Description
Throughput, Queues and Why Precision Matters
The cost of screening is rarely the equipment. It is the time each flagged person takes to clear. If an archway tells you only that someone has metal somewhere, every alarm becomes a full wand search. If it tells you the metal is at waist height, the follow up is ten seconds and the queue keeps moving.
That is what you are buying as you move up the s-series. At £2,760 the s9 is the top of the s range before the sX family begins, and it is aimed at sites where the entrance has to keep flowing: a secondary school at 8.40am, a stadium gate, a court building with listed hearings.
One honest caveat. The published data on this page covers the frame and the power supply, not the detection electronics. Ring us for the zone and sensitivity specification before you choose between this and the s6.
Specification
- Net weight 60kg
- Gross weight 77kg
- Shipping two boxes, 81 by 235 by 21cm at 65kg and 25 by 80 by 27cm at 12kg
- Net passage 74 by 68 by 200cm
- External frame 85 by 68 by 220cm
- Operating voltage 70 to 270 VAC, 50 to 60Hz
- Power draw 10W on standby, 20W when alarming
- Ambient temperature minus 20 to plus 70 degrees Celsius
ThruScan s9 Questions, Answered
How much is the ThruScan s9?
£2,760. That is the price for the unit supplied. If you need installation as well, tell us the site and we will quote it separately rather than leaving you to discover it later.
How many people can it process an hour?
Thirty to sixty a minute is the realistic range for an archway, so roughly two to three thousand an hour in good conditions. The limiting factor is almost always how many alarms need a secondary check, not the frame itself.
How do I reduce nuisance alarms?
Set the sensitivity for the threat you actually face rather than the maximum, ask people to place keys and phones in a tray before walking through, and brief staff consistently. Most nuisance alarm problems are process problems.
What tells me where the metal is?
A multi zone archway illuminates the height band where the metal sits, so the wand search is targeted. The number of zones this model resolves is not published here, and it is the figure worth asking us for.
Is the step up from the s6 worth it?
That depends on the zone resolution, and ThruScan do not print it here. Ask us for the data sheet on both before you decide, because spending £310 on a difference nobody has described to you is not a decision, it is a guess.
How many staff do I need on the door?
Two is the usual minimum: one directing people through and one running secondary checks. One person alone means the queue stops every time the archway alarms, which defeats the purpose of buying it.
How should the queue be laid out?
Give people roughly three metres of approach so they can empty pockets before they reach the frame, and leave space the far side for anyone being re checked to step aside. Without that second space the whole line halts behind one person.
Do tray tables actually help?
Enormously. A table before the archway where people put keys, phones and belts cuts the alarm rate dramatically, and alarm rate is what governs your throughput. It is the cheapest improvement available to you.
What happens when someone refuses to be screened?
Your policy needs to say, in advance and in writing, what follows. Usually that is a refusal of entry rather than any form of compulsion. Decide it before opening day rather than at the door with a queue behind.
Should we put up signage?
Yes, clearly and before the queue starts. People accept screening far better when they knew it was coming, and a notice at the entrance does more for compliance than anything the equipment does.
Does it need to be bolted down?
It needs a flat, stable floor and clearance from interference sources such as lift motors and metal frames. We go through siting before you order, because moving an archway after commissioning is the expensive mistake.
How do I stop staff ignoring the alarms?
Set the sensitivity for the threat you face rather than the maximum. If every third person alarms over a belt buckle, people stop reacting within a fortnight and you have bought an expensive doorframe.
Should alarms be logged?
Keeping a note of time and outcome costs little and gives you something to point at when a decision is challenged. It also shows you quickly whether the sensitivity is set sensibly.
Will it find a knife?
A metal blade, yes, and that is the primary design case. A ceramic or plastic blade will not register. Being clear about that in your risk assessment matters more than any line in a brochure.
Do I need wands alongside it?
Yes. Expect two or three from our hand held range for secondary checks. An archway without wands creates a bottleneck at the first alarm.




