User guide

A.9 PERFORMANCE
Reference Conditions
Ambient Temperature:
20°C ±2°C
Relative Humidity: 60 - 70%
Supply Voltage: 90 - 264V AC 50Hz
Source Resistance: <10Ω for thermocouple input
Lead Resistance: <0.1Ω/lead balanced (Pt100)
Performance Under Reference Conditions
Common Mode Rejection: >120dB at 50/60Hz giving negligible effect
at up to 264V 50/60Hz.
Series Mode Rejection: >500% of span (at 50/60Hz) causes
negligible effect.
Thermocouple Inputs
Measurement Accuracy:
±0.05% typical, ±0.1% maximum, of span
±1LSD. NOTE: Reduced performance with
Type “B” Thermocouple below 600°C
(1112 ° F).
Linearisation Accuracy:
High resolution ranges - better than ±0.5°C
Low resolution ranges - better than ± 0.05 °C
Cold Junction
Compensation:
±0.3% typical, ±0.5% maximum.
RTD Inputs
Measurement Accuracy:
±0.02% typical, ±0.06% maximum, of span
±1LSD
Linearisation Accuracy:
High resolution ranges - better than ±0.5°C.
Low resolution ranges - better than
± 0.05 °C.
Operating Conditions
Ambient Temperature:
0°C to 55 °C
PM090-A Volume II A-5
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