Eaton Crouse-Hinds MTL4073 Temperature Converter
ManufacturerEatonModelMTL4073Product TypeTemperature Converter
01Technical Summary
The Eaton Crouse-Hinds series MTL4073 converts low-level temperature-sensor signals from a hazardous area into a 4...20 mA safe-area output. The one-channel converter supports thermocouples, millivolt sources, and two-, three-, or four-wire platinum RTDs, with computer-based configuration for ranging, linearisation, monitoring, alarms, and tagging.
Selection ControlMatch the exact model, part number, installed system, wiring, approvals, and required revision before ordering.
02Applications
- Temperature conversion for sensors installed in hazardous areas.
- Thermocouple applications using the SCJ01 connector when integral cold-junction sensing is required.
- RTD conversion for two-, three-, or four-wire platinum sensors.
- Legacy MTL4000 backplane systems requiring configurable 4...20 mA temperature output.
03Specifications
| Manufacturer | Eaton |
|---|---|
| Model | MTL4073 |
| Product Type | Temperature converter |
| Number of Channels | 1 |
| Thermocouple Types | J, K, T, E, R, S, B, and N |
| RTD Types | 2/3/4-wire platinum, 100 ohm at 0 deg C |
| Input Signal Range | -75...+75 mV or 0...400 ohm |
| Input Span | 3...150 mV or 10...400 ohm |
| RTD Excitation | 200 uA nominal |
| Output | 4...20 mA nominal, direct or reverse |
| Maximum Load | 600 ohm |
| Cold-Junction Compensation | Automatic or selectable |
| Cold-Junction Error | <=1.0 deg C |
| Safety Drive | Upscale, downscale, or off |
| Power at 24 V | 57 mA |
| Power Dissipation | 1.2 W at 24 V with 20 mA signal |
| Isolation | 250 V AC between safe and hazardous circuits |
| Configuration | PCS45 software with PCL45 interface |
04Features
Design and Function
- Accepts eight documented thermocouple types plus millivolt and platinum RTD inputs.
- Provides configurable linearisation and direct or reverse 4...20 mA output.
- Supports automatic or selectable cold-junction compensation.
- Software functions include ranging, monitoring, testing, and tagging.
- Open-circuit and transmitter-failure responses can be configured.
- Green LED provides power and status indication.
- A standard configuration is defined, but the installed configuration should always be captured before replacement.
Verified Identity
- Manufacturer: Eaton Model: MTL4073 Product Type: Temperature Converter
05Compatibility
- Match the configured sensor type, engineering units, zero, span, damping, smoothing, and failure alarms.
- Use the SCJ01 hazardous-area connector for thermocouple applications requiring integral cold-junction compensation.
- Confirm terminals 1, 2, 5, and 6 for the selected sensor wiring; terminals 9 and 11 are the output; 13 and 14 are supply.
- PCS45 software and the PCL45 interface are the documented configuration tools.
- Eaton lists MTL4573 as the nearest equivalent; backplane, wiring, configuration, and approval checks remain mandatory.
06Maintenance & Replacement
- Export or record the complete configuration before removing the module.
- Document thermocouple or RTD type, wiring method, range, alarm drive, line frequency, and CJC selection.
- After replacement, simulate at least two input points and verify 4...20 mA scaling and alarm operation.
- Check the correct hazardous-area connector and loop certification.
- Do not copy a standard Type K configuration over an application that uses another sensor or range.
FAQFrequently Asked Questions
Which thermocouples does MTL4073 support?
It supports types J, K, T, E, R, S, B, and N.
Can it accept RTDs?
Yes. It supports two-, three-, and four-wire 100-ohm platinum RTDs.
What output does it provide?
It provides a nominal 4...20 mA output that may be configured for direct or reverse action.
How is the module configured?
Configuration uses PCS45 software with a PCL45 interface.
Does it support sensor-failure drive?
Yes. The safety drive can be configured upscale, downscale, or off.
What is Eaton's nearest equivalent?
Eaton lists MTL4573, with a required review of compatibility and configuration.
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