User manual

32
Maintenance and calibration
In order to ensure the accurcy of the thermometer for a longer period of time you
should calibrate it once a year.
The replacement of the battery is described in the chapter "Handling, putting-into-
operation A". Clean the device and the window of the display with a clean, lint-free,
antistatic and dry cleaning cloth.
Do not use cleaning agents that contain carbon or benzines, alco-
hol or anything similar to clean the product since these sub-
stances damage the surface of the measuring instrument. Moreo-
ver, these fumes are hazardous to the health and explosive. Do
not use tools with sharp edges, screwdrivers, metal brushes or
anything similar to clean the device.
Technical specifications and measuring
tolerances
Technical specifications
Display :4 x four-figure displays up to max. 9999,
symbol displays and measuring units
Max. measuring rate :1,25 measurements per second, that are
5 measurements in 4 s
Working temperature
(surroundings of the
measuring instrument) : from 0° C to +50° C (from 32° F to 122° F)
Storage temperature :from -10° C to +60° C (from 14° F to
140° F, battery removed)
Relative air humidity : from 0 to 80 %, not condensing
Temperature for guaranteed accuracy : from +23° C ±5 K
Temperature coefficient :further 0,01% of the reading +0,03° C (or
0,01% of the reading +0,06° F) per K in a
range reaching from 0° C to 18° C and
from 28° C to 50° C
Battery replacement indication :" " from below approx. 7,3 V battery
voltage
Battery type : NEDA 1604 9V or 6F22 9V (alkaline)
Weight : 250 g (with battery)
Dimensions (L X W X H) : 184 x 64 x 30 mm (without lines)
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