Safeline STANDARD SERIES, Instruction Manual

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tm2[G] TIMER – NON GATED MODE
The tm2[G] timer used in the non-gated mode is an ideal
delayed reject timer for use with loose product where the
reject device is a reasonable distance from the detector
head. It can also be used with individual products where
precise reject operation is not crucial. When setting up
the timer there are some basic rules that must be applied.
Sample Size
Small size metal contaminants should be used to set the
timer, the use of large contaminants will produce errors in
the settings. Try to use the smallest metal sample that
can be detected. If this is not possible use the smallest
sample available and adjust the sensitivity so that the
sample gives an indication at 2 to 3 red bars on the bar
graph display.
Product Presentation
Sample product or packs used to set up the timer should
be passed through the detector at their normal speed
without skewing or slippage.
Product Length
Where a variety of individual products with differing
lengths are being inspected ensure that for a particular
timer setting the variation in pack length does not exceed
+/-
25% of the pack length used to set up the timer.
Three different timer settings are available, ie A, B, and C
to accommodate variations in pack length.
Delay Time
Delay time is the time taken for a metal contaminant to
travel from the metal detector to the reject device.
Reject Time
Reject time is the time required by the reject
device to reject contaminated product. The mini- mum
value will be the operate time of the reject device.
Setting Up Timer Type tm2(G)
To set up the timer use the following procedure:
1) If inspecting individual products prepare a sample
pack containing a small metal contaminant
positioned at the rear/trailing edge.
2) Enter the Engineers access code.
3) if inspecting individual products pass the sample
pack containing the small metal contamination
through the detector and adjust the sensitivity so that
the bar graph indicates 2 to 3 red bars.
If product is loose place metal sample on belt and adjust
sensitivity in a similar manner.
4) Press ’Etc’ soft key, the display reads: Select timer A
/B/ C
5) Select timer A, 8 or C display now reads:
Timer ’x’ Update Yes / No
Note:- ’x’represents the selected timer A, B or C
6) Select ’Yes’ display now reads: Timer type tm1 /
tm2(G) / tm3(G)
7) Select ’tm2(G)’, it previously set to gated mode
display will read
Gated Timer Still Required Yes / No
if not set previously to gated mode, display will be as
shown in 8)