Retrotec DM-2A Manual de usuario descargar pdf (Pagina 9)

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©Retrotec Inc. 2012

2 DM-2 Digital Gauge Basics

The DM-2 is Retrotec’s digital micromanometer. It combines simple but comprehensive functionality,

with intuitive controls and setup. The DM-2 is a dual channel digital micromanometer that always

displays a pressure on Channel A, but will display pressure, flow,

velocity, or leakage area on Channel B (depending on the Mode

selected). To ensure accurate results, the DM-2 takes up to four

pressure readings per second on each channel, and updates the

information displayed on the screen every second.

2.1 Batteries

The DM-2 can draw power from an AC power supply through the fan,

directly from the wall outlet, or from four AA batteries. It is

recommended that the gauge be used on battery power when possible.

When battery power is insufficient to power the gauge, the warning

message "Battery Too Low" will appear on the screen.

The DM-2 includes the ability to recharge the batteries inside the gauge. The batteries will not start

charging if the DM-2 is not turned on first (i.e. you must turn on the DM-2 first, and then plug in the AC

power supply to charge the batteries).

To prolong battery life, recharge the batteries only when they reach ¼ power

(displayed on the battery status indicator). Do not operate the DM-2 with the

AC power adapter or the Umbilical power cord attached after they are fully

charged; this will significantly shorten the lifespan of rechargeable batteries. If the DM-2 must be

operated with AC power, remove the batteries to prevent the shortening of the battery lifespan. The

batteries are fully charged when the battery indicator is solid black. Allow the batteries to occasionally

discharge completely to improve battery life.

Install batteries

The DM-2 comes with four AA NiMH rechargeable batteries. The batteries can be charged in the DM-2

with the AC power adapter, or in a compatible battery charger. The batteries should be charged for at

least 8 hours each time. To completely charge the batteries, prior to using the gauge for the first time,

24 hours may be required.

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Retrotec DM-2A Manual de usuario Pagina 9