Donut Load Cell | Annular Load Cell | Load Washer | CCG

At a Glance

Description

Applied Measurements CCG low profile donut load cell (also known as an annular load cell, force washer or load washer) has been designed for applications where bolt tension needs to be measured with a very low-profile transducer.  They are also used in cable tension measurement applications where they are mounted at the anchor point to provide continuous monitoring.

The annular donut load cell design is inherently stiff which gives it an excellent frequency response allowing it to be used for transient measurements if required, while its rugged stainless steel construction and IP66 ingress protection rating ensure a long and maintenance-free life.

Our annular donut load cell design is one that customised regularly to suit a multitude of applications, these include even lower height versions, the current record for which stands at 5mm, fully submersible IP68 versions and versions with inserts to allow the use of a single load cell with multiple sizes of bolt.  We have also constructed very high capacity versions, with 3000kN / 300 tonnes being the largest manufactured to date, however, it is possible for us to manufacture versions rated to 15MN / 1500 tonnes and above for extreme applications.

Additionally, if you can allow the space for a taller load cell, the accuracy can be vastly improved by doubling the standard height.  So, if you need a special version to suit your application please call your Applied Measurements expert technical team who will be happy to discuss your required specification in detail, or use our contact form in the sidebar.

Technical Specifications

Rated Load (kN)	12.5, 25, 35, 50, 100, 160, 200, 250, 300, 360, 540
Maximum Overload	150% of rated load
Output Sensitivity	1.5mV/V nominal
Zero Offset	<±5% of rated load
Non-Linearity	<±1.5%/rated load (between 50% and 100% of rated load) <±5%/rated load (between 20% and 50% of rated load)
Hysteresis	<±1.5%/rated load (between 50% and 100% of rated load) <±5%/rated load (between 20% and 50% of rated load)
Repeatability	<±1% (if mounting position remains unchanged) <±10% (if mounting position is changed)
Excitation Voltage	2-10Vdc recommended, 15Vdc maximum
Bridge Resistance	700Ω
Insulation Resistance	>500MΩ @ 100Vdc
Operating Temperature Range	-20 to +70°C
Compensated Temperature Range	-10 to +50°C
Zero Temperature Coefficient	<±0.03%/rated load/°C
Span Temperature Coefficient	<±0.03%/rated load/°C
Environment Protection Level	IP66 (IP67 optional)
Connection Type	2m, 4-core PVC screened cable, exiting via cable gland

Product Dimensions

Model	Rating (kN)	ØA	ØB	ØC	H	Resolution (kN)	Weight (kg)
CCG	12.5	6.1	10.4	25	12	0.05	0.05
CCG	25	8.2	14	25	12	0.10	0.05
CCG	35	10.2	17.7	32	12	0.20	0.09
CCG	50	12.2	21.3	38	15	0.20	0.13
CCG	100	16.3	29	48	20	0.50	0.25
CCG	160	20.3	33	50	20	0.50	0.28
CCG	200	22.3	37.2	55	25	1.00	0.38
CCG	250	24.3	43.5	60	25	1.00	0.51
CCG	300	27.3	45.5	63	25	1.00	0.51
CCG	360	30.5	50	75	30	2.00	0.90
CCG	540	36.5	60.1	88	50	2.00	1.20

All dimensions are in mm

Wiring Details

Wire	Designation
Red	+ve excitation
Blue	-ve excitation
Green	+ve signal
Yellow	-ve signal
Screen	To ground - not connected to load cell body

Ordering Codes & Options

Core Product	Capacity (inc Engineering Units)	Cable Length (m)	Specials Code	Example Result
CCG	12.5kN	002	000	CCG-12.5kN-002-000
CCG	25kN	002	000	CCG-25kN-002-000
CCG	35kN	002	000	CCG-35kN-002-000
CCG	50kN	002	000	CCG-50kN-002-000
CCG	100kN	002	000	CCG-100kN-002-000
CCG	160kN	002	000	CCG-160kN-002-000
CCG	200kN	002	000	CCG-200kN-002-000
CCG	250kN	002	000	CCG-250kN-002-000
CCG	300kN	002	000	CCG-300kN-002-000
CCG	360kN	002	000	CCG-360kN-002-000
CCG	540kN	002	000	CCG-540kN-002-000