9 Technical data
21
Feature
Measuring
range
1
Resolution Accuracy
512.0 nF
0.01 nF
± (1.5% of meas. val. +
5 digits)
5.120 µF
0.001 µF
± (1.5% of meas. val. +
5 digits)
51.20 µF
0.01 µF
± 10% typically
100.0 µF (15
s)
7
0.1 µF
± 10% typically
Temperature with
adapter (testo 770-
2)
8
-20 to 500 °C
0.2 °C
-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
coefficient: 0.15 x specified accuracy per 1 °C (<18 °C and >28 °C)
9.2.2.
testo 770-3
Feature
Measuring
range
9
Resolution Accuracy
DC voltage
600 mV
6.000 V
60.00 V
600.0 V
0.1 mV
1 mV
10 mV
100 mV
± (0.8% of meas. val. +
3 digits)
AC voltage
10
,
11
,
12
600
mV
6.000 V
60.00 V
600.0 V
0.1 mV
1 mV
10 mV
100 mV
± (1.0% of meas. val. +
3 digits)
DC current
- jaws [A]
- jack [
μ
A]
600 A
600
μ
A
0.1 A
1
μ
A
± (2.0% of meas. val. +
5 digits)
± (1.5% of meas. val. +
5 digits)
7
Maximum measurement duration is 15 s
8
Does not include the measurement error of the temperature probe. The
specified accuracy is the sum total of the measurement errors of the
thermocouple adapter and the testo 770.
9
The lower measuring ranges are only specified from 5% (does not apply
to DC current / AC current measurements with the current probe)
10
Signal bandwidth 40 Hz to 1 kHz
11
In the case of a mixed signal (AC + DC), only the purely AC component
is taken into account
12
As the frequency increases (over 400 Hz), the accuracy deteriorates
+/- (1.5% of m.v. + 3 digits) for 400Hz to 750Hz / +/- (2.0% of m.v. + 3digits)
for 750Hz to 1kHz
