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Submersible & Waste Water Pressure
LD31-S301, LD31-S311, LD31-S321, LD31-S331,
LD31-S401, LD31-S411, LD31-S421, LD31-S431,
LD32-S301, LD32-S311, LD32-S321, LD32-S331
LD32-S401, LD32-S411, LD32-S421 & LD32-S431
31 MAR 11
Rev C
DeltaSpan
Intrinsically Safe
Transmitter Manual
Series
DeltaSpan (IS) LD31 / LD32 Series
MN301031
1 of 13
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Summary of Contents for FlowLine LD31-S301 Series
- Page 1 DeltaSpan Intrinsically Safe Submersible & Waste Water Pressure Transmitter Manual LD31-S301, LD31-S311, LD31-S321, LD31-S331, LD31-S401, LD31-S411, LD31-S421, LD31-S431, LD32-S301, LD32-S311, LD32-S321, LD32-S331 LD32-S401, LD32-S411, LD32-S421 & LD32-S431 Series 31 MAR 11 DeltaSpan (IS) LD31 / LD32 Series 1 of 13 Rev C MN301031...
- Page 2 On-line Warranty Registration can be found under Customer Support in the Navigation Bar along the side of the home page. If for some reason your product must be returned for factory service, go to the Flowline website to receive a Material Return Authorization number (MRA), providing the following information: 1.
- Page 3 Warranty Flowline warrants to the original purchaser of its products that such products will be free from defects in material and workmanship under normal use and service in accordance with instructions furnished by Flowline for a period, which is equal to the shorter of one year from the date of purchase of such products or two years from the date of manufacture of such products.
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Page 4: Table Of Contents
Introduction The LD31 / LD32 series Intrinsically Safe DeltaSpan Submersible / Waste Water 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. -
Page 5: About This Manual
User’s Responsibility for Safety: Flowline manufactures a wide range of liquid level sensors and technologies. While each of these technologies are designed to operate in a wide variety of applications, it is the user’s responsibility to select a technology that is appropriate for the application, install it properly, perform tests of the installed system, and maintain all components. -
Page 6: Components
Make a Fail-Safe System: Design a fail-safe system that accommodates the possibility of transmitter failure or battery power loss. In critical applications, Flowline recommends the use of redundant backup systems and alarms in addition to the primary system. Components: DeltaSpan is offered in eight different models, based upon pressure rating and material. Depending on the model purchased, you may or may not have been shipped all the components shown below. -
Page 7: Specifications
Specifications Service: Compatible liquids Wetted Materials: Body: 316 SS, 316L SS and Buna-N Cable: Polyurethane or ETFE Bullet Nose: PVC (LD31 series only) Accuracy: ±0.25% of full scale Temperature Limit: 0 to 176°F (-18 to 80°C) Compensated Temperature Range: 0 to 176°F (-18 to 80°C) Thermal Effect: Less than ±0.02%/°F Pressure Limit:... -
Page 8: Dimensions
Dimensions: LD31 Series: LD32 Series: Material Compatibility: o The LD31 / LD32 series is made of 316 Stainless Steel (316 SS), 316L Stainless Steel (316L SS) with a cable of Polyurethane or Ethylene Tetrafluoroethylene (ETFE). The LD31 series has a bullet nose of Polyvinyl Chloride (PVC). -
Page 9: How To Convert Pressure Into Liquid Height
How to convert Pressure into Liquid Height? Pressure transmitters are all describe by the pressure range and not by liquid height. To convert pressure liquid height, use the following ratio: 1 psi = 2.31 feet of water 1 psi = 0.704 meters of water Therefore, a 15 psi transmitter will have a liquid height = 34.65 feet (10.56 m) or [15 psi x 2.31’/psi = 34.65’... -
Page 10: How To Select The Correct Pressure Transmitter
How to select the correct pressure transmitter? The objective is to use a pressure transmitter that will cover the entire range of the application. If the liquid height of the tank is above the transmitter’s Maximum Liquid Height, then the sensor will not be able to read the level of a full tank. -
Page 11: Wiring - Control Drawing
Wiring – Control Drawing Wiring to a Loop Powered Display (refer to Control Drawing above) Wiring to a Typical PLC (refer to Control Drawing above) 31 MAR 11 DeltaSpan (IS) LD31 / LD32 Series 11 of 13 Rev C MN301031... -
Page 12: Installation
Installation The LD31 / LD32 series is designed to operate while submerged in the actual application liquid. Avoid installing the level transmitter along the bottom of the tank is materials such as sludge will build up and coat/cover the transmitter. This also includes any debris that will settle along the bottom of the tank. -
Page 13: Testing The Transmitter
Testing the transmitter: Verify proper wiring, power supply and loop resistance. If transmitter is not functioning properly, isolate the transmitter from the system and wire as shown below. Be sure to remove the sensor from the classified area when performing this test. Multimeter should read 4 mA with the transmitter out of liquid. 31 MAR 11 DeltaSpan (IS) LD31 / LD32 Series 13 of 13...
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