Crystal nVision Lab Reference - Manual (Page 39)

Power  37
nVision Operation Manual
Extending Battery Life and Low Power Modes
Note that the nVision reference recorder has many customizable battery saving features available to you for optimization in CrystalControl.
 Low Power Mode
You may extend battery life substantially by slowing down your Logging Interval (recording rate), reducing the Automatic Shutoff and Backlight Shutoff times,
or reducing the number of screens enabled.
 Ultra Low Power Mode
During a recording with a Logging Interval of 1 reading/minute or slower, your nVision will enter Ultra-Low Power Mode after the first reading elapses AND
the Automatic Shutoff Timer runs out. The battery conservation measures used in Ultra-Low Power Mode allow the nVision to enter a deep-sleep condition
between data readings
Note: The Backlight Shutoff is set separately in CrystalControl. It is unaffected by the Automatic Shutoff Timer , Low Power Mode , or Ultra Low Power Mode .
Battery Replacement
The nVision uses four AA batteries. Unscrew the four captive screws (knurled Phillips head) to gain access to the battery compartment. Replace the batteries
taking care to note polarity for their proper installation. After replacing the batteries and reinstalling the power module, the nVision will start operating im-
mediately (without having to press the button). This indicates that a complete reset has occurred, and is normal. Verify the battery module is properly sealed
and installed to maintain your IP67 rating. Failure to properly seal the battery compartment may allow water damage that could permanently compromise the
nVision. IP67 rating will be void if nVision is operated without 4AA power module in place.
!
WARNING: Do not remove or change the batteries in a hazardous atmosphere.
Battery Power Module (4AA) Specification
Batteries . . . . . . . . . . . . . . . . . . . . . . . . . Four (4) size AA (LR6) batteries.
!
WARNING: Do not remove or change the batteries in a hazardous atmosphere.
 The nVision is Intrinsically Safe only if powered by one of the following battery types:
Approved Battery Type Ta= Marking
Rayovac Max Plus 815 -20 to 50° C
Ex ia IIB T4 Ga
Duracell MN1500 -20 to 45° C
Energizer E91, EN91 *
-20 to 50° C Ex ia IIB T3 Ga
Duracell MN1500
Replace batteries with approved type in non-hazardous locations only
* Energizer is manufactured by Energizer Holdings, Inc., and the Eveready Battery Company, Inc.
Many other battery types and models have been tested but failed to meet the requirements for Intrinsic Safety—do not assume other models are equivalent.
The nVision can be operated and powered from the mini-USB serial interface.
!
WARNING: Do not use the mini-USB serial interface in a hazardous atmosphere.