FAQ
Frequently asked questions
Answers to common questions about using our products
Question:
Why do Hall-effect sensors from other brands exhibit phase errors and data-acquisition noise during the data-collection process? Does this phenomenon occur with our company’s sensors as well?
Answer:
Because Hall-effect sensors have long response times, unstable zero points, significant temperature drift, and output measurements that are easily affected by temperature, their accuracy is low.
Our company’s sensors are fluxgate sensors, which offer real-time response, stable zero points, virtually no temperature drift, and high accuracy; therefore, this issue does not occur.
Question:
Do high-flow sensors and test instrument standard meters need to be inspected annually?
Answer:
In general, current sensors do not require annual verification; test instruments and standard meters may be subject to annual verification in accordance with industry regulations or local standards.
Question:
Does the current sensor come with a third-party metrology test report upon shipment?
Answer:
Current sensors undergo comprehensive factory testing, and a factory test report can be provided.
Our company can undertake metrological testing on behalf of clients at a third-party facility; alternatively, we can arrange for the client to have the devices tested by a third-party laboratory of their choice. Metrological testing fees are borne by the client.
Question:
What are the power supply requirements for the current sensor?
Answer:
Sensor power supplies are available in ±15V, ±24V, ±32V, ±48V, and ±60V configurations; among these, the CTC/CTD series, 1500A/2000A, offers two versions: one with ±24V power supply and another with ±15V power supply.
Our company provides PSU power supplies that meet all of the above voltage requirements and can be custom-integrated with current-conditioning modules within the power supply itself, simplifying wiring and facilitating on-site use.
Question:
Does customizing the output to voltage affect the sensor’s accuracy?
Answer:
Voltage output is obtained by converting a current signal. Although our company uses high-precision, low-resistance, low-temperature-drift resistors and performs signal optimization, the conversion accuracy will still decrease to some extent.
Taking the CTB series 100A range sensors as an example, the CTB-100 is a current-output sensor with a nominal accuracy of 10ppm; the CTB-100V is a voltage-output sensor with a nominal accuracy of 30ppm.
Question:
If a voltage-output type is required, is that acceptable? What is the solution?
Answer:
The CTB, CTW, and CTF series current sensors all offer corresponding voltage-output models; among these, the CTF voltage-output models provide both current and voltage outputs.
Other series of current sensors can be paired with our company’s IV converters to deliver high-precision voltage signals.
The IV converter can be integrated into a PSU power supply, simplifying wiring and facilitating on-site use; alternatively, it can also be used as a standalone module in conjunction with the sensor.