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Temperature and Humidity Virtual Chart Recorder


Item# iTHX-W3-2

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $574.47
5-9 $545.75
10-24 $517.02
25-49 $488.30
50-99 $459.58
100+ $430.85

In stock

Lead Time (If not in stock): 5 weeks
Temperature and Humidity Virtual Chart Recorder iTHX-W3-2 iTHX-W3-2
  • Web Server
  • Alarms by Email or Text Message
  • Accurate Readings
  • Data Logging

iTHX-W3-2 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.

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


View Temperature and Humiditywith a Web Browser

The OMEGA™ iTHX transmitter lets you monitorand record temperature, relative humidity, anddew point over an Ethernet network or the Internetwith no special software except a web browser.The iTHX serves active web pages to display real-timereadings, charts of temperature and humidity, or logdata in standard data formats for use in a spreadsheetor data acquisition program such as Excel orVisual Basic.
The virtual chart viewed on the web page is a JAVA™Applet that records a chart over the LAN or Internet inreal time. With the iTHX, there is no need to investtime and money learning a proprietary softwareprogram to log or chart the data.

Adjustable Charts
Chart scales are fully adjustable on the fly. Forexample, the chart can display one minute, onehour, one day, one week, one month or one year.Temperature and humidity can be charted across thefull span [-40 to 124°C (-40 to 254°F)], and 0 to 100%RH or within any narrow range such as 20 to 30°C(68 to 86°F).

Award-Winning Technology
The iTHX is simple to install and use, andfeatures OMEGA’s award-winning iServer technologythat requires no special software except a webbrowser.The iTHX connects to an Ethernet network with astandard RJ45 connector and sends data in standardTCP/IP packets. It is easily configured with a simplemenu using a web browser and can be passwordprotected.From within an Ethernet LAN or over the Internet,the user simply types the IP address or an easy-to-remembername such as “Cleanroom5” or “ServerRoom” in any web browser, and the iTHX serves aweb page with the current readings.

Email Alarms
All iTHX models that are on a LAN that isconnected to the Internet can trigger an alarm thatcan be sent by email to a user or a distribution listanywhere in the world, including text messages tocell phones and PDA’s.

Link to Web CAM or IP Camera
The web page includes a link to a “web cam” or “IPcamera” (not included). If you get a message about analarm condition, you can quickly click on the link toview the actual scene over the Internet.

Sensor and Calibration
The iTHX transmitterscome complete with atemperature andhumidity probe formeasurement of a singlelocation. We offer achoice of industrial probesin 2" (with a 3' cable) or 5"length (with a 10' cable)instead of the commercialwand style probe which isdesigned for ambient indoorapplications.It is not necessary to take theiTHX out of service for routinecalibration. The temperature/humidity sensors areinterchangeable and can bereplaced for about the same cost as a typical calibration.OMEGA offers replacement probeswith optional 3-point NIST traceablecalibration certificates.

Typical Applications
The iTHX is great formonitoring temperature andhumidity in applications such as:clean rooms, computer rooms,HVAC systems, pharmaceuticaland food processing and storage,hospitals, laboratories,semiconductor labs, electronicassembly, warehousing, museums,manufacturing, greenhouses and,farm animal shelters.


Accuracy/Range at 25°C-Non-Condensing:
    10 to 90%: ±2.75%
    5 to 10% and 90 to 95%: ±3%
    0 to 5% and 95 to 100%: ±4%
Non-Linearity: ±3%
Hysteresis: ±1% RH
Response Time: 8 seconds, tau 63%
Repeatability: ±0.1%
Resolution: 0.1%, 12 bit

    Wand Probe: ±0.5°C (±1°F) for 5 to 45°C (41 to 113°F)
up to ±1°C (up to ±2°F) for 0 to 5°C and 45 to 70°C (32 to 41°F and 113 to 158°F)
    Industrial Probe: (see chart in manual) ±0.5°C (±1°F) for 5 to 45°C (41 to 113°F)
up to ±1.5°C (up to ±2.7°F) for -40 to 5°C and 45 to 124°C (-40 to 41°F and 113 to 255°F)
** Note: Extended temperature range is for industrial probe only, refer to the iServer’s operating temperature spec.
Response Time: 5 to 30 seconds, tau 63%
Repeatability: ±0.1°C
Resolution: 0.1°C, 14 bit

iTHP-W:198 x 19 mm Dia ( 7.8 x 0.75")
    Cable: 152 mm L (6") with DB9 conn.
    Cable Operating Temperature: 0 to 80°C (32 to 176°F)
iTHP-5, iTHP-2: 137 or 51 L x 16 mm Dia (5 or 2 x 0.63")
    Housing Material: 316 SS
    Cable: 3 or 0.9 m L (10 or 3')
    Cable Operating Temperature: -40 to 125°C (-40 to 257°F)


