Dwyer THI-10 - Manual

Bulletin H-THI-10
The Model THI-10 Digital Thermohygrometer accurately measures
relative humidity and ambient temperature. Up to 99 readings can be
stored in non-volatile memory allowing the HVAC technician to record the
data after returning to the office. This compact thermohygrometer also
features user selectable engineering units, Maximum/Minimum functions,
dew point, and wet bulb temperature measurements. The Model THI-10
includes a soft carrying case with a belt loop for easy transportation.
OPERATING INSTRUCTIONS
Measurements
Press the “ ” button to turn the meter on.
Press and hold the HOLD button to toggle the humidity and temperature
displays.
Press the DEW/WET/%RH button to display the dew point. While
displaying dew point, press the DEW/WET/%RH button again to display
the wet bulb temperature.
Data Hold
Press the HOLD button to freeze the readings in both displays.
The “H” icon and the last readings will appear in the display.
The dew point and wet bulb temperature can be viewed while in Hold
mode.
In order to return to normal operation, press the HOLD button and the “H”
icon disappears from the display.
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
SPECIFICATIONS
Service: Humidity & temperature detection in air.
Range: Relative Humidity: 1 to 99% (non-condensing);
Temperature: -4 to 140°F (-20 to 60°C).
Accuracy: Relative Humidity: ±3%; Temperature: ±1.5°F (±0.8°C).
Display: Dual LCD Display (4 digit upper display / 3 digit lower display).
Temperature Limits: Ambient: 32 to 144°F (0 to 60°C).
Resolution: Relative Humidity: 0.1%; Temperature: 0.1°.
Power Requirements: 9V alkaline battery.
Battery Life: Approximately 200 hours.
Weight: 5.6 oz (160 g).
Agency Approvals: CE.
Specifications - Installation and Operating Instructions
Model THI-10 Digital Thermohygrometer
SECOND DISPLAY
MAIN DISPLAY
MEMORY
Storing data
Store measurement data by pressing the “MEM” button. The screen will
briefly display an “M” and the memory address number.
Retrieving Data
Press the READ button to cycle through the stored data.
Press and hold the READ button to exit memory and return the meter to
normal operation.
The meter’s internal memory can store up to 99 readings. When this limit
is reached, the screen will display “Full”. The memory must be cleared
before anymore readings can be stored.
Clearing the Memory
Turn the meter off.
Hold down the “MEM” button while powering on the meter.
“Clr” will appear on the screen when the stored data is erased.
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