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Pressure, Humidity and Temperature Data Logger



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1-4 $332.58
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Lead Time (If not in stock): 8 weeks
Pressure, Humidity and Temperature Data Logger OM-CP-PRHTEMP101A OM-CP-PRHTEMP101A
  • 10 Year Battery Life
  • 1 Second Reading Rate
  • Multiple Start/Stop Function
  • Ultra High Speed Download

OM-CP-PRHTEMP101A Model Options

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Measurement Type
Number of Measurements
Input Type
Maximum Samples
Data Interface
Max Sampling Rate
Additional Feature

The OM-CP-PRHTEMP101A is a low cost, state-of-theart pressure, relative humidity and temperature data logger, specifically designed to be compact and portable for use in a variety of applications such as museum and archive preservation, shipping and transportation, warehouse monitoring, HVAC, clean rooms, clinical laboratories and altitude validation and studies.

The OM-CP-PRHTEMP101A offers a 10-year battery life, 1 second reading rate, multiple start/stop functions, ultra-high speed download capability, optional memory wrap, battery life indicator, optional password protection, programmable high-low alarms and more.

Using the software, starting, stopping and downloading from the OM-CP-PRHTEMP101A is simple and easy. Graphical, tabular and summary data is provided for analysis and data can be viewed in °C, °F, °R, K, for the temperature channel, %RH, mg/mL and dew point for the humidity channel, and mbar, PSI, inHg, mmHg, atm, Torr, Pa, m, kPa, MPa for the pressure channel.

The OM-CP-PRHTEMP101A is a major leap forward in both size and performance, Its real-time clock ensures that all data is time and date stamped. The storage medium is non-volatile memory, providing maximum data security even if the battery becomes discharged.

Data retrieval is simple. Simply connect the data logger to an available USB port and the 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 tabular format and can also be exported to a text or Microsoft Excel file for further calculations.

The OM-CP-PRHTEMP101A was designed with our customers in mind. There are free firmware upgrades for the life of the product so that data loggers already deployed in the field can grow with new technological developments. Units do not need to be returned to the factory for upgrades, this can be done automatically from any PC.

Sensor: Piezoresistive
Range: 250 to 1300 mbar
Resolution: 0.02 mbar
Calibrated Accuracy: 10 mbar

Sensor: Capacitive Polymer
Range: 0 to 95% RH
Resolution: 0.1 %RH
Calibrated Accuracy: 3% RH

Sensor: Precision RTD element
Range: -40 to 80°C (-40 to 176°F)
Resolution: 0.01°C (0.018°F)
Calibrated Accuracy: ±0.5°C (0.9°F)

Reading Rate: 1 reading every second up to 1 reading every 24 hours.
Readings Per Channel: 688,128
Readings (Manual or Trigger Mode): 412,876
Memory Wrap Around: Yes (software selectable)
Start Modes:
    • Immediate start
    • Delay start up to 18 months
    • Multiple pushbutton start/stop
Stop Modes:
    • Manual through software
    • Timed (specific date and time)
Real Time Recording: The device may be used with a PC to monitor and record data in real time.
Alarm: Programmable high and low limits; alarm is activated when recording environment reaches or exceeds set limits (pressure channel only).
LED Functionality
Green LED blinks:
    • 10 second rate to indicate logging
    • 15 second rate to indicate delay start mode/Standby (Waiting to start)
Red LED blinks:
    • 10 second rate to indicate low battery and/or full memory
    • 1 second to indicate alarm condition met
Password Protection: An optional password may be programmed into the device to restrict access to configuration options. Data may be read without the password.
Engineering Units: Native measurement units can be changed to display measurement units of another type.
Calibration: Digital calibration through software
Calibration Date: Automatically recorded within device
Battery Type: 3.6V lithium battery included; user replaceable
Battery Life: 10 years typical at a 15 minute reading rate
Data Format: Date and time stamped °C, °F, °R, K, %RH, mg/mL, Dew Point, mbar, PSI, inHg, mmHg, atm, Torr, Pa, kPa, m, MPa units specified through software.
Time Accuracy: ±1 minute/month @ 25°C
Computer Interface: USB (interface cable required); 115,200 baud
Software: Windows XP SP3/Vista/7 and 8 (32-bit and 64-bit)
Operating Environment: -40 to 80°C (-40 to 176°F), 0 to 95 %RH non-condensing, 0.002 to 100 psia
Dimensions: 36 L x 56 W x 16 mm D (1.4 x 2.2 x 0.6')
Weight: 24 g (0.8 oz)
Materials: ABS Plastic
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Rated 5 out of 5 by from Quick response al the time! I already bought this equipment a few days ago and I'm glad with all the performance while placing PO's via web.
Date published: 2017-06-02
Rated 1 out of 5 by from Need to buy a wireless Transmitter to communicate The unit looks half decent, but then i realized that is doesn't have any usb port on it. Turns out you have to spend another 200$ to buy a wireless transmitter to talk to the data logger.
Date published: 2022-03-10
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Is it possible to clear the memory on the dataloggers? If so, how would I do that? Or do I have to wait until Memory Wrap?

