Instructions

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METRACELL BT PRO GMC-I Messtechnik GmbH
Operating time is approximately 10 hours when the batteries are fully charged. A warning is
generated when battery voltage drops to below 4.8 V. The battery tester can be operated for
approximately one more hour after this warning is generated.
4.2 Attach the Carrying Strap (optional)
The battery tester indicates readiness for operation and successful acquisition of measured
values by means of an acoustic signal for all measurements and repeat measurements. And
thus there’s no need to observe the displays which appear at the front panel for the purpose
of visual confirmation when recording measured values.
In order to ensure freedom of movement for the operator, the battery tester can be secured
by means of various retaining devices for the entire duration of measurement:
• Carrying strap:
The operator can use the carrying strap to suspend the battery tester around his neck.
• Retaining clip:
The operator can attach the battery tester to his belt with the help of the retaining clip.
• Retaining magnet: The battery tester can be attached to magnetic surfaces such as cab-
inet doors with the retaining magnet.
In particular for large UPS systems laid out in multiple rows, this convenience makes work
significantly faster and easier.
The carrying strap is shipped loose and must first be inserted:
1. Pull one end of the strap out of the locking clasp. The locking clasp remains on the strap.
2. Feed the end of the strap through the eyelets on the instrument: Push the strap into one
of the eyelets at the bottom of the instrument until it comes out at the side of the instru-
ment. The top side of the retaining clasp faces out.
3. Thread the end of the strap from above through the locking clasp on the strap.
4. Repeat steps 1 through 3 with the other end of the strap on the other side of the instru-
ment.
5. Adjust the length of the carrying strap by pulling on its ends.
 The carrying strap has now been attached.
4.3 Switching the Instrument On/Off
Switching the Instrument On
1. Press and hold the Function key for approximately 2 seconds.
The initial display appears with the instrument’s designation and version, as well as date
and time.
2. Press any key.
 The main menu appears at the display. The instrument can now be used.
Switching the Instrument Off
Normally the instrument is switched off manually. If the battery tester has not been used for
more than 10 minutes, it’s switched off automatically.
1. Select  SWITCH OFF in the main menu with the help of the ▼ key.
2. Press the OK key.
 The display goes blank. The instrument has been switched off.