1. Purpose & Function:

️· The CVRTD is a signal conditioner designed to convert various sensor signals (current or voltage) into a compatible signal for use with PT100 RTDs (Resistance Temperature Detectors).
️· It provides isolation and signal conditioning to ensure accurate temperature readings.

2. Model Designation & Ordering Information:

️· Model Code Structure: `[Input Type][Output Type][RTD Equivalent]`
- [1] Input:
■ `A`: 4-20mA DC Current Input (250Ω input resistance)
■ `6`: 1-5V DC Voltage Input (1MΩ min. input resistance)
- [2] Output:
■ `1`: JPt 100 (JIS standard) equivalent
■ `3`: Pt 100 (JIS standard) equivalent
■ `4`: Pt 100 (IEC standard) equivalent
- [3] RTD Equivalent: Refers to the RTD type the output is configured for (doesn't change core functionality as much as it describes the calibrated output range).
️· Optional Codes:
- `/Q`: Allows for specifying options such as enclosure type, specific RTD configuration, or other customization.
- Example: `/C01/S01` (would select specific enclosure and screw type options)

3. Input and Output Specifications:

️· Input Options:
- 4-20mA DC current loop (250Ω input resistance)
- 1-5V DC voltage (1MΩ minimum input resistance)
️· Output Configuration: Configured to work with common RTD types (JPt 100, Pt 100, PT100 IEC) which impacts output calibration range, not the core conditioner functionality.
️· Resolution: ≤0.05Ω (up to 400Ω)

4. Installation & Environmental Considerations:

️· Power Requirements: Not explicitly stated, but implied to be a standard industrial power supply.
️· Operating Temperature: -5 to +55°C (23 to 131°F)
️· Humidity: 30 to 90% RH (non-condensing)
️· Mounting: Surface or DIN rail mount
️· Physical Dimensions: Refer to the diagram provided, including dimensions and mounting hole locations.
️· Space: Little to no extra space needed between units when mounting.

5. Performance Characteristics:

️· Accuracy: ±0.3% or ±0.1 Ω, whichever is greater.
️· Accuracy of Output Resistance at Power Failure: ±3%
️· Temperature Coefficient: ±0.02%/°C or [0.009 Ω + 0.00005 × Output Resistance (Ω)]/°C
️· Response Time: ≤0.5 seconds (0-90%)
️· Line Voltage Effect: ±0.1%

6. Safety & Standards:

️· Reinforced insulation (300V) for input/output to power circuits.
️· Complies with RoHS Directive.
️· EMC compliance (EN 61000-6-4 and EN 61000-6-2)
️· Low Voltage Directive compliance (EN 61010-1)

7. Schematic & Terminal Assignments:

️· A schematic diagram is provided to show internal components and signal flow.
️· Terminal assignments are shown, identifying terminals for input, output, and power connections.