OTC 5025 Operating Instructions

655 Eisenhower Drive
Owatonna, MN 55060 USA
Phone: (507) 455-7000
Tech Serv.: (800) 533-6127
Fax: (800) 955-8329
Order Entry: (800) 533-6127
Fax: (800) 283-8665
International Sales: (507) 455-7223
Fax: (507) 455-7063
5025 Diesel Exhaust Fluid (DEF) Refractometer
WARNING! To prevent equipment failure or
damage resulting in personal injury:
•
Read and follow all warnings in this
instruction sheet before operating
this unit. If the operator cannot read
English, operating instructions and
safety precautions must be read
and discussed in the operator's
native language.
•
Wear eye protection and protective
clothing when working with
Contact with
personal injury.
•
Do not drink
give two glasses of water, induce
vomiting, and call a physician.

Specifications

Style: Diesel Exhaust Fluid (DEF)
Size: 27 x 40 x 160 mm (1.06 x 1.57 x 6.3 in.)
Weight: 176 g (0.39 lbs)
Range
15 – 40%
© Bosch Automotive Service Solutions Inc.
DEF
.
DEF
may cause
DEF
. If swallowed,
Resolution
0.5%

Operating Instructions

for:
3
2
1
1. Prism 4. Mirror tube (holds the reticle scale)
2. Cover plate 5. Eyepiece (focusing ring of diopter)
3. Correction screw
Accessories
Eyeshade Screw driver
Soft cloth Plastic bottle
Application
The refractometer is a portable, precision, optical
instrument used for measuring Diesel Exhaust Fluid
(DEF) concentration.
When a liquid sample is placed on the prism, the light
passing through it is bent. The more concentrated the
liquid, the more the light will bend. The refractometer
contains a reticle, or scale, that is enlarged through the
eyepiece to measure this light.
The values on the scale have been established to
evaluate the DEF condition.
The scale without any
liquid on the prism.
Sheet No.
Issue Date:
Form No. 558648
5025
4
5
Plastic dropper
Pointer
The scale with liquid
on the prism.
The reading is taken at
the point the shadow line
crosses the scale.
1 of 1
Rev. C, March 3, 2016