3208-106 Spottswood St  
Raleigh, NC 27615  
Phone: 919-790-9090  
Fax: 919-790-0550  

FAQ

 

What form of ash do you use for spiking?

 In most situations, a dispersion of titanium dioxide (TiO2), DiDp or water-based, is used since it is inert and non-reactive. However some testing requires a specific form of ash.
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How do the BLD alarms compare to my permitted PM limit?

 The two values are completely independent of each other. The PM limit is based on the results of a specific EPA test method while the BLD limits are based on the results from your BLD sensor, which are site specific. Please contact B3 Systems directly for become a member of our User Forums for more details and specifics.
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What is the recommended cable?

 There are two (2) recommended Belden cables that can be used. This first is a Belden 9402. This cable has a non-UV jacket and is recommended for running inside conduit. The second is a Belden 1075A. This cable has a UV jacket and can be run outside of conduit in the elements.
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Why are my readings affected by rain?

 Rain should not affect the sensor readings under normal circumstances. However we have seen several situations where the rain resulted in process changes and/or physical changes to the sensor operation. These include: 1.Increased moisture in the process causing condensation. 2.Contracting of the duct due to cooling effect and causing buildup on walls to release. 3.Changes to the grounding of the unit.
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How do I change the IP address on the controller?

 If you are using B3 Systems Ethernet Module you can change the IP address through your web browser, please see B3 Systems' AMC Ethernet Module Manual.
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How can I get copies of manuals and support information?

 Copies of all manuals and documents can be obtained through the website for all valid users. If the document/manual you are seeking is not provide please contact support via email at support@b3systems.com or 919-790-9090 Ext 101.
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What does the number or value from the sensor represent?

 This is a dimensionless relative number that is related to the dust/PM concentration that are passing by the sensor rod. The absolute reading can vary due to particle size and materials ability to carry a charge. Again, this is just a relative number. More information can be obtained in the User Forums.
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What is the purpose of the instant or average alarm?

 The instantaneousness alarm is used to notify when the unit has deviated from normal operation without any data smoothing or averaging. The average alarm, which is generally used for compliance monitoring, using a rolling average to smooth out the extreme changes seen in bag filter operations to provide a more consistent value.
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What are the modbus addresses and how are they set?

 The Modbus address (NODE Address) for the sensor is used to differentiate each sensor from each other. This is required so that the controller or the PLC can identify which sensor it is talking to and belongs to which process. Each sensor must have a unique address on the network. The address is set by means of the DIP switch (SW100) located in the sensor assembly itself. Only switch positions 1 to 6 are used giving valid address settings from 1 to 64 (Note that valid Modbus addresses are 1 - 32). The address switch uses binary coding to calculate the required address. For example, to set address number 5: Set switch 1 (binary 1) ON and switch 3 (binary 4) ON (4 + 1 = 5).
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Can you provide a maintenance plan that will satisfy the EPA?

 The answer to this question is YES. We currently provide these services to many of our clients. They can be tailor to your specific needs whether it be a monthly maintenance and response test to a multi-year contract.
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How do I set up relays?

 Relays can be either setup using the relays that are provide on the controller (Multi-Controller has 4 and Single-Controller has 2) or by using the dust reading that can be output to your own system (using 4-20 mA analog outputs from the controller or Modbus TCP and/or Ethernet/IP Ethernet communications) and the emission alarms set within that system (DCS or PLC).
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Can I use 6 minute or 15 minute averages for filter monitoring for compliance?

 Your specific requirements always depends on the specific language within the specific rule or your permit. But normally these are not accepted averaging periods. Bag filter monitoring is different than other Operating Parameter Limits (OPL). OPL monitoring can be Rule specific, but most compliance OPLs require valid 1-minute averages to create a 15-minute average. Valid 15-minute averages are used to create valid hour averages and the valid hourly averages are used to create 3, 6 or 12 hour rolling averages. BLDs are monitored continuously (once per second) for alarms due to the fact that most peaks in baghouses can be less than 5 seconds in duration. Monitoring for events less frequently will provide a biased indication of the filter operation.
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Can you help set-up the BLD alarms?

 B3 Systems provides a service to set-up filter alarm levels based on current EPA and accepted guidance. We require a minimum of 3 - 7 days of 1-second unfiltered/averaged data from the dust monitor. This data is reviewed and evaluated based on the type of filter, the method of cleaning, process operations and variations for the correct rolling average time period (0 - 15 seconds), alarm set-point and alarm delay, if applicable. Please contact B3 Systems for more details.
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How much POHC do I need to feed for my testing?

 The total amount of POHC feed can be site specific based other compounds and potential analytical interferences. For planning purposes only, B3 Systems has created a DRE Calculator.
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3208-106 Spottswood Street 
Raleigh, NC 27615

Phone: 919-790-9090
Fax: 919-790-0550
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