28 II Ex
Calibration Information
6
Detailed Specifications
For all detailed specifications:
Accuracy is specified for 2 years after calibration, at operating temperatures of 18
°
C to 28
°
C, with relative humidity at
0 % to 80 %. Accuracy specifications take the form of
±
([% of Reading] + [Number of least-significant digits]). In the 4
½-digit mode, multiply the number of least-significant digits (counts) by 10.
AC Voltage
AC conversions are ac-coupled and valid from 3 % to 100 % of range.
Range Resolution
Accuracy
45 – 65 Hz
30 – 200 Hz
200 – 440 Hz 440 Hz – 1 kHz
1 – 5 kHz
5 – 20 kHz
600.0 mV 0.1 mV
±
(0.7 % + 4)
±
(1.0 % + 4)
±
(2 % + 4)
±
(2 % + 20)
[1]
6.000 V
0.001 V
60.00 V
0.01 V
±
(0.7 % + 2)
±
(2 % + 4)
[2]
Unspecified
600.0 V
0.1 V
Unspecified
1000 V
1 V
Unspecified Unspecified
Low-Pass Filter
±
(1.0 % + 4)
[1]
+1.0 % + 4
-6.0 % - 4
[3]
Unspecified Unspecified Unspecified
[1] Below 10 % of range, add 12 counts.
[2] Frequency range: 1 kHz to 2.5 kHz
[3] Specification increases from -1 % to -6 % at 440 Hz when filter is used.
DC Voltage, Conductance, and Resistance
Function Range
Resolution
Accuracy
mV dc
600.0 mV
0.1 mV
±
(0.1 % + 1)
V dc
6.000 V
0.001 V
±
(0.05 % + 1)
60.00 V
0.01 V
600.0 V
0.1 V
1000 V
1 V
Ω
600.0
Ω
0.1
Ω
±
(0.2 % + 2)
[2]
6.000 k
Ω
0.001
k
Ω
±
(0.2 % + 1)
60.00 k
Ω
0.01
k
Ω
600.0 k
Ω
0.1
k
Ω
±
(0.6 % + 1)
6.000 M
Ω
0.001
M
Ω
50.00 M
Ω
0.01
M
Ω
±
(1.0 % + 3)
[1,3]
nS
60.00 nS
0.01 nS
±
(1.0 % + 10)
[1,2,3]
[1] Add 0.5 % of reading when measuring above 30 M
Ω
in the 50 M
Ω
range, and 20 counts below 33 nS in the 60 nS range.
[2] When using the rel function to compensate for offsets.
[3] >40
°
C temperature coefficient is 0.1 x (specified accuracy)/
°
C.
Temperature
Range Resolution
Accuracy
[1,2]
-200
°
C to +1090
°
C
-328
°
F to +1994
°
F
0.1
°
C
0.1
°
F
±
(1.0 % + 10)
±
(1.0 % + 18)
[1] Does not include error of the thermocouple probe.
[2] Accuracy specification assumes ambient temperature stable to
±
1
°
C. For ambient temperature changes of
±
5
°
C, rated accuracy
applies after 2 hours.