Maintenance And Calibration; Safety Instructions - VOLTCRAFT 309 Bedienungsanleitung

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
Max. measuring rate
Working temperature
(surroundings of the
measuring instrument)
Storage temperature
Relative air humidity
Temperature for guaranteed accuracy
Temperature coefficient
Battery replacement indication
Battery type
Weight
Dimensions (L X W X H)
32
: 4 x four-figure displays up to max. 9999,
symbol displays and measuring units
: 1,25 measurements per second, that are
5 measurements in 4 s
: from 0° C to +50° C (from 32° F to 122° F)
: from -10° C to +60° C (from 14° F to
140° F, battery removed)
: from 0 to 80 %, not condensing
: from +23° C ±5 K
: 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
: " + - " from below approx. 7,3 V battery
voltage
: NEDA 1604 9V or 6F22 9V (alkaline)
: 250 g (with battery)
: 184 x 64 x 30 mm (without lines)
Table of contentsx
Introduction ..............................................................................................................19
Prescribed use ..........................................................................................................19
Controls (fold-out page) ............................................................................................20
Table of contents ......................................................................................................21

Safety instructions ....................................................................................................21

Presentation .............................................................................................................23
Handling, putting-into-operation ..............................................................................23
Connection of the PC, installation of the software ..................................................27
Carrying out measurements......................................................................................28
Disposal ....................................................................................................................31
Correcting malfunctions............................................................................................31
Maintenance..............................................................................................................32
Technical specifications, measuring tolerances .......................................................32
Safety instructions
We do not assume liability for damages to property or personal
injury which are caused due to improper use or due to failure to
observe these operating and safety instructions. In such cases
the guarantee will expire.
- The digital thermometer 309 left the works in technically reliable condition. In order
to preserve this condition and to ensure safe operation, we kindly request the user
to observe the safety instructions and the warning notes (" Warning!" and "Note!")
of these operating instructions. The following symbols need to be observed:
= Read the operating instructions
- Keep measuring instruments and accessories out of reach of children. They are
nothing to play with.
- In commercial and industrial facilities the regulations for the prevention of acci-
dents as laid down by the professional trade association for electrical equipment
and devices need to be observed.
- In schools, training facilities, do-it-yourself and hobby workshops the measuring
instruments are to be used under the responsible supervision of trained personnel.
21