Microprocessor-Based Boiler Controller Model 2250
From Lakewood Instruments


Model 2250 Microprocessor-Based Boiler Controllers

Discontinued Model

Microprocessor,Based,Boiler Controller,Model 2250,Lakewood,InstrumentsLONWORKS is the latest in microprocessor technology that gives the user the highest level of application flexibilty. A large graphic screen, multiple inputs and very easy setup, with easy field upgrade characterize this new technology.

Features

  • Steam flashing detector and compensation.

  • Sample/cycle or continuous conductivity control of blowdown.

  • Use sample/cycle for blowdown less than 1,000 lb./hr.

  • Use continuous for blowdown greater than 1,000 lb./hr.

  • Can feed chemical according to water meter percent of bleed or percent on-time.

  • Interactive communications software datalog and control (-RS2L & -RTC Options).

  • Four different languages.

English Spanish (standard)
English French (optional)
English German (optional)

Benefits
  • Accurate control of boiler conductivity.

  • Control results in fuel savings by preventing excessive blowdown.

  • Prevents carryover due to excessive conductivity.

  • Two water/flowmeter inputs provided.

Specifications

Inputs
Power
80-300 VAC
Sensor Input
2 and 4 electrode Conductivity
Temperature comp.
Automatic or disable
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 (SR2)
Pressure
600 psi
Max. Temperature
486ºF (252ºC)
Body
Carbon Steel
Electrode
416 SS
Insulator
PEEK
Connection
3/4 inch MNPT
Controller
Conductivity Range
0-8,000 (other ranges available)
Conductivity Accuracy
+/-40 µS
Conductivity Resolution
10µS
Deadband
Adjustable
Conductivity Setpoint
Sample\cycle or continuous
Sample Time
Adjustable
Cycle Time
Adjustable
Keypad
Numeric
Display
Illuminated 128x64 pixel LCD
Ambient Temperature
32-158ºF (0-70ºC)
Enclosure Rating
ABS Plastic

Ordering Information

2250
LONWORKS Technology-based cycle/sample or continuous blowdown conductivity controller. Range is 0-8,000 µS, has HIGH/LOW alarms, water meter inputs and chemical feed relays. Requires SR2 or SR4, below, and PL5 or PL6 is recommended. (No power cord or outlets.)
CONTROLLER OPTIONS (optional, select one or more)
-35L
Two 4-20 mA output configurable for conductivity remote data acquisition.
-RS2L
Communications node with LRWS program. Requires -RTC.
-RTC
Schedule feed timer with 28-day programmable clock for selectable relays. Required for operation of -RS2L.
LANGUAGE OPTIONS (optional, choose one, English and Spanish Standard)
-EF
English and French.
-EG
English and German.
SENSOR OPTIONS (recommended, select one below)
SR2
Boiler water sensor, 3/4 inch NPT, and elbow.
Rated to 486ºF @ 600 psi (252ºC @ 41.4 bar). This sensor cannot be used after a sample cooler.
SR4
4-electrode sensor, 3/4 inch NPT. Rated to 392ºF @ 250 psi (200ºC @17.2 bar).
PLUMBING (recommended, select one below)
PL5
Plumbing for cycle/sample assembly 1/2 inch (1/8 & 1/16 orifice plates and union).
PL6
Plumbing for continuous sample assembly, 1/2 inch (1/8 & 1/16 orifice plates & union).
PL575
Plumbing for cycle/sample assembly 3/4 inch (1/8 & 1/16 orifice plates and union).
PL675
Plumbing for continuous sample assembly 3/4 inch (1/8 & 1/16 orifice plates & union).
GV
1/2 inch forged globe valve for flow metering instead of an orifice plate and union.
Note: Two GV options are required for continuous blowdown and one for cycle/sample.
MOUNTING OPTIONS (optional, select one only)
PM
Panel mount 6 1/4 inch square cutout.
BM
Bracket for pipe mounting.
SOFTWARE
LRWS
Windows-based software program for computer to communicate with 2000 Series Controllers.
BLOWDOWN VALVE OPTIONS (optional, select one only)
MBV1
Motorized 1/2 inch blowdown valve with 1036 actuator;
rated to 250 psi @ 400ºF (17.2 bar @ 204ºC).
MBV2
Motorized 3/4 inch blowdown valve with 1036 actuator;
rated to 250 psi @ 400ºF (17.2 bar @ 204ºC).
MBV3
High pressure motorized 1/2 inch blowdown valve, with 1275 actuator
rated to 600 psi @ 550ºF (41.4 bar @ 288ºC).
MBV4
High pressure motorized 3/4 inch blowdown valve, with 1275 actuator
rated to 600 psi @ 550ºF (41.4 bar @ 288ºC).
PV4
Pneumatic high pressure 1/2 inch blowdown valve, with 1034 actuator
rated to 600 psi @ 486ºF (41.4 bar @ 288ºC).

 

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