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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.
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 |
|
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| 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 |
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Conductivity node for makeup water or closed loop control (node only). |
| MOUNTING OPTIONS |
| PM |
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Panel mount 6¼ inch square cutout. |
| BM |
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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 |
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High-Baud modem for use with 2000 Series Controllers. |
* LONWORKS is a registered trademark of Echelon Corporation.
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