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Temperature and Humidity Virtual Chart Recorder


Temperature and Humidity Virtual Chart Recorder | iTHX-W3

Temperature and Humidity Virtual Chart Recorder

SGD869.98 iTHX-W3

  • Web Server
  • Alarms by Email or Text Message
  • Accurate Readings
  • Data Logging
  • No Special Software Required
  • Compatible with Omega Enterprise Gateway
Process Measurement and Control Instruments - View related products


View Temperature and Humidity with a Web Browser

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

Adjustable Charts
Chart scales are fully adjustable on the fly. For example, the chart can display one minute, one hour, one day, one week, one month or one year. Temperature and humidity can be charted across the full 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, and features OMEGA’s award-winning iServer technology that requires no special software except a web browser. The iTHX connects to an Ethernet network with a standard RJ45 connector and sends data in standard TCP/IP packets. It is easily configured with a simple menu using a web browser and can be password protected. From within an Ethernet LAN or over the Internet, the user simply types the IP address or an easy-to-remember name such as “Cleanroom5” or “Server Room” in any web browser, and the iTHX serves a web page with the current readings.

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

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

Sensor and Calibration
The iTHX transmitters come complete with a temperature and humidity probe for measurement of a single location. We offer a choice of industrial probes in 2" (with a 3' cable) or 5" length (with a 10' cable) instead of the commercial wand style probe which is designed for ambient indoor applications. It is not necessary to take the iTHX out of service for routine calibration. The temperature/ humidity sensors are interchangeable and can be replaced for about the same cost as a typical calibration. OMEGA offers replacement probes with optional 3-point NIST traceable calibration certificates.

Typical Applications
The iTHX is great for monitoring temperature and humidity in applications such as: clean rooms, computer rooms, HVAC systems, pharmaceutical and food processing and storage, hospitals, laboratories, semiconductor labs, electronic assembly, 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
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What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/Desc.
Availability: 13 weeks
iServer MicroServer for temperature + humidity and dew point, commercial wand probe on 152 mm (6") cable with DB9 connector
Availability: 13 weeks
iServer MicroServer with industrial 51 mm (2") probe on 0.9 m (3') cable with DB9 connector
Availability: 13 weeks
iServer MicroServer with industrial 137 mm (5") probe on 3 m (10') cable with DB9 connector
Availability: 7 weeks
Required universal ac power adapter
Availability: 13 weeks
Replacement wand probe, 203 mm (8"), 152 mm (6") cable
Availability: 13 weeks
Replacement industrial probe 51 mm (2"), 0.9 m (3') cable with DB9
Availability: 13 weeks
Replacement industrial probe 137 mm (5"), 3 m (10') cable with DB9
Consult Sales  
Extension cable, 0.9 m (3') with DB9 connectors
Availability: 1 week
Porous Polyethylene commercial wand probe cap, for wet environments, 10 caps per pack
Availability: 7 weeks
Porous stainless steel probe cap, 5 micron porosity, for dusty, pressurized (less than 35 psi) environments
Availability: 1 week
Porous Polyethylene Wand Probe Cap, for wet environments, 10 pack
Availability: 7 weeks
Porous Polyethylene Industrial Probe Cap, for wet environments, 10 pack
Availability: 1 week
Replacement Mounting Kit, for external industrial probes
Consult Sales  
NIST-traceable calibration certificate. 3 points of 25%, 50%, 75% RH, temperature 25 degC, for new units
Availability: 6 weeks
Calibration kit, 33% and 75% RH standards
Availability: 13 weeks
Replacement Industrial 51mm (2") Probe, cable 0.9m (3 ft) with DB9 connector and NIST traceable calibration certificate
Availability: 13 weeks
Replacement Industrial 137mm (5") Probe, cable 3m (10 ft) with DB9 connector and NIST traceable calibration certificate
All prices on this site are shown in Singapore Dollars.
Note: Volume discounts available.


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