Inductive sensor
For rotary actuators
NI4-DSU26TC-2Y1X2
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ATEX category II 2 G, Ex zone 1
ATEX category II 1 D, Ex zone 20
SIL2 (Low Demand Mode) acc. to IEC
61508, PL c acc. to ISO 13849-1 at HFT0
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SIL3 (All Demand Mode) acc. to IEC
61508, PL e acc. to ISO 13849-1 with re-
dundant configuration HFT1
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Rectangular, housing DSU26
Plastic, PP-GF30-VO
Two outputs for monitoring the position
of rotary actuators
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Mounting on all standard actuators
DC 2-wire, nom. 8.2 VDC
2 outputs acc. to DIN EN 60947-5-6 (NA-
MUR)
Type designation
NI4-DSU26TC-2Y1X2
1051005
Ident-No.
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Terminal chamber
Rated switching distance Sn
Mounting conditions
Correction factors
Repeat accuracy
4 mm
Non-flush
Wiring Diagram
St37 = 1; Al = 0.3; stainless steel = 0.7; Ms = 0.4
ð 2 % of full scale
ð ± 10 %
Temperature drift
Hysteresis
1…10 %
Ambient temperature
-25…+70 °C
Output function
4-wire, NAMUR
Exi (max. 30 V)
0.05 kHz
Valve control
Switching frequency
Voltage
Nom. 8.2 VDC
Non-actuated current consumption
Actuated current consumption
ï 2.1 mA
ð 1.2 mA
Functional principle
Inductive sensors detect metal objects con-
tactless and wear-free. Dual sensors are es-
pecially designed for position detection in ro-
tary actuators. They combine the reliability of
non-contact inductive sensors with the flexibil-
ity of a modular housing system.
Approval acc. to
KEMA 02 ATEX 1090X
Design
Dual sensor for valve monitoring,DSU26
Dimensions
68 x 60 x 35.4 mm
Housing material
Active area material
Electrical connection
Clamping ability
Vibration resistance
Shock resistance
Protection class
MTTF
Plastic, PP-GF30, Yellow
Plastic, PP-GF30, black
Terminal chamber
ð 2.5 mm2
55 Hz (1 mm)
30 g (11 ms)
IP67
6198 years acc. to SN 29500 (Ed. 99) 40 °C
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Packaging unit
Switching state
2 × LEDs, Yellow/Red
Included in delivery
2 cable glands (blue), 1 blanking plug
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TURCK Inc. ñ 3000 Campus Drive Minneapolis, MN 55441-2656 ñ Phone: 763-553-7300 ñ Application Support: 1-800-544-7769 ñ Fax 763-553-0708 ñ www.turck.com