Replacement Laser Counters
Replacement Laser Counters
Replacement Laser Counters
Replacement Laser Counters

Replacement Laser Counters

$45.00
$45.00

Plantower laser counters may need replacing for various reasons including age, contamination inside the device or simply failing after a long time in service.

Here you can purchase replacement particle detectors. They come in pairs for the PA-II series devices with a plastic component to aid in locating supporting parts. 

All Plantower laser counters have been pre-tested in PurpleAir test chambers.

  • NOTE: Please be sure to select the correct laser counter set for your device:
    • Each type has different connectors or mounting methods
    • The images can help identify what you have.
  • For information and instructions on replacing your laser counters, please see the videos linked in the following Community Post: https://community.purpleair.com/t/sensor-maintenance/1531
Quantity must be 1 or more
Shipping calculated at checkout.
  • Dual Laser Particle Counters (PMS-5003)
Laser Particle Counters

Class 1 Laser. A Class 1 laser is safe under all conditions of normal use.
Manufacturer Plantower

This device contains two particle detectors to provide redundancy and help determine sensor health.
Type PMS-5003 (2)
Range of measurement 0.3, 0.5, 1.0, 2.5, 5.0, & 10 μm
Counting efficiency 50% at 0.3μm & 98% at ≥0.5μm
Effective range
(PM2.5 standard)*		 0 to 500 μg/m³
Maximum range (PM2.5 standard)* ≥1000 μg/m³
Maximum consistency error (PM2.5 standard) ±10% at 100 to 500μg/m³ & ±10μg/m³ at 0 to 100μg/m³
Standard Volume 0.1 liter
Single response time ≤1 second
Total response time ≤10 seconds

Customer Reviews

Based on 70 reviews
71%
(50)
10%
(7)
7%
(5)
3%
(2)
9%
(6)
98.5
95.7
D
Dennis Hagen
I failed at installing a replacement laser counter

I did try to follow the instructions very carefully, but, nonetheless, my Purple Air is now dead. I had a lot of trouble transferring the old chip to the new laser counter. Oh well, it was fun having the device for a couple of years.

Hi Dennis,

We see that you've submitted a support ticket with us. If you would like to continue troubleshooting, please reply to our email!

A
Andrea Nick
Laser may be fine but my unit still doesn't work

I am glad there is an option to replace the laser. It did not work for me and have tried several troubleshooting ideas. I wish I could just get a new unit but it is not in the budget at this time. Hoping others have better luck.

Hi Andrea,

We're sorry you've had a hard time replacing the laser counters in your device. We'd be happy to help if you send an email to contact@purpleair.com!

H
Hugh Ferguson
works!

Works!

J
Jonathan K Wong, Sonoma CA
Laser Counter Replacement - DIY! It's the way to go!

One of our inside sensors started showing consistent excessively high readings, beyond anything we had seen, and were inconsistent with other sensors in our home. We tried compressed air to clear any blockages, vacuumed, but nothing changed. Readings still excessively high.

We contacted the PurpleAir user forum and the recommendation was to replace the laser counter for our sensor. We were hesitant because it was a precision device, but we were assured from watching a PurpleAir Youtube instructional video that we could handle it.

For $25.00 and shipping, we received a new laser counter and everything we needed to replace the counter. The youtube video was particularly clear, and voila! Senor back in full precise operation!

Thank you PurpleAir!!

J
John Henzie
Good video

The video showing how to replace the counters was clear and complete.

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