Good service
"Did as they pry"
VIQUA 254NM-C1 UV Sensor for VH410M, VP600M, VP950M Systems
The replacement UV sensor for VIQUA VH410M, VP600M, and VP900M UV systems. This sensor monitors and indicates the intensity of UV light being delivered (UV dose) by your system. The sensor also works for the now obsolete Sterilight SCM model UV systems. Please note: The 254NM-C1 cannot be added to your system after the fact. This is only a replacement part and cannot be used to give functionality to a system that doesn't have it.
*NOTE: The 254NM-C1 sensors cannot be used as a replacement part on any UV system with a Y-Cable (260134) manufactured before April 30, 2015. If you need to replace the sensor on your system, you must also replace the Y-Cable with one manufactured after April 30, 2015. If a system is not utilizing a Y-Cable, it is not affected by this issue.
Overall rating: 4.3333335 / 5 from 3 reviews.
Review topics: [].
"Did as they pry"
"Sensor worked as it should. Great quality!"
"Haven’t tried it yet!"
Q:
What does the VIQUA 254NM-C1 sensor monitor?
A:
It measures UV intensity at the sensor location so a compatible controller can provide real-time performance feedback.
Q:
Which systems use the 254NM-C1 sensor?
A:
The catalog lists: C1, VH410M, VP600M, VP950M, VH410M-V. Confirm the exact model and part number on your equipment before ordering VIQUA 254NM-C1.
Q:
Can this sensor be added to a non-monitored system?
A:
No. It is a replacement for systems already designed with sensor functionality, not an upgrade kit for non-monitored models.
Q:
What is the pre-2015 Y-cable issue?
A:
The product page states that systems using Y-cable 260134 made before April 30, 2015 also require the updated cable when this sensor is replaced.
Q:
What can cause a low sensor reading?
A:
Sleeve deposits, changed water transmittance, sensor-window fouling, alignment, electrical issues, or an aging lamp can affect readings.
Q:
What should I verify before ordering?
A:
Match the sensor part, system model, controller generation, connector, cable date where applicable, and sensor-port seals.