Mettler Toledo M300 ISM Manual de usuario descargar pdf (Pagina 13)

METTLER TOLEDO US and Canada

www.mt.com / Thornton

Water Quality

Pure Light

Simple Water Quality Indication

656 Pure Light™

Water Quality Indicator with Timer

The Pure Light™ is a go/no-go indicator for the quality of pure water from purifi-

cation systems including service deionization, reverse osmosis, and distillation.

Under normal conditions, the green light is illuminated, indicating that the water is

in the acceptable purity range. When the purity falls below the user selected set

point, the indicator light switches from green to red. The user can activate the time

function to also alarm based on time and prevent organic or biological fouling of

the system. This easy to interpret, go/no-go, signal alerts the user to take appropri-

ate action.

Features/Benefits:

- Low voltage operation - the indicator operates on 6 VAC.

- Five ranges, user-selectable - jumper permits the user to select the acceptable

purity level threshold to meet the application. Threshold limit can be re-set as

needed to one of the following five settings.

Restivity Conductivity

50 kΩ-cm 20 μS/cm

200 kΩ-cm 5 μS/cm

500 kΩ-cm 2 μS/cm

1 MΩ-cm 1 μS/cm

2 MΩ-cm 0.05 MΩ-cm

- BioFouling timer - includes selectable timer that indicates the elapse of 90 or 180

days since the last servicing.

- Dual mounting threads - supplied with two mounting threads 1/2" NPT and 9/16"

- 12 for convenience and reduced inventory.

- Multiple lights, one transformer - up to three Pure Lights can be operated from

one 120V transformer which has screw terminals. Only one electrical outlet is

required to monitor multiple points. Each light for 120V is supplied with a 10 ft

(3 m) connecting wire.

- Red & green LED's - for reliability, two bright Light Emitting Diodes (LED's) are

used to indicate above or below threshold status, representing the need for regen-

eration or replacement of ion exchange resin.

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Mettler Toledo M300 ISM Manual de usuario Pagina 13