Chemical-Level Indicators
Check the level of liquids containing chemicals such as alcohol-based solvents, boric acid, and sodium bicarbonate. These indicators can be used in pressurized applications where overflow is a concern. All have an aluminum gauge shield that protects the glass window from impact. Clear liquids magnify a red line at the back of the window, so their levels are easier to see.
Screw-in indicators mount from the outside of your tank into threaded pipe or threaded holes.
Through-wall indicators mount from the inside of your tank through unthreaded holes. Secure with nuts on the inside of your tank.
Screw-in/through-wall indicators give you the option to mount from the inside or outside of your tank. Use the mounting nuts on the inside of your tank to attach them through unthreaded holes or thread them into pipe or threaded holes on the tank’s outside.
Temp. Range, °F | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Connection Ctr.-to-Ctr. | Overall Ht. | Window Ht. | Body Wd. | For Max. Tank Wall Thick. | Max. Pressure | Min. | Max. | Fitting Material | Window Material | Features | Includes | Each | |
Screw-In Mount—Aluminum | |||||||||||||
3/8 NPTF Male Thread | |||||||||||||
| 3" | 4 5/8" | 1 1/2" | 1 3/4" | __ | 290 psi @ 70° F | -15° | 400° | Brass | Glass | Red Line | __ | 3888N11 | 000000 |
1/2 NPTF Male Thread | |||||||||||||
| 6" | 7 5/8" | 4 1/2" | 1 9/16" | __ | 290 psi @ 70° F | -15° | 400° | Brass | Glass | Red Line | __ | 3888N13 | 00000 |
| 8" | 9 5/8" | 6 1/2" | 1 9/16" | __ | 290 psi @ 70° F | -15° | 400° | Brass | Glass | Red Line | __ | 3888N14 | 00000 |
| 10" | 11 5/8" | 8 1/2" | 1 9/16" | __ | 275 psi @ 70° F | -15° | 400° | Brass | Glass | Red Line | __ | 3888N15 | 00000 |
| 12" | 13 5/8" | 10 1/2" | 1 9/16" | __ | 270 psi @ 70° F | -15° | 400° | Brass | Glass | Red Line | __ | 3888N16 | 00000 |
Through-Wall Mount—Aluminum | |||||||||||||
1/2"-20 UNF Male Thread—For 1/2" Hole Dia. (2 Holes) | |||||||||||||
| 5" | 6 5/8" | 3 1/2" | 7/8" | 3/4" | 290 psi @ 70° F | -15° | 400° | Aluminum | Glass | Red Line | Mounting Nuts | 3888N25 | 00000 |
| 10" | 11 5/8" | 8 1/2" | 7/8" | 3/4" | 275 psi @ 70° F | -15° | 400° | Aluminum | Glass | Red Line | Mounting Nuts | 3888N27 | 00000 |
| 12" | 13 5/8" | 10 1/2" | 7/8" | 3/4" | 270 psi @ 70° F | -15° | 400° | Aluminum | Glass | Red Line | Mounting Nuts | 3888N28 | 00000 |
Screw-In/Through-Wall Mount—Aluminum | |||||||||||||
1/2"-20 UNF Male Thread—For 1/2" Hole Dia. (2 Holes) | |||||||||||||
| 3" | 4 5/8" | 1 1/2" | 1 1/8" | 1/2" | 290 psi @ 70° F | -15° | 400° | Aluminum | Glass | Red Line | Mounting Nuts | 3888N17 | 00000 |
| 5" | 6 5/8" | 3 1/2" | 1 1/8" | 1/2" | 290 psi @ 70° F | -15° | 400° | Aluminum | Glass | Red Line | Mounting Nuts | 3888N18 | 00000 |
| 6" | 7 5/8" | 4 1/2" | 1 1/8" | 1/2" | 290 psi @ 70° F | -15° | 400° | Aluminum | Glass | Red Line | Mounting Nuts | 3888N19 | 00000 |
| 8" | 9 5/8" | 6 1/2" | 1 1/8" | 1/2" | 290 psi @ 70° F | -15° | 400° | Aluminum | Glass | Red Line | Mounting Nuts | 3888N21 | 00000 |
| 10" | 11 5/8" | 8 1/2" | 1 1/8" | 1/2" | 275 psi @ 70° F | -15° | 400° | Aluminum | Glass | Red Line | Mounting Nuts | 3888N22 | 00000 |
| 12" | 13 5/8" | 10 1/2" | 1 1/8" | 1/2" | 270 psi @ 70° F | -15° | 400° | Aluminum | Glass | Red Line | Mounting Nuts | 3888N23 | 00000 |