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Technical Insights

Selection guides · Technical sharing · Industry insights

USB示波器PicoScope示波器选型

When buying a USB oscilloscope, which comes first: bandwidth or resolution? Common pitfalls for engineers when selecting models

The selection of a USB oscilloscope is often hindered by two factors: bandwidth and vertical resolution. This article, based on real-life debugging scenarios encountered by engineers, clarifies the respective impacts of these two factors, helping you allocate your budget effectively and efficiently.

QN Technology Technical Team
露点变送器压缩空气EE355

Is the dew point of compressed air repeatedly exceeding the standard? How can the EE355 dew point transmitter maintain a temperature range of ±2 °C around -60 °C

Frequent compressed air dew point alarms often stem from the selection of measurement points rather than insufficient capacity of the dryer. Based on the sample parameters of E+E Elektronik EE355, we will break down the four key selection points: dew point range, reference pressure, output protocol, and installation location.

QN Technology Technical Team
直流电源Aim-TTi电源选型

When purchasing desktop DC power supplies, these parameters hide hidden costs

On the quotation sheet for benchtop DC power supplies, voltage and current are just the surface features. Ripple noise, load regulation, remote interface, and protection mechanisms often determine your subsequent hidden expenses. From the perspective of procurement insiders, let's discuss how to allocate your budget to areas that truly affect test results.

QN Technology Technical Team
振动传感器加速度传感器预测性维护

Is the vibration sensor reading fluctuating erratically? Follow these 4 steps to locate grounding and resonance issues

Is there a sudden change in the readings of the Wilcoxon PC420 series vibration sensor in the field? This article presents a four-step troubleshooting method, covering power supply circuit, grounding shielding, installation resonance, and comparative verification, to quickly identify grounding and resonance issues and reduce equipment downtime.

QN Technology Technical Team
温湿度变送器洁净室温湿度RFTM

Is the humidity in the clean room frequently exceeding the limit? First, verify these six parameters of the temperature and humidity transmitter

The frequent alarms of temperature and humidity in clean rooms are mostly due to incorrect selection of measurement range, accuracy reference conditions, and output protocol during the selection phase. Based on the sample parameters of the S+S Regeltechnik RFTM and AFTF series, we will break down six selection indicators and three typical configuration combinations.

QN Technology Technical Team
温度记录仪冷链验证GSP

Did you select the wrong temperature recorder for GSP verification? Make sure to calculate these 8 parameters carefully before placing your order

The requirements for temperature recorders in the pharmaceutical and food cold chain, as well as GSP verification, are not solely about achieving accurate measurements at a single point. Instead, they hinge on whether the measurement range margin, sampling interval, number of storage points, and calibration certificate can form a closed loop. This article dissects the selection criteria and parameter calculation methods for the MadgeTech Temp1000IS and HiTemp140.

QN Technology Technical Team
重载连接器Han连接器连接器选型

How to calculate the current-carrying and mating life of heavy-duty connectors to avoid failures

The selection of heavy-duty connectors is often hindered by three factors: current derating, insertion and extraction lifespan, and protection level. This article provides a current calculation method, lifespan evaluation dimensions, and parameter comparisons for the Han® series, helping engineers avoid on-site failures.

QN Technology Technical Team
绝对值编码器增量编码器编码器选型

"Power off and lose position, power on and return to zero? When selecting absolute or incremental encoders, consider these five key differences first."

After the incremental encoder is powered off, its position resets to zero, and it needs to return to zero every time it is powered on, posing downtime and safety hazards in long-stroke and multi-axis scenarios. The Fenac FNC series absolute value encoder maintains its position during power-off in single/multiple turns and supports SSI/BISS/Profibus/CANopen interfaces, eliminating the need for returning to zero. This article uses a comparative table to clarify the differences in returning to zero, power-off memory, anti-interference, accuracy, and cost.

QN Technology Technical Team
位移传感器电感式位移传感器涡流传感器

Struggling with positioning accuracy issues? Selection and error control of internal parameters for inductive (eddy current) displacement sensors

Machine tools, hydraulic systems, and injection molding production lines often experience positioning drift due to wear from contact measurement or interference from oil contamination. This article delves into the working principle, key parameters, and selection logic of esitron inductive (eddy current) displacement sensors, aiming to assist engineers in mastering the key points of error control in non-contact measurement.

QN Technology Technical Team