Channel-to-Channel Isolation Signal Isolators
Description
Channel-to-Channel Isolation Signal Isolators are devices designed to provide electrical isolation between different channels within a system. They ensure that signals from one channel do not interfere with or affect the signals in another channel, maintaining the integrity and accuracy of the data being transmitted.
Working Principle
Channel-to-Channel Isolation Signal Isolators work by employing various isolation methods such as optical, magnetic, or capacitive barriers. Optical isolation, for example, uses light to transfer signals across an insulating gap, typically involving an LED and a photo-sensitive detector. This separation prevents direct electrical connection between channels, thereby eliminating the risk of common-mode voltage interference and ensuring high common-mode voltage rejection. These isolators are crucial in preventing potentially damaging currents from flowing between channels, thus protecting sensitive equipment and maintaining signal fidelity.
Applications
Channel-to-Channel Isolation Signal Isolators are used in environments where electrical isolation is critical for safety and performance. Specific applications include industrial settings where they are used to isolate resistance inputs for RTD, slidewire, strain, and potentiometer transmitters. They are also employed in current/voltage isolators for alarm tripping and deviation alarm notification, ensuring that high-voltage signals are stepped down to safer levels.
Advantages over other Signal Isolators
One of the key advantages of Channel-to-Channel Isolation Signal Isolators is their ability to provide high levels of isolation between channels, which is not always possible with other types of signal isolators. For instance, optical isolators can offer better common-mode noise rejection compared to transformer-based isolators, which are more suited for AC signals. This makes them particularly useful in environments with significant electrical noise or where precise signal integrity is required.
Limitations
A limitation of Channel-to-Channel Isolation Signal Isolators, particularly those using optical isolation, is the requirement for each element to have its own power supply. Additionally, optical isolators are generally more effective with small signals, which can be a constraint in applications involving larger signal amplitudes.
Considerations
When selecting Channel-to-Channel Isolation Signal Isolators, several factors should be considered. Initial costs can vary depending on the isolation method and the level of isolation required. Operating expenses may include the need for additional power supplies, especially in optical isolation systems. Durability and accuracy are generally high, but regular maintenance and potential replacement costs should be factored into the overall cost of ownership. Additionally, environmental factors such as exposure to heat, radio frequency interference (RFI), and electromagnetic interference (EMI) should be considered to ensure reliable performance in specific applications.
from AMETEK Programmable Power
16-Channel isolated high voltage measurement instrument. 24-bit SAR ADC per Channel. 128k samples/second/channel sample rate. 1000V channel-channel isolation. 500V channel-ground isolation. Input voltage ranges peak: ±420V/ ±10V/ ±1V. Data logger acquisition mode. 3-Pin screw... [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Digital Inputs; Isolated Digital Outputs
- Analog Channels: 16
- Form Factor: Rack Mount
- Application: General Lab & Industrial; Medical / Biomedical
from Dataforth Corporation
The 8BP01 is offered as a 5VDC powered (8BP01-X05) or 7 to 34VDC powered (8BP01-X24) single channel DIN rail mount carrier suitable for any 8B signal conditioner. The 8B carrier can be mounted on any standard DIN rail (EN 50022-35 and EN 50035-G32). The 8BP01 measures only 2.32 ” x 3.54... [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 16
- Form Factor: Backpanel
- Agency Approval: UL, CE
from Dataforth Corporation
The 8BP01 is offered as a 5VDC powered (8BP01-X05) or 7 to 34VDC powered (8BP01-X24) single channel DIN rail mount carrier suitable for any 8B signal conditioner. The 8B carrier can be mounted on any standard DIN rail (EN 50022-35 and EN 50035-G32). The 8BP01 measures only 2.32 ” x 3.54... [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 16
- Form Factor: Backpanel
- Agency Approval: UL, CE
from Dataforth Corporation
The 8BP01 is offered as a 5VDC powered (8BP01-X05) or 7 to 34VDC powered (8BP01-X24) single channel DIN rail mount carrier suitable for any 8B signal conditioner. The 8B carrier can be mounted on any standard DIN rail (EN 50022-35 and EN 50035-G32). The 8BP01 measures only 2.32 ” x 3.54... [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 16
- Form Factor: Backpanel
- Agency Approval: UL, CE
from Dataforth Corporation
The 8BP01 is offered as a 5VDC powered (8BP01-X05) or 7 to 34VDC powered (8BP01-X24) single channel DIN rail mount carrier suitable for any 8B signal conditioner. The 8B carrier can be mounted on any standard DIN rail (EN 50022-35 and EN 50035-G32). The 8BP01 measures only 2.32 ” x 3.54... [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 2
- Form Factor: Backpanel
- Agency Approval: UL, CE
from Dataforth Corporation
The 8BP01 is offered as a 5VDC powered (8BP01-X05) or 7 to 34VDC powered (8BP01-X24) single channel DIN rail mount carrier suitable for any 8B signal conditioner. The 8B carrier can be mounted on any standard DIN rail (EN 50022-35 and EN 50035-G32). The 8BP01 measures only 2.32 ” x 3.54... [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 2
