IQ Sensor Net System IQ Sensor Net EX-Isolated Amplifier

Overview Specifications Documentation & Tools


The WTW IQ Sensor Net EX-Isolated amplifier is installed outside the zone and supplies the monitor within the zone with it's own intrinsic power circuit. In addition, it transfers the meaured value via an mA output or via HART (optional).

Product Features
  • Supplies the monitor with auxiliary energy and transfers the measured value
  • Can be integrated with WTW IQ Sensor Net System
  • Highest safety, even at high ambient temperatures
  • Safe separation and isolation of input, output and auxiliary power
  • Can be connected to the IQ SENSOR NET

The WG 21 is also available with a 24 V AC/DC auxiliary voltage and can therefore be integrated into the IQ SENSOR NET.

Available Versions

WG 21 A7 - EX isolated amplifier - SKU: 109446EX
WG 21 A7 Opt. 336 - EX isolated amplifier, with auxiliary voltage - SKU: 109447EX
WG 21 A7 Opt. 470 - EX isolated amplifier, with HART - SKU: 109448EX
WG 21 A7 Opt. 336, 470 - EX isolated amplifier, with auxiliary voltage & HART - SKU: 109449EX



IQ Sensor Net EX-Isolated amplifier
Current loop
Intrinsically safe supply voltage ≥ 18 V
4 … 20 mA
Modular housing A7, with snap-on mounting for top-hat rail 35 mm, according to DIN EN 50022
Protection Rating
IP40, terminals IP20
Explosion protection
II (1)G [Ex ia Ga] IIC
EN 61326-1, class B
3 years on defects in quality according to § 10 terms of conditions
Documentation & Tools

Documentation & Tools