品牌：美國monroe (門羅)
主要規格/特殊功能:
可移動的電纜連接的平板，便於準確定位的遠距離監測
獨立的時間和電壓顯示，便於衰減速率的分析
記錄機輸出便於記錄或其它操作
從0-5kv有兩個量程
生動演示感應起電和人體電位
正常工作模式為室內和臺式、平板或離子風槍或噴嘴離子風消電器提供靜電衰減時間和離子平衡監測
峰值模式為脈沖直流離子風消電器監測電壓峰值的極性
平板與測試電路的總電容：20+/-2pF
平板自放電速率：<10%設置電壓(5分鐘內）
大小：15.2X15.2cm
測試電源：
最大輸出：+/-6000V
平板可充電電壓 +/-1000V和+/-5000V, 0-5000V可調
靜電場強表：
可選量程：0- +/-5000V, 0- +/-2000V
準確度：2%
漂移：<0.4%/小時，10分鐘穩定後無積累
響應速率：<100ms 10%-90%
帶寬：6Hz
輸出：1/1000平板電壓
記時器：
范圍： 1.0 kV/100 V or 5.0 kV/500 V （用戶選）
最大計時時間：999.9 sec (16 minutes +)
整機：
大小：(17 x 17 x 24cm)6x 6x 9inches
電源：220V／50HZ。
重量：2.3kg
Charge Plate Analyzer 268A
Features:
• Easiest, most reliable way to check
effectiveness of all ionization-type
static control systems
• Meets ESD Association Standard No.3
• Removable, cable-connected plate/
probe permits precise positioning and
remote monitoring
• Separate time and voltage displays for
decay rate analysis
• Recorder output for permanent
records and unattended operation
• Two ranges measure from 0 to ±5kV
• Dramatically demonstrates induced
charges and human body potential
Make sure antistatic devices are working
Wrist straps, work surfaces, flooring materials —
static decay measurement is a sure indication that
they’re doing their job. The plate has a connector to
permit measurement of charge buildup on operators.
Easy to use
To operate in discharge mode:
1. Locate the removable plate/probe wher
ionization is to be checked, main instrument
wher convenient.
2. Turn the instrument on and selec test parameters
(mode, polarity, voltage range, and upper and lower
voltage limits across which the decay rate is to be
measured.
3. Press ZERO to ground the plate, then press
CHARGE to bring the plate to the preselected
maximum voltage.
4. Press DECAY, as the ionization system
neutralizes the plate charge, the instrument will
continuously measure the decaying voltage.
Elapsed time (in seconds) is displayed on the front
panel, along with plate voltage. The speed at which
the voltage drops is proportional to ionization
system performance.
Measurement in the peak mode is just as simple.
Model 268A-1T adjustable timer option
This option allows the user to set the timer stop
voltage at any level from 0 V to 1000 V. The start
voltages remain the same.
evaluate all ionization systems and
anti-static devices – and demonstrate
charge presence
Two operating modes cover all types of ionization
systems.
For room and table-top ionization systems,
laminar flow hoods, and air guns and nozzles the
normal (discharge) mode provides both static decay
timing and system balance monitoring.
For pulsed DC ionization systems the peak
mode monitors voltage swings by reading and holding
the peak voltage and polarity (positive or negative)
sensed on the charged plate/potential.
Specifications subject to change without notice. | Printed in USA | Copyright© 2002 | Monroe Electronics Inc. | 268A ds 083106.p65
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