Back to top
Send SMS Send Inquiry

pH ORP Digital Controller with Sensor Check

pH ORP Digital Controller with Sensor Check
pH ORP Digital Controller with Sensor Check
Send Inquiry
Product Code : HI-504
Product Description

In this field we are recognized amongst trusted manufacturers and suppliers of pH ORP Digital Controller with Sensor Check. To manufacture this device, we use superior quality materials and components.  The instrument has a full auto diagnostic procedure with automatic temperature compensation of pH. We check this device on defined quality parameters to provide the flawless range to clients. Clients can avail this pH ORP Digital Controller with Sensor Check from us in different specifications as per their requirements.


  • Real time status monitoring
  • Light in weight
  • Compact design

Further Details:

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 Checkâ„¢ 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 Checkâ„¢ 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
Range pH -2.00 to 16.00 pH

ORP -2000 to 2000 mV

Temperature -30 to 130.0°C
Resolution pH 0.01 pH

ORP 1 mV

Temperature 0.1°C (above -10 °C); 1°C (below -10°C)
Accuracy @ 20°C pH ±0.02 pH

ORP ±2 mV

Temperature ±0.5°C (-9.9 to 130.0°C); ±1°C (-30 to -10°C)
Input Impedance   1012 Ohm
Digital Input
for the pH/ORP/°C
Other Digital
Insulated Inputs
  two digital insulated inputs: one for hold and one for the advanced cleaning; ON state: 5 to 24 VDC
Digital Insulated
  a digital insulated contact closed upon hold mode
  automatic or manual, -30 to 130°C
Temperature Probe   with three-wire or two-wire Pt100/Pt1000 sensor (with automatic recognition and damage test)
Power Supply   24 VDC/AC, 115 VAC ±10%, 230 VAC ±10% or 100 VAC ±10%; 50/60 Hz
Power Consumption   10 VA
Over Current Protection   400 mA 250V quick blow fuse
Max. Oscillation
  8 MHz
Relays 1, 2, 3, 4   electromechanical relay SPDT contact outputs, 5A-250 VAC, 5A - 30 VDC (resistive load); fuse protected: 5A, 250V quick blow fuse
Alarm Relay   electromechanical relay SPDT contact output, 5A - 250 VAC, 5A - 30 VDC (resistive load) fuse protected: 5A, 250V quick blow fuse
Analog Output   two independent outputs, 0 - 22 mA (configuring as 0-20 mA or 4-20 mA)
Analog Output
  0.1% f.s.
Analog Output
  ± 2% f.s.
Data Logging   6000 pH/°C or ORP samples
Environment   0 to 50°C?(32 to 122°F); RH max 85% non-condensing
Casing   IP20 (housing); IP54 (front panel)
Weight   1.6 kg (3.5 lb.)


3,4,5,6 First Floor, Aumsai Building, Plot No. 23C, Sector-7, Kharghar,Navi Mumbai - 410210, Maharashtra, India
Phone :+918045802111
Fax :91-22-27746557
Mrs Nainika Agarwal (Digital Marketing Specialist)
Mobile :918045802111

Mr. Dhananjay Jha (General Manager)
Mr. Kondiba Metkari (Business Manager)
Mobile: +917045792178, +917045792164
Send SMS Send Inquiry