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Perfect coordination is called for the moment an emergency call is received by the fire brigade control centre. Regardless of whether a residential building is on fire, dangerous chemicals have escaped or there has been an accident involving a hazardous goods transporter — the fire brigade and rescue service teams are on the scene immediately. All the rescue coordinators now need a clear overview of where they are in the rescue schedule. SINN Spezialuhren provides a mission timer with bezel to time all the key operation times at the turn of a ring: the EZM 7 (Einsatzzeitmesser = Mission Timer).
The Mission Timer EZM 7 with its colour-coded bezel is easy to operate, making it child’s play to set and read off the relevant durations when using breathing protection apparatus —everything from protective suits CSA to LPA. T he captive bezel can even be set when wearing gloves — like on our diver’s watches. We have designed the EZM 7 for use in the most challenging conditions — it is especially resilient to the penetration of water and dust, to scratches, changes in temperature and the influence of magnetic interference. The tegiment case has a surface hardness of 1200 V ickers. A nd the sapphire crystal glass with anti-reflective coating on both sides and luminous indices ensures optimum readability by day or night. Ideal for heavy-duty use by fire brigades or rescue services.
Technical Data Model 857 (EZM 7)
Movement: - Calibre ETA 2893-2 - Self-winding mechanism - 21 jewels - 28,800 semi-oscillations per hour - Shock-resistant as per DIN 8308 - Anti-magnetic as per DIN 8309
Display/Functions: - Hours, minutes, seconds - Second time zone on a 24-hour basis - Date display - Captive misson timer bezelwith minute ratchting rotary in one direction - Watch case stainless steel bead-blasted - Crown screwable - Sapphire crystal on front, antireflective both sides - Screw-fastened case back, nickel-free - Ar-Dehumidifying Technology - Magnetic Field Protection up to 80,000 A/m - Case made with TEGIMENT Technology - Water-resistant as per DIN 8310 - Water-resistant and pressureresistant up to 20 bar (= 200 m underwater depth) - Low-pressure restistant
Measurements: - Case diameter 43 mm - Lug width 22mm
Guarantee: - 02 years
The key operation times at-a-glance
The increasing risks faced by fire brigades in recent years have given rise to enhanced technologies and resulted in stricter regulations. Physiological limits and the times stipulated in the German fire service manuals (Feuerwehr- Dienstvorschriften) FwDV 7 and FwDV 500 issued by the German fire service are used as the basis for the following maximum operation times:
Using CSA (protective suit): 20 min. Using PA (compressed air): 30 min. Using LPA (closed circuit): 60 min.
Checks should be made at 1/3 and 2/3 of the maximum operation time. The thirds are marked by points at 10, 20 and 40 on the bezel.
FwDV 500 states that the following times should not be exceeded for NBC operations: Standard decontamination (Decon level II) must be available for use after 15 minutes.
The schematic representation of the main time phases for breathing protection and NBC rescue operations permits times to be read off at a glance.
More details information Colour-coded bezel for breathing protection and NBC rescue operations We enlisted the services of Chief F ire Inspector Tomás S tanke to help us design the colour-coded bezel and the pictogram on the dial. The scales are based on the traffic light colours green, yellow and red and help to provide a clear overview of the total durations in the first hour of the rescue, the socalled “chaos phase”. They also show colour-coded rescue times for operations involving protection suits, CSA , PA, Dekon II and L PA.
The zero point of the bezel is set to the minute hand (zero position) at the start of the rescue time to be measured. It can now immediately apparent when a team needs to be relieved, e.g. after 20 minutes in a protective suit CSA (green/yellow), after 30 minutes using PA (yellow) and after max. 60 minutes using LPA (red). Clear overview: the control points at 10, 20 and 40 minutes for the thirds checks for PA and L PA operations. In NBC rescue operations, the time when Dekon II is operational can be also be read off the green scale.
The colour-coded bezel of the EZM 7 corresponds to the pictogram on the dial, allowing the wearer to set and read off the key operation times in no time.