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ITHX-SD-Series

Chart Recorder for Temperature and Humidity

  • Charting Web Server Application
  • Alarms by Email or Text Message
  • Record Years of Data on Popular SD Cards
  • Temperature


The ITHX Series recently received a hardware upgrade. If there's an issue with the probe during use, please refer to the link at the bottom of the page under 'Software and Drivers' to download the firmware update.

While this item has an extended lead time, our ISERVER2-PROBE series offer similar specs and shorter wait times.
ITHX-SD-Series
From C$ 1,114.47
Chart Recorder for Temperature and Humidity ITHX-SD-Series ITHX-SD-Series
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Product Overview
  • AC Adaptor Operating Temperature 0 to 40 °C
  • Approvals CE, FCC-B
  • Battery life Back-up Battery Life: up to 60 hr, with reading interval of 1 min
  • Battery Operating Temperature -18 to 55 °C
  • Battery Size and Type Alkaline 9V
  • Certifications NIST Traceable Calibration
  • Configuration Internal Web UI
  • Data Interface Ethernet
  • Data Interface Note Ethernet : (RJ45) Fixed or auto negotiating 10/100BASE-T, AUTO MDI/MDIX Supported Protocols:TCP, UDP, SNMP, SMTP, NTP, ARP, ICMP, DHCP, DNS, HTTP, and Telnet
  • Display Note 16 digits, 6mm (0.23”)
  • Form factor Wall Bracket Mount
  • Height 1.44 in
  • Hysteresis ± 1% RH
  • Input Type External
  • Length 3.56 in
  • Logging Modes Fixed interval
  • Materials 316 Stainless Steel, Stainless Steel
  • Measurement Type Relative Humidity, Temperature
  • Non-Linearity ± 3%
  • Number of Measurements 2
  • Number of Relays 2
  • Operating Temperature, Max 60 °C
  • Operating Temperature, Min 0 °C
  • Relative Humidity Accuracy ± 2.75% RH
  • Relay Output 1.5 A @ 30 Vdc
  • Repeatability ± 0.1%
  • Response Time Temperature: 5 to 30 sec, RH: 8 sec
  • RH Measurement Range 0 to 100% RH
  • RH Resolution 0.1%, 12 bit
  • Samples,Max 85k Samples, Interval 1 sec
  • Series ID ITHX-SD-Series
  • Software Compatible with Windows operating systems, Firmware upgrade from Ethernet OPC Server, iConnect: Configuration software for the Ethernet interface, iLog: Macro for automatic data logging in MS Exce
  • Storage Temperature, Max 85 °C
  • Storage Temperature, Min -40 °C
  • Supply Current 0.5 A
  • Supply Power Note AC Power Adapter (included) , Nominal Output: 9 Vdc @ 0.5 A , Input: 100 to 240 Vac, 50/60Hz, Back-up Battery: 9 Vdc, alkaline
  • Supply Power Type DC/Battery
  • Supply Voltage 9 to 12 Vdc
  • Temperature Accuracy ± 0.5 °C
  • Temperature Repeatability ± 0.1 °C
  • Temperature Resolution 0.1 °C, 14 bit
  • Weight 0.86 lb
  • Width 2.93 in

Supported Applications

The Omega iTHX-SD Series (iServer MicroServer) functions as a network-enabled temperature and humidity virtual chart recorder. Designed for industrial environments, the unit monitors and records temperature, relative humidity, and dew point over an Ethernet network or the Internet using standard web browsers without special software installation.

Operating Conditions & Performance

The iServer unit operates within an ambient temperature range of 0 to 60°C (32 to 140°F). Storage conditions are rated from -40 to 85°C (-40 to 185°F). The device includes a back-up battery allowing data logging for up to 2 days without external AC power.

Performance specifications vary by sensor type and range:

  • Relative Humidity Accuracy (at 25°C, non-condensing): ±2.75% from 10 to 90%; ±3% from 5 to 10% and 90 to 95%; ±4% from 0 to 5% and 95 to 100%. Non-linearity is ±3%, hysteresis is ±1% RH, and repeatability is ±0.1%.
  • Temperature Accuracy (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 60°C (32 to 41°F and 113 to 140°F).
  • Temperature Accuracy (Industrial Probe): ±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).
  • Response Time: RH is 8 seconds, tau 63%; Temperature ranges from 5 to 30 seconds, tau 63%.

