USB RH/TEMPERATURE DATA LOGGER USER’S MANUAL HT10 Please read this manual carefully and thoroughly before using this product.
TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 4 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 5 Safety Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 What’s in the Blister Pack. . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Product Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Setup Instructions . . . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION Thank you for purchasing General Tools & Instruments’ HT10 USB RH/Temperature Data Logger. Please read this user’s manual carefully and thoroughly before using the instrument. The HT10 is a low-cost, compact, battery-powered thermohygrometer capable of unattended logging (recording) of the ambient temperature and relative humidity (RH) of an environment for days, weeks or months.
Applications for the HT10 include: • Water damage restoration—Because the HT10 is designed to be deployed and left in place over the duration of the job, it is always in equilibrium with the environment. • Process control—The HT10 enables, simplifies and cuts the cost of environmental monitoring of office buildings, greenhouses, food and equipment storage facilities, wineries, freezers, shipping containers, HVAC/R installations, computer rooms, labs, libraries, museums and saunas.
• One-click exporting of logs to Excel or Word • Long battery life (up to one year) • Includes USB extension cable • One-year warranty SAFETY INSTRUCTION Do not use the HT10 in the presence of flammable or explosive gases.
PRODUCT OVERVIEW Fig. 1 shows the main components, controls, display and connectors of the HT10. Familiarize yourself with their names and functions before moving on to the Setup Instructions. E B A D C F A. Temperature and humidity sensor window B. Battery compartment (latch is on rear of unit) C. Two-color (green and red) LEDs (indicate device logging and configuration status and “memory full”) D. USB plug E. Protective cap F.
SETUP INSTRUCTIONS INSTALLING/REPLACING THE BATTERY LATCH The HT10 uses a 3.6VDC “1/2 AA” Lithium-ion battery. To open the battery compartment, use a paper clip or a screwdriver with a fine point to push in the silver flange showing through the small square hole in the rear of the unit (left photo above). Push back the cover (middle photo), remove the old battery (right photo) and insert a fresh battery in the correct orientation. Then replace the cover, pushing it forward until you feel and hear a click.
with LCDs). Copy the HT10 manual to your computer’s hard drive for permanent storage. The other file is a Windows Installer Package (.msi file) named “ELUSB V1.0”. Doubleclick its icon. 4. A window titled “Welcome to the ELUsb Setup Wizard” will appear. Click Next to continue. 5. Within the window that appears next, click the box next to “I accept the terms in the License Agreement”. Then click Next to continue. 6.
12. The next Device Driver Installation Wizard window will advise you that an HT10/20/50 driver from General Tools or Kecheng Laboratories was successfully installed and that your device is now “Ready to use.” Click Finish to continue. CONFIGURE THE UNIT Note that the software installation has added a icon to your desktop. To facilitate access to the program, right-click on the icon and pin it to both your Start button and the Quick Start area at the left of your taskbar.
Device HT10 is connected! Fig. 2. The three options made available by plugging the HT10 into a USB port Note: If you have already used your HT10 to log data and it is still in recording mode, plugging the unit in will cause the following window to appear. Click Yes to stop recording and import all data recorded to that point in time. Click No to continue to Setup without importing recorded data (meaning it will be lost). Click Cancel to go back and unplug the unit from the USB port.
You can now use the software to “configure” your HT10. Configuring the device means choosing four key parameters: • Sampling time—How often it makes and stores humidity and temperature measurements. • Temperature unit—degrees Fahrenheit or Celsius (°F or °C). • High and low temperature alarm setpoints • High and low humidity alarm setpoints To begin, click on “Set up the USB Data Logger” in the window shown in the figure above. Doing so will cause the following window to appear.
result in too much essentially identical data being stored in memory, potentially limiting its capacity to capture important events such as an unexpected excursion of temperature or humidity. Conversely, using the longest sampling time setting of 12 hours will likely cause important events to go undetected. If you are an experienced data logger, you already know how to choose the optimum sampling time for your application.
OPERATING INSTRUCTIONS DEPLOY THE UNIT The HT10 is particularly easy to deploy on a job site because the unit does not need to be plugged into a computer to be activated (ready to start logging data). Working together, the MODE button and the pair of two-color LEDs (Fig. 1, Callouts F and C) serve as the control and indicators needed to: 1) start and stop data logging and 2) verify and change the unit’s working status.
That is how you should stop data logging if you plan to initiate another logging session later without uploading logged data to your computer in the interim. If you allow logging to continue and you do not upload your data to your computer soon, you risk filling up the HT10’s memory. A simpler and safer way to stop data logging is to plug the HT10 into your computer’s USB port immediately after completing a logging session and then use the ELUSB software to stop logging.
Fig. 4. A typical initial plot of an imported data log There are several features shown in Fig. 4 worth noting: • To mark the position of every recorded data point on the curve, check the “Mark Points” box at the top of the sidebar at right. • To get a higher-resolution view of the data recorded during a specific period of time, scale up and down the curves by dragging the slider at the bottom of the window left and right.
• To open a previously saved data log, click the Open button. This function is also available as the “View previously saved data” option shown in Fig. 2. • To export a file to Excel for advanced trending and analysis, click the Export to Excel button. OTHER INDICATIONS As mentioned earlier, the MODE button and the pair of twocolor LEDs work together to indicate the current working status of the HT10.
SPECIFICATIONS Temperature Measurement Range -4° to 158°F (-20° to 70°C) Temperature Measurement Accuracy ±0.7°F (0.4°C) Temperature Measurement Resolution and Repeatability ±0.2°F (0.1°C) Relative Humidity (RH) Measurement Range 10 to 90% RH Measurement Accuracy ±3% RH Measurement Resolution and Repeatability ±0.1% Internal Storage Capacity 8,000 pairs of RH/Temp readings Temperature Response Time 0.5 seconds Humidity Response Time 5 seconds Interface USB 1.0/2.
MAINTENANCE TIPS • Avoid dropping the unit. Do not subject it to violent shock or vibration or expose it to strong electromagnetic fields (for example, near arc welders or induction heaters). • Keep the unit out of direct sunlight. • Do not use chemicals or abrasive cloth to clean the display window or housing. • Before storing the HT10 for an extended period of time (several months or more), remove the battery to avoid having it leak and damage the unit.
RETURN FOR REPAIR POLICY Every effort has been made to provide you with a reliable product of superior quality.
GENERAL TOOLS & INSTRUMENTS 80 White Street New York, NY 10013-3567 PHONE (212) 431-6100 FAX (212) 431-6499 TOLL FREE (800) 697-8665 e-mail: sales@generaltools.com www.generaltools.com HT10 User’s Manual Specifications subject to change without notice ©2012 GENERAL TOOLS & INSTRUMENTS NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS.
