What does a DEF refractometer measure?

What does a DEF refractometer measure?

The Refractometer is a portable, precision, optical instrument used for measuring the Diesel Exhaust Fluid (DEF) concentration. When a liquid sample is placed on the prism, the light passing through it is bent. The Refractometer contains a reticle, or scale, that is enlarged through the eyepiece to measure this light.

How do you test DEF fluid with a refractometer?

Testing DEF with a Refractometer

1. Adjust The Prism Properly: Aim the prism at bright light and look through the eyepiece.
2. Adjust The Diopter: Adjust the diopter until the reticle scale is sharp and easily seen.
3. Zero The Refractometer: Before testing DEF material, the refractometer must be zeroed.

How is DEF fluid measured?

1. First, you can examine your DEF by visually checking for clarity, ensuring there are no contaminants or debris floating in the fluid.
2. Second, you can use a handheld DEF Chek Tester or purchase an electronic handheld refractometer like the Misco DEF-201 at a cost of around $360.
3. 0 Discs < 29% Urea Concentration.

How is DEF usage calculated?

Engine manufacturers set DEF burn rates at about 2 to 5 percent of fuel burned. (For every 100 gallons of diesel a machine consumes, it will burn 2 to 5 gallons of DEF.) So multiply the fuel consumption of a machine over a period of time by 0.03 to 0.05 to estimate how many gallons of DEF to have on hand.

What is a good DEF percentage?

32.5%
The ideal, or target reading is 32.5%. If under, more DEF con- centration is needed. If over, the urea concentration is too high.

What percentage should DEF be?

The concentration of the DEF must be 32.5% urea (+/- 0.7%). The DEF concentration should be checked when; the vehicle has been stored for an extended period of time, it is suspected that water has been added to the DEF tank, or the warning light appears on dashboard.

Can you use pee as DEF fluid?

The urea found in urine is not in the proper concentration needed for DEF, nor is it of a sufficient level of purity, in either urea or water. The bottom line, to spell it out just one more time… urine and DEF = Never. DON’T PEE IN YOUR DEF TANK!

How does a def digital refractometer work?

A digital refractometer, which Certified DEF offers, consists of a handheld device that offers a number of different scales for a specific fluid. By placing a sample of the fluid with a pipette on the measuring surface and closing the evaporation cover and pressing the “Go” button a test result will appear in the window within a few seconds.

How long does it take to get results from refractometer?

By placing a sample of the fluid with a pipette on the measuring surface and closing the evaporation cover and pressing the “Go” button a test result will appear in the window within a few seconds. It’s recommended to take an average of five tests to verify the most accurate reading.

How does a refractometer measure the angle of refraction?

Refractometers measure the degree to which the light changes direction, called the angle of refraction. A refractometer takes the refraction angles and correlates them to refractive index (nD) values that have been established.

How is a Refractometer used in the chemical industry?

A refractometer is a simple instrument used for measuring concentrations of aqueous solutions. It requires only a few drops of liquid, and is used throughout the food, agricultural, chemical, and manufacturing industries. How a Refractometer Works When light enters a liquid it changes direction; this is called refraction.

A digital refractometer, which Certified DEF offers, consists of a handheld device that offers a number of different scales for a specific fluid. By placing a sample of the fluid with a pipette on the measuring surface and closing the evaporation cover and pressing the “Go” button a test result will appear in the window within a few seconds.

How is a Misco Refractometer used to test Def?

A MISCO digital refractometer is the ideal method for testing DEF fluid to ensure it is at the correct concentration and has not been tampered with or diluted. It only takes a few drops of DEF and a couple of seconds to perform a test, and the results are precise to +/-0.1% urea concentration.

Can a Def refractometer tell you the quality of diesel exhaust fluid?

A Diesel Exhaust Fluid (DEF) refractometer cannot tell you the quality or shelf-life of the DEF, it can only provide you a measure of urea concentration. However, a concentration measurement can tell you if the DEF is over or under concentrated, and may indicate tampering.

How does OTC Def refractometer measure Def concentration?

OTC’s 5025 DEF Refractometer is a por- table, precision optical instrument designed to measure DEF concentration. When a liquid sample is placed on the tool’s prism, the light passing through the sample is bent (refraction). Today’s diesels feature DEF for NOx reduction.