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JCI140靜電測(cè)試儀Static Monitor靜電電位電量
2檔電位量程: 2kV, 20kV (JCI-140/140F); 20kV, 200kV (JCI-140XF)
2檔電量量程: 2nC, 20nC (JCI-140/140F); 20nC, 200nC (JCI-140XF)
分辨率: 1V (2kV量程), 10V (20kV量程)
測(cè)試距離: 100mm
測(cè)量精度: +/-2% FSD
可測(cè)試連續(xù)變換電壓
信號(hào)輸出萬(wàn)用表, 可測(cè)試50/60Hz交流電場(chǎng)
3 1/2LCD液晶顯示, 低電池指示
純鋁外殼, 有效屏蔽外部信號(hào)干擾
尺寸: 150*66*34mm, 320g

品牌: JCI
制造商: Chilworth Technology Ltd
產(chǎn)地: 英國(guó)

訂購(gòu)編號(hào):     描述:
JCI-140     標(biāo)準(zhǔn)型, 頻率響應(yīng): -3dB@120Hz
JCI-140F     快速型, 頻率響應(yīng): -3dB@400Hz
JCI-140XF     快速大量程型, 頻率響應(yīng): -3dB@400Hz
量程: 20kV; 200kV

選配:      
JCI-148     轉(zhuǎn)換探頭, 接觸式測(cè)量導(dǎo)體靜電壓或高壓輸出裝置
JCI-147     配套法拉第桶, 測(cè)試靜電荷量

JCI-140靜電測(cè)試儀性能特點(diǎn)
JCI-140/140F可以非接觸地測(cè)量物體表面靜電位，測(cè)試距離為100mm，2擋量程可選：0～+/-2kV和0～+/-20kV。2kV量程，分辨率1V；20KV量程，分辨率10V。 
 
儀器外殼為純鋁材料，可以屏蔽外部干擾信號(hào)。3位半LCD屏幕顯示讀數(shù)和極性，測(cè)量單位為kV。超出量程蜂鳴報(bào)警聲提示。 
 
JCI-140/140F具有穩(wěn)定快速的測(cè)試特點(diǎn)，可進(jìn)行連續(xù)測(cè)試，測(cè)試精度為+/-2% FSD。
JCI-140 的頻率響應(yīng)為-3dB@120Hz，因此可以測(cè)量極性變化的電位（例如交流電場(chǎng)）；JCI-140F具有更高的頻率響應(yīng)-3dB@400Hz。儀器采用干電池供電，也可采用外接電源適配器（選配）。電量不足時(shí)，LCD顯示屏自動(dòng)顯示“LO BATT”。 
 
JCI-140/140F具有模擬信號(hào)輸出端口，可以提供+/-2V輸出信號(hào)給紙圖記錄儀、萬(wàn)用表或示波器。 
 
JCI-140/140F 測(cè)試儀配合JCI-147 法拉第桶可以測(cè)試物體靜電荷量，量程：0～+/-2nC和0～+/-20nC，分辨率1pC（2nC量程）。 
 
JCI-140/140F測(cè)試儀配合JCI-148轉(zhuǎn)換探頭可以接觸式測(cè)量導(dǎo)體靜電位或高壓電源輸出電壓，量程：0～+/-2kV和0～+/-20kV，分辨率1V（2kV量程）。 
 
 
JCI-147法拉第桶可以直接安裝在JCI-140/140F測(cè)試儀上，JCI-140/140F測(cè)量?jī)?nèi)桶外壁的靜電位，然后乘以法拉第 桶的電容得到靜電荷量。JCI-140/140F探測(cè)頭位置距離法拉第桶經(jīng)過校準(zhǔn)設(shè)置，所以儀器讀數(shù)直接 為靜電荷量（單位nC），測(cè)試精度+/-5% FSD 
 
JCI-147法拉第桶內(nèi)桶尺寸： 
直徑：50mm 
高度：70mm  
 
JCI-148轉(zhuǎn)換探頭可以直接安裝在JCI-140/140F測(cè)試儀上。轉(zhuǎn)換探頭內(nèi)部有一個(gè)電容很小（7pF）的等電位金屬片，通過配套測(cè)試線連接被測(cè)試物體，儀器顯示被測(cè)試物體靜電位。 
 
JCI-148轉(zhuǎn)換探頭外殼為純鋁，可以屏蔽外部干擾信號(hào)，測(cè)試泄漏電阻大于10·14Ω。 
測(cè)試精度+/-2% FSD 

Benefits
-  Indicates surface voltage
-  Resolution to 1V &  full scale 20kV  (standard version, used as per manufacturer’s  
  instructions)
-  Extended range available for higher voltages
-  Fast version available for high frequency AC fields (-3dB at 400Hz) 
-  Field mill technology avoids the zeroing required for Induction Monitors.
Including the JCI 140F, JCI 140X and JCI 140XF
JCI 140 Field Mill Static Monitor
The JCI 140 is a compact instrument for easy detection and measurement of static electricity and 
for assessment of risks in practical situations.

