4-20mA pressure transmitter: RS485 pressure sensor
4-20mA pressure transmitter is essential for accurate RS485 pressure sensor in industrial environments. The DR3702 series delivers reliable performance with analog pressure transmitter and loop-powered pressure sensor capabilities.
The Challenge: Reliable 4-20mA pressure transmitter in Demanding Conditions
Every morning at 8 AM, the reading was different. Same process. Same sensor. This inconsistency puzzled many until it was realized that long cables between the field and the PLC input card were acting as antennas, picking up electromagnetic interference (EMI). The drift observed was not due to changes in the actual process but rather from noise introduced into the 4-20mA loop. Long cables act as conductive paths for EMI, making accurate readings challenging.
DR3702 addresses this issue through its RS485 differential signaling capabilities, which reject common-mode noise entirely. By converting the current signal to a differential voltage with high immunity to EMI, DR3702 ensures that only the true sensor data is transmitted to the PLC input card.
Sensor drift or cable noise?
Technical Specifications of DR3702
- Output signal 4~20mA or RS485
- LCD display with backlight
- 4-digit or 5-digit display
- Nonlinear correction
- Reset the master variable
- Active or passive migration
- Five pressure unit switching (bar, psi, kPa, MPa, kg / cm2)
Applications for 4-20mA pressure transmitter
The DR3702 is ideal for industrial automation, hydraulic and pneumatic pressure monitoring, oil and gas facilities, water treatment, and remote IoT monitoring.
🔧 Need a Reliable 4-20mA pressure transmitter?
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Tags: #4-20mApressuretransmitter #IndustrialAutomation #PressureSensor #DR3702
