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OIL SAMPLING

© 2 0 0 8 T R I C O C O R P O R A T I O N . A L L R I G H T S R E S E R V E D .

OIL SAMPLING PRODUCTS

MUST REFLECT

Lubricant and Equipment Condition

While Maintaining

Safe environment

Isolate critical components

Sample integrity

© 2008 Trico Corporation. All rights reserved.

APPLICATIONS FOR OIL SAMPLING


OIL SAMPLING OBJECTIVES


OIL SAMPLING OBJECTIVES

Objectives to strategic sampling

Maximize data density

Minimize data disturbance

Maintain proper frequency

Strategic sampling considerations

Sampling location

Sampling hardware

Sample bottles

Sample procedure


OIL SAMPLING PORTS

Protective cap seals against dirt and moisture

Cap connected to sample port with heavy brass chain to prevent loss

Sample directly from lubricating oil while equipment is running

Minimizes introduction of contamination into system

Used in conjunction with proper accessories sample ports are adaptable to pressure, static, and vacuum locations


PITOT TUBES

Pitot tubes are used for non-pressurized applications

Complete assembly consists of a test port and sampling tube

Available in various lengths and thread configurations

Liquid level gauge ports for fluid level visibility


VACUUM PUMP

Plastic tubing should not be in

contact with the oil

A vacuum pump is used to

extract sample. Care must be

taken to ensure that the

internals of the pump are not

contaminated with oil, dirt,

water, etc.

SAMPLING METHODS - STATIC

Sample while equipment is running and at typical operating temperatures.

For reservoir sampling a rod can be used with new tubing to achieve consistent sampling location. Cut tubing length such that sample is pulled approximately in the middle of the reservoir avoiding the walls and bottom of

reservoir.

Difficult to keep rod clean between each oil sample as oil will attract dirt.

Acceptable Not Acceptable

STATIC OIL SAMPLING – DROP TUBE

Drop Tube

Best Applications Tank and reservoir sampling

Crankcase oils, if a live zone sampling port is not

available

Equipment where trending particle counts and

moisture level are not important.

Subject to Safety Issues – not recommended when exposed

to rotating components

Can Introduce Contaminates into Sample and System

Difficult in Consistency of oil sample location

Effective for Chemical Analysis

Better Options are Available

Not Best Practices


DRAIN PORT SAMPLING

Most common method utilized

Typically, only port available for pulling

sample.

Particulates & water settle to the

bottom.

Not representative of oil condition in

critical load zone.

Other methods are available


PITOT TUBE – BEST PRACTICE

Pitot Tube

Able to Bend to Precise Internal Location

Available in Stainless Steel

Available In various Lengths

Drop Tube Drain Port


SAMPLING OPTIONS


LIVE ZONE SAMPLING

Laminar FlowTurbulent Flow

Sample from live fluid zone

Sample from turbulent zones

Sample downstream of critical

components

Sample before and after filters

Do

Sample from dead pipe

lengths

Sample from laminar flow

zones

Sample when the machine is

cold or off

Don’t
