± (1.5% of m.v. + 5 digits)
Temperature with
adapter
(testo 770-2)
8
-20 to 0 °C: +/- 2 °C
0 °C to 100 °C: +/- 1 °C
100 °C to 250 °C:
+/-1.5 %
>250 °C: +/-2 %
Figures correspond to +23 °C ± 5 °C at <80% rel. humidity. Temperature coecient:
0.15 x specied accuracy per 1 °C (<18 °C and >28 °C)
9.2.2 testo 770-3 (0590 7703)
± (0.8 % of m.v. + 3 digits)
± (1.0 % of m.v. + 3 digits)
DC current
- jaws [A]
- jack [μA]
± (2.0 % of m.v. + 5 digits)
± (1.5 % of m.v. + 5 digits)
AC current
11
- jaws [A]
13
- jack [μA]
10,12
± (2.0 % of m.v. + 5 digits)
± (1.5 % of m.v. + 5 digits)
Maximum measurement duraon is 15 s
Does not include the measurement error of the temperature probe. The specied accuracy is
the sum total of the measurement errors of the thermocouple adapter and the testo 770.
The lower measuring ranges are only specied from 5% (does not apply to DC current / AC
current measurements with the current probe)
Signal bandwidth 40 Hz to 1 kHz
In the case of a mixed signal (AC + DC), only the purely AC component is taken into account
As the frequency increases (over 400 Hz), the accuracy deteriorates
+/- (2.5% of m.v. + 3 digits) for 400Hz to 750Hz / +/- (5.0% of m.v. + 3digits) for 750Hz to 1000Hz
Frequency of AC currents up to 400 Hz