Hottinger Baldwin Messtechnik T20WN User Manual

T20WN

Torque
transducers

Special features

- Nominal (rated) torques 0.1 NVm,

0.2 NVm, 0.5 NVm, 1 NVm, 2 NVm,
5 NVm, 10 NVm, 20 NVm, 50 NVm,
100 NVm, 200 NVm

- Accuracy class: 0.2

- Contactless transmission of

measurement signals

- Measurement on rotating or
stationary parts

- Cylindrical shaft ends for
non‐play friction joints

- Integrated measurement system
for rotational speed and angle of
rotation

- Torque output signal "10 V

Data Sheet

Installation example with bellows couplings

Side A

Measuring side

Two of the couplings provided are needed for this example

Side B

Drive side

Specifications - T20WN

Type T20WN

Accuracy class 0.2

Torque measuring system

Nominal (rated) torque M

Nominal (rated) sensitivity (nominal

(rated) signal range between torque = zero
and nominal (rated) torque)

Sensitivity tolerance (deviation of actual
output quantity at M
(rated) signal range)

from nominal

nom

nom

Output signal at torque = zero V 0"0.2

Nominal (rated) output signal

at positive nominal (rated) torque V +10

at negative nominal (rated) torque V ‐10

Load resistance MΩ > 1

Long‐term drift over 48 h mV <"50

Cut‐off frequency (‐3 dB) Hz 200

Residual ripple
Group delay

Temperature effect per 10 K in nominal
(rated) temperature range

on the output signal, related to the actual
value of the signal span

on the zero signal, related to the nominal
(rated) sensitivity

Power supply

Nominal (rated) supply voltage (separated
extra‐low voltage (SELV))

Calibration signal triggering V 5 - 13.2

Current consumption in measuring mode A < 0.2

Nominal (rated) power consumption W < 2.4

Max. ripple on
supply voltage

Non‐linearity including hysteresis, re
lated to nominal (rated) sensitivity

Relative standard deviation of the re
peatability per DIN 1319, related to the

variation of the output signal

Calibration signal V +10"0.2%

Measurement system for rotational speed/angle of rotation

Measurement system optical

Pulses per revolution Number 360

Output signal V

Minimum rotational speed for sufficient
pulse stability

Load resistance kΩ >10

Group delay μs < 3

Max. measurable rotational speed min

General data

EMC

Immunity from interference (DIN

EN50082‐2)

Electromagnetic field

Housing V/m 10

Leads V

Magnetic field A/m 100

Burst kV 2/1

ESD kV 4/8

N⋅m 0.1 0.2 0.5 1 2 5 10 20 50 100 200

V 10

mV

%

ms

PP

"0.2

< 80

< 1.0

% "0.1

% "0.2

V (DC) 12 (10.8 - 13.2)

mV

pp

% <"0.1

% <"0.05

5 (asymmetrical); two square wave signals approx. 90° phase shifted

‐1

min

(without VK20A, the group delay is dependent on the connected impedance / cable &

‐1

PP

for 1.5 m cable between T20WN and junction box VK20A

evaluating device)

3000

200

0

10