The AquaMetrix 2250 Series Flow Controller is designed to be the most flexible, easy to use, and easy to see multi-parameter controller on the market. The 2250 Series allows you to choose Conductivity, pH, ORP or Flow. The user interface was designed under the principle that the user should not need to read the manual.
The 2250 provides control of external devices using its three independent control relays. The third relay is provided to act as an alarm relay or a third process control relay. Each relay has both adjustable high and low on set-points and can be set for either a rising or falling process. Each relay has its own cycle timer, with adjustable on and off times. This feature enables tighter control of batch processes by eliminating chemical overshoot.
Applications by Water Analytics AquaMetrix:
Industrial process control, e.g. plating, food and beverage, chemical processing, pulp & paper, mining, food and beverage
Municipal water and wastewater treatment
Industrial and municipal waste treatment and Neutralization
Flexible and easy calibration, including multi-point conductivity calibration for acids and bases
Two 4-20mA process output with range scaling and PID Control
Universal mounting hardware for surface, panel and pipe mounting
Compatible with AquaMetrix models 60-series differential pH/ORP sensors, 500-series
combination style pH/ORP sensors, AS/
AM-series conductivity sensors, and most pulsed flow sensors
Temperature or flow totalizer output
Three control/alarm relays with temperature or flow totalizer output option
Probe Parameters:
Sensor:
pH: 6-Wire Differential or Combination
ORP: 6-Wire Differential or Combination
Conductivity: 4-Wire contacting : Any cell constant between 0.01 and 100
Flow: Pulse output: Paddle-wheel, Magmeter
Temperature Elements:
pH: 100, 1000 Ω RTD 300, 3000 Ω NTC or none
ORP: 100, 1000 Ω RTD 300, 3000 Ω NTC or none
Conductivity: 100, 1000 Ω RTD 300, 3000 Ω NTC
Flow: n/a
Sensor Input:
pH: -600 to +600 mV
ORP: -999 to +999 mV
Conductivity: 0 to 9999 Ω
Flow: 0 to 2000 Hz
Measurement Range (Process):
pH: 0 to 14 pH
ORP: 1000 to +1000mV
Conductivity: 0.055 to 500,000 µS/cm (Depending on the cell constant)
Flow: 0 to 999 in any units
Measurement Range (Temperature):
pH: -20 to 120 °C
ORP: -20 to 120 °C
Conductivity: -20 to 120 °C
Flow: Flow Totalizer
0 to 999 in any units
Temperature Compensation:
pH: Automatic or none
ORP: Display temperature
Conductivity:Automatic or Manual -20 to 120 °C
Flow: Display Flow Totalizer
Outputs:
Analog: Two 4-20 mA outputs; Scalable 4-20mA with PID (Process); Scalable 4-20mA (Process or Temperature); Optically isolated. Max Load - 800 Ω
Relays: 3 Dry contact relay with snubber circuit; 10A @ 120/240 VAC or 8A @ 30 VDC (Resistive Load); 5A @ 120/240 VAC or 4A @30 VDC (Inductive load)
Relay Modes: Rising/Falling/In Range.; Options: Relay Delay, Cycle, Overfeed Timer, Override; One relay can be triggered by temperature or flow totalizer
Ratings:
Ingress Protection: NEMA 4X
Electrical: ETL (US and Canada) and CE pending
Max. Power Input: 0.2 A @ 115 VAC or 15 W
Temperature: -20 to 70 °C
Humidity: 0 to 90% Relative Humidity, non-condensing
Physical:
Mounting: Wall mount, panel mount with kit provided. pipe mount with optional kit
Dimensions: Front cover: 5.5”x5.5” (14 cm x 14 cm). Depth: 5” (13 cm)
Power: 120/240 VAC, 50 or 60 Hz
Weight: 2 lbs
Protection: NEMA 4X
Panel Cut-out: 5.4” x 5.4” (138 x 138 mm) full DIN