Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | SE4303T02 |
| Brand | Emerson DeltaV |
| Product Type | Thermocouple/mV Input CHARM |
| System Platform | Emerson DeltaV Distributed Control System (DCS) |
| Origin | USA |
| Operating Temp | -40 deg C to 85 deg C for integrated CJC operation |
| Power Consumption | 0.30 W heat dissipation; 22 mA max. at 24 VDC |
| Input Types | Thermocouple Types B, E, J, K, N, R, S, T; millivolt inputs +/-20 mV, +/-50 mV, +/-100 mV |
| A/D Converter Resolution | 24-bit |
| Repeatability | 0.05% of span |
| Isolation | Galvanic isolation per sensor input; factory tested to 1000 VDC |
| Cold Junction Compensation | Integrated CJC; accuracy +/-1.0 deg C |
| Common Mode Rejection | 90 dB at DC, 50 Hz, and 60 Hz |
| Open Sensor Detection | Supported |
| Calibration | Factory calibrated; no field calibration required |
| Terminal Connections | 2 screw cage terminals, 0.32 mm2 to 2.5 mm2 / 22 AWG to 14 AWG |
| Module Function | Hot-swappable CHARM analog input module |
Emerson DeltaV CJC and Channel Isolation Technology
The SE4303T02 integrates cold junction compensation (CJC) directly into the CHARM hardware to process thermocouple signals without external compensation wiring. Therefore, the module measures low-level thermoelectric signals and converts them through a 24-bit analog-to-digital converter.
Additionally, the module provides channel galvanic isolation to separate field sensor circuits from system electronics. This design supports DeltaV Electronic Marshalling architectures where field wiring connects directly to characterized I/O modules.
The module applies channel-to-channel isolation methods for thermocouple and mV inputs. Furthermore, the input design supports signal integrity control through common mode rejection of 90 dB across DC and industrial frequency interference ranges.
Frequently Asked Questions
Q: What thermocouple types are supported by the Emerson SE4303T02?
A: The SE4303T02 supports Type B, E, J, K, N, R, S, and T thermocouple inputs, together with low-level millivolt voltage measurements.
Q: Does the SE4303T02 require external cold junction compensation hardware?
A: No. The module contains integrated cold junction compensation circuitry with factory specified CJC accuracy.
Q: Can the SE4303T02 be replaced while the DeltaV system remains powered?
A: The CHARM module supports hot-swappable operation. Installation must follow DeltaV system maintenance procedures and approved field safety practices.
Field Installation Guidelines
- Install the SE4303T02 on the designated DeltaV CHARM baseplate with the correct mechanical alignment.
- Verify terminal block wiring before connecting thermocouple or millivolt field signals.
- Maintain proper thermocouple polarity to prevent measurement errors.
- Use appropriate thermocouple extension wire matching the sensor type.
- Separate low-level analog signal wiring from high-voltage power conductors to reduce electrical interference.
- Connect cable shields according to the plant grounding standard and DeltaV installation guidelines.
- Confirm module status and input diagnostics after installation through the DeltaV engineering workstation
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