Automatic sampling systems are simple, safe and accurate ways to manage representative sampling in your plant. But even the most reliable sampling solution will need ongoing maintenance and service. When your automatic samplers aren’t functioning properly, these troubleshooting tips can keep your system running smoothly.
Automatic samplers are popular choices because they allow a composite sample to be collected from the process by taking smaller, incremental, representative samples of the lot. Automatic sampling ensures a sample can be easily and safely obtained with no need for direct human interface or interference. This safeguards the sample integrity as well as operator safety.
But even the most reliable sampling solution needs ongoing maintenance and service. Troubleshooting should be a part of your regular maintenance plan. When your automatic samplers aren’t working as expected, knowing a few troubleshooting tips can keep your system running smoothly.
Troubleshooting your AUTOMATIC samplers
RX Automatics Samplers
The Sentry Model RX automatic sampler functions by extending a sampling tube into the process line through a solenoid-controlled air cylinder. While in line, the tube is continually taking a dry, free-flowing sample and simultaneously discharging it to the collection point.
Problem | Solution |
There's no sample |
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The sampler is leaking |
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The sample tube won't extend or retract |
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The sample tube stroke is too slow |
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There is excess sample |
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PR Automatic Samplers
The Sentry PR sampler's air cylinder moves a sample probe into the process stream. The free-flowing materials sampled is discharged through a flexible hose to a collection point. Material characteristics are not affected by the sampler because no moving parts convey the sample material to the sample container.
Problem | Solution |
The sampler is leaking |
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The sampler tube won't extend or retract |
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SBC Controllers
The Sentry SBC controller is a dedicated logic control system that can control any automatic sampler in the Sentry product line.
Problem | Solution |
The controller isn't operating |
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The remote start function isn't working |
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The remote enable function isn't working |
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The buttons won't respond when pressed |
If the controller was up and running and the plant observed a power outage or if the voltage supplied to the controller fluctuates, the controller automatically goes into “IDLE” mode. While in this mode, certain buttons are disabled. To change the state of the controller from “IDLE” to “RUN”:
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Automatic sampling helps you capture representative samples simply, safely and accurately. Contact us at +1-262-567-7256 or complete our online contact form to discuss how Sentry automatic sampling systems can help you achieve safe, simple and accurate sampling results.