Data resolution is 0.1%, 12-bit for humidity and 0.1°C, 14-bit for temperature. The included 2GB SD flash memory card supports up to 8 months of data storage at 1-second recording intervals or 7 years at 10-second intervals.

Configuration Options

The series offers configurable probe options and connectivity features tailored to specific installation needs:

  • Sensor Probes: Available configurations include a standard wand probe (iTHP-W-6) or industrial probes with 316 SS housing in lengths of 51 mm (2") or 137 mm (5"). Dual-probe options allow simultaneous monitoring via a DB9 "Y" connector adaptor.
  • Connectivity: Features an Ethernet port (RJ45) supporting fixed or auto-negotiating 10/100BASE-T with Auto MDI/MDIX. Supported protocols include TCP, UDP, SNMP, SMTP, NTP, ARP, ICMP, DHCP, DNS, HTTP, and Telnet.
  • Outputs & Alarms: Two relay outputs (1.5 A @ 30 Vdc) are programmable for temperature or humidity high/low set points with optional latching requiring manual reset. The unit serves active web pages with real-time readings and JAVA applet charts.
  • Power & Environment: Input is 9 to 12 Vdc via a safety-qualified AC adapter (nominal output 9 Vdc @ 0.5 A, input 100 to 240 Vac). Probe cable operating temperatures range from 0 to 80°C for wand probes and -40 to 125°C (-40 to 257°F) for industrial probes.
  • Accessories: Options include porous polyethylene probe caps (for wet environments), porous stainless steel probe caps with 5 um porosity (for dusty, pressurized <35 psi environments), extension cables up to 40', and NIST traceable calibration certificates or kits.

Key Product Differences

The series is distinguished by the included probe configuration:

  • iTHX-SD: Includes a standard wand probe (203 mm / 8") with a 152 mm (6") cable and DB9 connector.
  • iTHX-SD-2: Includes an industrial probe, 51 mm (2"), with a 0.9 m (3') cable and DB9 connector.
  • iTHX-SD-5: Includes an industrial probe, 137 mm (5"), with a 3 m (10') cable and DB9 connector.
  • Dual-Probe Models (-WD, -2D, -5D): Include two probes configured for simultaneous measurement. The iTHX-SD-WD includes two wand probes; the iTHX-SD-2D combines a wand probe with a 51 mm industrial probe; the iTHX-SD-5D combines a wand probe with a 137 mm industrial probe.
Rated 5 out of 5 by from Great Features We have incorporated this device in a Environmental Monitoring Unit for an Antenna Radome to provide us with historical data on the Environmental conditions within the Radome. We have storage data from one system for over 3 years recorded which allows feedback to the OEM of the Antenna and Radome.
Date published: 2017-01-31
Rated 1 out of 5 by from Device Does Not Connect and Bad Service Ordered this device for alarms but it has difficulty connecting to network and randomly decides not to connect when hardwired to the computer for configuration. Omega has terrible customer service. Even with the warranty they did not help me fix my problem (took a year of me emailing and calling them before they responded). They sent me back the device saying there was no problem. It still does not work.
Date published: 2020-10-08
Rated 1 out of 5 by from Solid devices with absolutely mediocre management These devices run on ancient software, and forget their configured settings every time they lose power. They use 9V batteries for backup, which is not ideal because they can't be charged by the main power source, so if you need to deploy a bunch of these, it will be impossible to keep track of constantly replacing the batteries. The server product is difficult to find information on, and is also garbage with extremely limited features and functionality. They do not support WiFi or PoE for easy deployment options. The only pro to these is that they are accurate, and the device itself is very durable. Everything else stinkss though...look elsewhere.
Date published: 2021-01-11
Rated 5 out of 5 by from Works as expected Been installed in a proper machine shop with oil vapor and the likes. Sensor element is trash in my opinion (5% change over 2 years) but designed to be replaced yearly if maintaining certification is your requirement. The iTHX device, although showing it's age, still trucks along just fine. Gathering data is easy and there is no software crippling (why I stay with Omega, it does what it says it does today and 10 years from now). Their documentation allows for anything from a highly engineered system's dev team to a script writer to easily integrate this sensor. Exactly what was advertised, and has never had issues. Also, the last two sensors were of a higher caliber than previously. It's nice to be able to call someone at this price point as well.
Date published: 2016-09-27
Rated 5 out of 5 by from Excellent product Purchased for one of my customers and they love these. Easy to use.
Date published: 2023-02-20
Rated 4 out of 5 by from Our experience with the Chart Recorder These are nice for laboratory environmental monitoring/logging but somewhat cumbersome to set up and retrieve data from. I could not download data via the Ethernet port to my pc but was able to do so via the SD card. Problem with that was that recording start date and time has to be set each time Standby is pressed and the SD card is taken out then put back in. Overall a decent instrument.
Date published: 2021-10-27
Rated 5 out of 5 by from Always performs to my expectations I have been using these for years now and they keep on working.
Date published: 2018-02-15
Rated 5 out of 5 by from Great service and products. I bought this item and when I received it we found that it had a cracked probe. I called Omega and talked to an engineer about this and he immediately sent out a replacement with hardly no questions asked. It was also sent overnight at no charge to me. GREAT service and products.
Date published: 2017-06-01
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Previous Omega Model DPiTH Serial RS-232 let us read Humidity through *X01 and Temperature through *X02 queries. Does Telnet interface on ITHX-SD-5 model support same queries or equivalent to read Temp and/or Hum directly through SCPI queries?

