Conductivity Cooling Tower Controllers

Model 2175P Conductivity Cooling Tower Controllers

Product Information

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 conductivity sensors (order separately).

Features

4-electrode conductivity input includes fouling compensation and alarm.
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)

Specifications

Inputs
Power		80-300 VAC
Sensor		2 or 4 electrode Conductivity
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.

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

Controller
Conductivity Range		0-100,000 µS (varies with sensor)
Conductivity Accuracy		±40 µS
Conductivity Resolution		10 µS
Deadband		Adjustable
Setpoints		Direct or Reverse (configurable in the field)
Feed timer		Adjustable
Temperature comp.		Adjustable
Keypad		Numeric
Display		Illuminated 128x64 pixel LCD
Ambient Temperature		32-158°F (0-70°C)
Enclosure		ABS Plastic
		NEMA-4X Optional

Ordering Information

2175P		LonWorks Technology-based conductivity controller. Three (3) relays can be actuated based by percent on time, percent of blowdown time, water meter actuated or High/Low alarm. Conductivity range is 200-10,000 µS unless specified otherwise. Requires 543 Series sensor with -4 Option. No outlets, plumbing or power cord.
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 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.
ENCLOSURE OPTIONS (optional)
-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 for makeup water or closed loop control (node only).
MOUNTING OPTIONS
PM		Panel mount 6¼ inch square cutout.
BM		Bracket for pipe-mounting.
SOFTWARE AND EXTERNAL MODEMS
LRWS		Windows-based registered software for computer to communicate with 2000 Series Controllers.
MD4X		High-Baud modem in NEMA-4 enclosure ready to power.
MD		High-Baud modem for use with 2000 Series Controllers.

* LONWORKS is a registered trademark of Echelon Corporation.