USB-TC01 Specifications

Definitions

Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty.

Characteristics describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.

Typical specifications describe the performance met by a majority of models.
Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.

Specifications are Typical unless otherwise noted.

Conditions

Specifications are valid at 25 °C unless otherwise noted.

Warm-Up Time

Recommended warm-up time

15 minutes

Input Characteristics

Number of channels	1
ADC resolution	20 bits
Input range	±73.125 mV
Common-mode range, Channel-to-USB ground	±30 V
Common-mode rejection ratio (0 to 60 Hz), Common-to-USB ground	>145 dB
Noise rejection (50/60 Hz)	>80 dB
Temperature measurement ranges	Works over temperature ranges defined by NIST (J, K, R, S, T, N, E, and B thermocouple types; the E type has a maximum limit of 900 °C.)
Conversion time	250 ms
Sample rate	4 S/s, maximum, software-timed
Input bandwidth (-3 dB)	1 Hz
Differential input impedance	20 MΩ between isolated 3.3 V and ground
Input noise	2 µVpp
Open thermocouple bias voltage	3.3 V
Cold-junction compensation sensor accuracy, 0 °C to 65 °C	1.25 °C maximum, 0.6 °C typical
Cold-junction compensation sensor resolution	0.0625 °C typical
Overvoltage protection	30 V max between TC+ and TC-

Note Electromagnetic interference can adversely affect the measurement accuracy of this product. The input terminals of this device are not protected for electromagnetic interference. As a result, this device may experience reduced measurement accuracy or other temporary performance degradation when connected cables are routed in an environment with radiated or conducted radio frequency electromagnetic interference. To limit radiated emissions and to ensure that this device functions within specifications in its operational electromagnetic environment, take precautions when designing, selecting, and installing measurement probes and cables.

Temperature Measurement Accuracy

The following figures show the errors for each thermocouple type when connected to the USB-TC01 . The figures display the maximum errors at 25 °C and over the full operating temperature range, and account for cold-junction compensation errors. The figures were generated using thermocouples connected to subminiature connectors of the same type.

The CJC sensor resolution is 0.0625 °C, which is the minimum value of the CJC step width. As such, the reading may result in a sawtooth curve rather than a square curve as the temperature inside the board changes. This is the expected behavior.

1378 — Figure 1. Temperature Error of Type J Thermocouple

Power Requirements

Current consumption from USB	150 mA maximum, 100 mA typical
Current consumption from USB in suspend mode	2.5 mA maximum

Bus Interface

USB specification

USB 2.0 full speed

Physical Characteristics

Dimensions	62.56 x 38.10 x 20.32 mm (2.463 x 1.5 x 0.8 in.) with a 2 m USB cable
Weight	116 g (4.1 oz), approximate
USB cable length	2 m (6.5 ft)

Safety Voltages

Connect only voltages that are within these limits.

Isolation, channel-to-earth ground, continuous

±30 V max, Measurement Category I

Measurement Category I is for measurements performed on circuits not directly connected to the electrical distribution system referred to as MAINS voltage. MAINS is a hazardous live electrical supply system that powers equipment. This category is for measurements of voltages from specially protected secondary circuits. Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics

Caution Do not use this module for connection to signals or for measurements within Measurement Categories II, III, or IV

Note Measurement Categories CAT I and CAT O (Other) are equivalent. These test and measurement circuits are not intended for direct connection to the MAINS building installations of Measurement Categories CAT II, CAT III, or CAT IV.

Hazardous Locations

This device is not certified for use in hazardous locations.

Environmental

Operating temperature (IEC 60068-2-1 and IEC 60068-2-2)	0 °C to 55 °C
Storage temperature (IEC 60068-2-1 and IEC 60068-2-2)	-40 °C to 85 °C
Operating humidity (IEC 60068-2-56)	10% to 90% RH, noncondensing
Storage humidity (IEC 60068-2-56)	5% to 95% RH, noncondensing
Maximum altitude	2,000 m (at 25 °C ambient temperature)
Pollution Degree (IEC 60664)	2

Indoor use only.

Safety Compliance Standards

This product is designed to meet the requirements of the following electrical equipment safety standards for measurement, control, and laboratory use:

IEC 61010-1, EN 61010-1
UL 61010-1, CSA C22.2 No. 61010-1

Note For safety certifications, refer to the product label or the Product Certifications and Declarations section.

Electromagnetic Compatibility

CE Compliance

This product meets the essential requirements of applicable European Directives, as follows:

2014/35/EU; Low-Voltage Directive (safety)
2014/30/EU; Electromagnetic Compatibility Directive (EMC)
2011/65/EU; Restriction of Hazardous Substances (RoHS)
2014/53/EU; Radio Equipment Directive (RED)
2014/34/EU; Potentially Explosive Atmospheres (ATEX)

Product Certifications and Declarations

Refer to the product Declaration of Conformity (DoC) for additional regulatory compliance information. To obtain product certifications and the DoC for NI products, visit ni.com/product-certifications, search by model number, and click the appropriate link.

Environmental Management

NI is committed to designing and manufacturing products in an environmentally responsible manner. NI recognizes that eliminating certain hazardous substances from our products is beneficial to the environment and to NI customers.

For additional environmental information, refer to the Engineering a Healthy Planet web page at ni.com/environment. This page contains the environmental regulations and directives with which NI complies, as well as other environmental information not included in this document.

EU and UK Customers

Waste Electrical and Electronic Equipment (WEEE)—At the end of the product life cycle, all NI products must be disposed of according to local laws and regulations. For more information about how to recycle NI products in your region, visit ni.com/environment/weee.

电子信息产品污染控制管理办法（中国RoHS）

中国RoHS— NI符合中国电子信息产品中限制使用某些有害物质指令(RoHS)。关于NI中国RoHS合规性信息，请登录 ni.com/environment/rohs_china。(For information about China RoHS compliance, go to ni.com/environment/rohs_china.)