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STRAIN-GAUGE EMBEDDED ANALOGUE AMPLIFIERS
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)
| 4-20 mA 3 wires | 4-20 mA 2 wires | 4-20 mA C6 | 0...10 V | -10...0...+10 V | |
|---|---|---|---|---|---|
| Type (-) | 4-20 mA | 4-20 mA | 4-20 mA (ATEX and / or IECEx and / or CSA) | 0...10 V | -10...0...+10 V |
| Wiring (wires) | 3 | 2 | 2 | 3 | 3 |
| Input range (-) | 0.5...2.5...5.5 mV/V | 0.5...2.5...5.5 mV/V | 0.5...2.5...5.5 mV/V | 0.5...2.5...5.5 mV/V | 0.5...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 VDC | 0.5...2 | 0.5...2 | 5 ± 0.1 VDC | 5 ± 0.1 VDC |
| Impedance of Wheatstone bridge (ohm(s)) | 350...5000 | 350...5000 | 1000...5000 | 350...5000 | 350...5000 |
| Output signal (-) | 4...20 | 4...20 | 4...20 | 0...10 | -10...0...+10 |
| Load resistance (ohm(s)) | <= 1000 | <= 750 | <= 750 | > 5000 | > 10 000 |
| Bandwidth (Hz) | DC...1000 | DC...1000 | DC...1000 | DC...1000 | DC...1000 |
| Reference temperature (°C) | 23 | 23 | 23 | 23 | 23 |
| 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...0.051 | 0.07...0.14 | 0.07...0.14 | 0.02...0.051 | 0.02...0.051 |
| Temperature coefficient of zero signal (% F.S.*/10°C) | 0.004...0.0015 | 0.01...0.05 | 0.01...0.05 | 0.004...0.015 | 0.004...0.015 |
| Power supply (-) | 10...30 VDC | 7.5...30 VDC | 7.5-9...28 VDC | 13...30 VDC | 15...18 VDC |
| Consumption (max.) (mA) | <= 45 | Same as the measured signal | Same 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.
