| Technical Specifications |
| Analog input |
| Number of channels | One |
| ADC resolution | 20 bits |
| Input ranges | ±73.125 mV, calibrated, ±146.25 mV, not calibrated. Used for open thermocouple detection. |
| Common-mode range | Channel-to-USB ground ±30 V |
| Common-mode rejection ratio (0 to 60 Hz) | Channel-to-USB ground >145 dB |
| Noise rejection | 50/60 Hz >80 dB |
| Temperature measurement ranges | Proper function over the temperature ranges defined by NIST (type J, K, R, S, T, N, E, and B). Type E maximum is 900 ºC. |
| Conversion time | 250 ms |
| Input bandwidth | –3 dB: 1 Hz |
| Differential input impedance | 20 M? between isolated 3.3 V and ground |
| Input noise | 2 µVpp |
| Open thermocouple bias voltage | 3.3 V |
| Cold-junction compensation sensor accuracy | 0 ºC to 65 ºC: 1.25 °C max, 0.6 °C typ |
| Cold-junction compensation sensor resolution | 0.0625 °C typ |
| Overvoltage protection | 30 V max between TC+ and TC– |
| Channel configurations |
| Thermocouple type | J, K, S, R, B, E, T, or N; one differential channel.
Channel configuration information is stored in internal FLASH Program Memory on the microcontroller by the firmware whenever any item is modified.
Modification is performed by commands issued over USB from an external application, and the configuration is non-volatile.
The factory default configuration is undefined ‘#’. |
| Compatible thermocouples |
| Thermocouple | J: –210°C to 1200°C
K: –270°C to 1372°C
R: –50°C to 1768°C
S: –50°C to 1768°C
T: –270°C to 400°C
N: –270°C to 1300°C
E: –270°C to 900°C
B: 0°C to 1820°C |
| LED indicator |
| Steady green | The device is powered and ready for operation. |
| Blinking green | The device is powered, but not yet enumerated by the USB. |
| Off | The device is not powered or is in USB suspend. |
| Power |
| Current consumption from USB | 150 mA maximum, 100 mA typical |
| Suspend current | 2.5 mA maximum |
| Recommended warm-up time | 15 minutes |
| Bus interface |
| USB specification | USB 2.0 Full-Speed |
| Device compatibility | USB 1.1, USB 2.0 |
| Mechanical |
| Dimensions (L × W × H) | 62.56 × 38.10 × 20.32 mm 2.46 in. (L) x 1.50 in. (W) x 0.80 in. (H) |
| Cable Length | 2 meters (6.5 feet) |
| Weight | Approximately 116 g (4.1 oz) |
| Environment |
| Operating temperature range | 0 °C to 55 °C |
| Storage temperature range | –40 °C to 85 °C |
| Operating humidity | 10 to 90% non-condensing |
| Storage humidity | 5 to 95% RH, noncondensing |
| Maximum altitude | 2,000 m (at 25 °C ambient temperature) |
| Pollution degree | 2 |
| The USB-2001-TC | is intended for indoor use only |