General Description
The JCI 140 Static Monitor is a compact, easy to use instrument for direct non-contact 
measurement of surface voltage. It is available in 3 options: F – Fast Response, X – Extended 
Range & XF - Fast Response Extended Range. From a distance of 100 mm the 3½ digit liquid 
crystal display indicates surface voltage to an accuracy of 1 Volt. This makes it particularly easy 
to find even low levels of static charge and to make measurements with confidence.
As a field mill instrument there is no need to switch-on in a static free environment, no need 
for measurements to be made within a limited time and no need to worry about the influence 
of air ionisation –  which are all concerns with simple ‘induction probe‘ type instruments. The 
novel mode of operation of the JCI 140, with no earthing of the rotor (the instrument must still 
be earthed), provides quiet, stable operation with fast response and long operational life.
The  JCI 148  and JCI 146  are compatible modular voltmeter adapters for use with the JCI 140. 
Both instruments allow direct measurement of voltages on live conductors using a probe. The 
JCI 140, when used with the JCI 148, can measure voltages up to 20kV dc and the JCI 146 
can measure voltages up to 60kV dc. The very high input resistance of these systems eliminates 
the loading effects suffered by many high voltage voltmeters and high voltage adapters for 
multimeters. The JCI 147  is a compatible modular  Faraday Pail  adaptor for use with the 
JCI 140. It allows direct measurement of charge (in nano Coulombs) on items placed in the 
Faraday Pail. 

Specification
Ranges:          2kV & 20kV full scale 
      1V and 10V resolution at 100mm
      (20kV & up to 50kV for JCI 140X / XF, with precautions as per the       
    manufacturer‘s instructions)
Response:    -3dB at ~120Hz for standard JCI 140 
      -3dB at ~400Hz for JCI140F 
Zero Stability:     Within ±10V on 2kV range
Accuracy:          Within ±2% FSD
Linearity:    Within ±1% FSD
Display:                3½ digit LCD indicating surface voltage in kilovolts at 100mm with polarity   
      and ‘LO BATT‘ indication
Audio alarm:     Pulsing audio output when reading above user set alarm level
Signal outputs:     Via 8 pin miniature DIN socket     
Power Supply:    PP3 Battery or JCI142 external mains adapter
Dimensions:    34x66x150mm overall. Weight: 320g.

Accessories & Services  
JCI 143 Analogue Output Cable
JCI 142 External Mains Adapter
JCI 169 Permanent Mounting Feet
Digial USB Oscilloscope & Data Logger
Calibration to BS7506: Part 2:1996
JCI 125 Zero Check Chamber

Compatible Modular Instruments
JCI 148  Electrostatic Voltmeter
JCI 147  Faraday Pail

Benefits
-  Measures voltage on conductors with near zero current drain
-  High level of accuracy
-  Measurements up to 20kV
-  Simple quick release mechanism for mounting the JCI 140 unit.
JCI 148 Electrostatic Voltmeter Adapter
Compatible with  JCI 140  Static Monitor
The JCI 148 can be used for accurate measurement of voltages with negligible current 
drain.

General Description
The JCI 148 Electrostatic Voltmeter comprises a shielding enclosure in which an electrode, 
connected to the input, is supported by high quality insulation in a well-defined and stable 
geometric arrangement relative to the sensing aperture of a  JCI 140  Static Monitor. 
The geometry is such that the numbers shown on the display correspond directly to the 
applied voltage input in kV.  
The attraction of an electrostatic voltmeter based on the JCI 140 Static Monitor is the 
near zero current drain (limited only by insulation leakage not less than 10
14
 Ohms at up 
to 20kV), the high sensitivity (1V resolution in 2kV range), the low internal capacitance 
(about 7pF), high input time constant and the linearity of response.  

JCI 148  – Electrostatic Voltmeter Adapter
Specification
Ranges:        2kV & 20kV full scale. 1V and 10V resolution 
Accuracy and linearity :         Within ±2% FSD on JCI 140 display and analogue output signal
High voltage connection:   Special JCI HV protective connector
Maximum safe voltage:  ±25kV