PH ORP Digital Controller with Sensor Check

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Product Description

HI 504 is a PID, PI, proportional or on/off pH/ORP controller with one or two set points. The measurement configuration settings and control of pH and ORP are saved separately and permits users to switch between pH and ORP without losing settings. The pH channel can be calibrated in 2 calibration points. The instrument has a full auto diagnostic procedure. Sensor Check is also available for pH and ORP probes.

The temperature is continuously monitored using a temperature sensor (Pt100 or Pt1000 type) with automatic temperature compensation of pH.

One or two analog controller outputs (0-20 or 4-20 mA) can be configured for pH/ORP recording or controlling (only for models with PID), and relays can be used to control the process or be connected with alarm status.

Product Details:

PID, PI, proportional or ON/OFF control of pH or ORP for one or two set points
Sensor Check for a real-time pH/ORP electrode status monitoring
Digital transmitter or direct connection of the probe
Matching PIN to eliminate the ground loop effect
Automatic temperature compensation for pH
Logging of up to 100 system events and up to 6000 readings (pH, ORP, T)
Control performed with up to 4 relays or analog output in 0-20 or 4-20 mA
Automatic probe cleaning from alarm or user request

Technical Specification

Environment	0 to 50 Deg C (32 to 122 Deg F); RH max 85% Non-condensing
IP Rating	IP20 (housing); IP54 (front panel)
Model	HI504
Over Current Protection	400 mA 250V quick blow fuse
Power Consumption	10 VA
Power Supply	24 VDC/AC, 115 VAC +/-10%, 230 VAC +/-10% or 100 VAC +/-10%; 50/60 Hz
Weight	1.6 kg (3.5 lb.)