1.  Resolve common-ground issues and prevent interference.

      In large-scale project upgrades, ground-sharing issues between different devices are frequently encountered, which often lead to signal interference and prevent the devices from properly acquiring and processing data. In such cases, users need a high-density, DIN-rail-mounted instrument that offers both low cost and high performance. The most effective solution is to install a Passive Isolator ( Nanjing Paroken Technology Co., Ltd. P/PA Series P-0133 Passive Signal Isolator ，PA-0133 Passive Signal Isolator ), it features unpowered, highly isolated output channels, along with advantages such as low cost, high-density mounting, and simple, straightforward wiring.

Selection example:

PA-0133 Passive Signal Isolator – 4–20 mA / 4–20 mA, or optional ↓

PA-1187 Active Signal Isolator – 4–20 mA / 4–20 mA (24 V DC Power Supply)

(All of the above parameters can be customized.)

2.  Sharing process signals between two locations

  Sometimes, users need to monitor a single field signal simultaneously at two different locations; the simplest and most cost-effective solution is to install a one-input, two-output Isolation Distributor ( Nanjing Paroken Technology Co., Ltd. PR/PG Series Signal Isolation Distributor PR-1127GG-D DC Signal Isolator and Distributor 、PG-113/PG-114 DC Signal Distributor “1-to-3, 1-to-4” ), it not only isolates ground loops, motor noise, and interference caused by certain electronic devices, but also splits a single signal into two to four identical or different signals, which can then be routed to two separate receiving devices for monitoring, recording, or control.

Selection example:

PR-112 DC Signal Distributor – 4–20 mA / 4–20 mA × 2 (powered by 220 V AC or 24 V DC)

PR-212 AC Signal Distributor – 4–20 mA / 4–20 mA × 2 (powered by 220 V AC or 24 V DC)

PR-312 with Power Isolation Distributor – 4–20 mA / 4–20 mA × 2 (powered by 220 V AC or 24 V DC)

PG-114 DC Signal Distributor – 4–20 mA / 4–20 mA × 4 (powered by 220 V AC or 24 V DC)

PG-1132 with Power Distribution Isolator (1 Input, 3 Outputs; 1 Input, 4 Outputs) – 4–20 mA / 4–20 mA × 2 (powered by 220 V AC or 24 V DC)

(All of the above parameters can be customized.)

3 ．Enhanced load-carrying capacity

Occasionally, users need to add an additional 250-ohm load (such as a PID controller) to the loop; however, this would exceed the maximum loop load of 600 ohms. The simplest and most cost-effective solution is to install a two-wire ECT with a low input impedance of 100 ohms and high drive capability for loads up to 500 ohms. This configuration enhances the loop’s load-handling capacity, making it suitable for applications such as PID controllers and other extended use cases.

Selection example: Any product from Nanjing Paroken Technology Co., Ltd.—P, PR, PA, or PG—can be customized to increase its load-carrying capacity.

4 ．Resolve power conflict issues

In some loops, users need to connect a 4-wire transmitter to the DCS; however, since the DCS supplies power to the input loop, a power conflict arises between the transmitter and the DCS. The simplest and most cost-effective solution today is to install an interface converter, which ( PA-02 Passive Power Distribution Isolator ，PA-1317 Distribution isolator ，PR-312 With power distribution isolator ，PG-213 Isolation Distribution Unit (Two Inputs, Two Outputs) It can be powered either by the input or the output circuit, thereby ensuring the normal operation of the entire loop and resolving the power supply conflict.

Selection example:

PA-02 Passive Power Distribution Isolator – 4–20 mA / 4–20 mA

PA-1317 Power Distribution Isolator – 4–20 mA / 4–20 mA (24 V DC Supply)

PR-312 with Power Isolation Distributor – 4–20 mA / 4–20 mA × 2 (powered by 220 V AC or 24 V DC)

PG-213 Isolated Power Distributor (Two Inputs, Two Outputs) – 4–20 mA × 2 / 4–20 mA × 4 (Powered by 220 V AC or 24 V DC)

PG-1132 with Power Distribution Isolator (1 Input, 3 Outputs; 1 Input, 4 Outputs) – 4–20 mA / 4–20 mA × 2 (powered by 220 V AC or 24 V DC)

(All of the above parameters are customizable.)

5 ．Public power savings

In large-scale renovation projects, numerous transmitters for different applications are typically installed, including both two-wire and four-wire models. If a single power supply is used to power multiple two-wire transmitters, a ground fault in the power supply or a failure of one transmitter can cause several other devices to malfunction. To avoid this, it is necessary to provide separate power supplies for each two-wire transmitter. To address these issues, an isolation power distributor can be installed, ensuring that each two-wire transmitter has its own independent power and signal paths. This approach reduces costs and enhances equipment safety.

Selection Example: PA-02 Passive Power Distribution Isolator – 4–20 mA / 4–20 mA

PA-1317 Power Distribution Isolator – 4–20 mA / 4–20 mA (24 V DC Supply)

PR-312 with Power Isolation Distributor – 4–20 mA / 4–20 mA × 2 (powered by 220 V AC or 24 V DC)

PG-213 Isolated Power Distributor (Two Inputs, Two Outputs) – 4–20 mA × 2 / 4–20 mA × 4 (Powered by 220 V AC or 24 V DC)

PG-1132 Power Distribution Isolator with Distribution Unit (1 Input, 3 Outputs; 1 Input, 4 Outputs) – 4–20 mA / 4–20 mA × 2 (Powered by 220 V AC or 24 V DC)

(All of the above parameters are customizable.)