Standard/Custom Load Cells

Helm force measurement sensors and systems are widely used in both standard and custom applications throughout the metalworking industry. Many secondary operations such as staking, riveting, welding and assembly are sensitive to variations in force and can be monitored and controlled using Helm force measurement systems.
 
Our staff of transducer engineers are available to design force sensors in measurement capacities from a few pounds to several thousand pounds.
 
Consult your HELM representative for additional information on our products and services.
 

 
Low Profile Solid Load Cell

Helm LPS Series load cells are built from high quality steel to accurately measure compression forces from .5 to 5000 tons.

The low profile design allows for easy mounting in confined areas. Special protective coatings protect the strain gage elements and an anti-rotation pin is supplied with each load cell to assure proper alignment.

LCS Series available in .5, 1, 2, 4, 6 and 8 tons.
 

 
Dimensions are shown in inches.

HCS Series available in 10, 15, 20, 25, 50, 75, 100, 200, 300, 400 and 500 tons.
 

 
Dimensions are shown in inches.

LOW PROFILE RING LOAD CELLS

Model LPR Series load cells feature a thru-hole design for applications where clearance is required through the center of the cell.

Internal hole diameters range from .250" to 1.75". All cells incorporate a machined stress riser to allow accurate measurement in a wide range of applications.
 

LCR Series available in .5, 1, 2, 4, 6 and 8 tons.


 
Dimensions are shown in inches.
 

Model	Capacity(Tons)	A	B	C	D	E	F
LCR-1K	.5	.625	.865	.250	.351	.14	.278
LCR-2K	1	.625	.865	.375	.512	.14	.310
LCR-4K	2	.750	1.115	.500	.609	.14	.404
LCR-8K	4	.750	1.115	.500	.702	.14	.404
LCR-12K	6	.875	1.365	.500	.783	.14	.466
LCR-16K	8	.875	1.365	.500	.857	.14	.466

HCR Series available in 10, 15, 20, 25, 50, 75, 100, 200, 300, 400 and 500 tons.
 

 
Dimensions are shown in inches.
 

Model	Capacity(Tons)	A	B	C	D	E	F
HCR-10T	10	1.250	2.115	.875	1.171	.25	.750
HCR-15T	15	1.250	2.115	.875	1.294	.25	.750
HCR-20T	20	1.250	2.490	1.000	1.487	.25	.875
HCR-25T	25	1.750	2.490	1.000	1.586	.25	.875
HCR-50T	50	1.750	3.240	1.250	2.143	.31	1.125
HCR-75T	75	2.250	3.240	1.250	2.471	.31	1.125
HCR-100T	100	2.250	4.740	1.500	2.882	.31	1.563
HCR-200T	200	3.500	4.740	1.500	3.790	.44	1.563
HCR-300T	300	3.500	6.240	1.750	4.608	.44	2.000
HCR-400T	400	4.000	6.240	1.750	5.224	.50	2.000
HCR-500T	500	4.000	6.740	1.750	5.775	.50	2.125

IN-LINE SERIES

Helm In-line load cells incorporate strain gages for direct measurement of any force transmitted though the longitudinal axis. The male and female threads at each end allow connection and measurement for both tension and compression forces. Capacities range from 1,000 to 30,000 pounds.
 

Low capacity in-line load cells available in 1,000, 2,000, 4,000, 6,000, 8,000 and 10,000 pounds.
 

 
 

Model	Capacity (Pounds)	A	B	C	D	E	F	G
ILS-L1	1,000	3.50"	3.00"	.50"	1/2"-13 x.50"	1/2"-13 x.50"	7/8" Hex Flats	1/4"-20 Set Screw
ILS-L2	2,000	3.50"	3.00"	.50"	1/2"-13 x.50"	1/2"-13 x.50"	7/8" Hex Flats	1/4"-20 Set Screw
ILS-L4	4,000	3.50"	3.00"	.50"	1/2"-13 x.50"	1/2"-13 x.50"	7/8" Hex Flats	1/4"-20 Set Screw
ILS-L6	6,000	3.50"	3.00"	.50"	1/2"-13 x.50"	1/2"-13 x.50"	7/8" Hex Flats	1/4"-20 Set Screw
ILS-L8	8,000	3.50"	3.00"	.50"	1/2"-13 x.50"	1/2"-13 x.50"	7/8" Hex Flats	1/4"-20 Set Screw
ILS-L10	10,000	3.50"	3.00"	.50"	1/2"-13 x.50"	1/2"-13 x.50"	7/8" Hex Flats	1/4"-20 Set Screw

High capacity in-line load cells available in 2,000, 5,000, 10,000, 20,000, 25,000 and 30,000 pounds.
 

