EN

Strain Ring with Radial Cable
DSRC BT
Features
• OEM execution
• Installation without surface preparation
• Ideal for permanent installation
• For tension and compression measurements
• For cyclical applications only, i.e. clamping
force on presses
Electrical Data
Strain Gage Data
Strain gage type
Foil gages
Bridge resistance
at 24 °C
350 Ω 2 x quarter bridge
(without cable)
Sensitivity
at 24 °C
Gage factor K= 2.00 ±0,5%
(compensated with resistors)
Temp. compensation
Steel
Transverse sensitivity
nominal
+0,7%
Bridge circuit
2 x 1/4 bridge
(see electrical connections)
Mechanical Data
Connection
Open leads
Material
- Ring
- Protective foil
- Screws
Aluminum anodized
Stainless steel
M8 (torque 3 Nm)
Cable
5m
2 core, shielded, PVC
Environmental Conditions
Surface installation spot Ra 3.2 (N8) or better
Operating temp. range -10...+60 °C
Storage temperature
-40...+100 °C
Protection class
IP 54
3.8
Measuring range
±1000 µε
(1 µε = 0,001 mm/m resp.
1 µε equals 0,001 mm strain per meter of shaft)
Output signal 1 mV/V
per 1000 µε(with completed full bridge)
Combined error Linearity
Hysteresis
< 1% FS
< 0,5% FS
< 0,5% FS
Repeatability
< 0,2% FS
Zero, bridge balance
< ±200% FS (depending on installation) Since the gages are pressed-on, the bridge can have any arbitrary zero offset after the ring is mounted. Baumer amplifiers and display boxes are equipped with a reset function to tare this offset. The
bridge should be reset before each measuring cycle.
Excitation max.9 VDC
Recommended5 VDC
Signal polarity
The signal polarity depends
on the bridge circuit.
In combination with Baumer amplifiers, the polarity is positive under tensile load.
Rise time (10 - 90%)
< 1 ms (on steel)
www.baumer.com
DSRC BT
Dimensions (mm)
ca. 56
5m
M8
50
ØD + 34
Ød
ØD
2 ... 3
3
+0,1
Ø d = Ø D - 0,5
3.2
25
Ø D
Ø d
ε
= Nominal diameter
= Shaft diameter
= Strain
= Gage location
Electrical Connections
EXC.+
Bridge Circuit
R
Wire Color
(per ring half)
S/G 22
DMS
C
brown
white
SIG.+
R
Wiring Diagram
brownS/G
whiteS/G
SIG.-
S/G
DMS11
ColorSignal
Option /CN
C
EXC.-
Amplifier
DSRC
Series 423
4
5
3
6
2
1
PinSignal
1
S/G 1
2
S/G 1
3n.c.
Potential equalisation, low impedance
4
S/G 2
5
S/G 2
6n.c.
www.baumer.com
3.9
Strain Ring with Radial Cable
DSRC BT
Typical Measuring Chain
Order Code
DSRC BT
M/
Option
/CM
Connector 4 pin male
installed (Connecting
display box)
/CN Connector 6 pin male installed (Connecting
Amplifier)
3
/CL10 Cable length 10 m
/CL10CM Cable length 10 m
with connector 4 pin
/CL10CN Cable length 10 m
with connector 6 pin
1
Unit
M Metric sizes
2
Pos.Qty Type
Description
1
1
DSRC Type BT
Strain ring with
radial cable
2
1
DABU MP4M
Bridge amplifier
3
1
DZMT TW-A1-6
Torque wrench
Nominal diameter*
Metric (M)
020
025
028
030
035
038
040
045
048
050
053
055
060
065
070
075
080
085
090
095
100
105
110
115
120
125
130
135
140
145
150
155
160
165
170
180
185
190
195
200
205
220
225
230
240
250
260
270
300
335
350
360
* Other diameters available upon request
Accessories
3.10
Torque wrench, variable
adjustable range 1 - 6 Nm
Order code: DZMT TW-A1-6
Torque wrench fix
factory setting 3 Nm
Order code: DZMT TW-F3
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