• Monroe 279 靜電電壓表
  • Monroe 279 靜電電壓表
  • Monroe 279 靜電電壓表
  • Monroe 279 靜電電壓表

Monroe 279 靜電電壓表

• Low profile half rack size for
multi-channel applications
• Full complement of interchangeable
probes
• Selectable recorder output range
• LED meter with “black out” for dark
room applications
型號 : Monroe 279

The model 279 ISOPROBE® Electrostatic Voltmeter measures surface potential in the range of ±3000 volts without contacting the measured surface It features high-accuracy (0.1%), drift-free measurements that are almost fully independent of probe-to-surface separation. Its low-profile design is optimized for rack mounting of multiple 279′s in a minimum space.

Side- and end-viewing probes accommodate various mounting requirements. Specialty high-resolution probes allow the 279 to resolve spot diameters as small as 1 mm. Probes include air purge capability to prevent ingress of particulate.


Range:                   
±3000 volts, auto polarity
Accuracy:*
0.1%, ±0.003%/°C over +20 to +40°C range (at recorder output) Useable to +50°C

Speed of Response:*     

For typ. input step: <3ms (10% to 90%)

for 1kV step: <2½ms (10% to 90%)

for 2kV step: <3½ms (10% to 90%)

for 3kV step: <4ms (10% to 90%)

Settling time:
<3½ms to 1% of 1kV step input
Frequency response:
Small signal frequency response typical ±3db to >300Hz
Drift:*
<0.01V/hr after 1 hr warm-up (0.003V/hr typical). Not measureably affected by 10°C temperature variation or changes between 10% and 90% relative humidity.
Noise:*
<0.3V rms or 2 volts peak-to-peak wide band (bandwidth restricted to <1kHz) referred to input.
Surface resolution:
Determined by probe aperture size and surface-probe separation. Standard type 1034E & S probes with 0.07” (1.75mm) aperture will resolve a     0.10” (2.5mm) spot at 0.02” (0.5mm) separation.
Recorder output:
Compressed analog output is input divided by 100, 200, or 1000 (factory selectable). Typical maximum dynamic range at isolated BNC     connector is > ±18 volts for external loads >10kΩ
Output filter:
Bessel low pass filter with 0.7ms constant delay
Probe:
Uses Model 1034 series probes
Power requirement:
100, 115, 230 VAC, ±10%, 50/60Hz, 15 watts
Size:
1.7x8.2x15.1” (44x208x384mm), 1.75” rack mounting available (1 or 2 per rack)
Weight:
4lb. (1.8kg)
Accessories:
Manual, probe hole vent plug, line cord, optional 220V fuses
CE Compliance:
Pending

  • Electrophotographic measurements
  • Radiation effect studies
  • Electret research
  • Electric field studies
  • Process monitoring and control
  • Integrated circuit manufacturing and handling

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