STELTEC's HL Series controllers use Oxidation Reduction Potential (ORP) and/or pH to provide precise control of water chemistry. However, the system is robust enough to handle unexpected variations in your plant's flow. Recirculating and once-through systems are both offered.
This series of control systems feature STELTEC's proprietary NTL control logic. NTL has been designed to handle even difficult-to-control once-through applications where PID controllers are not suitable.
There are two HL models, based on the number of channels required. All HL systems feature:
For every action, there is an equal and opposite reaction.
NTL is designed to make control changes only after the passing of a calculated lag time, thereby preventing overshooting and undershooting.
the NTL control logic will ensure that a steady setpoint is maintained.
Water & Waste Water