UVT-LED Sensor UV Transmittance Sensor - UVT-LED

• 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: Date Sheet File
Quantity:
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  •  UVT-LED Sensor UV Transmittance Sensor
  •  UVT-LED Sensor UV Transmittance Sensor
  •  UVT-LED Sensor UV Transmittance Sensor
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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

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