PERFORMANCE

Reference Conditions

Generally as EN60546-1.

Ambient Temperature:

20￿C ￿2oC

Relative Humidity:

60 -

70%

Supply Voltage:

90 -

264V AC 50Hz ￿1%

Source Resistance:

<10￿ for thermocouple input

Lead Resistance:

<0.1￿/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.

DC Linear Inputs

 

Measurement Accuracy:

￿0.25% of span ￿1LSD.

Thermocouple Inputs

 

Measurement Accuracy:

￿0.25% of span ￿1LSD. NOTE: Reduced

 

performance with Type “B” Thermocouple

 

between 100 - 600￿C (212 - 1112￿F).

Linearisation Accuracy:

Cold Junction

Compensation:

RTD Inputs

Better than ￿0.2￿C any point, any 0.1￿C range (￿0.05￿C typical). Better than ￿0.5￿C any point, any 1￿C range.

Better than ￿0.7￿C.

Measurement Accuracy:

Linearisation Accuracy:

￿0.25% of span ￿1LSD

Better than ￿0.2￿C any point, any 0.1￿C range (￿0.05￿C typical). Better than ￿0.5￿C any point, any 1￿C range.

A-9

Volume II

S077-A

Page 74
Image 74
Omega CN1166 manual Performance Under Reference Conditions