Test Method
The portable Remaining Useful Life Evaluation Routine （RULER®） instrument measures the oxidative resistance levels of mineral and synthetic hydrocarbon oils, ester-based and biodegradable oils. Utilizing voltammetric techniques, the RULER® quantitatively analyzes the relative concentrations of antioxidants in new and used oils in order to monitor the depletion rates of the antioxidant protection package in the oil. The RULER® can be used proactively in order to determine proper oil change intervals and to extend oil change intervals through timely antioxidant additive replenishments. In addition, the RULER® can be used to quantify antioxidant levels of incoming and stored oil supplies and to detect abnormal operating conditions prior to equipment failure signalled by abrupt antioxidant depletion rates.

Features and Benefits
• Patented electrochemical measurement technique
• Conforms to ASTM D6810 and D6971
• Compact and compley portable hand-held unit
• Windows® CE-based simple touch screen operation
• Durable for use in harsh and industrial environments
• 320 x 240 pixel LCD backlit touch screen with automatic contrast
• Stores over 100 tests in memory
• Quick data communication and downloading laptop and desktop computers
• Integrated charge status/low-battery indicator with inligent fast charge
• Long-life lithium-ion battery with power backup 

Specifications
CE Certified

Communication Ports:
Standard RS-232 port

Operating Temperature Range:
-30†C to +50†C
-22†F to +122†F

Power Supply
Rechargeable lithium-ion battery pack
Rechargeable lithium-manganese backup battery pack

Electrical Requirements
120V 50/60Hz
220V 50/60Hz

Included Accessories
Cable, and Communication Software
R-DMS® Software Package （RULER® Data Management Software）
RULER® Probe
Carrying Case for RULER® instrument and accessories
Micropipettor with disposable tips
Alcohol pads
Tissue Wipes
Instruction Manual

Dimensions lxh,in.（cm）
24.8x10.4x6.1 （9.75x4.1x2.4）
Net Weight: 1.9 lbs （0.85kg）

Shipping Information
Shipping Weight: 10 lbs （4.5kg）
Dimensions: 2 Cu. ft.