VOLTCRAFT 309 Bedienungsanleitung Seite 18

A measuring under unfavourable ambient conditions is inadmissible. Unfavourable
ambient conditions are:
- Dampness or too high air humidity,
- dust and combustible gases, fumes or solvents,
- thunderstorms and thunderstorm conditions like strong electrostatic fields, etc.
Any use other than the one described above damages the measuring instrument.
Moreover, this involves dangers, such as e.g. short-circuit, fire, electric shock, etc.
No part of the product may be modified or rebuilt. Always observe the safety instruc-
tions.
Controls
Illustration (fold-out page)
1. Measuring input "+" and "-", channel T1, for a K type temperature sensor
2. Measuring input for channel T2, for a K type temperature sensor
3. Measuring input for channel T3, for a K type temperature sensor
4. Measuring input for channel T4, for a K type temperature sensor
5. Multifunctional display with 4 x 3-digit sub displays (smaller displays) and dis-
play of the functions and measuring units
6. On / Off button, serves in second function in connection with the "T1 - T2" but-
ton as key for the setup "Set"
7. T1 - (minus) T2 button
8. "HOLD" button serves to hold a measuring value (in case of quickly changing
measuring signals), serves in second function as "Clock" button to indicate the
set time
9. "MAX MIN" button serves to record the minimum value, maximum value and
average value, serves in second function as INTV button
10. Record button "REC", serves in second function to change the settings in
upward direction (increase)
11. Change button serves to change the measuring unit from "°C" to "°F" and vice
versa, serves in second function to change the settings in downward direction
(decrease)
12. Trimmer for the offset calibration
13. Serial RS-232 interface (3,5 mm stereo jack bush)
14. Supply jack for the connection of a suitable network adapter "-" inside
15. Threaded tripod bush
16. Cover for the battery chamber lying underneath it
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Measuring tolerances
Indication of the accuracy in ±(% of the reading + indication error in Kelvin "K") "K"
for Kelvin stands as absolute value of a temperature difference or deviation.
Accuracy for 1 year at a temperature of +23° C ±5K, at a relative air humidity lower
than 80 %, not condensing. The warm up time is 1 minute
Measuring range of the
measuring instrument:
From -200° C to +200° C
From +200° C to +400° C
From +400° C to +1370° C
From -328° F to -200° F
From -200° F to +200° F
From +200° F to +2498° F
Temperature sensor TP- K01
From -50° C to +200° C± 2,2K or ±0,75%
From -58° F to 392° F ±3,6K or ±0,75%
Exceeding the max. admissible input quantity may damage under
unfavourable conditions the measuring instrument and may be
hazardous to the user's life.
Accuracy Resolution
±( 0,2%+ 1K) 0,1° C
±( 0,5%+ 1K) 1° C
±( 0,2%+ 1K) 1° C
±( 0,5%+ 2° F) 0,1° F
±( 0,2%+ 2° F) 0,1° F
±( 0,3%+ 2° F) 1° F
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