TMD-21 Programmable temperature transmitter (Modbus-RTU)
Product description
Digital Temperature Transmitter TMD-21
TMD-21 is a modern temperature transmitter designed to work with thermoelectric sensors (thermocouples). It enables precise temperature measurement and easy configuration via the RS-485 interface using the MODBUS-RTU protocol. It can be integrated with any automation system based on the RS-485 bus and Modbus-RTU protocol.
Our transmitter offers, among others:
- compatibility with temperature sensors of types: J, K, N, T, E, S, R, and B
- galvanic isolation of the measurement input from the power supply and RS-485 bus
- high measurement accuracy
- RS-485 interface with MODBUS-RTU communication protocol
- support for up to 247 transmitters on a single bus
- communication status indication (RS LED)
- transmitter status indication (ST LED)
- service mode with fixed transmission parameters: 19200, 8E1
- housing designed for mounting on a 35 mm DIN rail, DIN EN 50022-35
Easy Configuration and Operation
For transmitter configuration, free TMD-CFG software is available for the Windows system, which can be downloaded HERE!
For convenient communication with a computer, we recommend the IF-485U interface connected via USB, providing reliable connection and galvanic isolation between the RS-485 bus and the computer.
Contact us! Our specialists will be happy to help you select the right components for your system. Learn more and order your transmitter today!
Technical data
Measurement Ranges for Different Thermocouple Types
| Sensor Type | Range [°C] | Basic Accuracy |
|---|---|---|
| J (Fe-CuNi) | –210…1200 | ±0.11°C |
| K (NiCr-NiAl) | –200…1372 | ±0.13°C |
| N (NiCrSi-NiSi) | –200…1300 | ±0.1°C |
| T (Cu-CuNi) | –200…400 | ±0.1°C |
| E (Fe-CuNi) | –200…1000 | ±0.15°C |
| S (PtRh10-Pt) | -50…1768 | ±0.2°C |
| R (PtRh13-Pt) | -50…1768 | ±0.2°C |
| B (PtRh30-PtRh6) | +95…1768 | ±0.25°C |
Additional Technical Data
| Cold junction compensation error | ±0.7°C |
| Relative measurement error | < 0.15% |
| Response time | < 20 ms |
| Measurement time | 200 ms |
| Physical layer | RS-485 |
| Communication protocol | MODBUS-RTU |
| Network address | 1 … 247 |
| Baud rate | 9600, 19200, 38400, 57600, 115200 bit/s |
| Transmission parameters | 8E1, 8O1, 8N1, 8N2 |
| Galvanic isolation | 500 V AC |
| Power supply | 12 … 36 V DC / 0.2 W |
| Operating temperature | 0 … +60°C |
| Humidity | < 90% (non-condensing) |
| Dimensions (H × W × D) / weight | 98 × 17.5 × 56.4 mm / approx. 50 g |
Product attachments
280,00 zł
32 in stock (can be backordered)