Meriam 4150X ATEX I.S. Certified HART Communicator - Manual (Page 16)

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Battery Installation & Removal – all models
The 4150 / 4150X monitors battery condition and displays a “REPLACE BATTERY” notice when the
batteries get low. The unit will function for approximately one (1) hour after the notice is posted on the
display.
To install batteries, remove the 4150 / 4150X from the soft carrying case (if used) and remove the hand strap
retaining screw from rear of unit using a flat screw driver or coin. Remove protective boot and turn the unit
face down on a work surface. Use a flat screw driver to loosen the captive battery door screw and remove the
door. Six (6) AA batteries are required. Install the positive (+) end of each battery first and then press the
negative (-) end into place. Follow the + and – signs that are molded into the battery compartment for proper
polarity. See details below. Replace the battery door and tighten the captive door screw. Replace the boot
and reinstall the hand strap screw.
Note: For general purpose models, replace all six (6) AA batteries at once with all alkaline or all
NiMH cells. Do not mix alkaline or NiMH batteries with each other or with other battery types.
Battery replacement is recommended when the “Replace Batteries” notice is posted on the display;
however, the 4150 / 4150X will function for a time after the notice is posted.
Warning: For Intrinsically Safe model 4150X, replace batteries only in Non-Hazardous Areas.
Use only approved AA alkaline batteries in Intrinsically Safe units. Replace AA alkaline batteries
with approved types only - see the Intrinsic Safety Control Drawing in the Appendix of this
manual for a list of approved AA alkaline batteries.
External Connections
1. Connector for Communication / AC Adapter Dongle
Each unit has an electrical connector located at the top of the handheld. The connector provides fast and
secure connection to the Communication / AC Adapter Dongle supplied with each handheld. Simply line up
the key on the Dongle connector with the white arrow on the MFT’s mating connector and insert. To
disconnect, pull on the light gray connector (attached to Dongle lead – see photo below).
The Dongle is used to connect the AC adapter to the 4150 / 4150X when AC power is desired. The Dongle is
also used to connect the unit to a PC for serial communications. See the “Updating 4150 / 4150X Firmware