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Continuous measurement of residual oxidants down to 1 part per billion
TRO Analyzers
TRO Analyzer with Enclosure
Wall-mount fiberglass enclosure protects all components.
Thermo Scientific Logo
Thermo Scientific Orion™ 7070iX Total Residual Oxidant (TRO) Analyzers
Detects at levels as low as 1 part per billion (ppb)
Superior to DPD measurement—no interference from turbidity or sample color variances
Operates maintenance-free for up to 6 months
The Thermo Scientific Orion™ 7070iX TRO Analyzer uses iodometric technology to measure low levels of total residual oxidants in process water, cooling water or wastewater. To help you meet NPDES permit requirements, it provides continuous online measurement of most common oxidants—including chlorine (dechlorination), bromine, chlorine dioxide and chloramines. The ion selective electrode (ISE)-based technology meets the EPA 9770 ISE method. It is unaffected by turbidity and other interferences, allowing for extremely long service and calibration intervals.
All components are housed in a wall-mount fiberglass enclosure. Installation is simple—just connect the inlet and drain sample lines, power source and reagent container. During operation, the analyzer responds to changes in oxidant concentration in as little as 30 seconds, and detects residual oxidants in real time. The integral controller with full-color graphic display provides all operator interfacing, basic datalogging and output signals. It also features three programmable relays and two analog outputs.
Four operating modes maximize your application needs
User-selectable modes let you choose measurement frequency. Noncontinuous modes provide reagent savings. In any mode, if the analyzer detects that a sample is not present, it will stop operation and halt reagent usage.
Continuous mode provides constant readings updated every two seconds.
Interval mode runs for user-defined intervals (from 5 to 30 minutes), displaying last measurement.
Remote mode activates the digital input, which lets you use your own external switch to start and stop measurement. While ‘on,’ the display updates every two seconds.
Scheduled mode turns on and off automatically at user-defined times.
Analyzers include: sample inlet Y-strainer. Reagents and calibration standards are sold separately.
For a complete system, order:
1.7070iX TRO Analyzer: Stock # 37123
2.TRO Reagent: Stock # 37124
3.Calibration Standard Kit: Stock # 37126
Range:0.001 to 15 ppm (as TRO, TRC, TC)
Accuracy:<5% of reading or 10 ppb (whichever is greater)
Measurement interval:≤30 seconds
Inlet pressure:5 to 50 psig
Sample flow rate:40 mL/min (set by internal pressure regulator)
Tubing connections
Inlet/Outlet (sample):1/4" OD LLDPE tubing
Drain:1/8" OD FEP tubing
Output
Analog:(2) isolated 0-20 or 4-20 mA, programmable
Relays:(3) SPDT rated 1A @ 250 VAC
Digital input:3 to 5.5 VDC (remote start operation)
Display:4.3" color graphics with high contrast, 7 pushbuttons, USB interface
Operating temperature:41 to 113°F
Power:100-240 VAC 50/60 Hz
Enclosure:IP54, fiberglass with clear poly window (indoor locations)
Dimensions:18.8"W x 27.9"H x 12.4"D
TRO Analyzers
MFR #DESCRIPTIONSTOCK #
7070IX7070iX TRO Analyzer37123
Required Accessories
MFR #DESCRIPTIONSTOCK #
7070RETRO Reagent, 5L37124
7070CKCalibration Kit, TRO 1000 ppm Standard, 400 mL37126
Replacement Items
MFR #DESCRIPTIONSTOCK #
7070CK2Calibration Standard & Accessories37127
7070EKElectrode Kit (Includes O-Rings & Grommets)37128
7070FLTFilter Inlet Strainer37129
7070TKTubing Kit37125
Product Questions?