User manual

GMC-I Gossen-Metrawatt GmbH 27
Internal clock
Time format DD.MM.YYYY hh:mm:ss
Resolution 0.1 s
Accuracy ±1 minute per month
Temperature Influence 50 ppm / K
Reference Conditions
Ambient temperature +23 °C ±2K
Relative humidity 40 ... 75%
Battery voltage 3.0 V ±0.1 V
Thermocouple Simulation Error [°C]
Thermocouple error is specified in the technical data as
thermovoltage error: ΔU. ΔT error is dependent upon
characteristic thermocouple slope.
In consideration of characteristic thermocouple non-linearity,
which also applies to slope (1
st
dT/dU derivation) mathematically
calculated ΔT error is shown in the following table for all
thermocouple types in the 100 °C sub-range. The values shown
in the table represent maximum possible error for the respective
sub-range.
All specified error values are increased by 2 K if an internal
reference temperature is used.
In the event of an external reference temperature of other than
0° C, the table sub-ranges are adjusted by the amount of the
reference temperature.
Example
External reference temperature = 50 °C,
sub-range 100 … 200 °C becomes 150 … 250 °C
For display in °F: numeric values in °F are increased by a factor of
1.8. The °F sub-ranges are calculated as follows: °F = 32 + °C x 1.8.
Additional Error for Thermocouple Simulation
Thermocouple
Type
T Error in K for Thermocouple Types (ref. temp. 0° C)
Sub-Range: °CJLTUKESRBN
– 200 ... –100
1.17 0.83 1.52 1.2 1.59 1.03 2.38
– 100 ... 0
0.55 0.56 0.78 0.77 0.73 0.51
≥ -50 °
4.79
≥ -50 °
5.29
1.03
0 ... 100
0.42 0.41 0.52 0.51 0.53 0.35 3.77 3.92 0.77
100 ... 200
0.46 0.45 0.47 0.49 0.6 0.36 2.78 2.75 0.73
200 ... 300
0.51 0.51 0.47 0.46 0.63 0.39 2.47 2.36 0.7
300 ... 400
0.56 0.56 0.49 0.49 0.67 0.43 2.31 2.19 0.71
400 ... 500
0.6 0.6 0.51 0.71 0.48 2.28 2.09 0.74
500 ... 600
0.63 0.62 0.76 0.53 2.24 2.06 4.12 0.78
600 ... 700
0.64 0.63 0.82 0.58 2.23 2.02 3.54 0.82
700 ... 800
0.66 0.64 0.89 0.64 2.21 1.99 3.12 0.87
800 ... 900
0.73 0.66 0.96 0.71 2.18 1.95 2.84 0.93
900 ... 1000
0.83 1.04 0.77 2.16 1.93 2.62 0.99
1000 ... 1100
0.9 1.12 2.16 1.91 2.46 1.05
1100 ... 1200
0.96 1.22 2.17 1.92 2.34 1.13
1200 ... 1300
1.32 2.2 1.94 2.27 1.21
1300 ... 1400
≤
1370°:
1.39
2.24 1.99 2.22
1400 ... 1500
2.31 2.04 2.19
1500 ... 1600
2.39 2.12 2.2
1600 ... 1700
2.52 2.23 2.24
1700 ... 1800
≤
1760°:
2.76
≤
1760°:
2.42
2.33