West Control Solutions 8700+ - Manual (Page 166)

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- DIN Controllers & Indicators - Product Manual
59305, Issue 7
– March 2014 Specifications Page 161
Thermocouple Performance
Calibration: Complies with BS4937, NBS125 and IEC584.
Measurement
Accuracy: 
0.1% of full range span

1LSD.
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.
Linearisation
Accuracy: Better than

0.2

C any point, for 0.1° resolution ranges (

0.05

C typical).
Better than

0.5

C any point, for 1° resolution ranges.

Cold Junction
Compensation: Better than

0.7

C under reference conditions.
Better than

1

C under operating conditions.
Temperature
Stability: 0.01% of span/

C change in ambient temperature.
Supply Voltage
Influence: Negligible.
Relative Humidity
Influence: Negligible.
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 turn OFF
(0% power); Valve Control “Close” outputs turn on; Limit outputs turn off
(goes into Exceed condition); Alarms operate as if the process variable is
over-range.
Resistance Temperature Detector (RTD)
RTD Ranges Available
Range Min
in

C
Range Max
in

C
Range Min
in

F
Range Max
in

F
Resolution
-128.8 537.7 -199.9 999.9 0.1°
-199 800 -328 1472 1° (default)
Note:
Scale Range Upper Limit and Scale Range Lower Limit Configuration Mode parameters
can be used to restrict range.