Operating Instructions - York Survey Supply Centre
Contents
1. Prospect House George Cayley Drive Clifton Moor York England YO30 4XE Tel 44 0 1904 692723 Fax 44 0 1904 690385 E Mail sales yorksurvey co uk www YorkSurvey co u Ref operat98 instructions 07 33066 qxd 11 05 07 Handheld Digital Thermo Hygrometer Operating Instructions York Survey Supply Centre 2007 Hand Held Digital Thermo Hygrometer Commissioning Remove the protective film from the film keyboard Open the battery compartment on the rear of the instrument and if present remove the battery circuit breaker strip The instrument switches itself on and is immediately ready for operation after inserting the batteries Button ON OFF The measuring instrument can be switched on and off with this button Button C F This button is provided for switching over the display between C and F The currently active temperature units are retained even after switch off Button MAX MIN When the MAX MIN button is pressed for the first time the maximum temperature and humidity values encountered since the most recent switch on of the instrument appear in_the display The corresponding minimum temperature and humidity values are displayed when this buttons pressed again On the third press of this button the instrument returns fo normal display of current temperature values Button Td Tw When this button is pressed Tw is diSplayed along with the correct wet bulb temperature Tw disp2. lays the wet bulb thermometer value and Td displays the dew point value Button CLEAR To clear the stored minim m and maximum values press the CLEAR button Battery Replacement Replace the batteries when the instrument displays meaningless values on pressing the buttons Ref operat98 instructions 07 33066 qxd 11 05 07 Technical Data Temperature Measuring Measuring Range Resolution Accuracy Sensor Humidity Measuring Measuring Range Resolution Accuracy Sensor Permissible Operating Temperature Range Operating Voltage Battery Life Case Dimensions Weight 15 C to 49 9 C 0 1 C through the measuring range 1 C NTC 25 rH to 95 rH 1 rH 5 over full range res Sensor 0 C to 40 C 2 size AA cells 1 5V each 53088 approx 1year depending on total time in switched on state and illumination approx 130 x 70 x 25mm L x W x H approx 130g York Survey Supply Centre 2007
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