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
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.
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Range: |
±3000 volts, auto polarity |
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Accuracy:* |
0.1%, ±0.003%/°C over +20 to +40°C range (at recorder output) Useable to +50°C |
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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%) |
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Settling time: |
<3½ms to 1% of 1kV step input |
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Frequency response: |
Small signal frequency response typical ±3db to >300Hz |
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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. |
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Noise:* |
<0.3V rms or 2 volts peak-to-peak wide band (bandwidth restricted to <1kHz) referred to input. |
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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. |
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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 |
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Output filter: |
Bessel low pass filter with 0.7ms constant delay |
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Probe: |
Uses Model 1034 series probes |
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Power requirement: |
100, 115, 230 VAC, ±10%, 50/60Hz, 15 watts |
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Size: |
1.7x8.2x15.1” (44x208x384mm), 1.75” rack mounting available (1 or 2 per rack) |
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Weight: |
4lb. (1.8kg) |
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Accessories: |
Manual, probe hole vent plug, line cord, optional 220V fuses |
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CE Compliance: |
Pending |
- Electrophotographic measurements
- Radiation effect studies
- Electret research
- Electric field studies
- Process monitoring and control
- Integrated circuit manufacturing and handling
