掌上型静电电压表TREK 520 特价出售

手持式静电电压测试仪
特点: 
TRE-520:0~±2KVDC
TRE-523:0~±20KVDC
精准度±5%, 具备Hold功能
应用: 人体或对象表面静面量测试，主要用于厂内静电产生情况的抽检
Model 520 Series HAND-HELD Electrostatic Voltmeter
The Model 520 Series includes the Model 520 and Model 523.
The Trek Model 520 Hand-Held Electrostatic Voltmeter (ESVM) 
Series products provide accurate, noncontacting measurements 
of electrostatic surface voltage for ESD applications in 
either ionized or non-ionized environments. Industrial 
applications include measuring charge accumulation in the
 LCD manufacturing process or measuring static charge in 
semiconductor production. The Model 520 series ESVMs utilize
 a new measurement technique that overcomes the disadvantage 
of the typical hand-held fieldmeter by providing surface 
voltage measurements which are essentially independent of the
 sensor probe-to-measured surface spacing.
Model 520-1 ESVM 
Over a spacing range of 5 mm to 25 mm, the 520 voltmeter 
provides better than a 5% voltage measurement accuracy, while 
the typical fieldmeter provides a voltage measurement error in
 excess of 50%. An optional voltage monitor output is available
 (Model 520-2).  
Model 523 ESVM
Over a spacing range of 30 mm to 60 mm, the 523 voltmeter 
provides greater than a 5% voltage measurement accuracy, 
while the typical fieldmeter provides a voltage measurement
 error in excess of 50%.  
The 520 series provides a measurement system which complies 
with standardized calibration equipment traceable to the 
National Institute of Standards and Technology. The 520 series
 hand-held voltmeters employ a slender sensor probe design 
that provides flexibility to make measurements in many 
locations which are impossible to reach using the large, 
bulky sensing surfaces of the typical hand-held fieldmeter. 
The slender design also allows for higher spatial resolution 
capability by allowing the measurement of small surface areas.
 A "hold" pushbutton retains the displayed measured voltage 
value for recording purposes.
?Model 520 Measurement Range  
0 to ±2 kV DC. 
Model 523 Measurement Range  
0 to ±20 kV DC. 
Model 520 Accuracy  
ESVM Monitor (Model 520-2)  
Better than ±5% of full scale over the entire recommended 
probe-to-surface separation range of 5 mm to 25 mm. 
Model 523 Accuracy  
Better than ±5% of full scale over the entire recommended 
probe-to-surface separation range of 30 mm to 60 mm. 
Model 520 Probe-to-Surface Separation (recommended) 
5 mm to 25 mm. 
Model 523 Probe-to-Surface Separation (recommended) 
30 mm to 60 mm.
Stability  
Drift with Time  
Less than 600 ppm/hour, noncumulative. 
Drift with Temperature  
Less than 600 ppm/°C.
参数
 Trek Model 520/523/P0876A/P0884A手持式静电电压表可以实现高精度非接触表面静电电压测量,并且不受探头到被测表面距离及离子风影响.
测量范围：0~±2KV
测量精度：±5%（满量程）
探头到被测表面距离：5~25mm