The materials included in this compilation are for the use of Dwyer Instruments, Inc. potential customers and current employees as a resource only. They may not be reproduced, published, or transmitted electronically for commercial purposes. Furthermore, the Company’s name, likeness, product names, and logos, included within these compilations may not be used without specific, written prior permission from Dwyer Instruments, Inc. ©Copyright 2014 Dwyer Instruments, Inc.

1. Submersible Level Transmitters
The materials included in this compilation are for the use of Dwyer Instruments, Inc. potential customers and current employees
as a resource only. They may not be reproduced, published, or transmitted electronically for commercial purposes.
Furthermore, the Company’s name, likeness, product names, and logos, included within these compilations may not be used
without specific, written prior permission from Dwyer Instruments, Inc. ©Copyright 2014 Dwyer Instruments, Inc.

2. Overview
PBLT SBLT FBLT MBLT

3. Technology
Measure the height of liquid above the
position in the tank referenced to
atmospheric pressure
Pressure on sensor can be related to height
of liquid.
Piezoresistive sensing element, encased in a
316 SS housing
Piezoresistive – describes a material
whose resistance changes as a function
of mechanical strain applied

4. FBLT Introduction
FBLT Submersible Level
Transmitter
Flush Diaphragm Design
Purchase by Level Range, Cable
Type and Length

5. FBLT Specifications
Wetted Materials:
Body: 316 SS;
Cable: Polyether polyurethane or ETFE;
Diaphragm: PTFE coated FKM
Accuracy: ±0.25% FS
Electrical Protection: Surge/lightning
protected per EN61000-4-5, Class 5

6. FBLT Product Features
Flush, PTFE coated diaphragm
Low profile narrow design for tight applications
such as through pipe installations
Non-clogging/non-fouling for particulates and
sludge
PTFE is non-stick for no buildup on the sensor
Gel fill will not leak even with small holes in the
diaphragm. Competitors use oil.

7. MBLT – Introduction
Miniature Submersible Level Transmitter for
well and borehole applications
Vented for barometric pressure compensation
Purchase by accuracy, range, and cable length

8. MBLT - Specifications
Wetted Materials:
Body and nose: 316 SS
Cable: Polyether polyurethane or ETFE
Seals: Fluoroelastomer
Accuracy: ±0.25% FS (10; w.c. range is ±0.30%FS) or
±0.10% FS
Output: 2-wire 4-20 mA
Electrical Protection: Surge/lightning protected per EN6100-
4-5, Class 5
Agency Approval: CE

9. MBLT - Features
0.63” diameter for bore-hole and well
applications
316 SS tapered body and nose cap
Tapered gland- does not snag
Vent is covered with maintenance-free
filter protecting sensor
Level Ranges: 1.4 to 210 m w.c.

10. PBLT2/PBLTX - Introduction
Submersible Level Transmitter for sludge pit and
slurry applications
Vented for barometric pressure compensation
Purchase by range, cable length, and
cable type

11. PBLT2/PBLTX - Specifications
Accuracy: ±0.25% full-scale
Output Signal: 4 to 20 mA DC, two wire
Sensor Housing: 316 SS
Cable: Polyurethane or ETFE
Ranges: 3.52 to 100 meters w.c.
Agency Approvals:
PBLTX: CE, cUL intrinsically safe

12. PBLT2/PBLTX - Features
Excellent chemical compatibility with 316
construction and ETFE cable
Lightning and surge protection on PBLT2
models
Maintenance free vent filter
Durable cage protects diaphragm from rocks
and debris.
Large diameter, non-clogging, damage resistant,
316 SS diaphragm seal

13. SBLT2/SBLTX - Introduction
Submersible level transmitter
with PVC nose cap
Purchase by Level Range, Cable Type and
Length

14. SBLT2/SBLTX- Specifications
Sensor Housing: 316 SS
Accuracy: ±0.25% of full-scale
Output Signal: 4 to 20 mA DC, 2-wire
Cable: Polyurethane or ETFE
Bullet nose: PVC
Level Ranges: 3.52 to 240 meters w.c.

15. SBLT2/SBLTX - Features
Bullet nose design protects the diaphragm
from damage
Excellent chemical compatibility
Lightning and surge protection on SBLT2
models
Maintenance free vent filter
UL approved intrinsically safe on SBLTX
models
Slimmer design for tight applications

16. Applications
Wastewater Level Monitoring
Pump/Lift Stations

17. Applications
Liquid Tanks
Fuel
Water
Chemical Storage

18. Applications
Water Treatment Plant
Head Works (Influent)
Settling Basins
Aeration Basins

19. Applications
Stilling Wells
Used to decrease
turbulence for level
measurement
FBLT fits in smaller
diameter stilling wells

20. Applications
Industrial Wastewater
Heat Recovery
Water Reuse
Sump Level
Monitoring/Pump
Control

21. Applications
Well monitoring
Ground water monitoring

22. Applications
Systems Manufacturers
Pump Control Panel
Manufactures
Packaged Lift Stations
Manufactures