84 Chromalox 2104 Technical Manual
Input Specifications Range °F Range °C Accuracy @ 77°F ambient
J T/C -100 to 1400 -73 to 760 ± 0.2% of sensor span
K T/C -300 to 2400 -184 to 1316 ± 0.2% of sensor span
T T/C -350 to 750 -212 to 399 ± 0.2% of sensor span for
PV > -80°C
± 0.4% of sensor span for
PV < -80°C
E T/C -100 to 1100 -73 to 593 ± 0.2% of sensor span
R T/C 0 to 3200 -18 to 1760 ± 0.4% of sensor span
S T/C 0 to 3200 -18 to 1760 ± 0.4% of sensor span
B T/C 50 to 3300 10 to 1816 ± 0.4% of sensor span for
PV > 538°C
100Ω Pt RTD (α = .00385) -200 to 1000 -128 to 538 ± 0.2% of sensor span
RTDT (0.1° res.) -99.9 to 899.9 -73.3 to 432.1 ± 0.2% of sensor span
4-20mA -500 to 5000 (programmable) ± 0.2% of sensor span
0-5 Vdc -500 to 5000 (programmable) ± 0.2% of sensor span
1-5 Vdc -500 to 5000 (programmable) ± 0.2% of sensor span
Transmitter Power
+24 Vdc Output +24 Vdc ±20% at 50mA maximum
Ramp/Soak Programming
Intervals 16 intervals
Loops 1 loop, 0-255 times or continuous
Event Outputs Up to 3
Guaranteed Soak
Differential Off, 1°F to sensor span
Time Units Seconds, Minutes, Hours (1 second to 99.99 hours/segment)
Readout Stability
J, K, E Thermocouple ±1°F/10°F change in ambient temperature
T Thermocouple ±2°F/10°F change in ambient temperature for sensor
temperature > -80°C
±5°F/10°F change in ambient temperature for sensor
temperature < -80°C
R, S, B Thermocouple ±2°F/10°F change in ambient temperature
RTD ±0.5°F/10°F change in ambient temperature
4-20mA, 1-5Vdc ±0.05% of span / 10°F change in ambient temperature
Open Sensor and Programmable control action with display indicating
Out-of-Range Conditions condition “OPEN SENS”
Remote Setpoint Input
Input Signal 4-20mA, 250Ω Input Impedance
1-5 Vdc, 110kΩ Input Impedance
Voltage or Current Field Selectable via switch
Range Programmable over selected Sensor Span
Accuracy ±0.3% of Sensor Span (initial accuracy) at 75°F ambient
temperature and rated line voltage. field calibrate to
±0.2% of Sensor Span
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