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Summary of Contents for General HT50
- Page 1 RH/TEMPERATURE/GPP DATA LOGGER with LCD & IRT USER’S MANUAL HT50 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com Please read this manual carefully and thoroughly before using this product.
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Page 2: Table Of Contents
Return for Repair Policy ......22 INTRODUCTION Thank you for purchasing General Tools & Instruments’ HT50 USB RH/Temp/GPP Data Logger with LCD & IRT. Please read this user’s manual carefully and thoroughly before using the instrument. - Page 3 (IR) thermometer. In addition, the HT50 can also calculate and display absolute humidity levels in units of grains per pound (GPP) or g/kg. Also called mixing ratio, GPP is a more useful moisture metric than RH to water damage restorers.
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Page 4: Key Features
HVAC/R installations, computer rooms, labs, libraries, museums and saunas. • Electronics manufacturing—Alerts provided by the low- humidity alarm function of the HT50 can mitigate the risk of damaging high-voltage static discharges. KEY FEATURES • One button starts/stops data logging without a PC •... -
Page 5: Safety Instructions
U.S. law prohibits pointing a laser beam at aircraft; doing so is punishable by a fine of up to $10,000 and imprisonment. Do not use the HT50 in the presence of flammable or explosive gases. WHAT’S IN THE BLISTER PACK The HT50 comes in a blister pack that also contains •... -
Page 6: Product Overview
PRODUCT OVERVIEW Fig. 1a below shows the main components, controls and connectors of the HT50. Fig. 1b (on the facing page) shows all possible indications on the HT50’s display. Familiarize yourself with their names and functions before moving on to the Setup Instructions. - Page 7 Fig. 1b. All possible display indications on the HT50 Display Legend : indicates reading is higher than high alarm setpoint for that parameter : indicates reading is lower than low alarm setpoint for that parameter %RH: relative humidity unit °C: Celsius temperature unit °F: Fahrenheit temperature unit...
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Page 8: Setup Instructions
SETUP INSTRUCTIONS INSTALLING/REPLACING THE BATTERY The HT50 uses a 3.6VDC “1/2 AA” Lithium-ion battery. To open the battery compartment, turn the unit over and slide the battery compartment cover (which is clearly marked) toward the front of the unit, in the direction opposite the arrow on the cover. - Page 9 Click on “Install this driver software anyway” to continue. 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...
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Page 10: Configure The Unit
HT50 directly into the jack. You do not want the plug of the HT50 to support any of the weight of the laptop. If that is the case, plug the HT50 into the jack of the included USB extension cable and insert the plug of the extension cable into the computer’s USB jack. - Page 11 Fig. 2. The three options made available by plugging the HT50 into a USB port Note: If you have already used your HT50 to log data and it is still in recording mode, plugging the unit in will cause the following window to appear.
- Page 12 You can now use the software to “configure” your HT50. Configuring the device means choosing five 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 (ambient) temperature alarm setpoints •...
- Page 13 HT50’s internal clock with your computer’s clock, giving all data logs to be captured an absolute time reference. You can now unplug the HT50 from your computer’s USB port. The unit is in “standby” mode, ready to begin logging data.
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Page 14: Operating Instructions
OPERATING INSTRUCTIONS DEPLOY THE UNIT The HT50 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 SET and STO buttons and the LCD serve as the control and indicators needed to: 1) start and stop data logging and 2) verify and change the unit’s working status. -
Page 15: Stop Logging And Import Logs
ELUSB software to stop logging. Each time you plug the HT50 into the USB port, the window shown in Fig. 2 will appear. When you plug in the unit, it makes no difference whether it is still logging; the procedure for uploading (importing) data logs is identical. - Page 16 you may have entered during Setup. To remove any parameter or horizontal and vertical grid lines from the overall plot, uncheck its box at right. Fig. 4. A typical initial plot of an imported data log There are several features shown in Fig. 4 worth noting: •...
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Page 17: Using The Ir Thermometer
Export to Excel button. USING THE IR THERMOMETER The HT50 has an integral IR thermometer that can be used to spot-check the temperature of any surface from a distance. This function would, for example, enable an HVAC/R system installer to quickly check the temperature of air exiting a duct without having to use an anemometer-thermometer. -
Page 18: Other Indications
(3) the current absolute humidity level (mixing ratio in GPP or g/kg), and (4) the HT50’s current working status. Each press of the SET button changes the display to the next indication in the sequence; pressing the SET button when the LCD is displaying the unit’s current working status (4) resets the cycle to (1). -
Page 19: Specifications
The STO button has a third function, in addition to waking up the LCD and adding IRT readings to sets of temperature and humidity data logs. When the HT50’s LCD is on, brief presses of the STO button toggle displayed temperature readings between °C and °F, and displayed mixing ratio readings... - Page 20 IR (Surface) Temperature -4° to 482°F (-20° to 250°C) Measurement Range IR Temperature ±4°F (3°C) Measurement Accuracy IR Temperature ±0.2°F (0.1°C) Measurement Resolution Distance-to-Spot (D:S) Ratio Emissivity 0.95 (fixed) IRT Operation Temperature 32º to 104ºF (0º to 40ºC) @ 10 to 90% RH Internal Storage Capacity 16,300 pairs of ambient temp.
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Page 21: Maintenance Tips
• Do not use chemicals or abrasive cloth to clean the display window or housing. • Before storing the HT50 for an extended period of time (several months or more), remove the battery to avoid having it leak and damage the unit. -
Page 22: Return For Repair Policy
Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product. In no event shall General be liable for any incidental, special, consequential or punitive damages, or for any cost, attorneys’... - Page 23 NOTES ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________ ____________________________________________...
- Page 24 99 Washington Street Melrose, MA 02176 Phone 781-665-1400 Toll Free 1-800-517-8431 Visit us at www.TestEquipmentDepot.com Specifications subject to change without notice ©2016 GENERAL TOOLS & INSTRUMENTS NOTICE - WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS. MAN#HT50 08/31/16...
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