Vaisala HUMICAP HMT310 Guia do Utilizador descarregar pdf (Página 73)

Chapter 6 ___________________________________________________ Calibration and Adjustment

VAISALA ________________________________________________________________________ 73

Multipoint Relative Humidity Adjustment

Syntax: MPC [quantity] [function]<cr>

where

quantity

Quantity to be adjusted. The only available quantity is

RH.

function

Desired function. The options are:

– Enable multipoint correction.

OFF

– Disable multipoint correction.

LIST

– Show correction table.

INIT

– Start entering values in correction table.

CLEAR

– Remove all values from correction

table and

disable multipoint correction.

Multipoint calibration (applicable from software version 2.0.1 onward)

can be used to optimize RH measurement in a narrow range of

measurement by using 3-8 adjustment points. For more information and

an example multipoint calibration, see section Multipoint Adjustment

Using Serial Line on page 78.

Relative Humidity Calibration and Adjustment

(in Two Points)

Use two reference humidities over the measurement range. The

references need to have a difference of at least 50 %RH.

Before calibration HMT310 needs to be set to adjustment mode by

pressing the adjustment button once, see Figure 18 on page 74. To return

to normal operation mode, use the RESET command: see Reset

Transmitter on page 53.

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Vaisala HUMICAP HMT310 Guia do Utilizador Página 73