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
pressure sensor options to meet the requirements of a wide range of applications.
SH2 Measuring Head
RP2 Measuring Head
The RP2 dew point measuring head has a two-stage Peltier
element in a compact probe format and includes a connection for
temperature measurement. It is supplied as standard with a calibrated
head mounted Pt100 probe and an extension cable to enable optimum
placement in working volumes.
RP2 is suitable for direct insertion into applications with
moving air such as relative humidity generators, climatic chambers,
manufacturing processes and air ducts.
Precise Temperature Measurement
The 473 is supplied with a 4-wire PT100 platinum resistance
thermometer (PRT) for precise temperature measurement and to enable
calculation of relative humidity. The temperature probe supplied can be
connected directly to the measuring head, or by cable to the 473 back
panel. Wider temperature measurement ranges and alternative probe
configurations are available on request.
Integrated Pressure Measurement
The pressure measurement option enables the 473 to
compensate for pressure variations at the point of measurement to
enable the lowest possible measurement uncertainties.
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.
|Measuring Ranges: Frost/Dew Point:||-20…+70 °C (473-RP2)
-30…+70 °C (473-SH2)
|Measuring Ranges: Relative humidity:|| 5 ... 100 %
||-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)
||+/- 0,1 °C|
|Reproducibility: Frost/Dew Point||+/- 0,1 °C
||+/- 0,05 °C|
|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)
|Dimensions:||265 x 155 x 265 mm
MBW Callibration Ltd. reserve the right to change design or technical data without notice.Producer: