Laser Counters

Regular price: $55.00
Sale price: $55.00

All Plantower laser counters are pretested in PurpleAir facilities.

Replacement laser counters are intended for when a sensor’s previous laser counters fail and cannot be repaired. Make sure to select the appropriate laser counters for your device below, as each type features unique mounting and connection methods.

For videos on how to perform the replacements, view the following article: Sensor (Laser Counter) Replacement

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Overview
Specs

User replaceable dual Laser Particle Counters (PMS-6003)

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-6003 (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

A bit confusing as to how sensor comparison work

My sensor started recording crazy high readings. After a bit of research I discovered that there are two sensors in my PM-2 and the unit compares their values. They were off by 50% or something. I tried cleaning them with a vacuum cleaner and compressed air, but the map still said they were off by a large amount. So… I bought the new sensors and installed them. Pretty straightforward after watching your youtube a few times. HOWEVER, the map still showed that they were off by a large amount. At that point I figured out that percent is a time averaged value and you really need to look carefully to see that there are actually two curves in the plots on the map. So I let it be for a few days and the percentage went to 100%. All is good. But, maybe the cleaning I did actually solved the problem and I just didn’t notice that it had. I would have appreciated knowing this subtlety before going down the sensor replacement rabbit hole. Maybe you have that in your instructions and I just missed it?

Hi Bruce,

We're glad to hear that you got your sensor working again! It could be the case that cleaning resolved the issue, and you just couldn't tell. If you every have a question like that, you're more than welcoem to send it in to contact@purpleair.com. In this case, you might want to consider storing the old sensors someplace safe incase you need them in the future.

PA II Laser Counters

Replacements easy to install and work great!

Quick Service - Easy Directions - Easy Fix

We appreciated the help identifying the problem with our Purple Air sensor. The delivery of the replacement part was quick. The video explaining how to replace the part was easy to follow. Up and running again. Much appreciated!

Fixed my sensor

My PurpleAir Classic Plus sensor went haywire after several years of reliable service, reporting really high numbers completely out of sync with other nearby sensors. I suspected the laser counters were bad, so I ordered a new set. Installation (following the helpful video) was actually very easy. Fixed my sensor and it’s back in service.

Replacement counter

I needed to replace the laser counter in my flex sensor. Deep cleaning the old counter did not fix the problem.

Ordering was easy, shipment was prompt and installation took maybe 10 minutes.
It was great seeing my sensor again showing 100%

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Laser Counters

Customer Reviews