C18

The C18 compressive force transducer is suitable for use as a transfer standard or reference transducer. Class 0.5 per ISO376.

C18

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C18 Reference Force Transducer: Transfer Devices for Large Compressive Forces

The C18 reference force transducer measures compressive force based on the ring torsion principle and is, therefore, particularly insensitive to temperature gradients, lateral force and bending moment. As far as capacity is concerned, the transducer is small and light-weight, and therefore, easy to transport and install in different locations. Its hermetically sealed stainless steel design, with an IP68 degree of protection, ensures a robust performance and long-term stability.

The C18 series covers capacities ranging from 10 kN to as high as 5 MN. Besides, it meets the requirements of a transfer device for traceability of a force measurement machine to a standard. The transducer is also well-suited for use as a working sensor in calibration machines or as a working standard in companies that need to ensure dependable traceability of measuring equipment. The C18 is used in many national metrology institutes and is also well-suited to mobile applications as well as in the extremely precise determination of the center of gravity, for example, of an aircraft.

A C18 transducer is always calibrated, and comes complete with a mounting base and thrust piece. No additional load application parts are required. Overall, the C18 provides users with an extremely cost-effective solution.

Accuracy class (ISO376): 0.5
HBK accuracy class: 0.02
Capacity: 10 kN to 5 MN

Meets ISO376 Requirements

Meets the requirements of ISO376 Class 0.5 in terms of measurement accuracy
Insensitive to bending moment; low influence of temperature gradients due to ring torsion principle
Wide measuring range for calibration tasks, ranging from 2 kN to 5 MN
Calibrated force application parts, complete with mounting base and thrust piece

Precise measurement results with large capacities, excellent price/performance ratio

Tested Robustness

Extremely robust, IP68 degree of protection – unusual for this accuracy class. Test conditions: 100 hours, 3 m water column
HBK’s commitment: Every transducer is tested in HBK’s in-house EMC laboratory, and has a CE conformity marking
Robust cable with kink protection
Stainless steel design
Available for delivery as a 5 MN sensor

High reliability, even in harsh environments, due to its extremely robust design

Easy Mobile Use

Small diameter, compact design and light weight; based on ring torsion principle (relative to capacity)
User-friendly: For large capacities, the mounting base and the sensor can be separately installed
Laser markings allow for easy alignment of mounting base and force transducer; optimal repeatability is guaranteed.
Plug assembly on request
Highly attractive: C18 combined with the QuantumX MX430B and QuantumX MX238B high-precision measuring amplifiers – calibrated as a measurement chain on request

Suitable for mobile use, light-weight and compact dimensions

Code	Capacity group	Capacity (nominal load) [N]	Capacity (nominal load) [lbf]	Calibration	Height (without accessories)	Height (without accessories)	Diameter (without cable or plug)	Diameter (without cable or plug)
1-C18/200KN	50-500 kN	200 kN	45 klbf	Calibrated	89 mm	3.5 in	75 mm	2.95 in
1-C18/20KN	1-50 kN	20 kN	4.5 klbf	Calibrated	72 mm	2.83 in	70 mm	2.76 in
1-C18/500KN	50-500 kN	500 kN	112 klbf	Calibrated	157 mm	6.18 in	130 mm	5.12 in
1-C18/1MN	>500 KN	1 MN	225 klbf	Calibrated	171 mm	6.73 in	150 mm	5.91 in
1-C18/5MN	>500 KN	5 MN	1124 klbf	Calibrated	303 mm	11.93 in	275 mm	10.83 in
1-C18/3MN	>500 KN	3 MN	674 klbf	Calibrated	254 mm	10 in	230 mm	9.06 in
1-C18/100KN	50-500 kN	100 kN	22.5 klbf	Calibrated	89 mm	3.5 in	75 mm	2.95 in
1-C18/50KN	1-50 kN	50 kN	11.2 klbf	Calibrated	72 mm	2.83 in	70 mm	2.76 in
1-C18/300KN	50-500 kN	300 kN	67 klbf	Calibrated	112 mm	4.41 in	95 mm	3.74 in
1-C18/2MN	>500 KN	2 MN	450 klbf	Calibrated	239 mm	9.41 in	230 mm	9.06 in
1-C18/10KN	1-50 kN	10 kN	2.25 klbf	Fulfills ISO 376	72 mm	2.83 in	70 mm	2.76 in

File	Description	Type	Languages	Size
C18 - Data Sheet (B00872)	C18 - Data Sheet	Technical Document	English	65 KB
C18 - Mounting instructions (A00886)	C18 - Mounting Instructions	Technical Document	English, German	206 KB
C18 - EU Declaration of Conformity (ce210)	C18 - EU Declaration of Conformity	Certificate	English	632 KB

C18
Capacity group	>500 KN, 50-500 kN, 1-50 kN
Capacity (nominal load) [N]	1 MN, 500 kN, 10 kN, 20 kN, 300 kN, 100 kN, 3 MN, 50 kN, 2 MN, 5 MN, 200 kN
Capacity (nominal load) [lbf]	225 klbf, 112 klbf, 2.25 klbf, 4.5 klbf, 67 klbf, 22.5 klbf, 674 klbf, 11.2 klbf, 450 klbf, 1124 klbf, 45 klbf
Capacity in N (nominal load)	1000000 N, 500000 N, 10000 N, 20000 N, 300000 N, 100000 N, 3000000 N, 50000 N, 2000000 N, 5000000 N, 200000 N
Direction	Compression
Strain gauge / piezo	Strain Gauge
Calibration	Calibrated, Fulfills ISO 376
Output signal	mV/V (passive strain gauge)
HBK Accuracy class	0.5 (ISO376)
Degree of protection	IP68
Mechanical adaptation	Spherical load introduction
Height (without accessories)	171 mm, 157 mm, 72 mm, 112 mm, 89 mm, 254 mm, 239 mm, 303 mm
Height (without accessories)	6.73 in, 6.18 in, 2.83 in, 4.41 in, 3.5 in, 10 in, 9.41 in, 11.93 in
Diameter (without cable or plug)	150 mm, 130 mm, 70 mm, 95 mm, 75 mm, 230 mm, 275 mm
Diameter (without cable or plug)	5.91 in, 5.12 in, 2.76 in, 3.74 in, 2.95 in, 9.06 in, 10.83 in

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C18

C18 Reference Force Transducer: Transfer Devices for Large Compressive Forces

Meets ISO376 Requirements

Tested Robustness

Easy Mobile Use

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