Product Details
Description
The ABB AI835 is a high-performance analog input module designed specifically for direct temperature measurement using thermocouples within the S800 I/O system. This 8-channel unit provides precise conversion of low-voltage millivolt signals from various thermocouple types into digital values for the AC 800M controller. It features sophisticated cold-junction compensation and electrical isolation, making it an essential component for high-temperature monitoring in industrial furnaces, boilers, and turbine applications where thermal accuracy is paramount.
Specifications
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Manufacturer: ABB
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Country of Origin: Switzerland
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Model Number: AI835
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Order Number: 3BSE008520R1
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Product Type: Thermocouple Analog Input Module
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Input Channels: 8 isolated channels
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Thermocouple Types: B, C, E, J, K, N, R, S, T
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Linear Voltage Input: -30 to +75 mV
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Resolution: 15-bit plus sign
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Weight: 0.2 kg
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Power Supply: 24V DC nominal
Features
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Cold Junction Compensation: Supports both internal and external CJC to ensure measurement accuracy regardless of terminal temperature fluctuations.
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Superior Signal Integrity: Advanced interference rejection filters protect sensitive millivolt inputs from high-frequency industrial noise.
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Safety Diagnostics: Continuous monitoring for open-circuit detection (sensor break) with automatic reporting to the control system.
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Galvanic Isolation: Provides individual isolation between field inputs and system logic to prevent ground loop interference and equipment damage.
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Software Configuration: Every channel can be independently programmed for specific thermocouple types or millivolt ranges through System 800xA.
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Compact Maintenance: Designed for hot-swap installation on standard S800 Module Termination Units, minimizing downtime during hardware service.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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Preventing Emergency Stop Spurious Trips in Industrial Control Systems
Emergency Stop pushbuttons use Normally Closed contacts for fail-safe safety, but mechanical wear can cause costly spurious trips. This technical guide examines E-Stop contact failure root causes, redundant hardware setups, PLC logic monitoring, and maintenance strategies to maximize plant availability.
Why 24V DC Is the Universal Standard for Industrial Automation Power Supplies
Industrial manufacturing requires continuous uptime to prevent equipment damage. Unlike AC power, 24V DC circuits seamlessly integrate with UPS units and battery banks. During main grid failures, a 24V DC backup system instantly maintains PLC memory, instrument loops, and critical safety valves without interruption.