MicroTOL Online Turbidimeter for Turbidity Testing

35 years of optical measurement expertise has allowed HF scientific to become the leader in regulatory reporting turbidimeters. The HF scientific MicroTOL Online Turbidimeter has been specifically designed to meet regulations of the EPA and ISO 7027. Features include fast and easy calibration, verification in seconds, low maintenance, fail safe design which ensures your instrument is always reading accurately, bubble rejection system, automatic continuous ultrasonic optical cleaning system (except MicroTOL 2 models), and a data acquisition software system that allows logging and data storage for multiple turbidimeters.

Fast and easy calibration

Verification in seconds while a complete primary calibration can be completed in less than 5 minutes

Low volume sample chamber

Low volume sample chamber (30ml) reduces calibration costs and provides quick response times

Low maintenance fail safe design

Simple modular design - Easy to use and service

Bubble rejection system

Eliminates bubbles without delaying the response time

Affordable

Modular microprocessor based technology ensures high quality at the industry's lowest price

Autoclean (except MicroTOL 2)

Automatic continuous ultrasonic cleaning allows for the first EPA 180.1 accepted automatic cleaning online turbidimeter

Made in the USA

Optional features

Online software

Allows logging, comparisons, graphs and data acquisition for multiple online turbidimeters into a PC

Remote display

Allows remote monitoring up to 500 feet away

Title	Description	Download
MicroTOL Online Turbidimeter	Sales Sheet
MicroTOL Online Turbidimeter	Specifications Sheet
MicroTOL Turbidimeter Modbus	Modbus Manual
MicroTOL Online Turbidimeter	Operator's Manual

Measurement principle	Nephelometry (90°)
Range	Auto ranging from 0 - 1000 NTU
Resolution	0.0001 Selectable
Accuracy	2% of reading or ±0.02 below 40 NTU (0-500 NTU)
	5% of reading above 40 NTU (500-1100 NTU)
Response time	Adjustable (5 to 500 seconds) 0 to 1000 NTU
Standard outputs	4-20 ma galvanic isolated or RS-485
RS-485 protocols	Modbus, HF simplebus, HF Online interface
User alarms	2 user selectable high/low alarms
Light source	White light or infrared (850nm LED)
Operating temperature	0°-50°C (32° to 122°F)
Input pressure	1 - 200psi (built in regulator set at 15psi)
Enclosure	NEMA 4X, IP66
Display	Multiline custom LCD (backlight option)
Certifications	USEPA, ISO 7027, CE approved, ETL Listed to UL 3111-1 and ETL certified to CSA 22.0 No. 1010-1-92

Instruments

Model	Description
20053	MicroTOL 2 instrument, white light , 0 - 1000 NTU
20054	MicroTOL 2 instrument, Infrared , 0 - 1000 NTU
20055	MicroTOL 3 instrument, white light , 0 - 100 NTU, Autoclean
20056	MicroTOL 3 instrument, Infrared , 0 - 100 NTU, Autoclean
20063	MicroTOL 4 instrument, white light , 0 - 1000 NTU, Autoclean
20064	MicroTOL 4 instrument, Infrared , 0 - 1000 NTU, Autoclean

Accessories

Model	Description
02053	Electronic service module MicroTOL 2 WL (also will retrofit to MicroTOL 1 WL)
02054	Electronic service module MicroTOL 2 IR (also will retrofit to MicroTOL 1 IR)
02055	Electronic service module MicroTOL 3 WL
02056	Electronic service module MicroTOL 3 IR
02063	Electronic service module MicroTOL 4 WL
02064	Electronic service module MicroTOL 4 IR
19777	MicroTOL Modbus Manual
19778	Inline flow regulator (1L/min) Recommended for pressurized system
19787	Converter RS-485 to USB. For use with HF Online Software
19945A	Flow Alarm for MicroTOL (factory installed)
20106	Stilling / Bubble Removing Chamber
20111	24 volt Power Supply for MicroTOL (factory installed)
20779S	Power Cord 120VAC
20815	22 gauge RS-485 two wire twisted pair shielded communication cable (sold per foot)
21045A	Inductive Isolator Option for 4-20mA
21201	Source/Drain Tubing - sold per foot
21201S	Source/Drain Tubing - 50 foot roll
21396S	Lamp assembly for infrared models (80,000 hour life)
21555R	Replacement Desiccant Pouch
24017S	Junction Box Power Supply Assembly
24034	Operator's Manual for MicroTOL - printed version
24082S	Lamp assembly for white light models (80,000 hour life)
24165S	Flow through assembly, nylon (does not include cuvette)
24166S	Ultrasonic cuvette assembly - MicroTOL 3 and 4
24306S	Inline pressure regulator
39824	ProCal Primary Calibration Standard - 100 NTU
39825	ProCal Primary Calibration Standard - 10 NTU
39953	ProCal Calibration Kit .02,10, and 100NTU (for MicroTOL 3)
39957	ProCal Primary Calibration Kit, Full Range, .02, 10, and 1000 NTU (for MicroTOL 2, 4 and Micro100) also for MicroTOL 1(discontinued)
50036	Flow through cuvette - MicroTOL 2 (3 pack)
50040	Formazin Stock Solution Kit - Primary Calibration - each kit contains: 32 onces of 4000 NTU Formazin, one gallon 0.02 NTU Reference Standard, four cuvettes with indexing light shields, three pipettes and instruction manual
50121	Flow Through Assembly, high temperature, 0 - 90°C (32 - 194°F)
50125	Flow through assembly (includes non ultrasonic cuvette)
70914	Formazin Stock Solution - 4000 NTU in a 16 oz bottle
98877	Demo Stand for MicroTOL