Specifications

32
Series CL
Conductivity Control with Limit Timer
The Series CL was designed to control conductivity and feed inhibitor in an
open-air cooling tower. The Series CL combines everything you need to
control conductivity and feed inhibitor into one unique, compact package to
create a simple and cost effective metering and control system.
Principle of Operation
The Series CL includes a conductivity sensor, bleed relay and a user pro-
grammable limit timer. When conductivity reaches the user specified level,
the system activates the bleed relay and begins pumping inhibitor. The
‘feed & bleed ‘ cycle will continue until the conductivity returns to the de-
sired level. The programmable limit timer allows the user to specify a maxi-
mum pumping time for the feed cycle. If the limit time expires before the
conductivity level returns to the set range, the pump stops feeding while the
bleed continues. Once the conductivity level is reached and the system
stops bleeding, the feed limit timer is automatically reset for the next bleed
cycle.
Features
 120VAC or 250VAC @ 50/60 HZ, 5A max
 4-electrode conductivity input
 0-6000 mS/cm + 1%, temperature compensated
 Relay rated to 5A at 240VAC
 Isolated dry contact flow switch input
 4 Digit LED, 9 key membrane keypad
 Single-button function keys
 Set, Differential, Calibration, Pulse Timer, and Count functions
 Stroke rate adjusts 0-100% in 1% increments, turndown ratio 100:1
Pressure and Flow Rate Capacity
LL02 LL03 LL04 LL64
Capacity GPH 0.25 0.50 1.00 1.25
nominal GPD 6 12 24 30
(max.) LPH 0.9 1.9 3.8 4.7
Pressure PSIG 150 150 100 100
(max.) BAR 10 10 7 7
MODEL
Electronic Metering Pumps with
Integrated Controller
CM
CM
CM
CM
Engineering Data
Reproducibility:
+/- 2% at maximum capacity
Controls:
9 key membrane keypad, Single button function keys
Conductivity Sensor:
4 electrode
Conductivity Range:
0-6000 µS/cm +/- 1%, Temperature Compensated
Input:
Isolated Dry Contact Flow Switch
Functions:
Set, Differential, Calibration, and Pulse Timer
Status Display:
4 Digit LED
Stroke Frequency Turn-Down Ratio:
100:1
Stroke Length Turn-Down Ratio:
100:1
Power Input:
115 VAC/50-60 HZ/1 ph
230 VAC/50-60 HZ/1 ph
5 Amp max
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