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Monday, February 27, 2023 · 0 min read

New DSI Adapters: Universal Thermocouple, Waterproof Current Shunt, and IEPE Adapters

Dewesoft is introducing 3 new DSI adapters compatible with Dewesoft data acquisition systems:

  • DSI-TH-UNI: Universal thermocouple adapter

  • DSI-ACC-0.16Hz-20mA: IEPE/ICP adapter

  • DSIw-20mA: Waterproof IP67 current shunt adapter

DSI-TH-UNI: universal thermocouple adapter

This new DSI adapter for thermocouple sensors features a universal thermocouple input. It allows it to connect practically any type of thermocouple sensors - K, J, T, R, S, N, E, B, C.

DSI TH UNI

DSI-TH-UNI has integrated cold junction compensation with CJC accuracy of 0.5 °C.

Universal thermocouple DSI adapter comes in an attractive compact chassis-mounted directly on the host amplifier without any additional cable.

Host amplifier configuration and calibration coefficients can be read via the TEDS sensor interface.

General specifications
Sensor connectorMini thermocouple, female
Thermocouple TypesK, J, T, R, S, N, E, B, C
Cold junction compensationIntegrated
CJC accuracy0.5 °C
Input impedance> 10 MΩ
BIAS current50 nA
Open TC detectionYES
LinearisationThrough software according to the sensor type
TEDSFor adapter identification and calibration data
Dimensions52 x 31 x 15 mm (61 x 31 x 15 mm with screws)
Weight40 g

DSI-ACC-0.16Hz-20mA: IEPE/ICP® adapter

DSI-ACC-0.16Hz-20mA is the new DSI adapter for IEPE/ICP® signal inputs.

DSI ACC 0.16 Hz 20 mA

The adapter combines features of existing DSI-ACC adapters with an increased time constant (𝜏 = 1 s, high-pass filter 0.16 Hz) and sensor excitation (20 mA).

DSI-ACC-0.16Hz-20mA is supported only with the following host amplifiers: SIRIUS LV/LV+, STG/STG+, HS-LV/HS-LV+, HS-STG/HS-STG+.

Inputs specifications
Sensor connectorBNC
Supported sensorsIEPE / ICP
Amplifier settingsAutomatically selected by software- Measurement: Voltage- Range: ±0.1 V to ±10 V- Excitation: 10 V
Adapter specification
Sensor excitation20 mA ±15 %
Compliance voltage> 20 Volt
Accuracy 30 Hz to 30 kHz0.07 %
High pass filter0.16 Hz
Power consumption800 mW
Supported Amplifiers (exceptions)Only on: SIRIUS LV/LV+, STG/STG+, HS-LV/HS-LV+, HS-STG/HS-STG+
Gain drift50 ppm/°C
Max. input offset12 mV
Input impedance1 MΩ
Supply voltage±5 V (±1 %)
Input configurationIsolated (max. 350 VDC) when using with isolated SIRIUSi modules, else single-ended
Bandwidthup to 500 kHz (limited by the bandwidth of host amplifier)
Low-pass filter10 Hz to 100 kHz (depending on host amplifier)
Ranges100 mV, 1000 mV, 10000 mV (SIRIUS-HS series offers more ranges)
Typical SNR @ 30 kHz bandwidth
10000 mVup to 125 dB (limited by the SNR of the host amplifier)
1000 mVup to 110 dB (limited by the SNR of the host amplifier)

DSIw-20mA: waterproof IP67 current shunt adapter

DSIw-20mA is a waterproof DSI adapter for current measurement with up to 20mA.

DSI2 20 mA

It uses a 50 Ω shunt resistor with 0.01 % accuracy and 0.2 ppm/K temperature drift (0.05 ppm/K in the temperature range 0 °C to 60 °C).

This is a product made for sensing current from industrial sensors with 4-20 mA output in harsh environments.  It is designed with a double DSUB9 adapter hood (IP67 rating).

DSIw-20mA is suited for mounting on a SIRIUSwe or KRYPTON STG.

Inputs specifications
Input connector typeWaterproof DSUB9 female connector
Input range20 mA
Shunt Resistor50 Ω, Metal Foil
Input accuracyCalibrated to ±0.01 %, calibration in TEDS(uncalibrated ±0.05 %)
Temperature Coefficient±0.05 ppm/°C typical (0 °C to +60 °C)±0.2 ppm/°C typical (-55 °C to +125 °C)
Power Rating250 mW (do NOT exceed maximum rating!)
TEDS1024-bit, 1-Wire EEPROM
Environmental ratingIP67

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