Description
The National Instruments NI-9235 C Series Strain/Bridge Input Module, with part number 785995-01, is designed to accommodate 8 channels, each compatible with 120 Ω Quarter-Bridge strain gages and capable of a high sampling rate of 10 kS/s per channel. Its input range stands at ±29.4 mV/V and it can measure resistance up to 120 Ω.
For safety and reliability, the module boasts an isolation rating of 60 VDC continuous and 1,000 Vrms transient, as well as overvoltage protection that guards against voltages of up to ±30 V between any two terminals. Each channel is equipped with a 24-bit ADC resolution and the entire device is isolated from earth ground, though it should be noted that there is no isolation between channels, as they all connect to a common excitation supply.
The NI-9235 also features built-in excitation supply, ensuring all eight channels are powered adequately, and includes shunt calibration which is made possible through a software-enabled switch with a precision resistor for each individual channel.
| Feature | Specification |
|---|---|
| Part Number | 785995-01 |
| Product Name | National Instruments NI-9235 C Series Strain/Bridge Input Module |
| Number of Channels | 8 |
| Strain Gage Compatibility | 120 Ω Quarter-Bridge |
| Sampling Rate | 10 kS/s/channel |
| Input Range | ±29.4 mV/V |
| Maximum Resistance Measurement | 120 Ω |
| Isolation Rating | 60 VDC continuous, 1,000 Vrms transient |
| Overvoltage Protection | ±30 V between any two terminals |
| Excitation Supply | Built-in, for all eight channels |
| ADC Resolution | 24-bit per channel |
| Ground Isolation | Isolated from earth ground |
| Channel Isolation | No isolation between channels; common excitation supply |
| Shunt Calibration | Software-enabled switch with precision resistor for each channel |
Question 1: What is the isolation rating for the National Instruments NI-9235 C Series Strain/Bridge Input Module, and does it offer channel-to-channel isolation?
Answer 1: The built-in excitation supply on the National Instruments NI-9235 C Series Strain/Bridge Input Module is designed to ensure that all eight channels are adequately powered for accurate measurement of strain or bridge inputs.
Question 2: What safety features are incorporated into the National Instruments NI-9235 C Series Strain/Bridge Input Module to protect it against high voltages?
Answer 2: The safety and reliability of the National Instruments NI-9235 C Series Strain/Bridge Input Module are enhanced by its isolation rating of 60 VDC continuous and 1,000 Vrms transient, overvoltage protection up to ±30 V between any two terminals, and the fact that the entire device is isolated from earth ground. The built-in excitation supply benefits the 8 channels it accommodates by ensuring consistent power is provided to all channels for accurate strain or bridge measurements, and it
Question 3: What is the purpose of the built-in excitation supply on the National Instruments NI-9235 C Series Strain/Bridge Input Module?
Answer 3: The isolation rating for the National Instruments NI-9235 C Series Strain/Bridge Input Module is 60 VDC continuous and 1,000 Vrms transient; however, it does not offer channel-to-channel isolation as all channels connect to a common excitation supply.
Question 4: What are the safety features and specifications of the National Instruments NI-9235 C Series Strain/Bridge Input Module, including its isolation rating and protection measures?
Answer 4: The National Instruments NI-9235 C Series Strain/Bridge Input Module features a safety isolation rating of 60 VDC continuous and 1,000 Vrms transient, and it includes overvoltage protection that can withstand voltages up to ±30 V between any two terminals, ensuring the device is safeguarded against electrical stress and potential damage.
Question 5: What features contribute to the safety and reliability of the National Instruments NI-9235 C Series Strain/Bridge Input Module, and how does its built-in excitation supply benefit the 8 channels it accommodates?
Answer 5: The National Instruments NI-9235 C Series Strain/Bridge Input Module incorporates safety features that include an isolation rating of 60 VDC continuous and 1,000 Vrms transient, as well as overvoltage protection that can withstand voltages of up to ±30 V between any two terminals.
