JUMO dTRANS p35 Manual

JUMO dTRANS p35 Manual

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.

The installation direction is arbitrary, but it is necessary to avoid wear at the process connection.

3.2 Installation steps

Manually screw the sensor into the corresponding threaded hole to ensure that the sealing ring (such as O-ring) is in the correct position.

Tighten with a suitable wrench, and refer to the "Process Connections" table on page 17 of the document for torque values (torque varies for different connection forms).

For hygienic applications (EHEDG), the following principles should be followed:

Install with as few cavities as possible.

The connecting socket should be self draining.

When installed on the tank, it must be level to ensure that the cleaning spray directly covers it.

The leakage hole should be clearly visible, with the vertical pipeline facing downwards.

3.3 Special requirements for EHEDG compliance

The document clearly states that the following process connections are applicable to EHEDG: 613, 616 (clamp DN25~50, sealed with Tri Clamp) and 997 (JUMO PEKA, FKM O-ring). During installation, it is necessary to ensure that L<D (cavity depth less than diameter) and regularly check for leakage holes.

Electrical connections and IO Link configuration

4.1 Definition of M12 connector pins

The sensor uses M12 × 1A coded circular plug, and the color coding conforms to the standard cable:

Pin color signal (SIO mode) signal (IO Link mode)

1 Brown (BN) L+(9.6~32V DC) L+(18~32V DC)

2 White (WH) I/Q (OUT2) I/Q (OUT2)

3 Blue (BU) L - L-

4 Black (BK) C/Q (OUT1) C/Q (IO Link)

Potential equalization: Functional grounding is achieved through process connections.

UL application: The cables used must have UL certification (such as AVLV2/8 or CYJV/7) and be suitable for environments above 90 ° C.

4.2 Connection Example

On page 23 of the document, four types of connection diagrams are provided:

IO Link operation+1 switch output (OUT2 as PNP or NPN)

Switch operation+2 switch outputs (PNP or NPN)

In IO Link mode, OUT1 is used for communication, while OUT2 can still be used as an independent switch output. The sensor automatically detects the connection type (IO Link or SIO).

4.3 IO Link Startup Process

Start the IO Link master station hardware and software.

Download IODD file: Visit www.jumo.de, search for "402058", download the ZIP compressed file under "Software", unzip it, and locate the IODD based on the device ID (see nameplate).

Backup address: http://ioddfinder.io-link.com

Import IODD into the configuration tool and update the device directory.

Create a project, establish connections, and perform parameter reading and writing, process data monitoring, and diagnosis.

Detailed explanation of device functions

The configuration parameters of dTRANS p35 are accessed through the index/sub index of IO Link, mainly divided into process data, configuration data, and service data.

5.1 Switching point function

Each switch output can be independently configured into four modes: hysteresis normally open, hysteresis normally closed, window normally open, window normally closed, or closed.

Hysteresis function

The switch point (SP) and release point (rSP) must meet the requirement of SP ≥ rSP.

Output action when the measured value exceeds SP, reset when it is below rSP. Hysteresis width=SP - rSP.

Suitable for single limit monitoring of liquid level, pressure switch, etc.

window function

Defined by window low (FL) and window high (FH), FH ≥ FL.

When the measured value is within (FL, FH), output an action and reset outside the window. The hysteresis of the window is fixed at ± 0.25% range (symmetrical).

Suitable for pressure range monitoring, such as detecting whether the pressure is within the allowable range of the process.

Switch delay

Connection delay (VSP): After the measured value crosses the SP, the delay set time output is closed.

Turn off delay (VrSP): The delay setting time output will only disconnect when the measured value is below rSP.

Range 0-100 seconds, capable of filtering out pressure spikes or disturbances.

5.2 Fine tuning (two-point correction)

When there is a non-linear deviation between the sensor measurement value and the reference value, the fine-tuning function can be used to correct the characteristic curve (offset+gain correction).

parameter

Active: Yes/No

Actual start value - current measurement value of the sensor

Target start value - reference measurement value

Actual end value

Target end value

Operation steps (taking pressure vessels as an example):

Set the container pressure to a low point (such as 20 bar) and record the reference instrument value.

Read the sensor value (such as 15 bar) and input it as the "actual starting value"; Enter a reference value of 20 bar as the 'target starting value'.

Set the container pressure to a high point (such as 80 bar), with a reference value of 80 bar, and the sensor displays 70 bar.

Enter the actual endpoint at 70 bar and the target endpoint at 80 bar.

Activate fine-tuning.

After fine-tuning, the characteristic curve changes, but the data is not stored in the parameter manager (it needs to be reloaded or written through IO Link every time it is powered on). The actual starting/ending values can be quickly set through the teaching function.

5.3 Teaching Function

Provide the following one click operation:

The role of regional demonstration function

Universal parameter zero adjustment uses the current measurement value as an offset to reset PV to zero

Restore default settings for general parameters, reset switch points, fine tune, and event settings

Fine tune the actual starting value to assign the current measurement value to the actual starting value

Fine tune the actual endpoint value to assign the current measurement value to the actual endpoint value

Reset all service information and reset all service data (running hour counters, minimum/maximum values, etc.)

