature recording for medical and pharmaceutical applications.

RTD probe sold separately.

• 10 year battery life
• ± 0.05°C (± 0.09°F) accuracy
• Multiple start/stop function
• Ultra high speed download
• 1,340,000 reading storage capacity
• Memory wrap
• Precision RTD sensing element
• Battery life indicator
• Optional password protection
• Programmable high and low alarms
• Field upgradeable


Temperature Sensor**

External 100 Ω RTD (Sold Separately)

Temperature Range

18 Ω - 400 Ω

-200 °C - 850°C (-328°F - 1562°F), probe dependent

Temperature Resolution

0.0001 Ω, 0.01°C (0.018°F), probe dependent

Temperature Calibrated Accuracy

± 0.015 Ω, ± 0.05°C (± 0.09°F), probe dependent

Calibrated Accuracy Range***

18 Ω - 200 Ω

-200°C - 265°C (-328°F - 509°F) 

Input Connection****

Removable screw terminal; 2, 3, or 4 wire interface

Temperature Effect on Span

< 2 ppm/°C

Temperature Effect on Offset

< 10 ppm cumulative over entire range



1,340,000 readings; software configurable memory wrap 
670,000 readings in multiple start/stop mode

Reading Rate

1 reading every 1 s to 1 reading every 24 hrs

Wrap Around



Programmable high and low limits; alarm is activated when temperature reaches or exceeds set limits

Baud Rate


Start Modes

Immediate start

Delay start up to 18 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 for 3 s and then the green LED will flash for 2 s.  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 mode


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


Digital calibration through software

Calibration Date

Automatically recorded within device

Push-Button Start


Battery Type

3.6 V lithium battery included; user replaceable

Battery Life

10 years typical at a 15 minute reading rate

Data Format

Date and time stamped °C, °F, K, °R

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


ABS plastic


0.8 oz (24 g)


1.4 in x 2.2 in x 0.6 in (36 mm x 56 mm x 16 mm)

Operating Environment

-40°C - 80°C (-40°F - 176°F), 0% RH - 95% RH, Non-condensing

Required Interface Package





**Temperature specifications based on ideal 100 Ω Pt RTD compliant with IEC 751 (1983) and ITS-90, 5000 Ω FSR (accuracy based on 36 in lead wire RTD with 4 wire configuration)

***Calibrated accuracies based on standard MadgeTech calibrations for 0 Ω - 200 Ω range

****100 Ω, 2 or 4 wire RTD probes are recommended for the most accurate performance.  Most 100 Ω, 3 wire RTD probes will work, but MadgeTech cannot guarantee the accuracy.  To determine whether or not the 3-wire RTD probe will work, the resistance between the two same coloured wires should be less than 1 Ω (Note: please contact the manufacturer of the RTD probe for questions on the resistance)

• Calibration chamber monitoring
• Medical and pharmaceutical
• Environmental studies
• Precision temperature recording

IFC200 Data Logger Interface
USB interface cable package for standard series data loggers
Normally ships in 1-2 Weeks
$160.65 CAD
LTC-7PN Lithium Battery
3.6 V, lithium battery, 750 mAH
Normally ships in 1-2 Weeks
$14.00 CAD
Rugged RTD Probe with Metal Strain Relief
100 Ω, 4 wire RTD probe with metal strain relief wrapped, available with a 6 in or 12 in sheath
Normally ships in 1-2 Weeks
Starting At
$187.50 CAD
RTD Probe (36 in) Precision 100 Ω 4-Wire RTD Probe
Precision 100 Ω, 4 wire RTD probe, with a 6 in or 12 in sheath (36 in leads)
Normally ships in 1-2 Weeks
Starting At
$187.50 CAD
Weatherproof enclosure designed for use with MadgeTech's 101A series data loggers
Normally ships in 1-2 Weeks
$47.25 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