Microprocessor,Based,Conductivity pH Controller,Model 2412P,Lakewood,Instruments

Microprocessor-Based Conductivity pH Controller Model 2412P from Lakewood Instruments


Model 2412P Microprocessor-Based Conductivity and pH Controllers

Microprocessor,Based,Conductivity pH Controller,Model 2412P,Lakewood,InstrumentsLONWORKS* 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 and conductivity sensors (order separately).

  • 4-electrode conductivity input includes fouling compensation and alarm.
  • Differential pH sensor input with diagnostics indicate fouled reference or broken glass.
  • Input for flowswitch lockout.
  • Two water meter inputs, MTR1 and MTR2.
  • Conductivity Blowdown Relay options:
    • Bleed x gallons for every x gallons makeup
    • Bleed x minutes for every x gallons of makeup
    • Bleed by setpoint
    • Bleed by cycles of concentration with NCON/NCKT Option
    • Bleed by multi-setpoint selected with NCON/NCKT Option
  • Three user-selectable relay options (four additional with NRLY):
    • Feed by setpoint, direct or reverse;
    • Water meter actuated feed. MTR1, MTR2 or sum;
    • Feed after blowdown by percent of bleed time;
    • 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 2 or 4 electrode Conductivity pH glass Electrode w/BNC
Temp. 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
Conductivity Range 0-100,000 S (varies with sensor)
Conductivity Accuracy 40 S
Conductivity Resolution 10 S
pH Range 0-14
pH Accuracy 0.05 pH
pH Resolution 0.01 pH
Deadband Adjustable
Setpoints Direct or Reverse (field configurable)
Feed timer Adjustable
Keypad Numeric
Display Illuminated 128x64 pixel LCD
Ambient Temperature 32-158F (0-70C)
Enclosure ABS Plastic
NEMA 4X Optional

Ordering Information

2412P   LONWORKS Technology-based 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 and conductivity.
-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.