 
 

Model	Capacity (Pounds)	A	B	C	D	E	F	G
ILS-H2	2,000	5.00"	4.00"	.60"	1"-14 x 1.00"	1"-14 x 1.00"	1 1/4" Hex Flats	1/4"-20 Set Screw
ILS-H5	5,000	5.00"	4.00"	.60"	1"-14 x 1.00"	1"-14 x 1.00"	1 1/4" Hex Flats	1/4"-20 Set Screw
ILS-H10	10,000	5.00"	4.00"	.60"	1"-14 x 1.00"	1"-14 x 1.00"	1 1/4" Hex Flats	1/4"-20 Set Screw
ILS-H15	15,000	5.00"	4.00"	.60"	1"-14 x 1.00"	1"-14 x 1.00"	1 1/4" Hex Flats	1/4"-20 Set Screw
ILS-H20	20,000	5.00"	4.00"	.60"	1"-14 x 1.00"	1"-14 x 1.00"	1 1/4" Hex Flats	1/4"-20 Set Screw
ILS-H25	25,000	5.00"	4.00"	.60"	1"-14 x 1.00"	1"-14 x 1.00"	1 1/4" Hex Flats	1/4"-20 Set Screw
ILS-H30	30,000	5.00"	4.00"	.60"	1"-14 x 1.00"	1"-14 x 1.00"	1 1/4" Hex Flats	1/4"-20 Set Screw

BUTTON LOAD CELLS

High capacity in a small size are key features in Helm button load cells. these unique force sensors combine excellent linearity and repeatability characteristics in providing accurate measurements with minimal space requirements.
 
Capacities range from 250 to 8,000 pounds.
 

Low capacity button load cells available in 250, 500, 1000, 1500, 2000, 2500, 3000, 3500 and 4000 pounds.
 

 

Model	Capacity (Pounds)
LCB-250	250
LCB-500	500
LCB-1000	1,000
LCB-1500	1,500
LCB-2000	2,000
LCB-3000	3,000
LCB-4000	4,000

High capacity button load cells available in 250, 500, 1000, 1500, 2000, 3000, 4000, 5000, 6000, 7000 and 8000 pounds.
 

 

Model	Capacity (Pounds)
HCB-250	250
HCB-500	500
HCB-1000	1,000
HCB-1500	1,500
HCB-2000	2,000
HCB-3000	3,000
HCB-4000	4,000
HCB-5000	5,000
HCB-6000	6,000
HCB-7000	7,000
HCB-8000	8,000

CALIBRATION LOAD CELLS

Helm load cells provide a accurate method of measuring load when calibrating presses. Rugged design and complete encapsulation assures an accurate and long term standard of calibration. All Helm load cells are traceable to the National Bureau of Standards and are available in 5, 10, 25, 50, 100, 250, 500, 1000, 1500 and 2000 ton capacities. They may be grouped for full capacity and uniform loading for a wide range of press sizes.
 
Load Cell Specifications:
 

Nominal output at full capacity:

• 2 millivolts per volt of excitation

Repeatability

• Within 0.1% of rated capacity

Maximum dynamic overload

• 150% of rated capacity

Zero balance

• 0.01 millivolt per volt of excitation

Bridge resistance

• 700 ohms

Maximum excitation voltage

• 15 volts D.C.

Typical excitation voltage

• 8 volts D.C.

Connector

• Amphenol 7 pin connector (#97-3102A-16S-1P)

Flatness and Parallelism

• Within 0.0002 inch