Datasheet ESRF-ESF

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4. Flow Sensor Specifications

Characteristic

Absolute

Unit

Min.

Typ.

Max.

Flow direction

Unidirectional / bidirectional

-

Full scale ranges

Unidirectional

Bidirectional

10, 15, 20, 50, 100, 200, 300

±10, ±15, ±20, ±50, ±100, ±200, ±300

1.0

Max measured flow

-330

-

330

ln/min

Calibration gas

-

-20[-4]

-

+85[+185]

o

0[+32]

-

+50[+122]

o

Operating pressure

1.0

-

1.3

bara

Proof pressure

-

-

1.7

bara

Effective resolution

12

-

-

bits

Response time

-

35

-

msec

-

±0.125

-

%FS

-

±1.25

-

-

±0.125

-

%FS

-

±1.0

-

%RD

-

0.001

-

-

-

±0.1

1

2

Flow measured below this point will always indicate 0 ln/min

3

% of the full scale

4

Other, non-aggressive, gases available upon request

5

The temperature range over which the sensor will produce an output proportional to flow (Non condensing

humidity)

6

The temperature range over which the sensor will produce an output proportional to flow within the specified

performance limits. Note that for valid datasheet values, ambient and gas temperatures must be the same

7

The maximum deviation from ideal transfer function over the entire compensated temperature and flow range.

Includes all errors due to offset, full scale span, accuracy, thermal effect on offset, thermal effect on span and thermal

hysteresis

8

For the 10 ln/min FS flow option only, TEB for flows <10%FS is ±0.5%FS

9

% of the reading value

10

The maximum deviation in output from a Best Fit Straight Line (BFSL) fitted to the output measured over the flow

11

For the 10 ln/min FS flow option only, accuracy for flows <10%FS is ±0.5%FS

12

Added measurement error due to orientation deviation from the optimal (calibration) position

13

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