1. General Information

️· Model: 73VR21
️· Source: This information is pulled from pages 5 and 7 of a larger document (likely a datasheet) available at [https://www.m-system.co.jp/#](https://www.m-system.co.jp/#).

2. Accuracy of DC Voltage and Current Inputs (Based on Information Present)

️· The provided excerpt doesn't give the accuracies of DC Voltage and Current inputs.

3. Temperature Input Types and Accuracy

The 73VR21 supports a variety of temperature input types, each with its own accuracy specifications. Accuracy is given in two ways:
️· A general accuracy specification
️· A temperature-dependent accuracy specification that includes the equation: `±[Base Accuracy + (Measured Value * Temperature Coefficient)]`
- "Measured Value" is NOT an absolute value - it's relative to zero and must include the minus sign when calculating.


a) RTD (Resistance Temperature Detectors)

️· Types Supported:
- Pt 100 (JIS ’97, IEC)
- Pt 200
- Pt 300
- Pt 400
- Pt 500
- Pt 1000
- Pt 100 (JIS ’89)
- JPt 100 (JIS ’89)
- Pt 50 Ω (JIS ’81)
- Ni 100
- Ni 120
- Ni 508.4 Ω
- Ni-Fe 604
- Cu 10 @ 25°C
️· Accuracy Notes:
- Lower temperature ranges generally result in better accuracy for certain RTD types (Pt 300, Pt 400, Pt 500, Pt 1000, Ni 508.4 Ω).
- Accuracy is provided in both Celsius and Fahrenheit.

b) Thermocouples:

️· The provided excerpts do not mention the types of thermocouple supported.

4. Temperature Coefficient

️· There is a "Temperature Coefficient" table mentioned. However, only a statement that this table exists is present. No table is provided in the given excerpt. This implies a temperature dependency of the signal output that must be accounted for in certain use cases.

Key Takeaways and Potential Considerations:

️· Temperature Dependence: The accuracy of the temperature measurements is heavily dependent on the actual measured temperature. You MUST account for the temperature coefficient when interpreting accuracy specifications.
️· Data Source: This is only a partial excerpt. You should consult the full datasheet for complete specifications, supported input types and other relevant information.
️· Units: Pay close attention to the units (Celsius vs. Fahrenheit) in the accuracy specifications.