DeltaSpan™ Submersible Pressure Transmitter

The general purpose two-wire pressure transmitter is offered in two configurations for different liquid types and provides contact level measurement up to 46' or 14m of water column. Select the LD31 for clean or relatively clean water, light weight oils and diluted chemical media. Application examples include ground water, ponds and wells. Select the LD32 for dirty, sludge or slurry media. Application examples include sewer or storm pump lift stations, storage and treatment with surface foam or debris where ultrasonic cannot be applied.
Corrosion resistant 316 SS transducer with polyurethane or ETFE cable jacket
270 pound tensile strength cable, maintenance free breather tube and vent filter
Rugged LD32 model features large clog and damage resistant diaphragm design

Data sheet download.
Tech Tip
For integral wiring termination and process mount, order the LD90-1001 (2" NPT) or LD90-1061 (1 1/2" G) installation kit. Each kit includes a PP junction box rated NEMA 4X, PP plug fitting and nylon cable connector. Its installation made simple.

-S_01: 0 to 5 psi (0.34 bar) 0 to 11' (0 to 3.4m) wc
-S_11: 0 to 10 psi (0.69 bar) 0 to 23' (0 to 7m) wc
-S_21: 0 to 15 psi (1.0 bar) 0 to 34' (0 to 10.4m) wc
-S_31: 0 to 20 psi (1.38 bar) 0 to 46' (0 to 14m) wc
± 0.25% of full span
Supply voltage:
13 to 30 VDC
Max. loop resist.:
900 Ohms @ 30 VDC
Signal output:
4-20 mA, two-wire
None, fixed span
Process temp.:
F: 0° to 200°
C: -10° to 93°
Temp. comp.:
Proof pressure:
2 x full span
Burst pressure:
> 35 x full span
Process mount:
1/2" NPT
Enclosure rating:
NEMA 6 (IP67)
Probe material:
LD31: 316 SS, 316L SS & Buna-N w/PVC nose
LD32: 316 SS, 316L SS & Buna-N
Cable material:
S1_1: Polyurethane
S2_1: ETFE
Cable type:
2-conductor, shielded w/vent tube
General purpose