Temperature & humidity Ethernet transmitter
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Send Alerts by Email or Text
2GB SD Memory Card Supplied, Stores 7 Years of Data at 10 Second Intervals
Built-in Web Server - No Special Software Required
Virtual Chart Recorder
Built-in Backlit LCD Display
The iTHX-SD transmitter lets you record and monitor online Temperature, Relative Humidity and Dew Point over an Ethernet network or the Internet with no special software except a Web browser.
The iTHX-SD serves Active Web Pages to display real time readings,
display 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 JAVATM Applet that records a chart over the LAN or
Internet in real time. With the iTHX-SD, there is no need to
invest time and money learning a proprietary software program to log or chart the data.
SD Flash Memory
The iTHX-SD model comes complete with a removable 2 GB SD Flash Memory card that can store
up to seven years of readings taken at ten second intervals.
Records on SD Flash Cards
The ITHX-SD works as a data logger recording on widely available SD (Secure Digital) flash cards. The format is a simple
".txt" text file that is easily imported to spread sheets and other programs. It can be read on a PC or
MAC with a USB card reader. You can also download the data remotely over an Ethernet network or the Internet.
The iTHX-SD features two 1.5 Amp relays. With the easy Web-based setup page, the two relays can be
programmed for any combination of temperature or humidity, and high or low set points.
The relays can also be programmed to remain latched and require a manual reset if a limit is exceeded.
The iTHX-SD comes with a universal 100 to 240 Vac adapter. A standard 9 Volt
Alkaline battery (also included) allows the device to log data for up to 2 days without external ac power. A failure on the Ethernet network will not interrupt data logging.
The JAVA Applet chart scales are fully adjustable in real-time. For example,
the chart can display 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
and 0 to 100% RH) or within any narrow range such
as 20 to 30°C.
The iTHX-SD 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-SD 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 its IP address or an easy to remember name such as "Clean Room 5" or "Server Room 2"
in any Web Browser, and the iTHX-SD serves a Web Page with the current readings.
All iTHX-SD 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 mobile 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.
Display and Chart Two Channels
The iTHX-SD transmitters come complete with a temperature and humidity probe for measurement of a single location. With the addition of a second probe, the iTHX-SD transmitter can measure and display temperature, humidity and dew point in a second location up to ten feet away. The transmitter can display and chart absolute measurements in both locations, or a differential measurement between the two locations. The second probe requires no change to the basic iTHX-SD transmitter hardware, it can be added at the time of purchase or in the future. Omega offers a choice of industrial probes in 2" and 5" lengths, and a wand style for ambient indoor applications. A simple DB-9 "Y" connector is available for adding a second probe.
The iTHX-SD is great for monitoring temperature + humidity in applications such as:
clean rooms, computer rooms, HVAC systems, pharmaceutical and food processing and storage,
hospitals, laboratories, semiconductor fabs, electronic assembly, warehousing, museums,
manufacturing, greenhouses, farm animal shelters, and many more.
Relative Humidity (RH)
±2% for 10 to 90%;
±3% for 5 to 10% and 90 to 95%;
±4% for 0 to 5% and 95 to 100%
Hysteresis: ±1% RH
Response Time: 8 seconds, tau 63%
Resolution: 0.1%, 12 bit
Wand Probe: ±0.5°C for 5°C to 45°C; ±1°C for 0° to 5°C and 45° to 70°C
Industrial Probe: ±0.5°C for 5° to 45°C;
±1.5°C for -40° to 5°C and 45° to 124°C
*Note: extended temperature range is for Industrial probe only, the iServer's operating temp. is 0 to 60°C.
Response Time: 5 to 30 seconds, tau 63%
Resolution: 0.1°C, 14 bit
Wand Probe iTHP-W-6: 19mm Dia. 198mm Long
Cable with DB9 connector: 152mm Long
Cable operating temperature: 0 to 80°C
Industrial Probe iTHP-2, iTHP-5:
16mm Dia. 51mm Long or
16mm Dia. 137mm Long
Cable with DB9 connector: 0.9m Long or 3m Long
Cable operating temperature: -40 to 125°C
A New Alternative to Routine Calibration
Ethernet (RJ45): Fixed or autonegotiating 10/100BASE-T, Auto MDI/MDIX
TCP, UDP, SNMP, SMTP, NTP, ARP, ICMP, DHCP, DNS, HTTP, and Telnet
LCD Display 16 Digits
SD Flash Memory Card
2 GB card: 8 months of data storage at 1 second recording intervals, or 7 years at 10 second intervals
Two Relays 1.5A @ 30 Vdc
Embedded WEB Server
Serves WEB pages containing real-time data
and live updated charts within definable time intervals
Power Input: 9 to 12 Vdc,
ac power adapter (supplied):
Nominal Output: 9 Vdc @ 0.5A, Input: 100 to 240 Vac, 50/60 Hz
Back-up Battery: 9Vdc, Alkaline
Operating Temperature: iServer Unit: 0 to 60°C; ac Power Adapter: 0° to 40°C; Battery : -18 to 55°C; Storage Temperature: -40 to 85°C
Material: Steel metal case with wall mount bracket; Dimensions: 39H x 62W x 90D mm; Weight: 0.389 kg (iTHX-SD)
The iTHX-SD is supplied with a plug-in temperature and humidity probe that mounts on the instrument or an industrial temperature and humidity probe on a 3m cable. It is not necessary to take the iTHX-SD out of service for routine calibration. The temperature / humidity sensors store their own calibration offsets so are interchangeable without affecting accuracy, and they can be replaced for about the same cost as a typical re-calibration. OMEGA offers replacement sensors with 3-point traceable calibration certificates.