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Portable Thermometer Thermocouple Data Loggers with SD Card

Portable Thermometer/Data Loggers with SD Card and Thermocouple Input



Volume discounts available
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Quantity Price each
1-4 C$555.48
5-9 C$527.71
10-24 C$516.60
25-49 C$494.38
50-99 C$483.27
100+ C$472.16

In stock

Lead Time (If not in stock): 14 weeks
Portable Thermometer/Data Loggers with SD Card and Thermocouple Input RDXL4SD RDXL4SD
  • SD Card, Real-Time Data Logger
  • Input Signals: T/C K, J, T, E, R/S, and RTD Pt100 Ω Measurement (RDXL4SD Only)
  • Display All Input Channels Simultaneously
  • Data Hold, Record Max and Min Reading

RDXL4SD Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Number of Channels
Input Type
Display Type
Supply Power
Communications Protocol

RDXL4SD logger is in the end of its life cycle. As a possible substitute & upgrade, please check out Newest Released 8 Channel Thermocouple Data Logger OM-HL-EH-TC Series for more advanced features with better price.

The Handheld RDXL4SD and RDXL12SD models are portable thermometer/data loggers with backlight display and built-in analysis functions. The data loggers are powered by an internal battery and are capable of sampling, processing and displaying measurements without being connected to a computer.
With their high resolution and fast analog to digital converter (ADC), the RDXL4SD and RDXL12SD meet the majority of data logging requirements in most industrial applications.
Real-time SD memory card data logger, built-in clock and calendar, real time data recorder, and sampling time set from 1 to 3600 seconds comes standard. Data logger can log data manually by setting the sampling time to zero.
These real-time data loggers, save the 4- or 12-channels temperature measuring data, along with the time information (year, month, date, minute, second) into the SD memory card and can down load to Excel. The end user can make any data or graphic analysis by themselves.

Embedded Microcontroller: Custom one-chip LSI device
LCD Display: 82 x 61 mm (3.23 x 2.40') with green color backlight
4 Channels: T1, T2, T3, T4, T1-T2
12 Channels: T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11 and T12
Sensor: Type J, K, T, E, R/S thermocouple probe Pt100 Ω RTD (European curve) for RDXL4SD model only
Resolution: 0.1/1°C or °F
Sampling Time: 1 to 3600 seconds
Memory Card: SD memory card 1 to 16 GB
Memory Recall: Max and min value
Sampling Time of Display: Approx 1 second
Data Output: RS232/USB PC computer interface
Power Off: Auto shut off saves battery life or manual off by push button
Operating Temperature: 0 to 50°C (32 to 122°F)
Operating Humidity: Less than 85% RH
Power Supply: Alkaline or heavy-duty DC 1.5V battery (UM3, AA) x 6 'AA'
Power Current: Approx DC 30 mA
Weight: 489 g (1.08 lb)
Dimensions: 177 H x 68 W x 45 mm D (7 x 2.7 x 1.9')
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Rated 5 out of 5 by from Easy to use, intuitive interface. Used this device to collect a days worth of thermal / temperature data, worked really well.
Date published: 2016-02-01
Rated 5 out of 5 by from Great Data logger Got two of these for temperature profiling of our freezers, very convenient to set up and use these. This model did not have an AC adapter - which could be handy especially for long term data recording (or redundancy) to prevent data loss due to battery draining out. Otherwise, this is a great unit for portability and convenience.
Date published: 2018-07-05
Rated 5 out of 5 by from Very versatile temp data logger Very versatile temp data logger that can handle different types of thermocouple. Can sample at various times and log onto an SD card and easily be viewed in a spreadsheet.
Date published: 2023-08-21
Rated 4 out of 5 by from Nice data logger, easy to use Purchased for manufacturing operations. Works great and easy to use. It has a 3 week leadtime but on time to commitment.
Date published: 2017-08-22
Rated 5 out of 5 by from Indispensible to our work. We have used Omega thermocouples for over 20 years. We still have some from then that still work. The data logging capabilities of the RDXL Series is a great value for documenting our work for our customers and in preventing costly failures.
Date published: 2017-03-04
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Where can I get a 9V power supply for this unit? I got the unit hot and now the battery compartment is warped.

Asked by: Marty
The external power supply for the meter is ADAPTER-SD.
Answered by: Temperature
Date published: 2020-04-09

Can this model display max/min for ALL 4 channels simultaneously?

Asked by: Donovan
Yes, the meter will display all four channels.
Answered by: Temperature
Date published: 2019-11-07

I need thermocouples that can be exposed to direct flame. Which ones would be compatible to this device?

Asked by: casscole17
Thank you for your inquiry! You can use bare thermocouple wire rated for the appropriate temperature range to directly measure the temperature of a flame. However, if you plan to measure for an extended duration of time, it would be best to select a thermocouple probe for durability and repeatability of your measurements. Lastly, the thermocouple you choose should have a mini connector to connect into this data logger.
Answered by: Application Engineer CK
Date published: 2021-05-31

RDXL 12 SD do you have a calibration manual???

Asked by: Laerie
Thank you for your inquiry. We believe the best assistance would come from speaking to us directly at 888-826-6342 ask for the Temperature Department Mon. – Fri. (HOURS 8:30AM - 5:30PM EST).
Answered by: Application Engineer CB
Date published: 2024-04-11

Good morning, Devise: RDXL 12SD Is it possible to apply a different Offset on the 12 channels? What method? * Type K and J thermocouple

Asked by: Dany D
The offset entered on the RDXL12SD will be for all channels not individually.
Answered by: ApplicationsEngineerANB
Date published: 2024-04-26

Besides the Temperature Offset, can this unit be calibrated. For example can the A/D converter be calibrated with a precise mV source. If not, what is done when buying with a NIST traceable certificate "-CAL"

Asked by: ChrisS
The Logger can be returned for a NIST calibration but the procedure is proprietary and not available to send out.
Answered by: ApplicationsEngineerANB
Date published: 2022-05-10
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Software for RDXL12SD
2 In Stock
Replacement hard case
15 In Stock
Soft case for RDXL4SD
13 In Stock
Spare USB interface cable
11 In Stock
AC adaptor
34 In Stock
Spare RS232 interface cable
0 In Stock
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