Specifications
Conformity Error <0.4 µV.
Cold-junction Compensation Error <0.004°C/°C.
Voltage Output Mode
Units mV and V.
METER MODE
Voltage Input −11 V dc to +11 V dc.
Input Impedance >10 MΩ nominal.
Pumpout Current <1 nA.
Protection Same as Source Mode.
Accuracy Same as Source Mode.
Resolution
Temperature Selectable settings of 0.1° and 1° (0.1 and 1 if the unit of
measure is kelvin).
Voltage Selectable settings of 0.1 µV, 1 µV, 10 µV, 100 µV, and
1 mV. (1 µV is the maximum setting at ±1 V and higher).
Temperature Coefficient Same as Source Mode.
Settling Time <10 s to rated accuracy.
SUPPORTED STANDARDS
Thermocouple Types
B, E, J, K, R, S, and T NIST Monograph 175 and Monograph 125.
N NIST Monograph 175 and Monograph 161.
C and D ASTM E230.
G and PLII ASTM E1751.
Temperature Scales ITS-90 and IPTS-68.
GENERAL INSTRUMENT SPECIFICATIONS
Ac Operation
Line Voltage 85 V ac to 250 V ac, 47 Hz to 63 Hz.
Line Current 140 mA ac rms when battery pack is fully charged and less
than 1 A when the battery pack is being recharged.
Dc Operation (for units with battery option installed)
Operation Time More than six hours when the battery pack is fully charged.
Recharge Time Less than three hours to fully recharge from a fully
discharged state.
CAUTION
The battery pack used in the Model 1140A must be
charged at least once every two months. If this is
not done, the battery-pack voltage may decay
beyond its ability to recover.
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