Asked by: KC11
Hello, thank you for your question. The previous data is automatically erased every time to you start a new logging session, so there is no need to manually erase it.
Answered by: DA Engineer
Date published: 2021-05-10

Is the Omega software compatible with Windows 10 operating system?

Asked by: Thumper
Thank you for your question. Yes, the software for OM-CP logger is Win 10 compatible.
Answered by: Application Engineer PV
Date published: 2023-09-01

We purchased the OM-CP-PRHTEMP101A. We have two data cables already the OM-CP-IFC200 USB. The USB cables connect, and the lights are on, but does not show up as an available device in the OM-CP data logger software (OM-CP_4_2_25_11).

Asked by: GWeng
We will require more information to help on this question, please email the DAS team at
Answered by: PVENGR
Date published: 2023-12-22

According to the manual, this monitor (OM-CP-PRHTEMP101A) requires annual calibration. Do we send it back to omega to have this done? If so, how long does it take, and how much does it cost. If not, who can do the calibration? Thank you!

Asked by: Daniel9160
The software does include the ability to calibrate the unit however you must have a humidity/temperature/pressure chamber to do that. If you do not have that equipment than please contact our customer service department at 800-872-9436 they can give you a quote with pricing and lead time for the calibration.
Answered by: cwengineer3
Date published: 2020-06-11

The manual for the OM-CP-PRHTEMP101A indicates the alarm settings are for only pressure and not temperature nor humidity. Is that true?

Asked by: Thumper
Thank you for your question. We will require more information to help on this question, please email the DAS team at DAS@OMEGA.COM
Answered by: Application Engineer PV
Date published: 2023-09-13

Could this be used with linux for live data logging? (e.g. Does it use a standard serial communication protocol, or Mass Storage Device?) Or is it only possible to get data with the windows software?

Asked by: Jarom
Thank you for your question. Unfortunately, there is no protocol available for custom programming. You must purchase OM-CP-IFC200 ( software and cable) to configure he logger.
Answered by: Application Engineer PV
Date published: 2021-05-25

What does memory wrap means please ?

Asked by: chaps06
Hello Memory Wrap means that during a recording session, once the logger runs out of memory, it will start back to the first memory block and overwrite from there to continue logging.
Answered by: JA Engineer
Date published: 2020-06-12

The Item# OM-CP-PRHTEMP101A shown in the manual appears to have a headphone-type jack. Is the cable to connect the Item# OM-CP-PRHTEMP101A to the computer USB provided with it, or is that a separate purchase? No cable is listed in accessories.

Asked by: Thumper
Thank you for your question. The OM-CP-IFC200 interface cable is required to configure the logger.
Answered by: Application Engineer PV
Date published: 2023-09-05
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