Asked by: svaleal
Thank you for your question. The command queries for the ITHX device are different. Please refer to section 4.91 of manual you can download from our website. https://www.omega.com/en-us/iiot-wireless/ithx-sd-series/p/ITHX-SD
Answered by: TREX
Date published: 2020-06-26

My unit appears to be functioning normally--it displays temp &amp; humidity &amp; I can access these readings over internet. Recording is &quot;ON&quot;. The &quot;R&quot; on the displayed &quot;%RH&quot; is flashing. What does that mean?

Asked by: Calguy
That mean recording is in progress.
Answered by: J B E
Date published: 2023-07-07

I would like to know the administrator password for a device THX-SD 18240420

Asked by: Truoc
admin=00000000 user=12345678
Answered by: rlock
Date published: 2021-03-25

In Server Command mode, Telnet connection closes by itself after few minutes of inactivity first time it gets a new command. Is there a way to keep Telnet connection alive for hours, even if no new command is sent through that connection?

Asked by: svaleal
Thank you for your question. Please send your question to Das Engr -DAS@OMEGA.COM for review and they will get back to you.
Answered by: Cheetah
Date published: 2020-06-29

When on a yearly calibration cycle, the unit is found to be out of tolerance when sent out for certification, can adjustments be made to bring it into tolerance, or is it &ldquo;not adjustable&rdquo; like most Temp/RH recorders.

Asked by: Roman
It is not adjustable
Answered by: JA Engineer
Date published: 2023-01-17

The iTHX-D3 used a separate End Character for Temp, Hum and Dew Point. We knew which one was being transmitted to the PLC based on that end character. Now the D3 has been replaced by the SD and it does not allow us to do this. What options do we have now?

Asked by: MikeS
The SD version does not have the option for the end character that is correct. However management has reinstated the D3 unit so you can contact customer service and return the SD model and order a D3 to fit your needs.
Answered by: cwengineer3
Date published: 2019-08-24

So, we have been using these devices without fail in multiple locations. As of today (08FEB20), whenever we log into the web app, and attempt to do a download of data at the 1 month block it says Failed - No File.

Asked by: MarkGPI
Please e-mail the software you are using and version to DAS@OMEGA.com and we will try to resolve with Engineering.
Answered by: PVDAS
Date published: 2020-02-12

After disabling probe 2 I am getting HT Probe 1 Error. Is the sensor defective?

Asked by: Jyotirmoy
Hello, thank you for your question. If you already saved the configuration for 1 sensor only, then something as a lose connection could be the reason for this message. Please make sure the sensor is fully inserted into the socket. If this is not the case, please contact our Data Acquisition experts for further troubleshooting. The email is das@omega.com or you can give us a call and ask for DAS technical support.
Answered by: DA Engineer
Date published: 2020-10-12
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