Description
The CIR voltage or current amplifiers have been designed to enable the user to adapt non-amplified strain gauge transdu- cers (load cells, pressure transducers) to acquisition systems, PLC, instrumentation with high level inputs.
The availability of the output in voltage or current enables the signal to be carried over long distances or used in intelligent automation systems.
TECHNICAL DATA OF CIR
| Model | Voltage B/C/M/N | Current E | meas. unit |
| Linearity error (FSO) | <0.05 | <0.05 | % |
| Primary sensor resistance (± 10%) | 350 or 700 | 350 or 700 | Ω |
| Primary sensor sensitivity | 2 or 3 | 2 or 3 | mV/V |
| Output load resistance | > 10 | see diag. | KΩ |
| Supply voltage | 15…30 | 12…30 | Vdc |
| Current drain with sensor connected | < 33 | ≤ 20 | mA |
| Supply voltage to transducer | 10 | 0,9 | Vdc |
| Output signal at zero | B/C = 0,1Vdc M/N = 0Vdc | E = 4mA | |
| Zero signal accuracy (FSO) | < ± 0,1 | < ± 0,1 | % |
| Zero adjustment (FSO) | > ± 10 | > ± 10 | % |
| Full scale output | B = 5,1Vdc C = 10,1Vdc M = 5Vdc N = 10Vdc | E = 20mA | |
| F.S. output accuracy | < ± 0,1 | < ± 0,1 | % |
| Span adjustment | > ± 10 | > ± 10 | % |
| Inverse polarity protection | YES | YES | |
| Accidental shortcircuit protection | YES | YES | |
| Response time (10…90%FSO) | ≈ 6 | ≈ 6 | ms |
| Output noise (RMS10…400Hz) | -60 | -60 | db |
| Temp. range: Compensated (%FSO) Working Storage | 0…70 -10…+80 -50…+100 | 0…70 -10…+80 -50…+100 | °C °C °C |
| Typical thermal drift of zero (%FSO/°C) | ± 0,01 | ± 0,01 | |
| Typical thermal drift of span (%FSO/°C) | ± 0,01 | ± 0,01 | mt |
| Length of output cable | 1 | 1 |
| Case material | Stainless steel / Anodisez alum. |
| Grade of protection | IP65 | IP65 | EN 60529 |
| The electrical characteristics are those measured with Vsupply.=24VRL = 1MΩ (Voltage) RL = 500 Ω (Current) Amb. temp = 25°C |
