Cable Entries
Cable glands shall be flameproof certified (‘d’ or ‘db’) for use in explosive
atmospheres. Ingress Protection will be greater or equal to IP66. Cable glands will
be mounted according to IEC/EN 60079-14 standard, edition in force, and to
additional requirements from local standards. They shall be of M20x1.5 or ¾ NPT
type. In the case of an ISO thread (M20), the engagement shall be 5 threads at
least. Cables used shall have an operating temperature range equal or greater
than 80 °C.
Threaded joints
Explosion-proof seals have values different from those specified in the tables of
standard EN 60079-1. Oldham Simtronics does not allow repairs and disclaims
any responsibility for material modifications.
The threaded joints on the OLC(T) 100 may be lubricated to maintain fire-proof
protection. Only non-hardening lubricants or non-corrosive agents having no
volatile solvents may be used. Warning: silicone based lubricants are strictly
forbidden, since they contaminate the OLC(T) 100 detector elements.
Electrostatic Hazard
Accessories in plastic material (see Chapter 7) may present a risk of static
discharge. Do not rub with a dry cloth. Clean with water and wipe only with a
damp cloth.
Metrological performance for the detection of
flammable gases
Standard VQ1 OLC/OLCT 100 filament version detectors conform to IEC / EN
60079-29-1 standards, Suitability requirements for the operation of flammable gas
detectors, category 0 to 100% LEL Group II, reference gas 0-100% LEL Methane
and Propane.
These detectors are classed as safety devices according to ATEX 2014/34/UE
Directive and may, therefore, contribute to limiting the risks of explosion. For this
to be so, they must be connected to Oldham Simtronics type MX 15, MX 32, MX
42A, MX 48, MX 43, MX 52 or MX 62 detection controllers, or connected to
measuring systems that are certified according to IEC / EN standards 60079-29-1
and compatible with their characteristics (see transfer curve).
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