Page 354 - Bürkert

Technical Data (continued) Accuracy diagram
Fluid pressure max. PN16
1)
Accuracy (Flowrate) ≤ (0.01% of F.S.* + 2% of measuring value) Max. measurement max DN15
max DN20
deviation in %
Repeatability ≤ 1% 10 max DN25
* F.S. = Full scale (see flow range on accuracy diagram) 8
1) Under reference conditions i.e. measuring fluid = water, 6
ambient and water temperature = +20 °C.
4
2 8081
Electrical data 0
Power supply (V+) 12 - 36 V DC -2
Current consumption Own consumption: < 4 mA -4
Consumption with load: < 1 A -6
Reversed polarity of DC Protected -8
Voltage peak Protected -10 0,1 1 10 100 1000
Short circuit Protected for transistor output Flow rate in l/min
Output
Pulse (transistor)
Version without current NPN (as default setting) or PNP (on request),
output open collector, 700 mA max., 5 mA min.,
NPN output: 0.2 - 36 V DC
version with current output PNP (as default setting ) or NPN (on request),
open collector, 700 mA max., 5 mA min.,
PNP output: supply voltage (V+)
Current 4... 20 mA (sourcing mode and PNP transistor
as default setting, sinking mode and NPN
transistor on request)
loop resistance max. : 1100W at 36V DC
610W at 24V DC; 100W at 12V DC
Scaling K-factor: 500 Pulse/Litre
Pulse (Transistor) (version QN 0.6 and 1.5)
200 Pulse/Litre
(version QN 2.5 - 3.5)
100 Pulse/Litre (version QN 6.0)
Current 4 mA correspond to 0 l/min (by default) or to
Tmin of temperature range (on request)
20 mA correspond to Qmax. of flow range (by
default) or to Tmax. of temperature range (on
request)
Environment
Ambient temperature 5 °C to +55 °C (41 to 131 °F)
(operating and storage)
Relative humidity ≤ 80 %, without condensation
Standards, directives and approvals
Protection class IP65 with M12 cable plug plugged-in and
tightened
Standards, directives
EMC EN 61000-6-3, EN 61000-6-2
Pressure Complying with article 3 of §3 from 97/23/CE
Vibration directive.*
Shock EN 60068-2-6
EN 60068-2-27
Approval / Certificate 2.2 Certificate;
on request Calibration Certificate
* For the 97/23/CE pressure directive, the device can only be used under following condi-
tions (depend on max. pressure, pipe diameter and fluid).

Type of fluid Conditions
Fluid group 1, §1.3.a Forbidden
Fluid group 2, §1.3.a Allowed (PN*DN ≤ 1000)
Fluid group 1, §1.3.b Forbidden
Fluid group 2, §1.3.b Allowed

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