1.2 Measuring Input Section

Bias

A given value (bias value) is added to the input value and used as the measured value of that channel.

Biased channel

Input value

+

+

Measured value

Bias value

<Related Topics>

Setting the bias: Section 7.15 and 6.12

Burnout Detection of Thermocouples

This function makes the recording go off the scale to the right or left when the thermocouple burns out while measuring temperature with a thermocouple. This function can also be used on 1-5V. The burnout detection function can be set for each channel.

By default, this function is disabled.

Note

For 1-5V, a burnout occurs when the input value is less than or equal to 0.2 V.

<Related Topics>

Setting the burnout detection function: Section 7.3

Reference Junction Compensation of Thermocouple Input

When measuring the temperature using a thermocouple, the reference junction compensation on the recorder can be used. When using external reference junction compensation, you can set the reference voltage. The reference junction compensation can be set for each channel.

By default, the recorder is configured to use the internal reference junction compensation function.

Note

When using external reference junction compensation, set an appropriate reference junction compensation voltage. For example, if the reference junction temperature of the external reference compensation is T0 °C, set the reference compensation junction voltage to the thermoelectromotive force of the 0°C reference of T0 °C.

Example when using external reference junction compensation

Recorder

External reference junction compensation

 

(Hold the contact point of the thermocouple

 

and copper wire at T0°C)

 

Copper wire

 

Thermocouple

<Related Topics>

Setting the reference junction compensation function: Section 7.4

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Omega RD100B manual Burnout Detection of Thermocouples, Reference Junction Compensation of Thermocouple Input