Flowline LD32‐S2_1 DeltaSpan - Manual (Page 2)

2 of 16 MN301031 Rev B
INTRODUCTION / TABLE OF CONTENTS Step One
The DeltaSpan™ LD31 Series General Purpose Clean Water & Oil or LD32 Series General Purpose Pump Lift
Station pressure level transmitters are manufactured for years of trouble free service in the harshest
applications. The pressure transmitter measures the height of liquid above the position in the tank referenced
to atmospheric pressure. The transmitter consists of a piezoresistive sensing element, encased in 316 SS
housing. The LD31 series features a bullet nose design protects the diaphragm from damage.
Superior lightning and surge protection utilizing dual arrestor technology, grounded to case, eliminating both
power supply surges and lightning ground strike transients. Large diameter 316 SS diaphragm seal is non‐
clogging and damage resistant to floating solids.
The transmitter is equipped with a 270‐pound tensile strength shielded and vented cable. Ventilation tube in
the cable automatically compensates for changes in atmospheric pressure above the tank. The vent is
protected with a maintenance free filter eliminating particulate or water droplets from entering the
transducer. For extra protection against high humidity environments, Flowline offers the LD90‐3000 desiccant
filter that can be attached to the vent tube.
 Excellent chemical compatibility with 316 construction
 Lightning and surge protection on all models
 Maintenance free vent filter
 LD31 series features slim design for tight applications
 LD32 series features large diameter, non‐clogging, damage resistant, 316 SS diaphragm seal
Table of Contents
Specification: .............................................................................................................................................. 3
Dimensions: ................................................................................................................................................ 4
Safety Precautions: .................................................................................................................................... 5
Components: .............................................................................................................................................. 6
Getting Started: .......................................................................................................................................... 7
How to convert Pressure into Liquid Height? ................................................................................ 7
How does Specific Gravity affect pressure transmitters? ............................................................. 8
How to select the correct pressure transmitter? .......................................................................... 9
How to configure a panel meter when a pressure transmitter is used? ..................................... 10
Electrical Installation: ............................................................................................................................... 11
Wire Length: ................................................................................................................................. 11
Wiring: .................................................................................................................................................. 12‐13
Installation: .............................................................................................................................................. 14
Interference: ................................................................................................................................ 14
Termination: ................................................................................................................................. 14
Maintenance: ........................................................................................................................................... 15
Testing the transmitter: ............................................................................................................... 15
Warranty: ................................................................................................................................................. 16