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OM-USB-TC-Series
8-Channel Thermocouple/Voltage Input USB Data Acquisition Modules
This item is discontinued. Please contact Engineering for alternatives or questions
- OM-USB-TC and OM-USB-5201 Have 8 Thermocouples Inputs
- OM-USB-TC-AI Has 4 Thermocouple Inputs and 4 Analog Voltage Inputs
- OM-USB-5201 Has Data Logging Capability (Compact Flash)
- 24-Bit Resolution
OM-USB-TC-Series
From
TWD
20,808
Product Overview
- Accuracy ± 0.25 °C
- Configuration Parameters Pull-Up/Down Configuration, User-Configurable Input/Output
- Data Interface USB 1.1, USB 2.0
- Digital Input Digital: Low = –0.5 to 0.8 Vdc
- Electrical Connection Screw Terminal
- Frequency Input Range 1 MHz
- Height 36 mm
- Input Configuration Connected Software
- Input Type Note Thermocouple: J, K, T, E, R, S, B, N
- Input Voltage Note Absolute Maximum Input Voltage: Thermocouple Inputs; ±25V (Power On), ±40V (Power Off): Voltage Inputs; ±25V (Power On), ±15V (Power Off)
- Isolation Power Isolation: 500 Vdc minimum measurement system to PC, Input Isolation: 500 Vdc min between field wiring and USB interface
- Length 127 mm
- Operating Temperature, Max 50 °C
- Operating Temperature, Min 0 °C
- Pull-down Resistor GND
- Pull-up Resistor 47 kΩ
- Relative Humidity 0 to 90% RH non-condensing
- Sampling Rate 2 Hz (2 updates/second)
- Series ID OM-USB-TC-Series
- Storage Temperature, Max 85 °C
- Storage Temperature, Min -40 °C
- Supply Voltage 5 Vdc
- USB Cable Length 3 m
- Warm Up Time 30 min
- Weight 182 g
- Width 89 mm
- Wire Gauge 30 to 16 AWG
Supported Applications
The Omega OM-USB-TC Series comprises USB 2.0 full-speed data acquisition modules designed for thermocouple and analog voltage input measurements in Microsoft® Windows® environments. The series includes the OM-USB-TC, which provides eight differential thermocouple inputs; the OM-USB-TC-AI, configured with four differential thermocouple inputs and four differential or single-ended voltage inputs; and the OM-USB-5201, an 8-channel thermocouple module featuring integrated data logging via CompactFlash. These standalone, plug-and-play modules support Type J, K, R, S, T, N, E, and B thermocouples.
Operating Conditions & Performance
The series operates within an ambient temperature range of 0 to 50°C (32 to 122°F) with a humidity rating of 0 to 90% RH non-condensing. Storage conditions are specified as -40 to 85°C (-40 to 185°F). The modules feature 24-bit resolution and require a warm-up time of 30 minutes maximum for optimal performance.
Measurement ranges vary by thermocouple type:
- Type J: -210 to 1200°C (-346 to 2192°F)
- Type K: -210 to 1372°C (-346 to 2502°F)
- Type T: -200 to 400°C (-328 to 752°F)
- Type E: -200 to 1000°C (-328 to 1832°F)
- Type R and S: -50 to 1768°C (-58 to 3214°F)
- Type B: 250 to 1820°C (482 to 3308°F)
- Type N: -200 to 1300°C (-328 to 2372°F)
The OM-USB-TC-AI model supports analog voltage inputs with ranges of ±10V, ±5V, ±2.5V, and ±1.25V.
Configuration Options
The series offers configurable input types, data logging options, and digital I/O capabilities across its models:
- Sensor Inputs: Supports 8 differential thermocouple channels (OM-USB-TC, OM-USB-5201) or a mix of 4 thermocouple and 4 voltage inputs (OM-USB-TC-AI).
- Digital I/O: All models include eight independent, TTL-compatible digital input/output channels that are software programmable.
- Data Logging: The OM-USB-5201 includes a 512 MB CompactFlash card for standalone logging at intervals from 1 second up to 2^32 seconds. Data logging requires the module to be disconnected from the computer and powered by an external AC adapter.
- Counter Input: The OM-USB-TC-AI includes a single event counter with TTL, rising edge triggered input (up to 1 MHz frequency).
- Cold Junction Compensation: Integrated CJC sensors provide accuracy of ±0.25°C typical and ±0.5°C max at 15 to 35°C.
The modules feature screw terminal blocks accepting 16 to 30 AWG wire, with input isolation rated at a minimum of 500 Vdc between field wiring and the USB interface.
Key Product Differences
Differences among series members are defined by channel configuration and data logging capability:
- OM-USB-TC: An 8-channel thermocouple input module powered solely via the USB port.
- OM-USB-TC-AI: A hybrid model with four thermocouple inputs and four analog voltage inputs. It also includes a counter output feature not present in other models.
- OM-USB-5201: An 8-channel thermocouple module equipped for data logging via CompactFlash, requiring an external AC adapter (included) when operating independently of the USB host power.
The OM-USB-TC and OM-USB-TC-AI weigh 182 g (6.4 oz), while the OM-USB-5201 weighs 227 g (8.0 oz). All models utilize a plastic housing with dimensions of 127 L x 89 W x 36 mm H (5.0 x 3.5 x 1.4").
PDFs & Manuals
Software & Drivers
