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UVT-LED Sensor UV Transmittance Sensor - UVT-LED

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• Measurement Technique: UV absorption method
• Measurement Wavelength/Pathlength: 254nm/1cm
• Measurement Range: 10 -100% UV transmittance
• Accuracy: +/- 1.0% T (full scale)
• Resolution: 0.1% T
• Sample Flow Rate/Maxium Pressure: n/a, 150psig
• Temperature Range: 32-122 °F (0-50 °C)
• IP Ingress Rating: IP66 housing, IP68 measurement head

Model Number: UVT-LED
Data Sheet:

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Product Specification

UVT-LED Sensor UV Transmittance Sensor

Parts covered by this product instruction sheet include:
UVT-LED-PW, UVT-LED-H, UVT-LED-SW, and all accessories and mounting hardware

UVT-LED Sensor UV Transmittance Sensor Introduction
UV-T is a measure of the amount of UV energy remaining after passing through a material (e.g., water sample or quartz) over a specific distance. UV Absorbance is a measure of the amount of UV light that is absorbed by a substance (e.g., water, microbial DNA, lamp envelope, quartz sleeve) at a specific wave-length (e.g., 254 nm). UV-Transmittance is related to UV Absorbance by the following equation (for a 1- cm path length): % UVT = 100 x 10 -A.

UV-Transmittance is typically;
• measured at 254 nm, corresponding to the peak output of mercury-based UV lamps
• measured over a path length of 1-cm
• represented as a percentage

UV-T has a strong effect on the dose delivery of a UV treatment system. As UV-T decreases, the intensity throughout the reactor decreases, which reduces the dose the treatment system delivers. UV treatment systems are sized to deliver the required UV dose under specified UV-T conditions for the application. UV-T will typically vary over time due to changing concentrations of compounds, seasonal effects and changes in biological activity of microorganisms within the water source.

UV-T monitors are commonly used as an input to a dose control strategy of a UV treatment system, helping to reduce over or under dosing. They are also used to monitor water quality to help diagnose operational problems.

UVT-LED Sensor UV Transmittance Sensor Specifications

Measurement Technique	UV absorption method (single beam technique), reagent-free
Measurement Wavelength /Pathlength	254nm/1cm
Measurement Range	10 -100% UV transmittance (UVT)
Accuracy	+/- 1.0% T (full scale)
Resolution	0.1% T
Sample Flow Rate/ Maxium Pressure	n/a, 150psig
Display	LCD with LED backlight
Measuring Interval	60 seconds (UVT-LED-PW & -SW only)
Inspection Interval	6 months(UVT-LED-PW & -SW only)
User Maintenance	1hr/month typical
Power Supply	20-28V DC, 5A, maximum 200Ohm load, customer supplied (UVT-LED-PW & -SW) 24V DC to charge battery (UVT-LED-H)
Output	0-100% UVT (UVT-LED-H-WD, UVT-LED-H-NA only) 4-20mA (UVT-LED-PW & -SW)
Temperature Range	32-122 °F (0-50 °C)
Weight	UVT-LED-H - 0.78lbs (353g), UVT-LED-PW - 1.58lbs (717g), UVT-LED-SW - 1.78lbs(807g)
Dimensions	7.60"H x 2.60" cap x 1.25" probe (19.1cm H x 6.4cm Dia) - UVT-LED-H & -PW only, 9.4"H x 3.00" cap x 1.25" probe (23.9cm H x 7.6cm Dia)
IP Ingress Rating	IP66 housing, IP68 measurement head
Certifications	CE
Warranty	2 Year Limited Warranty

UVT-LED Sensor UV Transmittance Sensor Ordering Information

Part Number	Description
UVT-LED-PW	In-line Mount Process UV Transmittance Monitor (with wiper/auto cal.), 10m (33 ft), cleaning swab
UVT-LED-SW	Submersion Mount Process UV Transmittance Monitor (with wiper/auto cal.), includes 10m(33ft) detachable cable, cleaning swab
UVT-LED-H-WD	Handheld, Off-Line Transmittance Monitor with power supply (outside of North America), case, cleaning swab x 1
UVT-LED-H-NA	Handheld, Off-Line Transmittance Monitor with power supply (North America only), case, cleaning swab x 1
UVT0001	Carrying Case for UVT-LED-H (included with UVT-LED-H-WD and UVT-LED-H-NA kits)
UVT0002	Power/Communication Cable for UVT-LED-PW, 10m (33 ft)- included with UVT-LED-PW
UVT0003	Power/Communication Cable for UVT-LED-PW, 20m (66 ft)
UVT0004	Power/Communication Cable for UVT-LED-PW, 30m (99 ft)
UVT0005	Worldwide Power Supply
UVT0006	North American Power Supply
UVT-SW-001	Detachable Power/Communication Cable for UVT-LED-SW, 10m (33 ft)- included with UVT-LED-SW
UVT-SW-002	Detachable Power/Communication Cable for UVT-LED-SW, 20m (66 ft)
UVT-SW-003	Detachable Power/Communication Cable for UVT-LED-SW, 30m (99 ft)
UVT0011	Cleaning Swabs (pack of 50)
UVT0008	Installation Fitting, 2" NPT 316SS
UVT0009	Installation Fitting, Stainless Steel Pipe (requires welding)
UVT0015	Installation Kit, Sanitary Flow Cell (3")
UVT0021	Installation Fitting for PVC Pipe (2" NPT)
UVT0023	Installation Kit, PVC Flow Cell (2") with connections for barbed fitting with quick-disconnect
UVT0024	Installation Kit, Stainless Steel Flow cell (2") with 1/4" barbed fittings
UVT0025	1.5" Sanitary Flange Cap, Stainless Steel
UVT-SW-004	UVT-LED-SW Installation Kit, retrofit to other supplier installation kits that accept 1.25" diameter pipe.
UVT-SW-005	UVT-LED-SW Installation Kit, Complete