Danfoss MBS 8200 and MBS 8250 Heavy Duty Pressure Transmitters
Document Type: Datasheet
Overview
The Danfoss MBS 8200 and MBS 8250 are heavy duty pressure transmitters designed for demanding industrial and mobile hydraulic applications. They are suitable for environments with pressure pulsations and vibrations. The MBS 8200 utilizes a piezoresistive sensor element combined with a programmable gain amplifier, offering high accuracy and temperature compensation. The MBS 8250 features a built-in pulse snubber for applications with severe media influences like cavitation, water hammer, or pressure peaks.
Features
- Designed for harsh industrial environments
- EMC protection up to 2 GHz (100 V/m) for MBS 8200, and 4 GHz (20 V/m)
- Suitable for media and ambient temperatures up to 125°C
- 3.3 mA pick-up/supply current
- Reverse polarity protection
- Integrated pulse snubber for MBS 8250 to withstand cavitation, water hammer, and pressure peaks
- Wetted parts and housing made of stainless steel (AISI 316L)
- Digital temperature calibration
- Output limiting/clipping
- Failure indication/monitoring
- RoHS compliant
Applications
The MBS 8200 and MBS 8250 are ideal for hydraulic systems where pressure pulsations and vibrations are common, such as during quick valve closures or pump start/stop cycles. They perform well even in low-pressure applications and are minimally affected by media viscosity, with response times remaining below 4ms even for high viscosity fluids (up to 100 cSt).
Technical Specifications
Performance (EN 60770)
| Parameter | MBS 8200 | MBS 8250 |
|---|---|---|
| Accuracy (25°C) (incl. non-linearity, hysteresis and repeatability) | ± 0.5% FS | ± 0.5% FS |
| Non-linearity BFSL (consistent) | ≤ ± 0.2% FS | ≤ ± 0.2% FS |
| Hysteresis and repeatability | ≤ ± 0.1% FS | ≤ ± 0.1% FS |
| Total error band in temperature compensated range | ≤ ± 1% FS | ≤ ± 1% FS |
| Response time (10-90%) | < 2 ms (media viscosity < 100 cSt) | < 4 ms (media viscosity < 100 cSt) |
| Overload pressure (static) | ≤ 35 ms | ≤ 35 ms |
| Burst pressure | 6 x FS (up to 1400 bar) | 6 x FS (up to 1400 bar) |
| Durability, P: 10-90% FS | > 10 x 10^8 cycles | > 10 x 10^8 cycles |
Electrical Specifications
| Parameter | Value |
|---|---|
| Nominal output signal (short circuit protected) | 4-20 mA (2-wire) |
| Supply voltage [UB] (reverse polarity protected) | 9-32 V DC |
| Supply current consumption | ≤ 6 mA |
| Supply voltage dependency | ≤ ± 0.05% FS/10 V |
| Current limit | 22 mA ± 0.5 mA |
| Pick-up/supply current | 3.3 mA |
| Output impedance | ≤ 25 Ω |
| Max. load [RL] (load connected to 0 V) | RL ≤ (UB-9V) / 0.02 A |
Environmental and Mechanical Specifications
| Parameter | Specification |
|---|---|
| Media temperature range | -40 - 125 °C |
| Ambient temperature range | -40 - 125 °C (refer to page 6 for details) |
| Storage temperature | -50 - 125 °C |
| EMC Emission | EN 61000-6-3 |
| EMC Immunity | EN 61000-6-2, ISO 11452-2 |
| Surge protection | 1 kV (420); line-to-line and line-to-ground |
| Insulation resistance | > 100 MΩ (500 V DC) |
| Vibration resistance | 15.9 mm-pp, 5-25 Hz (sinusoidal); 7.5 grms, 5-1 kHz (random) |
| Shock resistance | 500 g/1 ms (IEC 60068-2-27) |
| Impact resistance (free fall) | 1 m (IEC 60068-2-32) |
| Enclosure material | Stainless steel (AISI 316L) |
| Wetted parts material | Stainless steel (AISI 316L) |
| Net weight | < 0.07 kg |
Temperature Compensation Range: -20 - 100°C
Thermal drift outside temperature compensation range: ≤ ± 0.2% FS / 10°K
Diagram showing thermal drift: The diagram illustrates the thermal drift, showing a deviation of 1.4% at -40°C, 1% at 0°C, and 1.5% at 100°C, with the main compensation range between -20°C and 100°C.
Certifications
- UL 508: Industrial Control Equipment, File No. E311982
- UL 873: Temperature Indicating Equipment, File No. E31024
- UL 1604 Hazardous Location: Class I, Div 2, Group A, B, C and D, File No. E227388
- CRN: 0F18477.5CL
Ordering
The ordering code for the Danfoss MBS 8200/8250 series is structured as follows:
MBS 82..
- Model: MBS 8200 (standard) or MBS 8250 (with pulse snubber)
- Standard: 00
- Measurement Range: Various ranges available from 0-100 bar to 0-9000 psi.
- Pressure Connection: GB04 (G1/4), AC04 (1/4-18 NPT), BD08 (7/16-20 UNF-2A), FA08 (M14 x 1.5).
- Gasket: 0 (no gasket), 1 (fluorubber gasket, media temp. -20-125°C)
- Electrical Connection: A2 (AMP Econoseal), B2 (AMP Junior Power Timer), C2 (Round Packard Metri-Pack), C3 (Deutsch DT04 4-pin), A8 (Flying lead with AMP Superseal).
- Temperature Compensation: 33 (-20-100°C)
- Pressure Reference: 1 (gauge), 2 (absolute)
- Output Signal: 1 (4-20 mA), 6 (voltage, 0-10% FS)
Example ordering code structure: MBS 8250, GB04, A2, 1, 1, 33.
Electrical Connections and Dimensions
The document provides detailed diagrams for various electrical connection types (A2, B2, C2, C3, A8) and pressure connections (GB04, AC04, BD08, FA08), including dimensions and recommended torque values for installation.
Diagrams illustrating electrical connection types and pressure connections are provided, showing pin configurations, housing dimensions, and installation details.
Approvals and Certifications
The MBS 8200 and MBS 8250 series have received various certifications, including UL 508, UL 873, UL 1604, and CRN, indicating compliance with industrial safety and hazardous location standards.
