Use and Care Manual

Commercial Pressure and Float Switches for Power Circuits
Float Switches—Class 9036, 9037, and 9038
53
03/2011
© 2011 Schneider Electric
All Rights Reserved
Class 9037 Type E Closed Tank Float Switches
Class 9037 closed tank float switches are used primarily on condensate pumps but may also be
installed on closed industrial and diesel fuel day tanks. There are two types of Class 9037 float
switches:
• Type E (flange mounted)
• Type H (with screw-in bushing)
Class 9037 Type E Flange-Mounted Float Switches
Table 15 contains ordering information for Class 9037 Type E float switches. Order the rod and float
accessory kits separately. Contact the Sensor Competency Center when using Class 9037 float
switches in liquids with a different specific gravity than water (1.0).
For rod kit catalog numbers, refer to pages 55 and 56.
To receive all components packaged in a single carton, specify:
• Float switch Class, Type, and Form
• “R” and the rod number
• “F” and the float number
For example, to receive one each of 9037EG8, 9049ER1, and 9049EF1, specify 9037EG8R1F1.
Table 15: Class 9037 Type E Float Switches
Specifications
Application
Closed industrial tanks
Flange mounted
Float movement Transmitted through a quad ring seal, which may need occasional replacement
Tank Pressure Up to 50 psi
Temperature
Ambient Up to 220 °F
Media Buna-N seal: up to 215 °F. Viton
®
seal: up to 250 °F.
Contact Operation Determined by the float and rod mounting position
Float Travel Determined by the post length
Catalog Numbers
Post Length (L), in. (mm) 2.63 (67) 4.69 (119)
Water Level Change Minimum Maximum Minimum Maximum
NEMA 1 9037EG8 9037EG9 9037EG10 9037EG13
NEMA 4 9037EW8 9037EW9 9037EW10 9037EW13
NEMA 7, 9 9037ER8 9037ER9 9037ER10 9037ER13
Float Position
[1]
1
For more information on float position, refer to pages 55–56.
1 1, 2, 3 1 1, 2, 3
Float Kits
Material Catalog Number
#304 Stainless Steel 9049EF1
#316 Stainless Steel 9049EF2
Float Position 1
Float Position 2
Float Position 3