PC3400 Online Particle Counter

Simple Calibration

backlit
screen

LIVE
charting

modbus rtu
Modbus TCP
Analog I/O

automatic
calibration

The PC3400 is the first Particle Counter specifically designed for use in drinking water treatment plants and includes an uncomplicated calibration process for the end user. Simply access the calibration features via the front panel keypad and perform automatic sizing calibration of any selected size range in seconds. No computer or software is required. With the PC3400, the customer is no longer dependent upon the manufacturer for calibration of their instrument.

Counts particles in liquid from 2-750 microns
Sizes particles from 2-125 microns
Parts-per-billion (ppb) display for particle concentrations*
Reports total counts, counts/mL, or counts/100mL
Up to 8 user-programmable size ranges
Large display with 8-channel readout & graph
User friendly, menu driven calibration
MODBUS RTU communication
Laser & cell condition readout (0-100%)
External sensor with sapphire optics

Analog Outputs, Inputs, & Alarm Relays
Multiple communication protocols supported

Provides a reliable and accurate measurement of particles down to ppt levels
Advanced firmware and menu functions eliminates need for external software to perform setup and calibration
User friendly calibration routine makes calibration fast, simple, and lowers maintenance cost
Display modes include: all 8 particle size channels at once; total counts; ppb (Insoluble
Material Volumetric Concentration) of particulate > 2 microns; graph of last 64 readings; and other sensor performance info
External sensor is easy to clean and water is kept away from electronics

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Overview

Videos

Q & A

Specifications

Downloads

Overview

The PC3400’s performance reliability, ease of use, and measurement capability make it an ideal choice for online filter performance monitoring and optimization. This is most clearly demonstrated in the PC3400’s ability to detect filter breakthrough hours in advance of any NTU change. Close to two decades of customer experience with Chemtrac’s Particle Counters has proven the effectiveness of this technology to take water quality monitoring to the next level. Chemtrac’s PC3400 is the right choice if the optimization demands of your application are not being met by relative and less sensitive measurements of water quality like those provided by turbidimeters or SDI test systems.

Chemtrac has experience with many applications that require the measurement of liquid borne particles.

Videos

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Chemtrac PC5000 Particle Counter Demo

Demonstration

The PC5000 Portable Particle Counter is capable of grab sample liquid particle analysis in the lab, as well as online continuous analysis in the field.

PLAY VIDEO

Q & A’s

ThThe PC3400 is specifically designed for use in drinking water treatment plants to monitor and optimize filter performance by detecting filter breakthrough hours before any NTU change occurs.

The PC3400 can detect particles in the size range of 2 to 750 microns, with a sizing range of 2 to 125 microns .

The PC3400 features an uncomplicated calibration process that can be accessed via the front panel keypad, allowing automatic sizing calibration without the need for a computer or software .

It uses a solid-state laser diode with a wavelength of 780 nm.

It includes a graphical display that shows 8 size channels at once, unit information, diagnostics, alarms, total counts, and graphical trending .

The PC3400 supports MODBUS RTU communication and offers optional MODBUS TCP (Ethernet) along with multiple communication protocol

The flow rate for the PC3400 is 75 mL/min.

he PC3400 can store up to 65,000 sample strings with user-defined logging intervals ranging from 1 to 254 minutes.

Specifications

Laser Type

Solid-state laser diode (780nm)
Cell Material

Nituff coated aluminum
PEEK plastic (optional)
Viewing Windows

Sapphire
Detection Range

2-750 microns
Sizing Range

2-125 microns
Sample Temperature

32° – 120° F
0° – 50° C
Flow Rate

75 mL/min
Resolution

Better than 10% at 10 micron (ASTM-F658)
Coincidence Limit

(2 micron) 20,000 cnts/mL (optional)
Signal to Noise Ratio

Better than 5:1
Size Channels

8 – user selectable and total counts
Alarms

Sensor diagnostic, particle count limit
Laser Diode Life

MTBF 75,000 hours @ 55º C
Measurement Type

Light obscuration, volumetric
Local Display

Graphical, 8 size channels displayed at once, unit info/diagnostic screen, alarm screen, total count screen, graphical trending, user menus
Display Readout

Size channel, counts, cell condition (0-100%), laser condition (0-100%), unit address, sample period, sample frequency, flow rate, days until data log overwrite ppb volumetric concentration (optional)
Graphical Trending

Trending of last 64 logged values for any size range, analog input, or sensor status %
Data Storage

65,000 sample strings User defined logging interval (1 – 254 min)
Keypad Interface

All instrument settings may be modified via the keypad interface, including instrument calibration (some settings require password)
Serial Communications

2 wire RS485 (Network) and RS232
Communication Protocols

Standard: MODBUS RTU (RS485)
Optional: MODBUS TCP (Ethernet), multiple communication protocols supported
Analog Outputs

2, 4, 6, or 8 channels, 4-20 mA (optional)
Analog Inputs

2, 4, 6, or 8 channels, 4-20 mA 0-5V, 0-10V (optional)
Alarm Relays

2, 250V, 1 Amp (optional)
Power Requirements

100-240 VAC, 200mA, 47 – 63 Hz 12 or 24 VAC (optional)
Operating Temperature

32° – 120° F (0° – 50° C)
Dimensions

12” W x 11” H x 5” D
(305 mm W x 280 mm H x 127 mm D)
Weight

7 lbs (3.2 kg)

Downloads

Title	Category	Upload Date	File Size	Download
TracData 3.0	Particle Counter, PC3400 Liquid Particle Counter	Nov 3, 2025	4 MB	Download
Particle Counter PC3400 Operations Manual	Particle Counter, PC3400 Liquid Particle Counter	Nov 3, 2025	3 MB	Download
Particle Counter PC3400 Modbus Operations Manual	Particle Counter, PC3400 Liquid Particle Counter	Nov 3, 2025	70 KB	Download
Particle Counter PC3400 Datasheet	Particle Counter, PC3400 Liquid Particle Counter	Nov 3, 2025	186 KB	Download
Particle Counter Firmware Update Procedure	Particle Counter, PC3400 Liquid Particle Counter	Nov 3, 2025	460 KB	Download
Establishing Communication with TracData	Particle Counter, PC3400 Liquid Particle Counter	Oct 29, 2025	542 KB	Download