Chemical-Resistant Camera Choices?

We have an interesting situation where we need to deploy cameras in a harsh food processing environment where chlorine is often sprayed around (and sometimes at) the prospective camera location.

We'd like your opinion about the least expensive solution to this challenging placement.

We have found three acceptable (we think) choices, from least to most expensive:

1) Axis Q1765-LE bullet & T98A17-VE back box -- Meets NEMA type 4X and IP66 standards); MSRP $1,668.

2) Any box camera inside a Moog SSH10C2Y Fusion Stainless Steel Tubular Housing -- Meets NEMA type 6P and IP67 standards; MSRP $1,661 (not including the camera cost).

3) Any box camera inside a Moog SSDP75CN Fusion Stainless Steel Dome -- Meets NEMA type 4X/6 and IP67 standards (pressurization is an option); MSRP $1,894 (not including the camera cost).

Side question: Do you think pressurization is worth the added hassle?

Thanks!

Definitions:

IP66:

Protected from high pressure water jets from any direction.

IP67:

Protected from immersion between 15 centimeters and 1 meter in depth.

NEMA 4X:

Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, splashing water, and hose directed water); that provides an additional level of protection against corrosion; and that will be undamaged by the external formation of ice on the enclosure.

NEMA 6P (differences from NEMA 4X are underlined):

Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (hose directed water and the entry of water during prolonged submersion at a limited depth); that provides an additional level of protection against corrosion and that will be undamaged by the external formation of ice on the enclosure.
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