BD SENSORS DMP 333 Industrial Pressure Transmitter

Product basic positioning and core advantages

Core positioning: DMP 333 is an industrial pressure transmitter designed by BD SENSORS specifically for high-pressure hydraulic applications. It focuses on static/dynamic high-pressure scenarios and can withstand positive and negative pressure peaks. It is suitable for industrial scenarios such as machine tools, hydraulic presses, injection molding machines, mobile hydraulic equipment, and test benches.

Core advantages:

Excellent long-term stability, able to maintain accuracy even in rapidly changing pressure environments;

Strong ability to withstand peak pressure, with sufficient redundancy between overpressure and burst pressure (maximum burst pressure of 1800 bar);

Modular design, which can combine different sensors, electronic modules and mechanical/electrical interfaces to meet diverse needs;

Fully certified, supporting intrinsic safety and SIL 2 functional safety levels, suitable for hazardous environments and high safety requirements scenarios.

Core technical parameters

（1） Pressure related parameters

Nominal pressure (bar) Overpressure (bar) Burst pressure (≥ bar) Applicable seals (optional)

100 210 1000 FKM/EPDM（≤160bar）

160 600 1000 FKM/EPDM

250 1000 1250 FKM

400 1000 1250 FKM

600 1000 1800 FKM

（2） Output signal and power supply specifications

Wiring Method Output Signal Supply Voltage (VDC) Load Requirement Response Time

2-wire system (standard) 4… 20 mA 8~32 (conventional); 14~28 (SIL/IS version) Rmax=[(VS VSmin)/0.02A] Ω≤ 10 ms

3-wire system (optional) 0… 20 mA 14~30 Rmax=240 Ω≤ 3 ms

3-wire system (optional) 0… 10 V 14~30 Rmin=10 k Ω≤ 3 ms

Customized version: Other signals can be customized according to needs and negotiated based on signal customization

（3） Accuracy and stability

Accuracy standard: Complies with IEC 61298-2, including nonlinearity, hysteresis, and repeatability errors, with a standard accuracy of ± 0.35% FSO, optional ± 0.25% FSO or ± 0.1% FSO (note: ± 0.1% FSO version is not compatible with SIL 2 certification);

Long term stability: ≤± 0.1% FSO/year (under reference conditions);

Environmental impact: For every 10V change in power supply voltage, the error is ≤± 0.05% FSO; For every 1k Ω change in load, the error is ≤± 0.05% FSO; The temperature compensation range is 0… 70 ℃, and the total error band is ≤± 0.75% FSO.

（4） Environmental and lifespan parameters

Parameter type specific numerical note

The working temperature of the electronic part is -40… 85 ℃, and the temperature resistance range of the core components is

The temperature of the medium is -40… 125 ℃, and the part in direct contact with the measured medium

Storage temperature -40… 100 ℃, withstand temperature when not in operation

Vibration tolerance 20 g RMS (10… 2000 Hz) in accordance with DIN EN 60068-2-6

Impact withstand 500 g (1 ms half sine wave) in accordance with DIN EN 60068-2-27

Long term reliability guarantee with a service life of 100 million load cycles

Structural design and material specifications

Core materials:

Pressure interface and shell: stainless steel 1.4404 (316L), corrosion-resistant and compatible with industrial media;

Diaphragm: Stainless steel 1.4435 (316L), ensuring pressure sensing accuracy and durability;

Sealing element: FKM standard configuration, EPDM material can be selected when the nominal pressure is ≤ 160 bar;

Cable gland: Nickel plated brass (clamping range 2… 8 mm).

Protection level: Depending on the electrical connection method, the protection level is divided into IP65 (ISO4400), IP67 (Binder723/M12x1/BNC), and IP68 (with ventilation duct cable), suitable for different industrial environments.

Certification and optional versions

Intrinsic Safety (IS) Version:

Certification standards: Ex ia IIC T4 Ga (gas environment), Ex ia IIIC T135 ℃ Da (dust environment);

Applicable conditions: Only supports 2-wire 4… 20 mA output, power supply voltage 10… 28 VDC, must meet safety parameters such as Ui=28 VDC, Ii=93 mA, Pi=660 mW, etc.

SIL 2 version:

Certification standards: comply with IEC 61508 (functional safety) and IEC 61511 (process industry);

Applicable conditions: Only supports 2-wire 4… 20 mA output, power supply voltage 14… 28 VDC, not compatible with ± 0.1% FSO high-precision version.

Customized version: Supports customer specific specification customization (such as special output signals, threaded interfaces, cable types, etc.), please contact the manufacturer for consultation.

Connection method and installation

（1） Electrical connection options

Connection type, protection level, core specifications

ISO4400 (male/female plug) IP65 standard industrial plug, suitable for conventional scenarios

Binding 723 (5-pin male plug) IP67 waterproof design, suitable for humid environments

M12x1 (4-pin metal male plug) IP67 anti vibration, suitable for mobile devices

Bayonet MIL-C-26482 (10-6) IP67 military grade interface, high reliability (2-wire/3-wire optional)

Cable outlet (PVC) IP67 standard 2m cable, temperature -5… 70 ℃, customizable length/material

Cable outlet (with ventilation duct) IP68 deep waterproof, suitable for harsh and humid environments

Cable parameters: capacitance of 160 pF/m (signal line shield/signal line signal line), inductance of 1 μ H/m (as before);

Wiring colors (IEC 60757): Power+(WH white), Power – (BN brown), Signal+(GN green), Shielding (GNYE green yellow dual color).

（2） Mechanical connection options

Standard threads: G1/2 “DIN 3852, G1/2” EN 837, G1/4 “DIN 3852, G1/4” EN 837, 1/2 “NPT;

Installation method: In any direction (factory calibrated for vertical installation, pressure interface facing downwards, other directions do not affect accuracy).

Safety and Compliance

Electrical protection: equipped with permanent short-circuit protection, no damage but not working when connected in reverse polarity;

Electromagnetic compatibility: compliant with EN 61326 standard (emission and immunity);

EU Compliance: Compliant with EMC Directive 2014/30/EU, Pressure Equipment Directive 2014/68/EU (applicable only to module A, overpressure>200 bar version), ATEX Directive 2014/34/EU (applicable to IS version).