Vaisala HUMICAP MMT162 Guia do Utilizador descarregar pdf (Página 53)

Chapter 5 _______________________________________________________________ Maintenance

VAISALA ________________________________________________________________________ 51

Changing the Filter

1. Remove the filter from the probe.

2. Install a new filter on the probe. When using the stainless steel

filter (for oil and fuel cell), take care to tighten the filter properly

(recommended force 130 Ncm).

New filters can be ordered from Vaisala, see section Spare Parts and

Accessories on page 67.

Changing the Sensor

If you need to change the sensor on your MMT162, contact a Vaisala

Service Center. See section Product Returns on page 53.

Error States

MMT162 has the following states that indicate a problem with the probe:

- Analog 4 - 20 mA current output at 0 mA

- Analog voltage output at 0 V

- Serial line outputs asterisk characters (*** **)

The asterisk characters on the serial line may also appear during the start-

up procedure.

You can also check the error message via the serial interface by using the

ERRS command. In case of constant error, please contact Vaisala; see

section Technical Support on page 53.

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Vaisala HUMICAP MMT162 Guia do Utilizador Página 53