EUTECH INSTRUMENTS ALPHA COND 560 Manuel d'instructions télécharger pdf (Page 29)

NOTE:

This parameter lets you choose the relay function. Select

‘LO’ to activate the relay when the conductivity reading

undershoots the set point (SP1) or select ‘HI’ to activate the

relay when the conductivity reading overshoots the set point

(SP1). SP1 and SP2 can be selected as ‘LO/LO’, ‘LO/HI’,

‘HI/LO’, or ‘HI/HI’.

Setting hysteresis value: The lower display shows ‘HYS’. The upper

display shows the last configured value, otherwise the default value 20

µS. Press ▲ or ▼ key to enter the hysteresis value for set point 1.

Allowable range: 0 to 10% of full-scale of the selected measuring range.

Press ENT key to confirm your hysteresis value.

NOTE:

Hysteresis prevents rapid relay contact switching if the

conductivity reading is fluctuating near the set point. Refer

‘Appendix 2

Graphical Representation of the Function of Hysteresis’.

Setting on-delay time: The lower display shows ‘On.d’. The upper

display shows last configured on-delay value. Press ▲ or ▼ key to

enter the on-delay time for set point 1. Allowable range: 0 to 2000

seconds. When the conductivity reading is reached the set point 1, the

controller delays the relay activation (switch on) by the on-delay time

you set here.

Press ENT key to confirm your on-delay time.

Setting off-delay time: The lower display shows ‘OF.d’. The upper

display shows last configured off-delay value. Press ▲ or ▼ key to

enter the off-delay time for set point 1. Allowable range: 0 to 2000

seconds. When the conductivity reading is reached the set point 1 plus

hysteresis value, the controller delays the relay deactivation (switch off)

by the off-delay time you set here.

Press ENT key to confirm your off-delay time. The controller reverts to

SP1 screen.

Press ▲ or ▼ key to access other setup screens or press ▲ and ▼ key

simultaneously (escape) to return to measurement mode.

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EUTECH INSTRUMENTS ALPHA COND 560 Manuel d'instructions Page 29