9
Normal Operation
1.
Activate the scale by using the Main Power Switch on the rear of the unit to the
“Battery or “I”
position. The scale will run a
self-test procedure to check its load sensors and electronic circuitry. Upon proper completion, scale will settle on zero. Allow
a five-minute warm-up time for stabilization and most accurate results.
2.
The scale can also be turned on from an external power supply through the barrier and turning off the battery switch using
the Main Power Switch.
3.
Most pre-assembled scales come from the factory in a calibrated condition. There is no reason to do an initial calibration on
these scales.
4.
If you are wiring the SAW Load Cell yourself, the indicator may require setup and calibration. Please refer to the sections later
in this manual for calibration instructions, or call Arlyn’s Service Department (800
-645-4301 Ext 101) and we will help you
through it. It is not a difficult or time-consuming process.
5.
Items to be weighed may be placed anywhere on the platform, but if heavy items are to be weighed, it is advisable to place
them near the center. Many models are equipped with shock absorbers and positive overload stops for protection. Still, care
should be taken to avoid putting excessive stress on the SAW Load Cell system, as when heavy weights are dropped on the
platform. It is also important, especially in the case of large capacity platforms, that the platform not be impacted from the
sides while there is a heavy load on the platform.
6.
It is normal for a small amount of zero drift to occur over short periods of time. For the most accurate readings, the scale may
re-acquire a true zero by using the ZERO button just prior to weighing.
Startup Caution
Every time the scale is powered up,
please wait at least 30 seconds
before placing a weight on the scale or pressing any buttons. The
scale has to initialize all its parameters and remember your previous settings and that takes a little bit of time.
Platform Leveling Legs
Platforms will come with leveling legs that lifts the platform from the ground and provide the clearance for the internal load cell
sensors to bend. At shipping, these leveling legs are screwed into the platform tightly (with no clearance) to protect the platform and
the legs during shipping.
POWER MANAGEMENT
The MKE-5-IS Display Indicator can be powered from two different sources
–
internally housed
Rechargeable
Batteries
or
Optional
External Power Supply
(Intrinsically Safe External Supply or Power Supply through an approved barrier).
Battery Operation
–
Charging and Use
The MKE-5-IS Display Indicator is designed to use high capacity, three (3) AA 1.2V rechargeable batteries. The batteries can be changed
by opening the screw-on battery cover on the left side of the indicator, and pulling out the discharged batteries. Newly charged
batteries can then be inserted to power the indicator.
The scale firmware is designed to remember its “last zero” state. This means then since the scale will b
e turned off when changing
batteries, after the scale is powered on again and connected back to the platform, it will not zero out the current weight on the
platform. If this is not desired, then this setting can easily be changed.
Caution
Battery Power Safety Considerations
–
IMPORTANT!
In order for this indicator to be safely operated in a hazardous area, battery care, operation and maintenance must be fully understood
before you start the installation.
The rechargeable batteries used in this indicator have been approved by FM. The use of any other batteries
violates FMs approval. Additional and replacement batteries must be purchased from Arlyn Scales.
