VEGABAR 29 Pressure Transmitter Overview
VEGABAR 29 is a pressure transmitter launched by VEGA for gauge pressure and absolute pressure measurement, widely used in chemical, water treatment, energy, and general industrial processes. It uses ceramic or metallic measuring elements, featuring high overload capacity and long-term stability, suitable for measuring the pressure of gases, vapors, and liquids.
This manual aims to provide engineering technicians and procurement personnel with complete reference for selection, installation, and commissioning. For complete technical documentation, click the link below to download the official Chinese manual.
Download VEGABAR 29 Chinese Manual.pdf
Technical Parameters and Performance Features
Core Measurement Parameters
- Measuring range: 0 ~ 0.1 bar to 0 ~ 100 bar (gauge pressure/absolute pressure optional)
- Accuracy class: ±0.2% of full scale (standard version), optional ±0.1%
- Process temperature: -40 ~ +150 °C (depending on process connection and sealing material)
- Ambient temperature: -40 ~ +80 °C
- Output signal: 4 ~ 20 mA / HART, optional Profibus PA, Foundation Fieldbus
- Supply voltage: 9.6 ~ 35 V DC (intrinsically safe version 9.6 ~ 30 V DC)
Key Performance Advantages
- High overload capacity: ceramic measuring element overload can reach more than 10 times the range
- Long-term stability: ≤ 0.1% / year
- Protection rating: IP66/IP67, optional IP68
- Explosion-proof certification: Ex ia IIC T6 Ga, Ex d IIC T6 Gb, etc.
Installation and Commissioning Steps
Installation Precautions
- Confirm that the process connection specifications (thread, flange, clamp, etc.) match the on-site pipeline.
- The installation location should avoid strong vibration, direct sunlight, and accumulation of corrosive gases.
- For gas measurement, it is recommended to install the transmitter above the pipeline; for liquid measurement, it is recommended to install it on the side or below the pipeline.
- When using sealing gaskets, ensure the material is compatible with the medium and the tightening torque meets the manual requirements.
Commissioning Points
- After power-on, check whether the output current is within the 4 ~ 20 mA range.
- Use a HART handheld communicator or VEGA commissioning software (such as DTM, PACTware) for zero and span calibration.
- If equipped with a display module, the range and unit can be quickly set via buttons.
- After commissioning, record the parameters and lock the settings to prevent misoperation.
Selection Comparison and Common Questions
Selection Parameter Comparison Table
| Parameter | Option A | Option B | Option C |
|---|---|---|---|
| Measurement type | Gauge pressure | Absolute pressure | — |
| Accuracy | ±0.2% | ±0.1% | — |
| Output signal | 4~20 mA/HART | Profibus PA | Foundation Fieldbus |
| Process connection | G1/2 | 1/2 NPT | Flange DN25 |
| Explosion-proof rating | Ex ia | Ex d | Non-explosion-proof |
Frequently Asked Questions (FAQ)
- Question 1: Can the VEGABAR 29 measure negative pressure?
Answer: Yes, the gauge pressure version supports negative pressure measurement. For the specific range, please refer to the range table in the manual. - Question 2: How can I obtain the Chinese manual?
Answer: Click the PDF link above in this article to download the complete version. - Question 3: Does it support on-site display?
Answer: An optional LCD display module is available, supporting backlight and multi-unit switching.
For more detailed installation dimensions, electrical connection diagrams, and certification information, please download the VEGABAR 29 Chinese Manual for reference.