Gage Fluids

Gage Fluids
Fluids for Dwyer Products Gage fluids in the 1 ounce size are furnished in unbreakable plastic dispenser type bottles. Use only Dwyer fluids in Dwyer gages. Red gage fluid, blue gage fluid, and fluorescein green color concentrate.
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  1. GAGE FLUIDS
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Questions

Question
We are using a Durablock inclined manometer with a range of 0-0.25" of water. What is considered a normal response time to steady state? We are seeing times of 1 minute whereas the manual states 'a few seconds'. Gage fluid is well beyond the recommended three years. Do I need fresh (i.e. new) gage fluid? My supply is as old as what's in the manometer.
Answer
The manometers have a response time that is dependent on the length of tubing, so a response time of a minute is not uncommon. You may want to check your fittings to make sure there is not a clog present. The gage fluid has a lifespan of three years before the inherent properties start to change, so it is suggested to replace it. A one ounce bottle of fluid is p/n A-101.
Question
Model 1212. How much fluid mixture is required? What is the best method to fill this unit?
Answer
A 1 oz bottle of A-126 Fluorescein green color concentrate is added to a quart of distilled water. Remove a tubing connector from the manometer and pour the mixture in to mid-point level. Shake the manometer to remove air bubbles and slide the scale so the zero mark is in line with the meniscus of the two fluid columns.
Question
can you dilute the red dye for the manometer with distilled water?
Answer
The red gage fluid has a specific gravity of .826. If you dilute it with distilled water you will change the specific gravity and it will not work in instruments that require the red gage fluid.