Monday, February 20, 2023 · 0 min read
New DSI Adapters for Thermocouple Type E and Current Measurement
We are announcing the release of the new DSI adapters:
DSI-TH-E: Thermocouple type E adapter for temperature measurement
DSI-5A: Revised current measurement adapter up to 5A
The versatile Dewesoft DSI® adapters convert any Dewesoft's DAQ system analog input amplifiers with DSUB9 connector into a universal analog input that can accept everything from strain gage, IEPE/ICP, thermocouple, LVDT, RTD, current to voltage signals with up to ±200V.
DSI adapters are automatically recognized by the TEDS sensor chip (IEEE 1451.4) and all settings are configured automatically inside Dewesoft X DAQ software.
DSI-TH-E - thermocouple type E adapter for temperature measurement
DSI-TH-E is the latest edition to the DSI® thermocouple adapters product range. DSI-TH-E is designed for type E thermocouple.
Type E thermocouple has the highest sensitivity in terms of mV/K. It is operating in a temperature range between -270 °C and 1000 °C.
Host amplifier configuration and calibration coefficients can be read via TEDS.
Host amplifier compatibility and specs
DSI-TH-E for thermocouple type E (DIN EN 60584-1)
| DAQ hardware | SIRIUS LVSIRIUS STGSIRIUS HD-STGS | SIRIUSi XHS-LVKRYPTONi STGIOLITE STG | SIRIUS STGMMINITAURs | DEWE-43ASIRIUSi HD-LV | SIRIUSi HS-LV | SIRIUSi HS-STG | SIRIUSi MULTI | |
| Input Range | Actual reading | Typical accuracy [maximum accuracy] | ||||||
| -270 to 1000 °C | -250 to -200 °C | ±2.3 [±10.2] °C | ±6.5 [±11.8] °C | ±3.2 [±10.2] °C | ±5.8 [±10.2] °C | ±1.7 [±11.8] °C | ±1.7 [±5.6] °C | ±3.2 [±19.0] °C |
| -200 to -100 °C | ±1.5 [±5.0] °C | ±3.4 [±5.6] °C | ±1.9 [±5.0] °C | ±3.1 [±5.0] °C | ±1.3 [±5.6] °C | ±1.3 [±3.0] °C | ±1.9 [±8.7] °C | |
| -100 to 0 °C | ±1.3 [±3.2] °C | ±2.3 [±3.6] °C | ±1.5 [±3.2] °C | ±2.1 [±3.2] °C | ±1.1 [±3.6] °C | ±1.1 [±2.1] °C | ±1.5 [±5.4] °C | |
| 0 to 500 °C | ±1.3 [±2.4] °C | ±1.9 [±2.6] °C | ±1.4 [±2.4] °C | ±1.8 [±2.4] °C | ±1.2 [±2.6] °C | ±1.2 [±1.7] °C | ±1.4 [±3.7] °C | |
| 500 to 1000 °C | ±1.6 [±2.8] °C | ±2.1 [±2.9] °C | ±1.8 [±2.8] °C | ±2.2 [±2.8] °C | ±1.4 [±2.9] °C | ±1.4 [±2.0] °C | ±1.8 [±4.2] °C |
DSI-5A - current measurement adapter
Same on the outside, new on the inside. DSI-5A v2 is the new version of DSI® adapters allowing current measurements up to 5 A.
The motivation for the new version was the discontinuation of the shunt resistor.
DSI-5A v2 still contains a 10 mΩ shunt resistor with 0.1% accuracy when calibrated. Significant improvement is in temperature stability. The new shunt resistor has two-times better temperature coefficient (now 15 ppm/K over the range -55 °C to +125 °C, before 30 ppm/K over the range -20 °C to +60 °C).
Input connector of the DSI-5A adapter is the same 3-pin screw terminal where you can connect wires with the nominal cross-section up to 2.5 mm².
Host amplifier configuration and calibration coefficients can be read via TEDS.
DSI-5A connector pinout
| Pin | Name | Description |
|---|---|---|
| 1 | IN + | Current Input - |
| 2 | IN - | Current Input + |
| 3 | GND | Analog ground |
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