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Porta-Test Leak Detector
The Varian 938-41 Porta-Test Leak Detector delivers accurate and dependable leak test results, yet it is compact, portable, and affordable.
Features
Portable, easily handled on cart
Single-handle valve operation
Easy-to-understand tuning and calibration controls
LED leak rate bar graph
Design uses the Contra-Flow principle
Dual filament ion source
Basic unit draws only 5 amps at 115 VAC/60Hz
No liquid nitrogen is required
Basic unit weighs only 50 lbs .
Specifications
| Minimum detectable signal/sensitivity (in accordance with AVS standard 2 .1): |
2 x 10-10 atm cc/sec range (helium) |
| 8 x 10-11 atm cc/sec (air) |
| Response time: |
2 seconds for helium in accordance with AVS standard 2 .1
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| Amplifier drift:
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Less than 2% of most sensitive scale in accordance with AVS standard 2 .1 |
| Noise level: |
Less than 2% of full scale, peak-to-peak, in accordance with
AVS standard 2 .1 |
| Leak indicator (50-segment bar graph . Three sets of direct-reading sensitivity
ranges comprised of four decades in each range ): |
10-9 to 10-6 atm cc/sec
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10-8 to 10-5 atm cc/sec
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| 10-7 to 10-4 atm cc/sec |
| Recorder jack: |
0-5 VDC |
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