Ethernet (RJ45): Fixed or autonegotiating 10/100BASE-T, auto MDI/MDIX
Sensor: Digital 4-wire (DB9 connector)
Supported Protocols: TCP, UDP, SNMP, SMTP, NTP, ARP, ICMP, DHCP, DNS, HTTP, and Telnet
Management: Device configuration and monitoring through embedded web server
Software: OPC Server macro for data logging in Excel program compatible with Windows® operating systems
Embedded Web Server: Serves web pages containing real-time data and live updated charts within definable time intervals

Power Input: 5 Vdc @ 200mA
Safety Qualified AC Power Adaptor (Included):
    Nominal Output: 5 Vdc @ 0.6A
    Input: 100 to 240 Vac, 50/60 Hz

Operating Temperature: 0 to 70°C (32 to 158°F) for iTHX-W3
-40 to 85°C (-40 to 185°F) for iTHX-W3-2 or iTHX-W3-5
AC Adaptor (included): 0 to 40°C (32 to 104°F)
Storage Temp: -40 to 125°C (-40 to 257°F)
Packaging Material: Valox® 364 PBT case with wall mount bracket
  • Web Server
  • Alarms by Email or Text Message
  • Accurate Readings
  • Data Logging
  • No Special Software Required
  • Compatible with Omega Enterprise Gateway
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Rated 5 out of 5 by from Easy to integrate into server room monitoring We use Nagios to monitor our servers. With the command line port access was very easy to write script to poll these devices in both our company's locations to monitor and have alerts for humidity and temperature in our server rooms.
Date published: 2016-08-15
Rated 5 out of 5 by from Great service Product was easy to order, delivery was fast and convenient
Date published: 2022-11-22
  • y_2024, m_7, d_23, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_2
  • loc_en_US, sid_ITHX-W3-2, prod, sort_[SortEntry(order=HELPFULNESS, direction=DESCENDING), SortEntry(order=POSITIVE_FEEDBACK, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_omega
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 4ms
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ITHX-W-3 - How large of a room can this cover? 

Thank you for your question. The unit will monitor temp/rh around the area wherever the probe is placed.
Answered by: Application Engineer PV
Date published: 2022-09-08

Do the ITHX-W-3 data loggers come calibrated with certification?

Asked by: Crystal
Thank you for your question. The unit is supplied with Certificate Of Conformance (CAL-1). If you require a certificate with calibration points you would have to order:
Answered by: Raptor
Date published: 2021-01-23

Does the Omega ITHX-W3 work in Windows 10? Can we use it to record real time data?

Asked by: Helen
Thank you for your question. Windows 10 could be an issue and it does not record data. We recommend you review IS2-THB-B
Answered by: Application Engineer PV
Date published: 2023-06-12

Is the omega itch-w3 class 1 Div compliant

Asked by: Dave22
Thank you for your question. Unfortunately, the Ithx-w3 is not class 1 div compliant.
Answered by: Application Engineer PV
Date published: 2021-07-14
  • y_2024, m_7, d_23, h_8CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_4
  • loc_en_US, sid_ITHX-W3-2, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_omega
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 15ms
Replacement universal ac power adapter
0 In Stock
Industrial 51 mm (2") Probe, Cable 0.9 m (3 ft) with DB9 Connector 1
0 In Stock
Replacement wand probe, 203 mm (8"), 152 mm (6") cable
0 In Stock
Industrial 137 mm (5") Probe, Cable 3 m (10 ft) with DB9 Connector 1
0 In Stock
Porous Polyethylene commercial wand probe cap, for wet environments, 10 caps per pack
13 In Stock
Porous Polyethylene Industrial Probe Cap, for wet environments, 10 pack
0 In Stock
Replacement Mounting Kit, for external industrial probes
0 In Stock
Calibration kit, 33% and 75% RH standards
0 In Stock
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