Water & Waste Water 

Control Systems

P.O. Box 318, Towanda, IL 61776 | 815-515-9599

HL1 ORP/pH Controller

HL1 is a single channel ORP/pH controller suitable for single basin monitoring and control  within municipal and industrial applications.

Features:

  • 3.5" color touch screen
  • Live trending
  • Auto-sensitivity tuning
  • SD data logging
  • Battery backup
  • Start-up recall
  • Alarm overrides
  • NEMA 4X Enclosure
  • Slave support


Communications:

  • Ethernet capable
  • Web-based enabled
  • Modbus

Inputs:

  • 120/240 V AC
  • ORP or pH sensor connected directly or through a remote pre-amp
  • Sensor input is isolated
  • Sensing accuracy: +/- 0.1% per year
  • Range: -1000 to 1000 mV or 0.0 to 14.0 pH units
  • 4-20 mA analog input (used for flow readings)


Outputs:

  • Fully rangeable, 4-20 mA recorder output with +/- 0.02 mA accuracy
  • Used with devices up to 1000 ohms
  • 6 relay outputs
  • 4-20 mA feeder output
  • 3 Control modes: TBP / NTL / Monitor
  • General alarm relay
  • 120/240 VAC, 5 amp relay for automatic sensor cleaning