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  • This product is no longer available.Please see OM-CP-OCTTCTEMP-A2 for a newer product with improved features!


The OM-CP-OCTTEMP-A is an 8-channel, battery-powered, stand-alone, thermocouple-based temperature data logger. The OM-CP-OCTTEMP2000 is the same 8-channel thermocouple data logger but with an LCD display. The OM-CP-OCTTEMP2000 features on screen minimum, maximum and average statistics, as well as a user configurable graphics screen that allows for any combination of channels to be displayed.

These all-in-one compact, portable, easy to use devices will measure and record up to 500,000 temperature measurements per channel (channels can be disabled to increase memory). The OM-CP-OCTTEMP-A and OM-CP-OCTEMP2000 are a major leap forward in both size and performance. The real-time clock ensures that all data is time and date stamped. The storage medium is non-volatile solid state memory, providing maximum data security even if the battery becomes discharged.

The data logger’s small size allows it to fit almost anywhere. Data retrieval is simple. Plug it into an available COM port and our easy-to-use Windows software does the rest. The software converts your PC into a real-time strip chart recorder. Data can be printed in graphical or tabular format and can be exported to a text or Microsoft file.


Internal Channel: 1
Temperature Accuracy:
±0.5°C (0 to 50°C), ±0.9°F (32 to 122°F)
Temperature Resolution: 0.05°C
Temperature Range:
-20 to 60°C (-4 to 140°F)
Thermocouple Channels: 8
Thermocouple Input Types:
J, K, T, E, R, S, B, N
Thermocouple Connection: Subminiature female jack
Cold Junction Compensation: Automatic, based on internal channel
Maximum Thermocouple Resistance:
1000Ω, 100Ω recommended
External Thermocouple Channel
Accuracy* (Uniform 20°C Internal Temperature):
J, K, T, E, N
: ±0.5°C
R, S, B: ±2.5°C
J, K, T, E, N:
R, S, B: 0.5°C
Temperature Types and Ranges:
Type J:
-210 to 760°C (-346 to 1400°F)
Type K: -260 to 1370°C (-436 to 2498°F)
Type T: -260 to 400°C (-436 to 752°F)
Type E: -260 to 980°C (-436 to 1796°F)
Type R: -50 to 1760°C (-58 to 3200°F)
Type S: -50 to 1760°C (-58 to 3200°F)
Type B: 60 to 1820°C (140 to 3308°F)
Type N: -260 to 1300°C (-436 to 2372°F)

*accuracy does not include errors due to thermocouple

Memory: 500,000 readings/channel (channels can be disabled to increase memory)
Temperature Calibration: Digital calibration is available through software
Calibration Date: Automatically recorded within device to alert user when calibration is required
Recording Interval: 4/sec to 1/day selectable in software
Start Time: Start time and date are programmable through software
Real Time Recording: Device maybe used with PC to monitor and record data in real time
Power: 9V lithium battery (included) or external power via included ac adaptor, data logger switches to battery power if ac power is lost
Battery Life (@ 25°C and 10 min recording interval):
18 months typical;
OM-CP-OCTTEMP2000: 18 months typical with display and blacklight off, 4 months typical with continuous display use (backlight off)
Time Accuracy: ± 1 minute/month when RS-232 port is not in use
Data Format: Date and time stamped, °C, °F, °K, °R, mV
Computer Interface: PC serial, RS232C COM or USB (interface cable required); 115,200 baud
Software: XP SP3/Vista/7 and 8 (32-bit and 64-bit)
Operating Environment: -20 to 60°C (-4 to 140°F)
5 to 95% RH non-condensing

68 H x 183 W x 32 mm D (2.7 x 7.24 x 1.26'):
68 H x 183 W x 36 mm D (2.7 x 7.24 x 1.39')
Weight: OM-CP-OCTTEMP-A; 490 g (17.3 oz)
OM-CP-OCTTEMP2000: 480 g (16.9 oz)
Material: Black anodized aluminum

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Rated 2 out of 5 by from OM-CP-OCTTEMP2000 As usual the software is very glitchy and slow...virtually unusable. Documentation is not up to date.
Date published: 2017-08-10
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We monitor temp in a 32' long oven (it have a conveyor, similar to pizza's ovens). Oven runs around 400F and lectures given were negative (not follow logic). I would like to be contacted via e-mail to share charts given by this same device.

Asked by: Shiro_7789
Your question has been sent to Das Engineering Support for review and they will contact you once they review.
Answered by: Eagle
Date published: 2020-06-17

I need to download temperature data to PC in pseudo-real-time (at least every hour). Does the software allow scripting so that this can be automatically?

Asked by: troy
Hello Troy The software does allow you to record in real time off the screen of your computer, you can set the reading intervals as fast as one reading a second, to as slow as one every 12 hours. For real time recording you will have to keep the logger connected to the computer via USB at all times.
Answered by: JA Engineer
Date published: 2020-05-15

Can the actual logger be placed and operated at temperatures < -40 degrees Celsius or just the thermocouples can go upto these temperatures?

Asked by: Apurva
The OM-CP-OCTTEMP2000 operating temperature is -20 to 60°C (-4 to 140°F). The accuracy of the unit is based on this temp environment: ±0.5°C (0 to 50°C), ±0.9°F (32 to 122°F). It is best to use the proper thermocouple probe to measure -40 deg c Thank you for your question.
Answered by: Application Engineer
Date published: 2019-07-10

Is the NIST Cert to ISO 17025?

Asked by: Temperature_user
Unfortunately, as of right now we cannot provide 17025 calibration, but we are working towards offering that in the future. Thank you for connecting with Omega.
Answered by: Jane
Date published: 2019-05-20

I am planning to use the data loggers to monitor freeze drying temperatures in a freeze drier from temperatures minus 405 degrees Celsius to positive 40 degrees Celsius. Can these data loggers be used for this application? Appreciate your help.

Asked by: Apurva
Thanks for your question. The lowest temperature we can reach is -260 DegC with Type K Thermocouple. If the application needs to go low around -405 DegC, this product may not able to meet the requirement.
Answered by: Jane
Date published: 2019-05-15
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