Omega 27 Manuale Utente
Current
Sensor
Unit
Source
DMM
Step
Select
Output
Input
Adjust
Verify
Reading*
1
RTD-100
1562.0°F
1mA
P38
0.39026v
2
RTD-100
32.0°F
1mA
√
0.10000
±0.00006v
3
RTD-100
–328.0°F
1mA
√
0.01849
±0.00012v
4
1,000
Ω
900.00
Ω
1mA
√
0.90000
±0.00020v
5
1,000
Ω
1.00
Ω
1mA
√
0.00100
±0.00020v
6
100,000
Ω
90,000
Ω
10µA
P51
0.90000v
7
100,000
Ω
100
Ω
10µA
√
0.00100
±0.00020v
8
Thermistor
293.0°F
1mA
√
0.04700
±0.00020v
9
Thermistor
77.0°F
10µA
√
0.02252
±0.00020v
10
Thermistor
–40.0°F
10µA
√
0.75790
±0.00500v
Table 6: Calibration of Calibrator-Mode Resistance Functions
(RTD-Thermistor)
* exclusive of noise.
2. CALIBRATION VERIFICATION
Calibration is verified with the same instrument hookups as used for calibra-
tion (ie. Figures 12 and 13 for thermocouple functions, Figure 14 for resis-
tance functions).
tion (ie. Figures 12 and 13 for thermocouple functions, Figure 14 for resis-
tance functions).
While one hookup serves to verify all resistance functions (RTD, thermistor,
ohms), a full check-out of thermocouple functions requires a set of calibration
cables for each thermocouple type.
ohms), a full check-out of thermocouple functions requires a set of calibration
cables for each thermocouple type.
To simplify the verification of thermocouple calibration, software has been
enhanced to reactivate the copper-mode used during calibration. This feature
is available on products that use the following (and later) software revisions:
enhanced to reactivate the copper-mode used during calibration. This feature
is available on products that use the following (and later) software revisions:
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