Combines pH Measurement, Recording, and Controlling in One Unit
Built-in 30 Day Chart Recorder
High and Low Set Points
Time Delay Safety Feature
On/Off Control
产品描述
The PHCN-45, PHCN-47 and PHCN-48 model has been discontinued. Please see the CTXL Series as a possible alternative or contact our Flow Engineering department.
PHCN-45
The PHCN-45 combines pH measurement, recording and controlling in a single compact unit.
pH and millivolt readings are displayed on a 6" mirrored meter and the built-in chart recorder
provides a 30 day record. In the standard mode, accuracies as great as ±0.05 pH and ±5 mV can be
achieved. If increased accuracy is required, a 10X scale expansion is provided. Easy to use front panel
controls can set both the high and low limits for pH control function to within 0.1 pH and activate a visual
alarm when the limits are exceeded. If desired, an adjustable Time Delay Safety Feature will shut off power to
the output if the pH does not return to the control point within set time (0-10 minutes). This can prevent over
addition of neutralizing chemicals due to probe or meter malfunction. A pulsed 5 VDC alarm output is
available to drive a DC solid state relay to indicate this condition.
PHCN-47
The PHCN-47 is a single electrode input model that combines the same functions as the PHCN-45 in a
NEMA 12 type cabinet that may be used in a harsh environment.
PHCN-48
The PHCN-48 is identical to the PHCN-47 with a single exception: the PHCN-48 uses a dual
electrode input that allows connection of one electrode to the meter/controller and the other to
the recorder to allow real-time monitoring of the control system. In typical applications, the first
electrode is placed in the input water flow where it senses pH and activates the control system.
A second electrode located downstream drives the recorder to provide a continuous record of the
pH of the effluent from the control system.
