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NTL: Newton's Third Law
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.
Designed for:
- Long lag times (greater than 1 minute)
- Variable lag time
- Variable flow rates
- A variable measured parameter
the NTL control logic will ensure that a steady setpoint is maintained.
HL Series ORP/pH Controllers
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Water & Waste Water
Control Systems
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:
- Color Touch Screen: Easy to see, intuitive to operate
- Mini Web Server (Ethernet): Any web browser on the network can monitor the controller
- Live Trending: See what's happening in real-time
- Data Logging: Store up to 4 years of data readings