The iTCMM mini-multipoint thermocouple probe is a Type K device capable of providing up to 30 measurement points within a 6 mm diameter probe sheath.
Fine chemical reaction processes often utilize shell-and-tube reactors (fixed-bed reactors); the internal space within the reactor tubes is confined, yet a high number of measurement points is required to ensure comprehensive monitoring. The mini-multipoint thermocouple offered by Sino-Inst ensures a complete profile of the internal reaction temperature within these reactors.
| Product Name | Miniature Multipoint Thermocouple Sensor |
| Model Specification | iTCMM |
| Sensor Type | Type K |
| Single/Dual Element / Number of Measuring Points | Single assembly / 5 points / 6–30 points (user-specified) |
| Accuracy Standard | CL1 (IEC) |
| Measurement Accuracy | ±1.5°C |
| Probe Structure | Sheathed |
| Probe Outer Diameter | 1/8 inch, or specified by the user |
| Temperature Sensing Point Location | 1600 / 1710 / 1820 / 1930 / 2040 mm / User-specified lengths |
| Temperature Measurement Range | 0–450°C |
| Protection Tube Material | 316L |
| Process Connection | Plain stem, User-specified thread or flange |
| Response Time | 6 s |
| Ingress Protection Rating | IP65 |
| Explosion-proof Rating | Ex ia IIC T4 Ga |
Code sequence: iTCMM – Explosion protection – Process connection – Thermocouple type – Number of points – Probe diameter D – Accuracy – Probe material – Insertion length L – Flexible conduit – Lead length – Extension wire – Termination
| Position | Code | Description |
| Product type | iTCMM | Mini multipoint thermocouple |
| Explosion protection | O | General purpose, non-explosion-proof |
| I | Intrinsically safe | |
| Process connection | H | Plain stem, no thread |
| I | Compression fitting, 1/2 NPT | |
| Q | Compression fitting, 1/4 NPT | |
| R | Compression fitting, G1/2B | |
| U | Compression fitting, M20×1.5 | |
| V | Compression fitting, M27×2 | |
| W | Flange connection (flange standard + size) | |
| X | Other | |
| Thermocouple type | 1K | Type K, single element — default |
| 1J | Type J, single element | |
| 1E | Type E, single element | |
| 1T | Type T, single element | |
| X | Other | |
| Number of measuring points | n (pcs) XX | Specify quantity |
| Probe diameter D | 6 | 6 mm — default |
| 8 | 8 mm | |
| 5 | 5 mm | |
| 3 | 3 mm | |
| X | Other | |
| Accuracy | CL1 | IEC Class 1 — default |
| CL2 | IEC Class 2 | |
| Probe material | R | 316 SS — default |
| P | 304 SS | |
| J1 | Inconel 600 | |
| Q | 310 | |
| Insertion length L | L1 / L2 / L3 … Ln | = XXXX mm each |
| Flexible conduit | NSR | Without flexible conduit |
| BSR | Flexible conduit, without plastic jacket | |
| SR | Flexible conduit, plastic-jacketed | |
| Lead length | XXXX mm | Specify length |
| Extension wire material & construction | P | PFA / PFA — default |
| PS | PFA / PFA, shielded | |
| FB | Fiberglass / fiberglass | |
| FBS | Fiberglass / fiberglass, shielded | |
| X | Other | |
| Termination | PL | No terminal — default |
| Y | Y-type terminal | |
| EJB | Junction box | |
| SF | Standard flat plug + jack | |
| SFP | Standard flat plug | |
| SFJ | Standard flat jack | |
| MF | Miniature flat plug + jack | |
| MFP | Miniature flat plug | |
| MFJ | Miniature flat jack | |
| X | Other |
Insertion length notes:
Multi-point flexible thermocouples are used in fixed-bed reactors within the petrochemical and nuclear power industries. They provide precise, stratified temperature measurement, withstand high-temperature operating conditions, and ensure stable readings. Common applications include:
Project Case
Project: Debris Bed Melt Test Experiment
Product: iTCMM Mini Multi-point Thermocouple
Feedback: Consistently stable operation and precise measurement
Reference Customization Drawing:
Zhang Wei, possesses 20 years of experience as an automation instrumentation engineer, specializing in the research, design, installation, commissioning, and maintenance of automation instruments.
Face to various instrument communication protocols (such as Modbus, Profibus, etc.), with solid hardware circuit design and software programming skills (proficient in C language and PLC programming). Has extensive project experience; projects he has led and participated in have all achieved outstanding results, improving product accuracy, reducing costs, and increasing production efficiency.
Possesses excellent communication and coordination skills and a strong team spirit, enabling him to quickly respond to customer needs and provide high-quality automation instrumentation solutions.
