AI225186434746en-000601 | IC.PD.P21.V6.02 | 1© Danfoss | DCS (im) | 2018.04
Data sheet
Pressure Transmitter for wind turbine applications
MBS 8200 and MBS 8250
MBS 8200 is a series of compact pressure
transmitters developed to withstand the pressure
pulsations and vibrations known in wind turbine
applications.
A new technology combining piezo resistive
sensor element and programmable gain
ampliers makes the MBS 8200 the obvious
choice for applications demanding highest
accuracy and insensitiveness against temperature
variations. Further this technology enhances the
functional safety by limiting the output signal
at excess pressure conditions, it allows excellent
sink/source capabilities and it leave the pressure
transmitters unaected by electromagnetic elds
up to 100 V/m.
MBS 8250 with integrated pulse-snubber is
designed for use in hydraulic applications with
severe media inuences like cavitation, liquid
hammer or pressure peaks, and oers a reliable
pressure measurement, even under harsh
environmental conditions.
Features
Approvals
• Designed for use in harsh industrial
environments
• EMC protection 100 V/m
• For media and ambient temperatures up to
125 °C
• Reverse polarity protected
• Version with integrated pulse-snubber.
• Protected against cavitation, liquid hammering
and pressure peaks
• Enclosure and wetted parts of AISI 316L
• Digitally temperature calibrated
• RoHS conformity
UL 508: Industrial control equipment,
le no. E311982
UL 873: Temperature indicating equipment,
le no. E31024
UL 1604 Hazloc: Class I, Div. 2, Group A, B, C and
D, le no. E227388
CRN 0F18477.5CL
Data sheet | Pressure Transmitter for wind turbine applications, type MBS 8200 and MBS 8250
© Danfoss | DCS (im) | 2018.042 | IC.PD.P21.V6.02 | AI225186434746en-000601
Technical data
MBS 8250
Pulse-snubber
Performance (EN 60770)
Non-linearity BFSL (conformity) ≤ ± 0.2% FS
Hysteresis and repeatability ≤ ± 0.1% FS
Total error band inside the compensated temperature range ≤ ± 1% FS
Thermal shift outside the compensated temperature range ≤ ± 0.65% FS / 10 K
Response time MBS 8200 (10-90%) < 2 ms
Response time MBS 8250 (10-90%)
Liquids with viscosity < 100 cSt < 4 ms
Air and gases < 35 ms
Overload pressure (static) 6 × FS (max. 1400 bar)
Burst pressure > 6 x FS (max 1800 bar)
Durability, P: 10 – 90% FS > 10 × 10
6
cycles
Electrical specifications
Nom. output signal (short curcuit protected) 4 – 20 mA (2-wire)
Supply voltage, U
B
(polarity protected) 9 – 32 V DC > 32 V: Contact Danfoss
Supply voltage dependency ≤ ± 0.05% FS / 10 V
Current limitation (linear output signal up to 1.5 × rated range) 22 mA ± 0.5 mA
Load [R
L
] (load connected to 0 V)
R
L
≤
U
B
- 9 V
[Ω]
0.02 A
Environmental conditions
Media temperature range -40 – 125 °C
Ambient temperature range -40 – 105 °C
Compensated temperature span Δ 80 °C
Compensated temperature range default -10 – 70 °C
Storage temperature -50 – 125 °C
EMC - Emission EN 61000-6-3
EMC Immunity RF Field
100 V/m, 20 MHz – 2 GHz
ISO 11452-2
20 V/m, 2 GHz – 4 GHz
Insulation resistance > 100 MΩ at 500 V DC
Vibration stability
Sinusoidal
15.9 mm-pp, 5 Hz-25 Hz
IEC 60068-2-6
25 g, 25 Hz - 2 kHz
Random 15 g
rms
, 5 Hz – 1 kHz IEC 60068-2-64
Shock resistance
Shock 500 g / 1ms IEC 60068-2-27
Free fall 1 m IEC 60068-2-32
Enclosure (depending on electrical connection) See page 5
Application
Cavitation, liquid hammer and pressure peaks may
occur in hydraulic systems with changes in ow
velocity, e.g. fast closing of a valve or pump starts
and stops.
The problem may occur on the inlet and outlet
side, even at rather low operating pressures.
Media condition
Clogging of the nozzle may occour in liquids
containing particles. Mounting the transmitter in
an upright position minimizes the risk of clogging,
because the ow in the nozzle is restricted to the
start-up period when the dead volume behind the
nozzle fills, and furthermore because the nozzle
orice is relatively big (0.4 mm). The media viscosity
has only little eect on the response time. Even at
viscosities up to 100 cSt, the response time will not
exceed 4 ms.