- Form Factor: Backpanel
- Agency Approval: UL, CE
from Dataforth Corporation
The 8BP01 is offered as a 5VDC powered (8BP01-X05) or 7 to 34VDC powered (8BP01-X24) single channel DIN rail mount carrier suitable for any 8B signal conditioner. The 8B carrier can be mounted on any standard DIN rail (EN 50022-35 and EN 50035-G32). The 8BP01 measures only 2.32 ” x 3.54... [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 2
- Form Factor: Backpanel
- Agency Approval: UL, CE
from Dataforth Corporation
The 8BP01 is offered as a 5VDC powered (8BP01-X05) or 7 to 34VDC powered (8BP01-X24) single channel DIN rail mount carrier suitable for any 8B signal conditioner. The 8B carrier can be mounted on any standard DIN rail (EN 50022-35 and EN 50035-G32). The 8BP01 measures only 2.32 ” x 3.54... [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 4
- Form Factor: Backpanel
- Agency Approval: UL, CE
from Dataforth Corporation
The 8B isoLynx ® SLX300 - Dataforth's newly introduced data acquisition system - builds on the proven reliability and outstanding performance of the SCM5B isoLynx ® SLX200 and the miniature-sized SensorLex ® 8B isolated signal conditioning modules to provide a compact, low cost solution... [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input; Isolated Analog Voltage Output; Isolated Digital Inputs; Isolated Digital Outputs
- Analog Channels: 12
- Form Factor: PC Board; Panel / Chassis Mount (optional feature); DIN Rail (optional feature)
- Digital I/O Channels: 8
from Opto 22
The SNAP-AIVRMS-i module provides two isolated channels with an input range of 0 to 250 volts AC or DC. The SNAP-AIVRMS-i module may be used to monitor 120/240-volt AC/DC and 12/24/48-volt AC/DC system voltage and is ideal for differential voltage measurements. [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 2
- Form Factor: Modular Bay or Slot System
- Agency Approval: CE
from Silicon Labs
The Si86xx family is the industry ’s highest performing, widest channel count series of unidirectional and bidirectional isolators supporting up to 5 kV and reinforced isolation ratings. Based on Silicon Labs ’ patented isolation technology, Si86xx isolators enable robust operation in... [See More]
- Isolation: Channel-to-Channel Isolation
- Agency Approval: UL/ CSA/ VDE
- Form Factor: Surface Mount
- Application: General Lab & Industrial
from OMEGA Engineering, Inc.
The OMB-DBK208 signal conditioning and expansion board can be configured with up to 16 isolated Opto-22 compatible solid-state relay (SSR) digital I/O modules. Two 8-channel banks can be jumper-selected as either inputs or outputs. Each channel features screw terminals for the convenient connection... [See More]
- Isolation: Channel-to-Channel Isolation
- Analog Channels: 16
from Apix, Inc.
Model DAQ8-80mV41-SPi. ISODAQ SPi INTERFACE MODULE. The Daqpak SPi Series millivolt Input Modules feature 8 independent channels and an SPi interface. They are fully isolated with 3 KVrms between Input, Power, SPi serial link and 2 KVr [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 8
- Form Factor: Module
- Application: General Lab & Industrial
from Acromag, Inc.
4 to 20mA DC input. 4 to 20mA DC output. 15-36V DC SELV, 90-250V AC power. Single or dual I/O with a dual output model and full isolation. These units receive 4-20mA process current inputs and provide isolated 4-20mA output signals. Each channel operates independently and is isolated from the others... [See More]
- Isolation: Channel-to-Channel Isolation
- Analog Channels: 1
- Form Factor: Rack Mount (optional feature); DIN Rail
- Differential Channels: Yes
from Opto 22
The SNAP-AIVRMS-i-FM module provides two isolated channels with an input range of 0 to 250 volts AC or DC. The SNAP-AIVRMS-i-FM module may be used to monitor 120/240-volt AC/DC and 12/24/48-volt AC/DC system voltage and is ideal for differential voltage measurements. [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 2
- Form Factor: Modular Bay or Slot System
- Agency Approval: FM
from Apix, Inc.
DESCRIPTION. The ISODIN Series DIN Modules feature 8 independent Analog channels and conform to the Industry Standard Modbus RTU Communications Protocol. They are fully isolated with 3000 Vrms between Input, Power,. RS-485 ser [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Digital Inputs
- Analog Channels: 12
- Form Factor: DIN Rail
- Application: General Lab & Industrial
from Acromag, Inc.
4 to 20mA DC input. 4 to 20mA DC output. Input loop powered. Low-cost isolator. Up to four independent channels in a single unit with channel-to-channel isolation. These units receive 4-20mA process current inputs and provide isolated 4-20mA output signals. Power is derived from the input signal... [See More]
- Isolation: Channel-to-Channel Isolation
- Analog Channels: 1
- Form Factor: Rack Mount (optional feature); DIN Rail
- Differential Channels: Yes
from Opto 22
The SNAP-AIV-i provides two isolated channels of analog voltage input. Each channel can be configured for -10 to +10 VDC or for -5 to +5 VDC operation. In addition to having two channels isolated from each other, the module is also transformer isolated and optically isolated from other modules and... [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 2
- Form Factor: Modular Bay or Slot System
- Agency Approval: UL, CE
from Apix, Inc.
