Microprocessor,Based,pH Controller,Model 2350P,Lakewood,Instruments

Microprocessor-Based pH Controller Model 2350P from Lakewood Instruments


Model 2350P Microprocessor-Based pH Controllers

LONWORKS* Technology is the latest in microprocessor capability that gives the user the highest level of application flexibility. A large illuminated graphics screen, multiple inputs and very easy setup with easy field upgrade characterize this new technology. The unit does not include plumbing or a sensor. For use with process-type pH sensors (order separately).

  • Differential pH sensor input with diagnostics indicate fouled reference or broken glass.
  • Input for flowswitch lockout.
  • Two water meter inputs, MTR1 and MTR2.
  • Four user-selectable relay options (four additional with NRLY):
    • Feed by setpoint, direct or reverse;
    • Water meter actuated feed. MTR1, MTR2 or sum;
    • Feed by percentage of time;
    • Feed by schedule (-RTC Option);
    • General alarm contact.
  • Three security levels:
    • View only
    • Operator
    • Technician
  • Four different languages.
    • English Spanish (standard)
    • English French (optional)
    • English German (optional)

Power 80-300 VAC
Sensor pH glass electrode w/BNC
Temperature comp. None, 500 NTC, 4K NTC, 10K NTC,
100 PTC, 1K PTC, 3K PTC and 10K PTC
Flow / level switch Dry contact
Water Meter Input Two contacting head or open collector
Relays 3 Amps @ 120 VAC
4-20 mA Two, isolated w/-35L
pH Range 0-14 pH
pH Accuracy 0.05 pH
pH Resolution 0.01 pH
Deadband Adjustable
Setpoints Direct or Reverse (configurable in the field)
Feed timer Adjustable
Keypad Numeric
Display Illuminated 128x64 pixel LCD
Ambient Temperature 32-158F (0-70C)
Enclosure ABS Plastic
NEMA 4X Optional

Ordering Information

2350P   LONWORKS Technology-based pH controller with 4 selectable relays for HIGH/LOW setpoints or alarms. pH range is 0-14 pH. Requires pH sensor (520 Series or 521 Series) which must be ordered separately. Controller has no power cord, outlets or plumbing.
CONTROLLER OPTIONS (optional; select no more than three)
-RTC   Schedule feed timer with 28-day programmable clock for selectable relays.
-35L   Two 4-20 mA output configurable for remote data acquisition of pH.
-RS2L   Communications node with the LRWS program; requires -RTC Option.
-NIN   Network interface node; allows 1 NRLY and/or up to 3 NCON/NCKT’s to be added.
-DU   Duplex outlet for chemical pump, power cord.
LANGUAGE OPTIONS (optional, choose one, English and Spanish Standard)
-EF   English and French.
-EG   English and German.
REMOTE NODE OPTIONS (optional; MUST purchase -NIN Option above)
NRLY   Four additional relays with enclosure (1 per 2000 Series Controller).
NCON   Conductivity node (node only).
PM   Panel mount 6 inch square cutout.
BM   Bracket for pipe mounting.
LRWS   Windows-based software for computer to communicate with 2000 Series Controllers.
MD4X   High-Baud modem in NEMA 4X enclosure ready to power.
MD   High-Baud modem for use with 2000 Series Controllers.

* LONWORKS is a registered trademark of Echelon Corporation.