Q45D Dissolved Oxygen Transmitter

Brand: Analytical Technology Inc

Dissolved Oxygen Monitoring applications requiring a simple 2-wire transmitter or battery-operated instrument are easily satisfied using ATI’s model Q45D transmitter. 

Adaptable to either Optical or Galvanic D.O. sensors, this unit is ideal for installations where only analog signals are needed and low power operation is preferred. 

For applications requiring AC operation, relay outputs, automatic sensor cleaning, or digital communication, refer to ATI’s model Q46D brochure. 

ATI’s optical element is designed to last a minimum of 2-years in normal operation, but will more often provide a life of 3-5 years, unless mechanical damage occurs. 

Optical sensors do not require flow across the sensing element so accurate measurements can be made more accurately in systems with low flows. 

Unlike some optical sensors, this sensor is not degraded by exposure to sunlight.
Features
  • Loop-powered or battery-operated
  • External 5-17 VDC version for solar power applications
  • Adapts to Optical or Galvanic sensors
  • Submersion or flowcell sensor options
  • Simple air-calibration
  • Large, easy-to-read LCD display
  • Display D.O. in ppm, mg/l, or % saturation
  • Clear menu-driven user interface
  • NEMA 4X (IP-66) enclosure
  • Wall or pipe mounting bracket
  • Built-in PID controller

Specifications

Display Range

  • 0-40.00 ppm or 0-40.00 mg/L
  • 0-200.0 Percent saturation

Accuracy

  • Greater of 0.3 % of value or 0.02 ppm

Repeatability

  • 0.02 ppm

Sensitivity

  • 0.01 ppm

Linearity

  • 0.1%

Temperature Drift

  • 0.1 %/°C

Sensor Type

  • Optical or Galvanic membraned

Temperature Input

  • Pt100 RTD in Sensor for Temperature Compensation

Power

  • 2-Wire unit: 17-30 Vdc, 25 mA Max.
  • Battery unit: Two AA Alkaline batteries
  • External DC: 5-17 Vdc, 10 mA Max.

Analog Outputs

  • 2-Wire unit: Single 4-20 mA DC, 450 ohms Max.
  • Battery unit: Two 0-2.5 Vdc, 50K ohms minimum
  • External DC: Two 0-2.5 Vdc, 50K ohms minimum

Output Isolation

  • 600 V Galvanic Isolation

Enclosure

  • NEMA 4X (IP-66) Polycarbonate, V-0 Flammability

Mounting Options

  • Wall or Pipe Mounting Bracket Supplied

Conduit Entries

  • Two PG-9 Cord Grips, 0.16-0.31” Diameter Cable

Ambient Temperature

  • Operating: -40° to + 60° C
  • Storage: -40° to + 70° C

Ambient Humidity

  • 0-95 %, Non-Condensing

Size

  • 4.4”H x 4.4”W x 3.5”D (111 x 111 x 90 mm)

Weight

  • 2-Wire or External DC unit: 1 lb (0.45 Kg)
  • Battery unit: 2 lbs (0.9 Kg)

Certifications

  • CE marked to BS EN 61326-1:2006 Standard
  • UL and CSA General Purpose

  • Aeration Systems
  • Fish Farming
  • Wastewater Effluent
  • Rivers & Streams
  • Water Distribution

show more