Lakewood Instruments

ORP Controller Microprocessor-Based
Lakewood Instruments Model 2330

Lakewood Instruments Model 2330 Microprocessor Based ORP Cooling Tower Controller

Discontinued Model

LONWORKS^� Technology is the latest in microprocessor capability that gives the user the highest level of application flexibility. A large graphic screen, multiple inputs and very easy setup with easy field upgrade characterize this new technology.

Features

Differential ORP sensor with diagnostics indicate fouled reference or open pt band.
Integral flowsight & flowswitch lockout.
Records both makeup (MTR1) and blowdown (MTR2) water meter total gallons.
Configure blowdown water meter (MTR2) as second makeup meter.
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;
- Schedule feed timer (-RTC Option);
- General alarm contact.
Three security levels:
- View only
- Operator
- Technician.
Four different languages.
- English Spanish (standard)
- English French (optional)
- English German(optional)

Benefits

Multiple control options in a single economical package.
Very accurate control of chemical feed.
Very low maintenance.
Tolerant to power surges and brownouts.
Power cord, plug outlets and attached plumbing make installation easy. There is plenty of protected room inside the enclosure for electrician wiring.
Very accurate monitoring of the evaporated water.
Has expansion slots to add additional control, such as chiller loop monitor.

Specifications

Inputs
Power		80-300 VAC
Sensor		ORP combination glass electrode
Temperature comp.		Automatic
Flow switch		Dry contact
Water Meter Input		Two contacting head or open collector.

Outputs
Relays		Four, 3 Amps @ 120 VAC
4-20 mA		Two, isolated w/-35L

Sensor/Plumbing
Pressure		140 psi (9.7 bar) @ 100ºF (38º C)
Max. Temperature		140ºF (60º C)
Min. Flow		1 gpm

Controller
ORP Range		-1000 to +1000 mV
ORP Accuracy		+/-5 mV
ORP Resolution		1 mV
Deadband		Adjustable
Setpoints		Direct or Reverse (configurable in the field)
Feed timer		Adjustable
Keypad		Numeric
Display		Illuminated 128x64 pixel LCD
Ambient Temperature		32-158ºF (0-70º C)
Enclosure Rating		ABS Plastic
		NEMA 4X Optional

Ordering Information

2330		LONWORKS Technology-based ORP controller with plumbing and flow switches. Four relays are integral to the system. The relays may be configured for ORP high or low setpoints and alarms. ORP range is -1000 to 1000 mV.
CONTROLLER OPTIONS (optional; select no more than three)
-RTC		Adds 24-hour clock and calendar to controller (required to configure relays to feed chemicals/biocides based on time of day and for data acquisition if using the -RS2L Option). NOTE: Adding an -RTC card does not add relays.
-35L		Two 4-20 mA output configurable for remote data acquisition of ORP.
-RS2L		Communications node with shareware software. Requires -RTC Option.
-NIN		Network interface node. Allows 1 NRLY and/or up to 3 NCON/NCKT to be added.
ENCLOSURE OPTIONS (optional)
-WP		Weatherproof and watertight. 1/2 inch knockouts. No outlets or power cords.
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).
SOFTWARE AND EXTERNAL MODEMS
LRWS		Windows-based registered 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.