ROTRONIC MBW 473 - Manual (Page 15)

MBW473_MANUAL_E_V2.0 11
Optional Analog Outputs
The 473 can be ordered with two optional analog outputs which are independently configurable. For
each of the analog outputs, you can choose which parameter to track and how to scale the selected
parameter to the analog output range. Please refer to section 4.7
‘Analog Output Connections’ to learn
how to configure the analog outputs.
Internal Barometric Pressure Sensor
As an option you can order an internal barometric pressure sensor to measure ambient pressure. To
measure chamber pressure or to calibrate the sensor, connect a 3 mm Swagelok tube to the pressure
sensor port on the back panel.
Measuring Head Connection
The 473 can be ordered with two different types of measuring heads; the RP2 and the SH2. Both
measuring heads are connected to the back panel of the 473 with the supplied 19-pin measuring head
cable.
External Temperature Probe
The external temperature probe is used to measure the temperature of the environment that is being
tested. To obtain certain humidity parameters, such as %RH, an external temperature measurement is
necessary. External temperature measurements are not required for dew or frost point measurements.

The SH2 is supplied with a Ø2.1 x 100 mm PRT temperature probe. The probe can be con-
nected to the 473 in the following ways:
1. Use the supplied 4-pin 0.5 m cable to connect the probe to the measuring head.
2. Use the supplied 5-pin 3 m cable to connect the probe directly to the back panel of
the instrument.

The RP2 is supplied with a Ø3 x 30 mm PRT temperature probe. The probe can be connected
to the 473 in the following ways:
1. Plug the temperature probe directly into the connector on the top of the RP2
measuring head.
2. Use the supplied 4-pin 0.5 m cable to connect the probe to the measuring head.
3. Use the optional 5-pin 3 m cable (available from the manufacturer) to connect the
probe directly to the back panel of the instrument.