GTE KMG-LITE User manual

KMG-Lite
Closing force meter for
power-operated doors and gates
User manual

At a glance
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3 x AA 1.5V battery

Contents
1. General notes 3
2. Safety advice 5
3. Intended purpose 7
4. Product description 8
5. Commissioning 10
6. Measuring 13
7. Warning- and error signals 20
8. Care and maintenance 24
9. Calibration 27
10. Accessories 29
11. Specifications 30

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1. General notes
This chapter provides important advice on using this
documentation.
The documentation contains information that must be applied if
the product is to be used safely and efficiently.
Please read this documentation carefully and familiarise yourself
with the operation of the product before putting it to use. Keep
this documentation to hand so that you can refer to it when
necessary.

Identification
Darstellung Bedeutung Bemerkungen
Note Offers helpful tips and information
Objective Denotes the objective that is to be achieved
via the steps described
Step Carry out steps
Cross-
reference
Refers to more extensive or detailed
information
Display Shows the display output
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2. Safety advice
This chapter gives general rules which must be followed and
observed if the product is to be handled safely.
Product safety/ preserving warranty claims
Operate the instrument only within the parameters specified
in the Technical data. (
 S. 30)
Always use the instrument properly and for its intended
purpose. Do not use force.
Do not open the instrument except for changing the batteries
as instructed in chapters 5and 8.
The instrument must be sent to annual calibration. (
 S. 27)

When not used, keep the gauge inside its transport case und
protect it from humidity and mechanical stress.
Ensure correct disposal
Take used batteries to the collection points provided for
them.
At the end of its useful life send the product back to GTE.
We will take care of its proper and ecological disposal.
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3. Intended purpose
This chapter gives the areas of application for which the product is
intended.
Only use the product for those applications which it was
designed for.
KMG-Lite is a compact handheld measurement instrument for
determining dynamic closing forces of power-operated doors
and gates.
Please consult specifications for the admissible maximum force. (  S. 30)

4. Product description
This chapter describes the structure of the product and its display
and control elements. Point of force application
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Display
Control button
Battery plug

9
Numeric measurement result
Indicator FEnd ≥80
N
Indicator FEnd ≥25
N
Indicator tdyn

5. Commissioning
This chapter describes the steps required to commission the product.
Removing the protective film on the display:
Pull the protective film off carefully.
Inserting batteries:
Remove battery plug at the end of the handle
by twisting it counter clockwise and
pulling it out.
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Insert three AA - type batteries with 1.5V each.
Mind the polarity!
Close battery plug: Press the batteries with the battery
plug against the spring resistance inside the handle and
lock it by twisting it clockwise.
+
-
Battery positive terminal ahead!
3 x AA 1.5V battery
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Activate the instrument:
Press the control button once.
While starting up the devices tests itself.
Startup test
The instrument is ready after three seconds.
Ready for measurement
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6. Measuring
This chapter describes the steps required to measure with the product.
Activate the instrument:
Press the control button once.
Wait for measure attendance.
Apply the force vertically and axial
Measuring automatically starts at 20 N.
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Within five seconds from of the 20N - trigger the force signal
is evaluated according to EN12453 and DIN18650.
Measurement/ Evaluation
Display of measurement results:
After the measurement and evaluation are finished, the
instrument automatically displays the dynamic peak force
Fdyn that has occurred within measurement. The
measurement unit for this value is Newton (N).
Measurement result:
Fdyn = 326 N
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If the dynamic time (tdyn) exceeded the normative 0.75
seconds, the LED within the second display segment flashes.
Measurement result:
Fdyn = 326 N
tdyn > 0,75 s
If the force value at the end of the 5s measurement period (FEnd)
exceeded 25 N, the LED within the third display segment
flashes.
Measurement result:
Fdyn = 326 N
FEnd > 25 N
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If the force value at the end of the 5s measurement period (FEnd)
exceeded 80 N, the LED within the third display segment
flashes.
Measurement result:
Fdyn = 326 N
FEnd > 80 N
If the force value at the end of the 5s measurement period (FEnd)
exceeded 25N and the dynamic time (tdyn) exceeded 0.75 s, the
LEDs within the second and the third display segment flash.
Measurement result:
Fdyn = 326 N
tdyn > 0,75 s
FEnd > 25 N
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If the force value at the end of the 5s measurement period (FEnd)
exceeded 80N and the dynamic time (tdyn) exceeded 0.75 s, the
LEDs within the second, third and fourth display segment flash.
Measurement result:
Fdyn = 326 N
tdyn > 0,75 s
FEnd > 80 N
Display of the value tdyn :
After measurement press the control button once.
The display shows the value for the dynamic time in Milli-
seconds (ms).
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The LED within the second display segment is lit for orientation.
tdyn = 740 ms = 0,74 s

Display of the value FEnd :
After measurement press the control button twice.
Das Display zeigt nun den Wert der Endkraft in Newton (N).
FEnd = 0 N
The LED within the second display segment is lit for
orientation.
By pressing the control button again, the display returns to
the dynamic peak force with the flashing segments for
indication of tdyn and FEnd standard violation.
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Regardless of the current display state the instrument is
always ready to start a new measurement whenever
the required trigger force > 20 N is detected.
Deactivatethe instrument:
Keep the control button pressed for more than 2 seconds.
After 5 minutes of inactivity the device automatically turns
itself off.
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