- Configurable Sensor Input: Thermocouples (J, K, R, S, T, N, E and B), PT100, and 0 to 50 mVdc
- Output: 4-20 mA or 20-4 mA Current, 2-wired; Linear in Relation to the Temperature Measurement by the Selected Sensor
- 1000 Vac Isolation for 1 Minute Between Sensor Input and Output
- Total Accuracy: Maximum Error of 0.3% of Maximum Range for Thermocouples; 0.2% of Maximum Range for Pt100 and Voltage
- Response Time: < 500 ms
- Internal Protection Against Reverse Power Voltage Polarity
- Internal Cold Junction Compensation for Thermocouples
- ABS Enclosure, 44 mm Diameter and 24 mm Maximum Height
TxIsoPack-USB is a fully isolated 4 to 20 mA two-wire loop powered temperature transmitter for in-head assembly. Complete sensor type selection and range configuration is achieved by connecting the device directly to a PC USB port thus not requiring any other interface, special converter or any additional driver. The isolated and linearized current output represents the sensor input signal according to the temperature sensor selected.
Why use isolated transmitters?
Isolated transmitters protect the electrical instruments by eliminating ground loop effects and reduce substantially the undesirable interferences and instabilities in sensor measurements.
Configurable Input
The TxIsoPack can be configured to accept thermocouples (types J, K, T, E, N, R, S and B), PT100 RTDs, 0-50 mVdc
USB Configuration
The TxIsoPack is configured through a USB port using TxConfig software.
| Downloads |
| TxIsoPack-USB Data Sheet |
| TxIsoPack-USB User Manual |
SPECIFICATIONS
Input:
Thermocouples - Types J, K, R, S, T, N, E and B to IEC 60584 (ITS-90). Impedance >> 1 MΩ
pt100 - Types: 2, 3 and 4 wires, Excitation 0.17 mA, α= 0.00385, According to IEC60751 (ITS-90).
Voltage - 0 to 50 mVdc. Impedance >> 1 MΩ
| Sensor Type | Range | Minimum Measurement Span |
| Thermocouple K | -150 to 1370 °C / -238 to 2498 ºF | 100 °C |
| Thermocouple J | -100 to 760 °C / -148 to 1400 ºF | 100 °C |
| Thermocouple R | -50 to 1760 °C / -58 to 3200 ºF | 400 °C |
| Thermocouple S | -50 to 1760 °C / -58 to 3200 ºF | 400 °C |
| Thermocouple T | -160 to 400 °C / -256 to 752 ºF | 100 °C |
| Thermocouple N | -270 to 1300 °C / -454 to 2372 ºF | 100 °C |
| Thermocouple E | -90 to 720 °C / -130 to 1328 ºF | 100 °C |
| Thermocouple B | 500 to 1820 °C / 932 to 3308 °F | 400 °C |
| Pt100 | -200 to 600 °C / -328 to 1112 ºF | 40 °C |
| Voltage | 0 to 50 mV | 5 mV |
Total accuracy: Maximum error 0.3 % of the maximum range for thermocouples, 0.2 % for Pt100 and voltage
Response time: ≤ 500 ms
Isolation: 1000 Vac for 1 minute between input and output.
Output: 4-20 mA or 20-4 mA current, 2-wired; linear in relation to the temperature measurement by the selected sensor.
Resolution: 0.004 mA (12 bits)
Power supply: 12 to 35 Vdc, voltage across the transmitter
Maximum load (RL): RL= (VDC – 12) / 0.02 Ω Were: VDC = Power supply voltage
Operating temperature: -20 to 75 °C
Humidity: 0 to 90 % RH
Electromagnetic compatibility: EN 50081-2, EN 50082-2
Internal protection against the supply voltage polarity inversion.
Cold junction compensation for thermocouples.
ABS box, diameter de 44 mm and max. height 24 mm
5-pin USB mini-B 5 connection cable