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DC Outputs - Accuracy
Output 1:
±0.5% (mA @ 250
W,V@2kW); 2%
underdrive (4 - 20mA) and overdrive
applies.
Output 2:
±0.5% (mA @ 250
W,V@2kW); 2%
underdrive (4 - 20mA) and overdrive
applies.
Output 3 (Recorder
Output):
±0.25% (mA @ 250
W,V@2kW); Degrades
linearly to ±0.5% for increasing burden (to
specification limits).
Operating Conditions
Ambient Temperature
(Operating):
0°Cto55°C
Ambient Temperature
(Storage):
–20°Cto80°C
Relative Humidity: 20% - 95% non-condensing
Supply Voltage: 90 - 264V AC 50/60Hz (standard)
20 - 50V AC 50/60Hz or 22 - 65V DC
(option)
Source Resistance: 1000
W maximum (thermocouple)
Lead Resistance: 50
W per lead maximum balanced (Pt100)
Performance Under Operating Conditions
Temperature Stability:
0.01% of span/°C change in ambient
temperature.
Cold Junction
Compensation
(thermocouple Only):
Better than ±1°C.
Supply Voltage Influence: Negligible.
Relative Humidity
Influence:
Negligible
Sensor Resistance
Influence:
Thermocouple 100
W: <0.1% of span error
Thermocouple 1000
W: <0.5% of span error
RTD Pt100 50
W/lead: <0.5% of span error
S077-A Volume II A-10