Submersible S-Beam Load Cell | IP68 Waterproof | DBBSUB

At a Glance

Description

Applied Measurements DBBSUB submersible S-Beam load cell is ideal for tension and compression measurement in situations involving permanent submersion in water. They are hermetically sealed to IP68 to a depth of 10m/1bar making them ideal for flood susceptible locations, submersible and hydrostatic applications.

The permanently submersible s-beam load cell has a dual bending beam design to ensure inherently high accuracy and enables us to guarantee performance well within specification.

Our DBBSUB permanently submersible load cell can be supplied with specialised rod end bearings further guaranteeing the transducer’s optimum performance. For fast and simple installation they can be supplied with custom designed mounting plates and fixtures.

If you require an IP67 rated S-Beam load cells with capacities of less than 50kg or greater than 10,000kg, our DBBSM series of S-Beam load cells covers load ranges from 0-1kg (10N) up to 0-30,000kg (300kN).  Meanwhile, if you need to fit into a restricted space, Applied Measurements DBBSMM range of miniature S-Beam load cells will fit the bill.

Technical Specifications

Rated Capacity (RC)	kN	0-0.5, 0-1, 0-2, 0-5
Operating Modes	Tension/Compression / Tension & Compression
Sensitivity (RO)	mV/V	2 ± 0.1% (1±0.2% on 0.5kN capacity)
Pressure Sensitivity	%/FS/bar (metre)	<0.05 (<0.005)
Zero Balance/Offset	±%/Rated Output	5
Zero Return after 30 mins	±%/Applied Load	<0.02
Output Symmetry (tension vs. compression)	±%/Rated Output	<0.1
Non-Linearity	±%/Rated Output (BFSL)	<0.02
Hysteresis	% / Rated Output	<0.02
Repeatability	±%/Rated Output	<0.02
Temperature Effect on Zero	±%/Rated Output/˚C	<0.002
Temperature Effect on Sensitivity	±%/Rated Output/˚C	<0.001
Input Resistance	Ohms	1100 ± 50
Output Resistance	Ohms	1000 ± 2
Insulation Resistance	Megohms	>5000 @ 100Vdc
Excitation Voltage	Volts AC or DC	10 recommended (2-15 acceptable)
Operating Temperature Range	˚C	-40 to +80 (ATEX -40 to +60)
Compensated Temperature Range	˚C	-10 to +40
Storage Temperature Range	˚C	-40 to +80
Safe Overload	% of Rated Capacity	200
Ultimate Overload	% of Rated Capacity	300
Deflection @ Rated Capacity	mm	0.3 nominal
Fundamental Resonant Frequency*	Hz	see dimensional table
IP Rating (Environmental Protection)		IP68 up to 10m water depth/1bar
Weight (excluding cable)	kg	0.55
Fatigue Life		108 cycles typical (109 cycles on fatigue-rated version)
Cable Length (as standard)	metres	6m
Cable Type		Shielded, 4 conductor cable (AWG 24) Ø5mm, Cable jacket polyurethane (PUR)
Construction Material		17-4 PH Stainless Steel Body. 303 Stainless Steel (Cable Gland)
Resolution		1 part in 250,000 (with appropriate instrumentation)
*The resonant frequency is calculated with the body of the load cell attached to a large plate, ensuring that only the sensing element oscillates: This is vital to achieve the highest natural frequency and subsequent frequency response.

Product Dimensions

Capacity (kN)	H	L	W	Threads T	Resonant Frequency Hz
0.5	61.5	61.5	30	M12	400
1	61.5	61.5	30	M12	500
2	61.5	61.5	30	M12	700
5	61.5	61.5	30	M12	1000

All dimensions are in mm

Wiring Details

Wire	Designation
Green	+ve excitation
Black	-ve excitation
White	+ve signal
Red	-ve signal
Shield	To ground - not connected to load cell body

Ordering Codes & Options

Core Product	Capacity (inc Engineering Units)	Cable Length (m)	Specials Code	Example Result
DBBSUB	0.5kN	006	000	DBBSUB-0.5kN-006-000
DBBSUB	1kN	006	000	DBBSUB-1kN-006-000
DBBSUB	2kN	006	000	DBBSUB-2kN-006-000
DBBSUB	5kN	006	000	DBBSUB-5kN-006-000

How To Install An S-Beam Load Cell

Our Applied Measurements experts have put together a 5-step guide to demonstrate how to correctly install an S-beam load cell.

Step 1 – Keep the Forces Centrally Aligned

To reduce any off-axis loading, forces must be centrally aligned through the centre of the load cell.  We can supply optional load buttons and rod ends which work to reduce any side loading.

Step 2 – Do Not Overtighten the Rod Ends and Load Buttons

When using rod ends and load buttons be sure not to overtighten them when attaching them to the S-beam load cell.  As this can cause damage to the load cell.

Step 3 – Always Leave a Gap

Ensure that the rod ends and load buttons do not touch the central beam.  If a gap is not maintained, the central beam will not be able to move freely when tension or compressive force is applied.

Step 4 – Mount on a Flat Surface

Always secure the S-beam load cell to a clean, flat surface of better than 0.005mm surface flatness.

Step 5 – Contact with Active Area Only

When installing the S-beam load cell ensure the load is applied to the active end area only.