Reset the running hour counter for service information-

Service information reset drag indicator minimum/maximum value-

Attention: Frequent writing of EEPROM parameters (with a lifespan of approximately 100000 cycles) may result in memory errors. Avoid rapid and continuous writing.

5.4 Process Data and Status Byte

IO Link periodically transmits the following process data (index 40, sub index 0):

Pressure process value: The data type can be TFLOAT or TINT32, and the unit can be configured (bar, mbar, psi, kPa, etc.).

Pressure unit: TUINT8

Pressure process value status: bit field byte

Bit0: Invalid process value (over range or under range)

Bit1: Configuration data error

Bit2: Calibration data error (device malfunction)

Switch output status: bit 0 corresponds to OUT1, bit 1 corresponds to OUT2.

The status byte can be easily parsed by the upper system, achieving fast fault location.

5.5 Fault Indication and Events

When an error occurs, IO Link reports the device status and event code. The following table lists common faults and their manifestations in process values:

Fault Description Process Value Return Value Process Value Status Bit0 Event Code Configurable Switch

Process value invalid error value (such as 7e37) 1 0x1000 Yes

Exceeding the range of 2.0e37 1 0x8C20 is

Under range 1.0e37 1 0x8C20 is

Configuration data error - Bit1=1 0x6320 No

Equipment hardware failure error value Bit2=1 0x5000 Yes

Undervoltage -0x5111 No

Temperature error/overload -0x4000 No

PDValid flag: When the device status is "Fault" (4), PDValid=0， All process data is invalid.

Service Data and Maintenance

6.1 Service data (read-only or resettable)

Run hour counter (index 30000): Accumulated power on time.

Minimum/maximum pressure process values (index 30020/30030): Store historical extreme values.

Version information: VDN version, bootloader version.

The above data is cyclically written to the EEPROM every 10 minutes and can be reset through the teaching function.

6.2 Maintenance precautions

The equipment does not require regular maintenance, but it is recommended to regularly check the process connection sealing and cable integrity.

The surface of the sensor may be hot due to the heat medium, and it is necessary to cool it down and wear protective equipment during operation.

Before handling hazardous media (corrosive, flammable, etc.), a risk assessment must be conducted, referring to the media safety data sheet.

6.3 Disposal of Waste

According to the WEEE Directive (2012/19/EU), equipment cannot be disposed of as household waste. Manufacturers should be contacted for recycling or disposed of in accordance with local electronic waste regulations.

Accessories and spare parts

JUMO provides the following official attachments:

Name Order Number

Pre configured service 00427968

On site service deployment 00427970

4-channel IO Link master station 00759867

8-channel IO Link master station 00759875

USB 1-channel IO Link master station (including mini USB cable) 00694070

M8/M12 connection cable (2m, different configurations) 00767913/00767914/00767923/00767927/00777804

IODD files (V1.0.1/V1.1) 00681036/00681037

When using IO Link master stations not provided by JUMO, it is necessary to ensure that they support COM3 rates and a minimum cycle of 2ms.

Typical Engineering Applications and Troubleshooting

8.1 Case 1: Switch output misoperation

Phenomenon: When the pressure is stable, the switch output frequently jumps.

Analysis: It may be caused by pressure spikes or noise. Check if switch delay is enabled. Set the turn-on delay and turn off delay to 0.5-2 seconds to filter out transient disturbances. Simultaneously confirm whether the time constant of the digital filter (parameter "pressure filter time constant", index 122) is suitable for the site.

8.2 Case 2: IO Link Communication Failure

Phenomenon: The main station cannot recognize the sensor and the LED is not flashing.

Steps:

Check the power supply voltage: IO Link mode requires 18-32V, SIO mode requires 9.6-32V. Measure the voltage at pins 1-3.

Confirm that the length of M12 cable does not exceed 20m (unshielded) or longer (shielded).

Check if IODD is imported correctly. Use the device ID (6-digit number on the nameplate) to locate the corresponding IODD file.

Attempt to connect the sensor to the USB IO Link main station (00694070) and directly connect it to the PC to eliminate compatibility with the main station.

8.3 Case 3: Inadequate cleaning after EHEDG installation

Phenomenon: There are still residues near the sensor diaphragm after CIP.

Countermeasure: Check if the installation complies with the L<D principle. The leakage hole should face downwards and not be obstructed. For tank installation, ensure that the sensor is flush with the inner wall (flush with the diaphragm). Using front flush process connections with double seals (such as 574, 575) can reduce dead corners.

8.4 Case 4: Measurement still deviates after fine-tuning

Phenomenon: After two-point correction, there is still an error in the middle point.

Reason: The sensor characteristics themselves have good linearity, and fine-tuning only changes the gain and zero point. If the deviation of the midpoint is significant, it may be due to inaccurate reference measurements or unstable actual starting/ending pressure. It is recommended to wait for at least 10 seconds for the pressure to stabilize before performing the demonstration/inputting numerical values.