Introduction: Intelligent Pressure Measurement for Industry 4.0
In the fields of process automation and mechanical manufacturing, pressure sensors not only require high precision and stability, but also the ability to communicate bidirectionally with control systems. The dTRANS p35 pressure sensor (model 402058) launched by JUMO integrates IO Link interface (V1.1), supporting real-time exchange of process data, parameter configuration, diagnostic information, and status messages. This sensor is suitable for measuring relative pressure and absolute pressure, and the medium can be liquid or gas. The measurement range covers ± 400 mbar to 600 bar, and provides multiple process connections and electrical interfaces.
This article is based on the operation manual V7.01, which systematically explains the key points of engineering application of dTRANS p35 from installation, electrical connection, equipment function, parameter configuration, fault diagnosis to maintenance, helping engineers quickly complete selection, debugging and operation.
Product Overview and Core Features
1.1 Product positioning
DTRANS p35 is an industrial pressure sensor with IO Link communication designed for automation systems in factories and mechanical engineering. Its core functions include:
Measure relative pressure (gauge pressure) and absolute pressure.
Transmit measurement values through IO Link interface while retaining two switch outputs (SIO mode).
Support flexible configuration of hysteresis function, window function, switch delay, output polarity (PNP/NPN), etc.
Provide fine-tuning (two-point calibration) and teaching functions for easy on-site calibration.
Having comprehensive fault indication (invalid process values, out of range, hardware errors, etc.).
1.2 Naming Rules and Order Numbers
According to the ordering code (see page 9 of the document), users can customize the following options:
Basic type: 402058- JUMO dTRANS p35
Input/measurement range: from -400~+400 mbar relative pressure to -1~+600 bar relative pressure, and absolute pressure from 0 to 100 bar, etc.
Output: 458- IO Link measurement value transmission+digital output
Process connection: Multiple threads (G1/4, G1/2, NPT1/4), clamps (DN10~DN50), tapered sleeves (DIN 11851), JUMO PEKA sanitary type, etc.
Material: Stainless steel 316L (diaphragm, welding ring, process connection)
Electrical connection: M12 × 1 circular plug (A code)
Additional codes: UL certification, H2 ready (for mobile hydrogen applications), moisture and vibration protection, etc.
Engineers should select appropriate process connection and sealing materials based on the medium temperature, pressure range, hygiene requirements (EHEDG), and environmental conditions when selecting.
Detailed explanation of technical specifications
2.1 Input and Accuracy
DTRANS p35 provides multiple measurement ranges, with the following accuracy parameters (taking a typical range as an example):
Measurement Range Linearity (% MSP) Accuracy at 20 ° C (% MSP) Long term Stability (% MSP/year) Overload Capacity (bar) Burst Pressure (bar)
-1~+30 bar rel. 0.2 1.0 ≤0.2 100 150
0~100 bar abs. 0.2 1.4 ≤0.2 400 400
-1~+400 bar rel. 0.5 1.2 ≤0.5 800 2000
Accuracy: including linearity, hysteresis, repeatability, starting value and full-scale deviation.
Long term stability: varies annually under reference conditions (EN 61298-1).
Overload and explosion: The sensor's tolerance far exceeds the range, and all models are resistant to vacuum.
2.2 Output and Interface
IO Link mode: Communication rate COM3 (230.4 kBaud), minimum cycle 2ms, maximum unshielded cable length 20m. The device description file (IODD) can be downloaded from the official website or IODDFinder.
SIO mode: Two switch outputs, maximum 100mA per circuit, short circuit protection, reverse polarity protection.
Response time: switch output ≤ 7ms, IO Link output ≤ 7ms+cycle time.
2.3 Environmental and mechanical parameters
Medium temperature: standard -40~+125 ° C; optional extension 004 can reach -40~+200 ° C; H2 ready version -40~+120 ° C.
Environmental temperature: -40~+85 ° C (electronic head)
Protection level: Absolute pressure IP65/IP67, gauge pressure IP65.
Anti vibration/anti impact: 10g (10-2000Hz)/20g (11ms), in accordance with DIN EN 60068-2-6/27.
Material: 316L diaphragm, high pressure range (>100bar) using 630 stainless steel, shell made of 304 stainless steel.
Weight: Approximately 160g.
2.4 Certification and Compliance
UL certification: Document number E201387, compliant with UL 61010-1 and CAN/CSA C22.2 No.61010-1.
EHEDG: Suitable for sanitary process connections (clamps DN25/32/40/50 and PEKA), meeting the requirements of in-situ cleaning (CIP).
H2 ready: Mobile Hydrogen Application Certification (KIWA P000415366HGV19).
China RoHS: Compliant with China's hazardous substance restriction requirements.

Mechanical Installation Guide
3.1 Precautions before installation
Sensors are not suitable for safety critical applications (such as safety attachments in the Pressure Equipment Directive 2014/68/EU).
Prohibited from use in potentially explosive environments.
The sensor must be connected to the equipotential bonding system of the factory through a process connection.