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SMT-4PT IMO iSmart Expansion Unit, Power – 24VDC,
IMO SMT-4PT is a 24 V DC iSmart expansion module providing four 12-bit PT100 temperature inputs with a -100 to +600 °C measurement range for industrial temperature monitoring and control.
£190.10
Why Choose the IMO SMT-4PT iSmart PT100 Temperature Input Module?
The IMO SMT-4PT is a compact four-channel PT100 temperature input expansion module designed for the IMO iSmart programmable relay platform. It allows a compatible iSmart controller to monitor up to four PT100 resistance temperature detectors, providing accurate temperature measurement for industrial machinery, process control, HVAC and building automation applications.
As part of the IMO iSmart expansion module range, the SMT-4PT operates from a 24 V DC supply and provides four 12-bit PT100 temperature input channels. The module measures temperatures across a wide -100 to +600 °C range, allowing a single compact controller to monitor several temperature points within a machine or process.
With a temperature resolution of 0.1 °C and specified accuracy of ±1%, the SMT-4PT provides practical temperature monitoring for automation applications. Each input is assigned to a dedicated temperature register within the iSmart controller, while individual channel error indication assists with identifying wiring faults, disconnected sensors and out-of-range conditions.
Key Advantages
- Adds four PT100 temperature inputs to compatible IMO iSmart controllers.
- Wide -100 to +600 °C temperature measurement range.
- 0.1 °C temperature resolution for detailed process monitoring.
- 12-bit temperature input architecture for industrial measurement applications.
- Individual channel error indication helps identify sensor and wiring problems.
- 24 V DC supply compatible with standard industrial control systems.
- Compact expansion format simplifies installation within control panels.
- Suitable for machinery, HVAC, process control and temperature monitoring systems.
Key Features
- IMO iSmart PT100 temperature input expansion module.
- Four PT100 input channels.
- 12-bit temperature inputs.
- -100 to +600 °C measurement range.
- 0.1 °C resolution.
- ±1% specified accuracy.
- 24 V DC operating supply.
- 55 mA current consumption.
- 1.32 W power consumption.
- Dedicated AT01 to AT04 temperature registers.
- Individual error indication for all four temperature channels.
- Compatible with IMO iSmart programmable relay expansion systems.
Reliable PT100 Temperature Monitoring for iSmart Automation
PT100 resistance temperature detectors are widely used in industrial automation because their resistance changes predictably with temperature. The IMO SMT-4PT converts signals from up to four PT100 sensors into temperature values that can be processed directly by the connected iSmart controller, allowing temperature conditions to form part of the machine or process control logic.
The SMT-4PT also provides diagnostic support for each temperature channel. If an input is out of range because of incorrect wiring or a missing sensor, the corresponding channel is not updated and its dedicated error coil is activated. This functionality helps engineers incorporate sensor fault detection into automated control and alarm sequences.
Typical Applications
- Industrial temperature monitoring and control.
- Heating and cooling equipment.
- HVAC and building automation systems.
- Process temperature monitoring.
- Machine building and OEM equipment.
- Production and manufacturing machinery.
- Tank and vessel temperature monitoring.
- IMO iSmart automation system expansion.
Technical Specifications
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| Signal / Input Range | 24 V DC | |
|---|---|---|
| Product Series | IMO i3 | |
| Device Type | Analogue I/O Module | |
| Signal Type / Function | Temperature (RTD/TC) | |
| Coil / Supply Voltage | 24 V DC | |
| IP Rating | IP20 | |
| Manufacturer | IMO Precision Controls | |
| Series | iSmart | |
| Model | SMT-4PT | |
| Product type | PT100 temperature input expansion module | |
| Supply voltage | 24 V DC | |
| Number of temperature inputs | 4 | |
| Sensor type | PT100 RTD | |
| Input resolution | 12-bit | |
| Temperature input range | -100 to +600 °C | |
| Temperature resolution | 0.1 °C | |
| Accuracy | ±1% | |
| RTD excitation current | 0.33 mA | |
| Current consumption | 55 mA | |
| Power consumption | 1.32 W | |
| Temperature registers | AT01–AT04 | |
| Maximum SMT-4PT modules per base unit | 1 | |
| Protection rating | IP20 | |
| Mounting type | 35 mm DIN rail / direct mounting | |
| HS Code | 8537109199 | |
| Country of Manufacture | China |
Frequently Asked Questions
What is the IMO SMT-4PT used for?
The SMT-4PT is a four-channel PT100 temperature input expansion module used with compatible IMO iSmart programmable relays to monitor temperatures in industrial machinery and automation systems.
How many PT100 sensors can the SMT-4PT monitor?
The IMO SMT-4PT provides four PT100 temperature input channels, allowing up to four compatible temperature sensors to be monitored.
What temperature range does the SMT-4PT support?
The SMT-4PT supports a temperature measurement range of -100 to +600 °C with a resolution of 0.1 °C.
What power supply does the IMO SMT-4PT require?
The SMT-4PT operates from a 24 V DC supply and has a specified current consumption of 55 mA.
Does the SMT-4PT detect PT100 sensor or wiring faults?
Yes. If a channel is out of range because of a wiring error or missing input, the module provides a dedicated error indication for the affected channel, allowing the condition to be detected by the iSmart control program.
Flexible Temperature Monitoring from IMO Precision Controls
IMO iSmart expansion modules provide a practical way to extend compact programmable relay systems, with the SMT-4PT adding four PT100 temperature inputs for machinery, process, HVAC and industrial temperature monitoring applications.
