Pressure Gauge/Switch contains CSA-listed assemblies.
Press Release Summary:

Original Press Release:
New Compact Explosion-Proof, Differential Pressure Gauge & Switch
When your system requires explosion-proof gauges and switches, you will find the new, CSA Certified, Model 220 from Mid-West Instrument is a breakthrough design for explosion-proof applications. If you normally use large, heavy housings for your explosion- proof gauges and switches, you are going to be surprised at this new, lightweight design. The entire gauge/switch is available with pressure containing elements in aluminum or 316 stainless steel. Differential pressure range from 0-5 PSID to 0-100 PSID with safe working pressure up to 4000 PSID. A variety of elastomers are also available so a configuration is possible for almost any media. Available in one or two switch or relay configurations and a variety of switch and relay options. A Five Year Warranty is standard at no extra cost.
The 220 is:
* Totally Certified, Explosion Proof Enclosure
* CSA Listed Assemblies
* Class I, Div. l, Groups C & D
* Class II, Div. I, E, F &G
* Easy To Hook-up
* More Cost Effective
* Compact & Lightweight