Product Introduction

Using the 3500 Rack Configuration Software, the user configures the modules to perform RTD or TC temperature measurements. RTD/TC

non-isolated and TC isolated versions of various I/O modules are available. The RTD/TC non-isolated version can be configured to accept

either TC or RTD inputs, or a combination of TC and RTD inputs.

To protect against external interference, the TC isolated version provides 250 Vdc of channel-to-channel isolation.

Temperature monitors must be installed in groups of three when used in a Triple Modular Redundant (TMR) configuration. The system

uses two types of voting in this configuration to ensure accurate operation and to avoid single-point failures.

If the 3500 system is operated in an ambient temperature above +35C and any of the isolated thermocouple I/O modules (-03 or -04 I/O

ordering options) are used with Type E thermocouples, the available full-scale range is reduced. The reduced temperature range will be

-60 to +1000 degrees Celsius. Rack configuration software allows the user to configure a channel down to -100 degrees Celsius, but the

system will not function properly in this scenario and should not be configured to do so.

The I/O modules are available in both non-isolated and isolated forms, allowing users to decide based on the desired level of protection

against external interference. In the case of the TC isolated version, a remarkable feature is the provision of 250 Vdc of channel-to-

channel isolation. This isolation acts as a robust safeguard, ensuring that the measurements remain untainted by any potential external

disruptions, contributing to the precision and reliability of the temperature data.

One of the noteworthy capabilities of the RTD/TC non-isolated version is its adaptability. Users can configure this module to accept various

types of inputs. It can be set up to accommodate TC inputs, RTD inputs, or even a combination of both TC and RTD inputs. This flexibility

caters to scenarios where diverse temperature measurement sources coexist, offering a comprehensive solution that simplifies the

measurement process.

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