ORP Transmitter - Q45R Rental


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California Regulatory Information

SKU: Q45_R
4.4” x 4.4” x 3.5”
1 lbs.

Product Overview

ATI Monitoring

The Q45R ORP Transmitter is the ideal choice ORP monitoring applications. The Q45 system provides the accuracy, versatility, and durability required for virtually any ORP monitoring system. The transmitter is available in two types: ORP, which can be selected when ordering. The Q45R transmitters use differential type sensors designed for long life in demanding applications. Differential sensors are well-suited for applications that quickly poison conventional ORP sensors, and are easily serviced. A variety of sensor styles is available to meet the need of almost any applications.

 There are 3 Power Options to choose from on Q45R Transmitter

  • 12-24 VDC, 2-Wire (single output only)
  • Portable Battery with two 0-2.5 V Outputs
  • External 5-17 VDC with two 0-2.5 V Outputs


  • Loop or Battery-Operated Power Options
  • Differential Sensors for long operating life
  • Submersion, In-Line, or Sanitary-Style Sensors
  • Clear Display -Large, easy-to-read LCD display.
  • Special High Purity sensor option
  • Adapts to Conventional pH or ORP sensors
  • Flexible Mounting - NEMA 4X (IP-66) enclosure is suitable for wall or pipe mounting.

Applications for the Q45R

  • Cooling Towers
  • Potable Water Treatment
  • Wastewater Treatment
  • Chemical Process Control
  • Plating Baths
  • Metals Precipitation
  • Streams & Rivers
  • Boiler Feedwater
 More Information
 Sensor Type
ORP: Series Q25R Differential or Conventional types
 Display Range 0.02 pH or 2 mv
 Accuracy 0.01 pH or 1 mv
 Warranty 1 Year
 Repeatability 0.01 pH or 1 mv
 Sensitivity 0.01 pH or 1 mv
 Analog Output
  • 2-Wire unit: Single 4-20 mA DC, 450 ohms maximum
  • Battery unit: Two 0-2.5 VDC, 50K ohms minimum
  • External DC: Two 0-2.5 VDC, 50K ohms minimum
 Power Requirements  
  • 2-Wire unit: 17-30 VDC, 25 mA maximum
  • Battery unit: 2 AA Alkaline batteries
  • External DC: 5-17 VDC, 10 mA maximum
 Output Isolation 600 V Galvanic isolation
 Enclosure NEMA 4X (IP-66) Polycarbonate, V-0 flammability
 Weight 2-Wire of External DC Unit: 1lb. (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
 Size 4.4”H x 4.4”W x 3.5”D (111 x 111 x 90 mm)
 Mounting Options Wall or pipe mounting bracket supplied
 Conduit Entry 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





California Regulatory Warning

Example Image
Use in unoccupied spaces only.
Health hazard warning: emits ozone.

This product is not CARB Certified (Ozone Emissions for Air Cleaners).
Product Disclaimer: Does not meet California air cleaner regulation requirements; cannot be shipped to California.