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
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.
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).
The iTHX is simple to install and use, and
features OMEGA’s award-winning iServer technology
that requires no special software except a web
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
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.
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
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
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
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,
semiconductor labs, electronic
assembly, warehousing, museums,
manufacturing, greenhouses and,
farm animal shelters.
SENSOR SPECIFICATIONS RELATIVE HUMIDITY (RH) Accuracy/Range: 10 to 90%: ±2% 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
TEMPERATURE Accuracy/Range**: 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
PROBE SPECIFICATIONS 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)
iSERVER SPECIFICATIONS INTERFACES 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 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
ENVIRONMENTAL 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
† All amounts shown in USD Note: Volume discounts available.
Rated 5 out of
Ralph Siegler from
Easy to integrate into server room monitoringWe 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.