FISCHER DE49 A Series, Operating Manual

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6 | Technical data FISCHER Mess- und Regeltechnik GmbH
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6 Technical data
6.1 General
Please also observe the order code here.
6.2 Input variables
Measuring variable: Differential pressure for gaseous media
Measuring ranges Stat. operating pressure
max. Bursting pressure
0 … 250 mbar max. 3 bar > 25 bar
0…1 bar
6.3 Output parameters
Outlet Signal range Apparent ohmic resistance
4…20 mA, 3.5…22.5 mA R
L
≤ (U
b
– 4 V)/0.02 A
6.4 Measurement accuracy
The information refers to a linear, non-spread characteristic curve at 25 C and
applies to all measuring ranges. FS (Full Scale) refers to the basic measuring
range.
Characteristic curve deviation
(Non-linearity and hysteresis)
Maximum: 1.0 % FS
Typical: 0.5 % FS
Temperature coefficient (TK)
Zero point: max. 0.2 % FS / 10 K
Span: max. 0.2 % FS / 10 K
6.5 Display and control elements
Display
4-digit LC display stating the measuring unit
Keyboard
Foil keypad with 3 buttons
Programming
Damping 0.0 … 100.0 s (jump response time 10 / 90 %) for sig-
nal input
Measuring range unit mbar, bar, Pa, KPa, PSI and inWc
Start / end of measuring
range User-definable within the basic measuring range
(1)
Output signal Adjustable limit values within the signal range
Zero-point stabilising Zero-point window max. ⅓ of the basic measuring
range
(2)
Zero point correction ±⅓ of the basic measuring range
(3)
Implementation of char-
acteristic curve Linear, rooted, max. 4:1 spread, inverted
Password 1 ... 999 (0 = no password protection)
(1) Max. effective spread 4:1
(2) measured values around zero are set to zero.
(3) Zero-point correction to compensate different installation positions.