Model DAQ8-100V4-1RTU. ISODIN Modbus RTU DIN MODULE. This Modbus RTU version Voltage Input Module features 8 independent channels and an isolated RS-485 interface. The channels are fully isolated with 3000 Vrms between Input, Power, RS [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 8
- Form Factor: DIN Rail
- Application: General Lab & Industrial
from Acromag, Inc.
4 to 20mA DC input. 4 to 20mA DC output. 115V AC or 230V AC power. Three-way isolation. Zero and span adjustment enable precise calibration. Series 430i isolators provide 3-way isolation and do not require recalibration for different loads. The 430i accepts a 4 to 20mA process current input and... [See More]
- Isolation: Channel-to-Channel Isolation
- Analog Channels: 1
- Form Factor: DIN Rail
- Differential Channels: Yes
from Opto 22
The SNAP-AIV2-i provides two isolated channels of analog voltage input, -100VDC to +100VDC. In addition to having two channels isolated from each other, the module is also transformer isolated and optically isolated from other modules and devices. [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 2
- Form Factor: Modular Bay or Slot System
- Agency Approval: CE
from Apix, Inc.
Model DAQ8-10V4-1RTU. ISODIN Modbus RTU DIN MODULE. This Modbus RTU version Voltage Input Module features 8 independent channels and an isolated RS-485 interface. The channels are fully isolated with 3000 Vrms between Input, Power, RS- [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 8
- Form Factor: DIN Rail
- Application: General Lab & Industrial
from Acromag, Inc.
4 to 20mA DC input. 4 to 20mA DC output. 10-36V DC power. Three-way isolation. Series 330i isolators provide 3-way isolation and do not require recalibration for different loads. They accept a 4 to 20mA process current input and provide a 3-way isolated process current output signal. These isolators... [See More]
- Isolation: Channel-to-Channel Isolation
- Analog Channels: 1
- Form Factor: DIN Rail
- Differential Channels: Yes
from Opto 22
The SNAP-AOA-23-iSRC module provides two channels of current output with a nominal output range of 4 mA to 20 mA. The module includes built-in loop sourcing capability. With the connection of a single 24 V power supply, the module sources two 24 V loops. The loop sources are internally connected to... [See More]
- Isolation: Channel-to-Channel Isolation
- Analog Channels: 2
- Form Factor: Modular Bay or Slot System
- Agency Approval: CE
from Apix, Inc.
Model DAQ8-20mA4-1RTU. ISODIN Modbus RTU DIN MODULE. This Modbus RTU version Current Input Module features 8 independent channels and an isolated RS-485 interface. The channels are fully isolated with 3000 Vrms between Input, Power, RS [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 8
- Form Factor: DIN Rail
- Application: General Lab & Industrial
from Acromag, Inc.
4 to 20mA DC input. 4 to 20mA DC output. 10-36V DC power. 1500 AC peak isolation prevents ground loops. Calibration is independent of the load to eliminate load compensation adjustments. The 340i accepts a process current input and provides an isolated 4 to 20mA process current output signal. These... [See More]
- Isolation: Channel-to-Channel Isolation
- Analog Channels: 1
- Form Factor: DIN Rail
- Differential Channels: Yes
from Opto 22
With the connection of a single 24 V power supply, the module sources two 24 V loops. The loop sources are internally connected to the individual outputs. The two channels and their loop sources are isolated from each other; they do not share any field connection. In addition, each loop source is... [See More]
- Isolation: Channel-to-Channel Isolation
- Analog Channels: 2
- Form Factor: Modular Bay or Slot System
- Agency Approval: FM
from Apix, Inc.
Model DAQ8-80mV4-1RTU. ISODIN Modbus RTU DIN MODULE. This Modbus RTU version mV Input Module features 8 independent channels and an isolated RS-485 interface. The channels are fully isolated with 3000 Vrms between Input, Power, RS-485 [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 8
- Form Factor: DIN Rail
- Application: General Lab & Industrial
from Apix, Inc.
Model DAQ8-TC4-1RTU. ISODIN Modbus RTU DIN MODULE. This Modbus RTU version TC Input Module features 8 independent Thermocouple channels and an isolated RS-485 interface. Channel #8 can be used to measure a remote or local cold junction [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input
- Analog Channels: 8
- Form Factor: DIN Rail
- Application: General Lab & Industrial
from Apix, Inc.
DESCRIPTION. The ISODIN Series DIN Modules feature 8 independent Analog channels and conform to the Industry Standard Modbus RTU Communications Protocol. Based on their high channel density, a single 32 module segment includes 256 c [See More]
- Isolation: Channel-to-Channel Isolation; Isolated Analog Voltage Input; Isolated Analog Voltage Output; Isolated Digital Inputs; Isolated Digital Outputs
- Analog Channels: 8
- Form Factor: DIN Rail
- Digital I/O Channels: 32