Danfoss MBS 8200, MBS 8250 Data sheet

Data Sheet

Pressure Transmitter Type MBS 8200 and MBS 8250

For Wind Turbine Applications

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 ampliers 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 unaected by electromagnetic elds up to 100 V/m.

MBS 8250 with integrated pulse-snubber is designed for use in hydraulic applications with severe media inuences like cavitation, liquid hammer or pressure peaks, and oers a reliable pressure measurement, even under harsh environmental conditions.

Features

• 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

AI225186434746en-000701

Pulse-snubber

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

cycles

Nom. output signal (short-circuit protected)

4 – 20 mA (2-wire)

Supply voltage, U

(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

] (load connected to 0 V)

≤ (UB- 9 V) / 0.02 A [Ω]

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

Pressure Transmitter, type MBS 8200 and MBS 8250

Applications

Applications (MBS 8250)

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 conditions (MBS 8250)

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 lls, and furthermore because the nozzle orice is relatively big (0.4 mm). The media viscosity has only little eect on the response time. Even at viscosities up to 100 cSt, the response time will not exceed 4 ms.

Product specication

Technical data

Table 1: Performance (EN 60770)

Table 2: Electrical specications

Table 3: Environmental conditions

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