STRAIN-GAUGE EMBEDDED ANALOGUE AMPLIFIERS


CE ATEX

These analogue amplifiers convert the signal from a Wheatstone bridge (mV/V) into a robust industrial standardised analogue signal.

o Internal or external mounting depending on the size of the transducer
o If external, cylindrical housing in nickel-plated brass (IP67) or rectangular box in aluminium (low-cost version) (IP65)
o Available version with shifted zero for bidirectional utilisation for versions 4...20 mA and 0...10 V.
o Protection against inversion of polarity
o Cable length: 0.15 m between the amplifier housing and the transducer (max. 0.5 m)

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4-20 mA 3 wires4-20 mA 2 wires4-20 mA C60...10 V-10...0...+10 V
Type (-)4-20 mA4-20 mA4-20 mA (ATEX and / or IECEx and / or CSA)0...10 V-10...0...+10 V
Wiring (wires)32233
Input range (-)
0.5...2.5...5.5 mV/V0.5...2.5...5.5 mV/V0.5...2.5...5.5 mV/V0.5...2.5...5.5 mV/V0.5...2.5 mV/V
Combined error (non-linearity + hysteresis) (% F.S.*)<± 0.02<± 0.02< ± 0.02<± 0.02<± 0.02
Sensor excitation (-)5 ± 0.1 VDC0.5...20.5...25 ± 0.1 VDC5 ± 0.1 VDC
Impedance of Wheatstone bridge (ohm(s))350...5000350...50001000...5000350...5000350...5000
Output signal (-)4...204...204...200...10-10...0...+10
Load resistance (ohm(s))<= 1000<= 750<= 750> 5000> 10 000
Bandwidth (Hz)
DC...1000DC...1000DC...1000DC...1000DC...1000
Reference temperature (°C)2323232323
Compensated temperature range (°C)-10...+45-10...+45-10...+45-10...+45-10...+45
Service temperature range (°C)
-40...+85-40...+85-40...+85-40...+85-40...+85
Temperature coefficient of the sensitivity (% F.S.*/10°C)0.02...0.0510.07...0.140.07...0.140.02...0.0510.02...0.051
Temperature coefficient of zero signal (% F.S.*/10°C)0.004...0.00150.01...0.050.01...0.050.004...0.0150.004...0.015
Power supply (-)
10...30 VDC7.5...30 VDC7.5-9...28 VDC13...30 VDC15...18 VDC
Consumption (max.) (mA)<= 45Same as the measured signalSame as the measured signal<= 23<= 25

*F.S. : Full Scale.
** : 24 VDC is acceptable if impedance of the Wheatstone bridge >= 1000 ohms.
*** : according to the impedance of the Wheatstone bridge.
Specifications subject to change without notice.

Typical Applications
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