West Control Solutions Pro-EC44 - Manual (Page 253)

Pro-EC44 2-Loop Graphical Profile Controller & Recorder
Pro-EC44 Product Manual - 59540-1 October 2013 Page 246
Thermocouple Performance
Calibration: Complies with BS4937, NBS125 and IEC584.
Measurement
Accuracy: 
0.1% of full selected input range

1LSD (Least significant display digit).
NOTE: Reduced performance for B Thermocouple from +100 to 600°C.
NOTE: PtRh 20% vs PtRh 40% Thermocouple accuracy is 0.25% and
has reduced performance below 800°C.
Linearization
Accuracy: Linearization better than better

0.2°C (

0.05 typical) for J, K, L, N and
T thermocouples; than better than

0.5°C for other types.
Cold Junction: If enabled, CJC error is better than

1

C under operating conditions.
Sensor Resistance
Influence: Thermocouple 100Ω: <0.1% of span error.
Thermocouple 1000Ω: <0.5% of span error.
Sensor Break
Protection: Break detected within two seconds. Process Control outputs go to the
pre-set power value. High and Senor Break Alarms operate.
Resistance Temperature Detector (RTD) Input
RTD Types & Ranges
Sensor
Type Range in

C Range in

F Sensor
Type
Range in

C Range in

F
3-Wire
PT100 -199 to 800°C -328 to 1472°F NI120 -80 to 240°C -112 to 464°F
Note: The Scaled Input Upper Limit and Scaled Input Lower Limit parameters,
can be used to restrict range. An optional decimal place can be displayed.
RTD Performance
Measurement
Accuracy: 
0.1% of full selected input range

1LSD (Least significant display digit).
Linearization
Accuracy: Better than

0.2°C any point (

0.05°C typical).
PT100 Input complies with BS1904 and DIN43760 (0.00385 Ω/Ω/°C). 
Sensor Resistance
Influence: Pt100 50Ω/lead balanced.
Automatic Lead Compensation: <0.5% of span error.
RTD Sensor Current: 150μA ±10%.
Sensor Break
Protection: Break detected within two seconds. Process Control outputs go to the
pre-set power value. High and Senor Break Alarms operate.
DC Linear Input
DC Linear Types & Ranges
Input
Type Ranges Input
Type
Ranges
mA DC 0 to 20mA 4 to 20mA V DC 0 to 5V 1 to 5V
mV DC 0 to 50mV 10 to 50mV 0 to 10V 2 to 10V
Potentiometer ≥100Ω