Omega Products PHCN-51 User Manual

Industrial pH Controller/Recorders

PHCN-53, $2850,
shown smaller
than actual size.

PHCN-50, $1495, with PHE-6510
electrode, $134, shown smaller
than actual size.

PHCN-50

⻬ 5 Models to Choose From
⻬ Measure, Control and Record pH
⻬ Range of 2 to 12 pH
⻬ NEMA 4X Wall Mount Enclosure Standard
⻬ Includes Two Wire 4 to 20 mA Transmitter
⻬ Optional ORP Controller

The PHCN-50 Series of pH recorders and controllers provides a
reliable method of monitoring, controlling and recording pH levels
of various industrial and chemical processes. Featuring an
extensive list of standard features, the PHCN-50 series includes a
digital display, digital switches for alarms setpoints, remote mount
pH 4 to 20 mA transmitter, 6 amp solid state relays, front panel
adjustable dead band pots and NEMA-4X enclosure.

The controllers standard features include a digital display capable
of displaying pH readings between 2 and 12 pH, adjustable dual
alarm setpoints, dead band adjustments from 1 to 50% of
setpoint, programmable time safety delay which activates when
pH correction time is excessive and a stand by switch that
disables the controller functions during calibration.

The recorder utilizes inkless pressure sensitive recording paper for
30 days of recording and front panel mounted calibration
adjustments.

PHCN-50 pH recorder includes a digital display, enclosed in a
NEMA 4X enclosure and accepts pH electrodes directly. Each unit
is supplied with one 30-day roll of recorder paper.

Starts at

$

1495

PHE-6510 electrode, $134 and PHEH-65-10
assembly with ATC, $55, shown smaller than
actual size, see page D-32.

PHCN-51 is a basic pH controller, it includes a NEMA-4X
enclosure, digital display, two setpoints for high and low alarm,
adjustable dead band, and two 6 amp SSRs. It accepts one pH
electrode input through the supplied pH transmitter.

PHCN-52 pH controller/recorder combines the features of the
PHCN-50 and PHCN-51 into one compact unit. It accepts one
electrode through the transmitter, that drives the recorder,
controller and digital display. Supplied with the PHCN-52 is one 30­day roll of recorder paper.

PHCN-53 pH controller/recorder uses two independent pH probes
in a wall mounted NEMA-4X enclosure. Each pH electrode
performs a separate function. The electrode input from the
supplied pH transmitter drives the digital display and controller; the
second pH electrode drives the recorder directly. The recorder
electrode may be placed downstream from the control point to
record the adjusted values. Supplied with the PHCN-53 is one
30-day roll of recorder paper.

PHCN-54 is a versatile dual pH controller. The PHCN-54 accepts
two separate electrode inputs and can adjust pH at two separate
locations. The dual pH model is supplied with two 4 to 20 mA pH
transmitters. When one of the two controllers is configured with
the optional ORP controller, it may be used for cyanide destruction
or chrome reduction.

D-23

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Specifications

pH Recorder
Display: None
Range: 2 to 12 standard; 0 to 14 (optional)
Resolution: 0.2 pH/lateral chart deviation
Accuracy: ±0.2 pH
Repeatability: ±0.2 pH
Temperature Compensation: Manual supplied with 1093 Ω

resistor; Automatic 1000 Ω platinum RTD

Power Requirements: 120 Vac 50/60 Hz
pH Controller
Display: 12.7 mm (0.5 in), 3
Range: 2 to 12 pH standard; 0 to 14 (optional)
Resolution: 0.01 pH
Accuracy: ±0.02 pH
Repeatability: ±0.02 pH
Temperature Compensation: Manual supplied with 1093 Ω

resistor; Automatic 1000 Ω platinum RTD

Power Requirements: 120 Vac 50/60 Hz (230 Vac Optional)
Contact: Two, 6 amp SSR, requires 200 mA minimum load
Deadband Adjustment: 0 to 50 % of setpoint

1

⁄2 digit LCD

The PHCN-53 is
complete with rugged
NEMA-4X case, pH
transmitter and pocket
thermometer. Electrodes
purchased separately,
PHE-6510, $134 and
PHEH-65-10, $55, see page
D-32. Shown smaller than
actual size.

Safety Time Delay: Adjustable, 1 to 11 minutes
Time Delay Relay: 6 amp SPDT
Temperature: K-79-7 6" stem pocket thermometer

range -10 to 110°C

Optional ORP Controller
Display: 12.7 mm (0.5"), 3

Range: 0 to 1000 mV
Resolution: 1 mV
Accuracy: ±1 mV
Repeatability: ±1 mV
Power Requirements: 120 Vac 50/60 Hz
Contact: Two, 6 amp SSR, requires 200 mA minimum load
Dead Band Adjustment: 0 to 50 % of setpoint
Safety Time Delay: Adjustable, 1 to 11 minutes
Time Delay Relay: 6 amp SPST

1

⁄2 digit LCD

MOST POPULAR MODELS HIGHLIGHTED!

To Order (Specify Model Number)

Model No. Price Description

PHCN-50 $1495 pH recorder and monitor, accepts

pH electrodes directly

PHCN-51 1125 Single input pH controller
PHCN-52 2765 Single Input pH controller/recorder
PHCN-53 2850 Dual input pH controller/recorder
PHCN-54 2455 Dual input pH controller

Each unit comes with NEMA-4X enclosure, appropriate number of pH
transmitter(s), K-79 pocket thermometer, and operator’s manual. Models
that include a pH recorder also supplied with one roll of 30-day chart paper.
To order 230 Vac power input, add suffix “-230VAC” to part number and

$50 to the price.
Ordering Examples: PHCN-52, single input pH controller/recorder, $2765.
PHCN-51, single input pH controller, $1495.

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Optional Ranges

Add’l

Order Suffix Cost Description

-ORP $50 ORP controller, 0 to 1000 mV range

-14 42 0 to 14 pH display range

Replacement Accessories

Model No. Price Description

PHCN-45-CHART $13 One 30-day chart (2 to 12 range)
PHCN-45-CHART-0-14 13 0 to 14 range chart paper
SL-652 12 Generic ORP chart paper
PHTX-212 189 Replacement 4 to 20 mA pH

PHTX-014 189 Replacement pH transmitter

To download information and to order Industrial
pH Instrumentation and Electrode products online,

transmitter, (2 to 12 range)

(0 to 14 range)

D-24

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