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Cycle/Sample Boiler Controller Model 250
From Lakewood Instruments

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 - sales@metexcorporation.com

Lakewood Instruments Model 250 Cycle/Sample Boiler Controller

Discontinued Model

Cycle,Sample,Boiler,Controller,Model 250,Lakewood,InstrumentsThe Model 250 Boiler Controller measures conductivity using the sample/cycle technique. The Model 250 is intended to control boiler water dissolved solids by measuring and controlling the surface blowdown water conductivity. By measuring the blowdown conductivity, the controller is capable of holding the boiler water conductivity with excellent results. This control results in considerable fuel savings by preventing excessive blowdown. The controller also protects the steam lines by preventing carry-over due to excessive conductivity.

The Model 250 uses the sample/cycle technique and is intended for boilers of less than 1,000 lb./hr under normal operating loads.

Model 250 Boiler Controller Manual

Specifications

Inputs
Power
120 VAC
120/240VAC w/-F
Sensor
2 electrode Conductivity
Sensor (SR2)
Pressure
600 psi (41.4 bar)
Max. Temperature
486ºF (252ºC)
Body
Carbon Steel
Electrode
416SS
Insulator
PEEK
Connection
3/4 inch MNPT
Outputs
Relays
3 Amps @ 120 VAC
0-1 mA
Non isolated
4-20 mA
Isolated, w/-35
Controller
Conductivity Range
0-10,000 µS
Accuracy
+/-100 µS
Resolution
100 µS
Deadband
Adjustable
Setpoint
0-10,000 µS
High Alarm
Adjustable
Sample Time
0-10 min
Cycle Time
0-180 min
Ambient Temperature
32-158ºF (0-70ºC)
Electrical Rating
UL Listed
Enclosure Rating
ABS Plastic

METEX CORPORATION LIMITED

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