The ABB DSAI146 Analog Input Unit is a specialized RTD input module developed for industrial temperature measurement applications. Designed for ABB Advant OCS and S100 I/O systems, the module supports up to 31 Pt100 temperature measurement channels plus one reference channel, ensuring accurate and stable data collection from field sensors.
Its advanced signal conditioning and high-resolution measurement capabilities make it ideal for process industries where precise temperature monitoring is essential. The module is widely deployed in power generation, chemical processing, oil & gas, water treatment, and manufacturing facilities.
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ABB DSAI146 (Part Number: 3BSE007949R1) is an Analog Input Unit engineered to interface directly with three-wire Pt100 resistance temperature detectors (RTDs). The module converts temperature signals into digital process values that can be used by ABB controllers and operator systems for monitoring, alarming, and control functions.
The module provides 31 independent measurement channels and one reference channel, enabling large-scale temperature monitoring from a single unit. Its high-precision design supports industrial applications requiring accurate thermal measurement and reliable long-term operation.
As part of the ABB Advant OCS product family, DSAI146 remains an important spare part for lifecycle support, retrofit projects, and modernization of existing ABB automation systems.
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| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model | DSAI146 |
| Product ID | 3BSE007949R1 |
| Product Type | Analog Input Unit |
| Input Type | Pt100 RTD (3-wire) |
| Measurement Channels | 31 |
| Reference Channels | 1 |
| Resolution | 12-bit + sign bit |
| Measurement Range | -100°C to +320°C or -200°C to +640°C (configurable) |
| System Family | ABB Advant OCS / S100 I/O |
| Dimensions | 324 × 234 × 22.5 mm |
| Weight | Approx. 0.40–0.41 kg |
| Country of Origin | Sweden / Poland |
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Supports 31 independent Pt100 measurement channels, reducing hardware requirements and cabinet space.
Provides precise temperature monitoring through advanced analog signal processing and RTD compensation technology.
Designed specifically for industrial three-wire Pt100 temperature sensors.
Offers reliable operation in electrically demanding industrial environments.
Seamlessly integrates into ABB Advant OCS and S100 I/O automation architectures.
Built for continuous operation in critical process control applications.
Used for turbine, boiler, generator, and auxiliary system temperature monitoring.
Provides accurate temperature measurements for process and equipment monitoring.
Supports thermal process control and safety monitoring applications.
Used in temperature-sensitive treatment and pumping systems.
Provides reliable RTD signal acquisition for production equipment and machinery.
Supports distributed control system (DCS) temperature monitoring applications.
ABB DSAI146 (3BSE007949R1) is an Analog Input Unit used for temperature measurement through Pt100 RTD sensors in ABB Advant OCS systems.
The module supports 31 measurement channels plus one reference channel.
It is specifically designed for three-wire Pt100 RTD temperature sensors.
The module is commonly used in ABB Advant OCS and ABB S100 I/O automation systems.
Yes. DSAI146 remains widely used as a spare part and replacement module for legacy ABB installations and modernization projects.
Do you provide global shipping services?
Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.
2. What payment methods and currencies do you accept?
To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.
How many parts do you currently have in stock?
We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.
Who can I contact if I encounter any problems?
Our experienced customer service team will handle any issues after you place your order.
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