J57AB /J157AB Refractometers for Measurement of Urea Concentration for Diesel Engine Additives
Standards
Designed in accordance with DIN 70071 / ISO 22241-2
Basic operation
The J57AB is a sub model of the J57HA and most details on the Technical Bulletin 941 apply; the J157AB is
a sub model of the J157 and most details on Technical Bulletin 940 apply. The differences between the AB
and the standard models are:
Temperatura
Both instruments have improved temperature performance to better than 0.02oC, meeting the requirements of
DIN 70071 / ISO 22241-2
Scale (Part number 30593-2)
The J57AB displays results in refractive index or % Urea.
The J157AB allows a user to change the calculation of Urea by changing the f number or by entering the Biruret.
Optional accessories
Both the J57AB and J157AB can export data to a USB stick or strip printer
The J157AB is fully networkable and can be connected to:
– Network Printer
– Autosampler
– Barcode Reader
J57 – J157 AB