
利用这套仪器,您可测量静电场、分析静电消除器效能表现,并且评估材料、设备及人员的电压产生。

- 在0 – 1,999V范围采1伏特增幅,误差<±2%,以及
- 在0 – 20,000V范围采10伏特增幅,误差<±5%直至5kV。
搭配随附的模拟输出连接线,它可用来连接X-Y坐标绘图仪,或是任何模拟数据纪录装置。位于前方面板的模拟输出接头提供一个1伏特输出,其相对应之值为10kV,与选定的量测仪范围或显示值无关。

效能表现研究显示CPM-720A 3.25英吋平板与CPM-760A 6 inch Charge Plate Monitor有很明显的相关性。

此三件仪器接受匹配校正后,共同用以执行准确与有效的稽核。

规格
PFM-711A FIELD METER
OVERALL RANGE
High Range 0 V to ±19.99 kV (at 1” distance):
Least significant digit indicates volts at one inch (kV/in) in 10 Volt increments
Low Range 0 V to ±1,999 V (at 1” distance):
Least significant digit indicates volts at one inch (V/in) in 1 Volt invrements.
Measures higher voltages at greater distances, e.g., at 2” double indicated voltage, at
4” multiply indicated voltage by four.
INTRUMENT TOLERANCE
Tolerance at > 10 kV depends on conditions and handling
Accuracy unaffected by the presence of air ionization.
Note: Performance when mounted in laboratory fixture positionned 1 inch from a 6”x6” reference plate
RANGE LIGHTS
METER DISPLAY
Automatic polarity, HOLD and LOW BATTERY indicators
RESPONSE
Analog Output Time Constant: Either Range 0.1 sec.
Display Time Constants: High Range 0.2 sec., Low Range 2.0 sec.
OUTPUT
±10.0 kV meter reading equals ±1.0 Volt output
CONTROLS
Sample/HOLD push button, and ZERO adjust knob.
GROUNDING
POWER
Battery life minimum 40 hours.
DIMENSIONS
1.3” deep with zero knob and snap fastener (3.3 cm)
WEIGHT
CPM-720A CHARGE PLATE ASSEMBLY
TOLERANCE
CAPACITANCE
Note: Plate capacitance is 15.8 pF when mounted to PFM-711A Filed Meter
RANGE
GROUNDING
DIMENSION
WEIGHT
PCS-730 CHARGING SOURCE
INPUT POWER
Battery life in excess of 40 hours continuous operation.
OUTPUT
Current limited to less than 1 Microamp.
OUTPUT CONNECTOR
GROUNDING
Note that wand must be installed and unit grounded for proper operation.
DIMENSION
2.5” x 4.2” x 1.8” with input jack, switch and snap (6.3 cm x 10.7 cm x 46 cm)
WEIGHT
Note: The PFM-711A is calibrated under controlled conditions, on a fixed fixture, a ±2%. Under nomal operation and uncontrolled conditions, typical tolerance shift to ±5%.