.875 (22) Dia.
Actuation length
for
NPT
process connection
.25 (6)
3.25
(83)
2.25 Rotation
(57) clearance
3.30
(84)
1.00 (25)
Valox
housing
1
⁄
2
" NPT
Actuation length
for BSP
process connection
.875 (22) Dia.
2.25 Rotation
(57) clearance
3.30
(84)
.25 (6)
1.00 (25)
2.45
(62)
Valox
housing
1
⁄
2
" NPT
.875 (22) Dia.
Actuation length
for NPT
process connection
2.25 Rotation
(57) clearance
3.30
(84)
0.25 (6)
1.00 (25)
Valox
housing
Heat
Extension
1
⁄
2
" NPT
5.25
(133)
.875 (22) Dia.
Actuation length
for sanitary flange
2.25 Rotation
(57) clearance
3.30
(84)
0.25 (6)
1.00 (25)
Valox
housing
1
⁄
2
" NPT
2.95
(75)
Echotel Model 919 Ultrasonic Level Switch
7
3.0
Reference Information
3.1
Troubleshooting
1. No signal with level change
a. Check wiring to make sure proper input voltage is supplied.
b. Make sure liquid is filling the transducer gap.
c. Check for dense foam on surface or dried product in the gap. Unit will not function properly if
either condition exists.
2. No change in output between wet gap or dry gap.
a. Check to see if transducer gap is plugged with solids.
b. Check for dense foam in gap.
3. The switch is chattering.
a. Check for proper input voltage supply.
b. Check for turbulence. Relocate switch or isolate from the turbulence.
c. Check for excessive aeration.
3.2
Specifications
3.2.1 Physical
Inches (mm)
