DeltaSpan? LD31 Submersible General Purpose Pressure Liquid Level Sensor Transmitter from Flowline

DeltaSpan? LD31 Submersible General Purpose Pressure Liquid Level Sensor Transmitter from FlowlineThe LD31 general purpose submersible pressure level transmitter provides continuous liquid level measurement up to 34.65’ (10.5m) of water column with a 4-20 mA signal output. Offered in three level measurement ranges, select the appropriate model based on your tank height or well depth. For convenient installation with junction box termination, package your level sensor with the pressure sensor mounting kit. Each kit includes a junction box with terminal strip, mounting plug and liquid tight cable connector. The LD31 level pressure sensor is well suited for clean liquids compatible with 316 SS and polyurethane such as well water and diluted chemicals.

Features

DeltaSpan? LD31 Submersible General Purpose Pressure Liquid Level Sensor Transmitter Features:

  • Rugged sensor designed for complete submergibility
  • 316 stainless steel sensor body with polyurethane cable
  • Maintenance-free vent tube with filter ensures accuracy
  • Mounting kit for easy tank install and conduit termination
  • Integral surge protection for lightning strikes or power surges
  • Automatic temperature compensation for reliable measurement

Specifications

DeltaSpan? LD31 Submersible General Purpose Pressure Liquid Level Sensor Transmitter Specifications:

SpecificationDetails
Range-S101: 0 to 5 psi (0.34 bar) or 0 to 11.55’ (0 to 3.5 m) wc-S111: 0 to 10 psi (0.69 bar) or 0 to 23.1’ (0 to 7.0 m) wc-S121: 0 to 15 psi (1 bar) or 0 to 34.65’ (0 to 10.6 m) wc
Accuracy±0.25% of full scale
ConfigurationNone, fixed span
Supply Voltage11 to 28 VDC
Loop Resistance900 Ohms max @ 30 VDC
Signal Output4–20 mA, two-wire
Process Temperature14°F to 176°F (-10°C to 80°C)
Temperature CompensationAutomatic
Burst Pressure2 × full scale
Response Time50 ms
Sensor Material316 stainless steel, Buna-N, PVC
Enclosure RatingNEMA 6P (IP68)
Cable Type2-conductor, shielded with filtered vent tube
Cable MaterialPUR (polyurethane)
Cable Length-S101 & S111: 40’ (12.2 m); -S121: 60’ (18.3 m)
ClassificationGeneral purpose
ComplianceCE, RoHS
Mounting KitIncluded

Compatible Products

DeltaSpan? LD31 External General Purpose Pressure Liquid Level Sensor Transmitter Compatible Products:

LI23 Series Flowline

DATA-LOOP? LEVEL INDICATOR
The general purpose loop powered tank or silo level indicator displays engineering units connected in series with one 4-20 mA continuous level transmitter, and is available with two optional relays and an isolated 4-20 mA repeater. Select this panel mount indicator for use with general purpose two-wire level sensors.

LI55 Series Flowline

DATA-VIEW? LEVEL CONTROLLER
The general purpose AC or DC powered tank or silo level controller displays engineering units with one 4-20 mA level transmitter and is offered in three configurations with optional two or four programmable relays and an isolated 4-20 mA repeater. Each relay can be configured on a single set point as a high or low level alarm, or latched on two set points for automatic fill or empty control in simplex or duplex modes. Select this panel mount controller for use with general purpose two or three-wire level sensors.

Q & A

Q&A Section with Expand/Collapse Icons

DeltaSpan? LD31 External General Purpose Pressure Liquid Level Sensor Transmitter Q & A

+ What is the accuracy specification of the DeltaSpan LD31?
± 0.25 % of full scale
+ What output signal does the device provide?
4–20 mA, two-wire (loop powered)
+ What process temperature range is supported?
14 °F to 176 °F (–10 °C to 80 °C)
+ Is there temperature compensation?
Yes — automatic temperature compensation is built in to maintain accuracy over the operating temperature range
+ What is the burst (proof) pressure rating?

2 × full scale pressure

Downloads

Download Flowline DeltaSpan LD31 Submersible General Purpose Pressure Liquid Level Transmitter

 

Contact us at (855) 737-4714 to learn more or fill out our online form.

 
You were tireless in your support and it will not be forgotten!
 
When we needed technical assistance and application support, Valin was there for us. Their knowledgeable engineers saved us an invaluable amount of time, helping us get up and running quickly. We are very happy with their services.