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V-belt monitoring devices
Type Item no. ADG Euro / pc.

Sensors
to register the rotation of fans
with 2 m cable, protection class: IP 67,
Display of control condition via LED, contactless output,
Transistor with max. switching hysteresis of 2 mm,
Ambient temperature -25 – 75 °C
Two wire sensor (Standard) SN-Z3** 104966 01 63.30
Length 40 mm, ø = 18 mm
EX-Sensor Namur 101253 01 135.60

Spare parts for old equipment /
three wire sensors:
Length 40 mm, ø = 18 mm SNSa 101614 01 70.20
3 wire
Length 60 mm, ø = 18 mm, SNLa 101613 01 70.20
3 wire
Data sheet no. 10501 **standard types

EX switch amplifier Allstrom IM1-12Ex-T 100946 01 411.70
Together with a Namur sensor for the application of the
electronic V-belt monitor in EX areas, zone 2.
Application fields: [Exia] IIC / IIB and Ex nA nC [nL] IIC / IIB T4
One channel. Intrinsically safe control circuit with
monitoring of wire breakage and short-circuit.
In case of error, all outputs are switched off.
The EX amplifier with transistor output is interconnected
between the Namur sensor and the EKW.
LED with two colors to visualize the switching condition
(yellow) and the disturbance (red). Green LED to indicate
the operating state.
Supply voltage: 20 – 250 V AC / 20 – 125 V DC
(40 – 70 Hz)
Power input: ≤ 3 W
Switching voltage: ≤ 30 V DC
Switching current: ≤ 50 mA
Permiss. amb. cond.: -25 – 70 °C, 0 – 95 % RH
(non-condensing)
Protection class: IP 20
Dimensions: 18 x 104 x 110 mm (L x W x D)
EX authorisation according to the certificate of conformity:
TÜV 04 ATEX 2553
Data sheet no. 10162

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