Cooper Instruments & Systems LXT 981 Torque Sensor - Manual (Page 4)

CF 189 4 Rev. E; Dec. 12, 2011
3.0 TECHNICAL CHARACTERISTICS OF THE SENSOR
No.
LXT 980 LXT 981
Accuracy class 1) 0.1 0.2
Unit Value
1 Linearity deviation incl. hysteresis %ME* <± 0.2 <± 0.1
2 Rotational Signal Uniformity (RSU) %ME* <± 0.2 <± 0.1
3 Repeatability %ME* <± 0.5 <± 0.5
Output signal in general Unit Value
4 Frequency range, -3dB point, Bessel
characteristics Hz 0…2500
5 Analog signal V 0… 10
6 Signal at torque +/- Zero 2) V ≈ 5
7 Signal at positive nominal torque V ≈ 9
8 Signal at negative nominal torque V ≈ 1
9 Calibration parameter mV/Nm ≈4000mV / Measurement range
10 Output resistance Ω 62
Effect of temperature Unit Value
11 Zero point drift over temperature %/10K <0.2
12 Signal drift over temperature within
operational temperature range 3)
%/10K <0.5
Power supply Unit Value
13 Supply voltage VDC 11…28
14 Current consumption (max.) mA 150
15 Start-up peak mA < 200
16 Absolute max. supply voltage VDC 30
General information Unit Value
17 Degree of protection acc. to EN 60529 IP 50 (64 if required)
18 Reference temperature °C +15…+35
19 Operational temperature range °C -30…+85
20 Storage temperature range °C -30…+100
Nominal torque M (bi-directional) Nm 50 100 250 500 1000 2000
21 Weight g 1280 2030 5800
22 Moment of inertia round shaft kg*mm 2 5,9 59,5 626
%ME: related to a full scale measurement range
1) The accuracy class implies that taken separately both the linearity deviation as well as the rotational
signal uniformity is either lower than or equal to the value of the accuracy class. The accuracy class is
not to be identified with the classification following DIN 51309 or EA-10/14.
2) Zero point can be set to 5V by pressing the Tera-button.
3) The factor of transmission declines linearly up to a maximum of 0.5% / 10K with rising temperature
due to the reduction of the elasticity.