Chilled mirror condensation technology provides highly precise,
stable and repeatable results. Water vapor condenses onto a temperature
controlled highly polished mirror surface and this ‘dew point’ is
detected with advanced optical electronics. Since dew point is specific
to water vapor concentration and not temperature dependent, measurement
precision is consistent across the full application range including
high temperature and humidity conditions in climatic test chambers.
MBW chilled mirror hygrometers have a typical service life of more than
15 years thanks to the use of high quality materials and Swiss
precision engineering. The high quality platinum resistance thermometer
(PRT) element embedded within the mirror ensures excellent calibration
stability. With precise measurements for dew point and temperature
together with stability and long service life, MBW chilled mirrors are
used by national standards and accredited laboratories worldwide. The
473 transfers reference standard performance into applications such as
climatic chamber validation, relative humidity calibrators and a wide
range of industrial processes.
The 473 features a 5.7” color touch screen with a high contrast ratio and wide viewing angle for clear and easy readability. Using the on-screen buttons and menus, each line of the instrument display can be configured for a variety of humidity, moisture, temperature and pressure parameters that may be viewed in the units of choice. These parameters can be displayed either numerically or graphically with user-configurable axes enabling measurement trends and stability to be confirmed without the need for external data acquisition or display hardware.
The 473 is available with different measuring heads together with
temperature and
pressure sensor options to meet the requirements of a wide range of
applications.
Users can easily check the 473 system’s stability at any time using
the built-in ice test function. This automated test procedure allows
the user to confirm that ice on the mirror melts at 0 °C and verifies
the stability of the mirror temperature measurement system.
It can be supplied with certificate of factory (MBW Calibration
Ltd.) calibration according to ISO17025 standard in points: -20, 0, 35,
70 °C Dew Point, 5, 25, 50 °C Temperature.
PARAMETER: | VALUE |
---|---|
Measuring Ranges: Frost/Dew Point: | -20…+70 °C (473-RP2) -30…+70 °C (473-SH2) |
Measuring Ranges: Relative humidity: | 5 ... 100 % |
Measuring Ranges:Temperature |
-20...+80 °C (head mount PRT) -50...+100 °C (cable mount PRT) |
Accuracy: Frost/Dew point | ≤ +/- 0.1 °C (in range -20…70 °C) +/- 0.2 °C (out of range) |
Accuracy: Temperature |
+/- 0,1 °C |
Reproducibility: Frost/Dew Point | +/- 0,1 °C |
Reproducibility: Temperature |
+/- 0,05 °C |
Digital I/O |
RS-232 |
Thermoelectric mirror cooling | 2-stage with typically 50 °C depression at 20 °C ambient |
Gas connections: | 6 mm Swagelok (SH2 only) |
Optional: Internal barometric pressure sensor | 0.1% or 0.01% accuracy, range 700…1200 mbar |
Optional: Analog output |
User programmable, 2x 4…20 mA or 0…10 V |
Power supply: | 100…120 VAC / 200…240 VAC, 50/60 Hz, |
Power consumption: | 100 Watt, autoswitching |
Operating conditions: | 0…40 °C, 90 %rh non-condensing (Instrument); -20…80 °C, 99 %rh non-condensing (Measuring head) |
Weight | 5 kg |
Dimensions: | 265 x 155 x 265 mm |
MBW Callibration Ltd. reserve the right to change design or technical data without notice.
Producer: