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The OMC-408 is a series of probes for the measurement of humidity and temperature in hazardous areas, incorporating the latest digital signal processing and data transmission technology. Suitable for connection to the HygroFlex range of industrial transmitters, or for use as a stand alone 4…20 mA 2 wire transmitter, the The OMC-408 probes offer wide measurement ranges and flexible installation options. The OMC-408 technology feature a custom ASIC to provide the highest possible accuracy with features such as digital calibration and probe interchangeability. Each probe is constructed throughout from high grade stainless steel, with dust, grease etc. All three probes measure over the range of 0…100 %rh thanks to the well proven Hygromer humidity sensor technology which has excellent long term stability, high tolerance to chemical contamination, and withstands exposure to condensation without any effect on calibration stability. | | 
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Technical details |
| | Humidity
> Measuring range 0 to 100% RH
> Accuracy at 23 deg. C < ± 1.5% RH between 10 to 95%
> Reproducibility < ± 0.5 %RH
> Hysteresis for a 4 hour cycle < 1% RH
> Time constant at 23 deg. C < 15 sec.
> Temperature error ± 0.5 % RH
> Linear output 4…20 mA = 0…100 %
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| | Temperature
> Measuring range –40 to +60 deg. C
> Accuracy < ± 0.5 deg. C.
> Reproducibility < ± 0.1 deg. C.
> Time constant 15 sec.
> Linear output 4…20 mA
> Measuring system Pt100, 1/3 DIN
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