Servomex SERVOTOUGH Oxy, Operator'S Manual

Page: 26 / 145

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© Servomex Group Limited. 2020 01910001B_8
Oxygen Measurement
Display indica�on Measured volume % oxygen
Measurement ranges from 0 to 1% to 0 to 21% oxygen
Lower Detec�on Limit <±50ppm oxygen
Linearity No measurable error
Repeatability ±0.02% oxygen
Intrinsic error (accuracy) <±0.05% oxygen (based on 95% confidence limits)
Zero dri� per week < 0.05% oxygen
Span dri� per week
< 0.05
% oxygen
Output fluctua�on (peak to peak) < 0.01% oxygen
T90 response �me < 6 seconds (at 200 ml min
-
1 and 1 l min
-
1)
Sample flow effect:
(50
-
250 ml min
-1 or 12 -
70 l hr
-
1)
zero < 0.1% oxygen
span < 0.5% reading
Zero temperature coefficient:
<±0
.03% oxygen per 10
°C
(18
°F
) change in temperature
Sample vent pressure effects:
Pressure compensa�on not fited
1% change in sample vent pressure corresponds to 1%
change in reading
Pressure compensa�on fited
1% change in sample vent pressure corresponds to 0.05%
change in reading.
Flowcube (F3) Flow Sensor
Intrinsic Error
<±5% of full scale for 100% N2* (based on 95% confidence
limits)
Resolu�on 1% of full scale
Span temperature coefficient: <±2% of full scale per 10
°C
(18
°F
) change in temperature
T90 response �me < 15 seconds
Recommended Calibra�on Interval
6 to 12 months
* For gases with higher molecular weights than N2, the accuracy will be <±10% of full scale.