Miniature Rotary Torque Transducer

At a Glance

Capacities: 0-0.2Nm to 0-50Nm
1.3mV/V Output
Very Compact Size
Non-Linearity: <±0.2%/Rated Capacity
Max Speed: 8000rpm

Ultra Compact for Mounting in Tight Spaces
Ideal for Electrical Motors, Pumps and Gearboxes
Integrated Mounting Pedestal and a Detachable Cable Assembly
Slip Ring Based Design

Description

The YDSA series of miniature rotary torque transducers have a shaft-to-shaft configuration and offer a very small size for mounting in compact spaces. These small torque sensors utilise a slip ring for excitation and signal transmission and offer low-capacity torque measurement, high accuracy and high RPM capability.

Thanks to the small torque sensors’ compact size, ideal applications include the monitoring of high-speed, low-torque electrical motors and pumps.

For easy installation, the YDSA miniature rotary torque sensor features an integrated mounting pedestal and a detachable cable assembly.

Want an analogue output with a rotary torque sensor? Try our DRBK low cost rotary torque sensor with internal signal amplifier offering high 1kHz frequency response.

Need a static miniature torque sensor? Try our YDNS miniature static reaction torque sensor ideal for electrical motors, pumps and gearboxes.

Technical Specifications

Rated Capacity (RC)	Nm	0.2, 0.5, 1, 2, 3, 5, 10, 30, 50
Rated Output (FSO)	mV/V	1.3 nominal
Zero Balance/Offset	±%/Rated Output	<1 typical
Output Symmetry (cw vs ccw)	±%/Rated Output	<0.5
Non-Linearity	±%/Full Scale Output	0.2
Hysteresis	%/Full Scale Output	0.2
Repeatability	±%/Full Scale Output	0.1
Temperature Effect on Zero	±%/Full Scale Output/ ˚C	<0.005
Temperature Effect on Output	±/Applied Torque/ ˚C	<0.009
Bridge Resistance	Ohms	350 nominal
Insulation Resistance	Megaohms @ 500Vdc	300
Excitation Voltage	Volts AC or DC	10 recommended (2-15 acceptable)
Operating Temperature Range	˚C	-20 to +70
Compensated Temperature Range	˚C	-10 to +60
Storage Temperature Range	°C	-20 to +70
Safe Overload	% of Rated Capacity	150
Ultimate Overload	% of Rated Capacity	300
IP Rating (Environmental Protection)		IP50
Weight	kg	0.5
Fatigue Rating		10⁸ cycles typical
Cable Length (as standard)		3 metres
Cable Type		Ø4mm, 4-core screened
Frequency Response	ms	<10 typical
Resolution		1 part in 50,000 (with appropriate instrumentation)

Product Dimensions

YDSA Miniature Rotary Torque Transducer Outline Drawing

Capacity (Nm)	A	B	C	ØD	ØE	F	G	M	N	O	ØP	Q	R	RPM
0-0.2, 0-0.5, 0-1, 0-2	84	52	16	60	8	12	1	34.0	32	42	5.5	59	70	8000
0-3, 0-5	88	56	16	60	12	12	1	34.0	32	42	5.5	59	70	8000
0-10, 0-30	90	58	16	72	18	12	5x5	40.5	32	46	6.5	72	86	8000
0-50	118	58	30	72	18	26	5X5	40.5	32	46	6.5	72	86	8000

Capacity (Nm)	A	B	C	ØD	ØE	F	G
0-0.2, 0-0.5, 0-1, 0-2	84	52	16	60	8	12	1
0-3, 0-5	88	56	16	60	12	12	1
0-10, 0-30	90	58	16	72	18	12	5x5
0-50	118	58	30	72	18	26	5X5

Capacity (Nm)	M	N	O	ØP	Q	R	RPM
0-0.2, 0-0.5, 0-1, 0-2	34.0	32	42	5.5	59	70	8000
0-3, 0-5	34.0	32	42	5.5	59	70	8000
0-10, 0-30	40.5	32	46	6.5	72	86	8000
0-50	40.5	32	46	6.5	72	86	8000

All dimensions are in mm.

Wiring Details

Wire	Designation
Red	+ve excitation (Pin A)
White	-ve excitation (Pin C)
Black	+ve signal (Pin D)
Green	-ve signal (Pin B)
Screen	To ground - not connected to transducer body (Pin E)

Ordering Codes & Options

Core Product	Capacity (inc Engineering Units)	Cable Length (m)	Result
YDSA	0.2Nm	003	YDSA-0.2Nm-003-000
YDSA	0.5Nm	003	YDSA-0.5Nm-003-000
YDSA	1Nm	003	YDSA-1Nm-003-000
YDSA	2Nm	003	YDSA-2Nm-003-000
YDSA	3Nm	003	YDSA-3Nm-003-000
YDSA	5Nm	003	YDSA-5Nm-003-000
YDSA	10Nm	003	YDSA-10Nm-003-000
YDSA	30Nm	003	YDSA-30Nm-003-000
YDSA	50Nm	003	YDSA-50Nm-003-000