877-25 pH/ORP Method Chlorine Panel

/877-25 pH/ORP Method Chlorine Panel

877-25 pH/ORP Method Chlorine Panel

Free Available Chlorine Analyzer with Sample Panel

The industrial free available chlorine analyzer model 875-25 from IC Controls gives you maximum flexibility, reliability, and ease of use.


The industrial two-sensor pH/ORP chlorine analyzer and sample panel from IC Controls give you maximum flexibility, reliability, and ease of use.

Sample Panel Features

  • The analyzer computes free available chlorine (HOCl). The analyzer measures ORP, adjusts for pH and temperature, and reads out free available chlorine.
  • Total free chlorine (HOCl + OCl) is computed from the same ORP and pH signals.
  • No reagents required.
  • Sample panel includes ORP sensor, pH sensor, flow cell, pressure-reducing valve, flow setting valve, atmospheric break, constant head, grab sample point, and atmospheric drain.
  • Sample-conditioning panel assures good results.

Easy Program Does What You Expect

  • Self- and sensor diagnostics
  • Fault tolerant
  • Output hold during calibration
  • Two programmable 4-20 mA outputs
  • Dual programmable alarms with self- and sensor alert
  • Frequent adjustments by keypad prompts
  • Program remembers what you were doing
  • No long key sequences
  • Instant return to sample display
  • 3-Level security to protect settings
  • Easy to operate
  • LCD displays ppm chlorine, pH, ORP, temperature, alarm setpoints, and calibration status.

Easy Maintenance

  • Use rugged pH and ORP electrodes that can run for years with little service
  • No reagents are required.
  • Chlorine membrane module replacement is easy
  • Reliable, separately powered and optically isolated output circuit prevents computer interface problems
  • Durable housing withstands hosing down, survives acid and caustic fumes, rain, and humidity.

Use Any of the Following

  • Local digital indication
  • 4-20 mA signals
  • Adjustable alarms
  • ON-OFF control

The analyzer is 115/230 VAC operated.

IC Controls has incorporated intelligence into the microprocessor analyzers, which can be accessed using the optional IC Net™ Advanced Intelligence Access Program. Measurements such as chlorine can be critical to your process and must be strictly monitored and maintained. Analyzer intelligence goes beyond measurement and control; it provides the user with all necessary historical data, including events such as calibrations and diagnostics. This information can be communicated for trending or advanced control, even to remote locations. Ultimately, the user has superior control with a competitive advantage.

The analyzer stores the last 12 monthly calibration records. The last 20 upsets are recorded and date-stamped, e.g. out of spec events, alarms and power interruptions. Internal data logging capability can record hundreds of data points at user-defined time intervals for later recall of factors leading to alarm conditions and for analyzing measurement trends. An optional real-time clock allows accurate tagging of events and duration even through power outages.

The IC Net™ Intelligence Access Program runs in your Windows-based computer using RS485/RS232 and can provide you access to multiple analyzers.


Selection Guide
User Manual
Engineering Specifications
Download Article

Chlorine Theory and Measurement

Chemical introduction to aqueous chlorine forms and properties; effect of and relation to pH/ORP; summary of free chlorine measurement technologies
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