Features:

• Manual Control with interlocking push buttons and 24 status outputs for flagging data.
• Remote Control 13 Functions from your data acquisition and control system for automated calibrations.
• 4 Sample Outputs A,B,C,D with rotometers and needle valves for flow control.
• 13 Calibration Gas Inputs High, Medium, and Low range plus a zero gas.
• Individual Channel Calibration allows other channels to stay on line.
• Probe Tip Calibration with rotometers and needle valves for flow control.
• Separate Pressure Regulators for sample and calibration gas provides reliable calibrations.
• Water Intrusion Monitor alarms when moisture is detected in system.
• Backpurge Function allows blowback of probes and filters.
• Internal Sample Filter for protection of flow panel and your analyzers.
• Stainless Steel Solenoids and Fittings top of the list of premium quality parts.

Description
The CleanAir Express FLW6 FLOW PANEL is a compact 19" rack mount panel designed to control sample and calibration gases to extractive analyzers for CEM and process control applications. Design features include an auto mode for remotely controlling up to 13 functions from your data acquisition and control system for automated calibrations.

Manual control is simplified with interlocking push button switches and status outputs for flagging data. Three calibration gas inputs (High, Mid, Low) for each channel and a separate zero gas input. Adjustable flow rate for probe tip calibration and sample out (A,B,C,D).

Separate pressure regulators for both sample and calibration gas provide reliable calibrations by matching pressure and flow. Individual channel calibration allows other channels to stay online.

Water intrusion alarm light and contact output for disabling sample pump if moisture is detected in system.

Backpurge function controls air and remote solenoid contacts for blowback of sample probe and filter.

Stack Tester Comments :
We use the FLW-6 on CEM projects for quick setup and hands-off cal gas management. To manage the FID cal gas to the probe tip we use the 5-Channel Calibrator in combination with the FLW-6 for the other dry gas analyzers.

The solenoid values require properly maintained gas cylinder pressure regulators to ensure the gas pressure to the solenoids never exceeds 40 psig. Pressure regulators which cannot control pressure with zero flow should not be used.

It is very important to filter the sample gas before it enters the FLW-6. The MAK Plus Gas Transfer System is excellent for this with the filter differential pressure indicator and the auxiliary filter built-in.  These eliminates the stressful situation of identifying a filter plugging problem and then deciding whether to bypass or delay the test.