4–20 mA pressure
For analogue control inputs
A two-wire pressure transmitter with factory-set full scale. The PLC applies the surface offset and pressure-to-depth conversion.
DEPTHLINK / AVAILABLE TO ORDER
Subsea Depth & Pressure Sensors
A compact absolute-pressure sensor for submerged equipment, ROVs and installation monitoring. Water pressure enters a protected sensing port; the signal reaches your controller through a Micro circular subsea connector mounted directly on the rear.
Custom mounting, materials and supporting cable assemblies.
OUTPUT SELECTIONDL-D-A DL-D-D
Pressure measured. Depth calculated.
Select a pressure range close to the working duty with suitable headroom. The controller or digital sensor converts pressure to depth using a surface reference, water density and gravity. A larger pressure range is not automatically a better depth sensor.
RS-485 pressure & depth
For vehicle control and logging
Digital pressure feedback for vehicle control and logging. Depth is calculated using the surface pressure reference and water density; agree where conversion takes place in the control system.
OPERATING PRINCIPLE01 02 03
From the sensing point to your controls.
Water → sensing port
Local water pressure reaches a protected isolation diaphragm through the nose.
Pressure → electrical signal
A compensated sensing element produces an analogue or digital pressure measurement.
Pressure → depth
Subtract the surface pressure and apply a density/gravity model; log pressure alongside the calculated depth.
Where to use it.
ROV depth feedback
Provide depth information for monitoring or control. Specify update rate, latency and the pressure range around the vehicle’s actual operating envelope.
Submerged lifts & gates
Monitor immersion or local water level. Depth feedback complements position switches; it does not directly prove mechanical position or lock engagement.
Deployment & installation
Track pressure during lowering of skids and instruments. A pressure sensor measures depth below the water surface, not altitude above the seabed.
Part number selection.
DL-D-D-100-TI-MC-M
Series – output – measurement range – housing – connector. Custom probe or mounting details are recorded on the configuration drawing.
| Option | Code | Selection |
|---|---|---|
| Output | A / D | 4–20 mA / RS-485 |
| Pressure range | 010 / 030 / 100 / 300 | 10 / 30 / 100 / 300 bar absolute full scale |
| Housing | TI / SS | Titanium preferred / 316L by environment review |
| Connector | MC-M | Rear-mounted metal-bodied Micro male |
| Mounting | Drawing suffix | Clamp position, bracket and port guard |
The range code identifies the measurement span, not a certified housing depth rating. The MC-M code identifies the rear Micro male interface; contact allocation and mating connector reference are included in the configuration drawing.
Your questions answered.
Why offer several pressure ranges?
Accuracy stated as a percentage of full scale becomes a larger absolute error as the selected range increases. A shallower range can give more useful accuracy for shallow installations.
Does temperature compensation also measure seawater temperature?
Not necessarily. Internal temperature used to compensate the pressure element may differ from ambient water temperature. Use the separate temperature sensor, or qualify a dedicated external probe for a combined instrument.
Can it measure seabed clearance?
No. Pressure gives depth below the surface. Seabed clearance needs an altimeter or other distance-measuring instrument.
Product specifications & options.
| Series | DL-D |
|---|---|
| Supply | Available to order — configured to suit your application |
| Measurement | Absolute pressure; depth calculated using a surface reference and water density |
| Output options | 2-wire 4–20 mA / RS-485 |
| Range options | 0–10 / 0–30 / 0–100 / 0–300 bar absolute measurement ranges |
| Housing options | Titanium / 316L stainless steel |
| Connector | Direct rear-mounted metal-bodied Micro male; mating cable supplied separately |
| Mounting | Clamp or bracket mounting with a protected water-access pressure port |
| Configuration documentation | Dimensions, pin allocation, supply voltage, calibrated accuracy and operating limits specified with your quotation |
| Submersion duty | Specify working depth and water conditions; the complete assembly pressure rating is selected for the application |
View all 16 standard configuration part numbers
DL-D-A-010-TI-MC-M
4–20 mA · 010 · Titanium · Rear Micro male
DL-D-A-010-SS-MC-M
4–20 mA · 010 · 316L stainless steel · Rear Micro male
DL-D-A-030-TI-MC-M
4–20 mA · 030 · Titanium · Rear Micro male
DL-D-A-030-SS-MC-M
4–20 mA · 030 · 316L stainless steel · Rear Micro male
DL-D-A-100-TI-MC-M
4–20 mA · 100 · Titanium · Rear Micro male
DL-D-A-100-SS-MC-M
4–20 mA · 100 · 316L stainless steel · Rear Micro male
DL-D-A-300-TI-MC-M
4–20 mA · 300 · Titanium · Rear Micro male
DL-D-A-300-SS-MC-M
4–20 mA · 300 · 316L stainless steel · Rear Micro male
DL-D-D-010-TI-MC-M
RS-485 · 010 · Titanium · Rear Micro male
DL-D-D-010-SS-MC-M
RS-485 · 010 · 316L stainless steel · Rear Micro male
DL-D-D-030-TI-MC-M
RS-485 · 030 · Titanium · Rear Micro male
DL-D-D-030-SS-MC-M
RS-485 · 030 · 316L stainless steel · Rear Micro male
DL-D-D-100-TI-MC-M
RS-485 · 100 · Titanium · Rear Micro male
DL-D-D-100-SS-MC-M
RS-485 · 100 · 316L stainless steel · Rear Micro male
DL-D-D-300-TI-MC-M
RS-485 · 300 · Titanium · Rear Micro male
DL-D-D-300-SS-MC-M
RS-485 · 300 · 316L stainless steel · Rear Micro male
Let’s specify your sensor.
Send your measurement range, output, working depth, mounting requirements and cable length. We’ll confirm the configuration, price and lead time.