Dwyer PMT - Manual (Page 13)

Particulate Monitoring Systems
Installation & Operating Manual
Document No. 210-1015-F Page 7 ©2007
4. Particulate Sensor Installation
The following applies for both one and two piece configurations.
4.1 Location
The following factors should be considered when determining the sensor location:
ƒ Area Classification
ƒ Flow conditions
ƒ Ambient & Process Temperatures
ƒ Process Pressure
ƒ Electrical (Faraday) shielding
ƒ Atmospheric shielding (in the case of ducts and stacks open to atmosphere)
ƒ Access for installation and service
INSTALLATION PERSONNEL
• Only appropriately licensed professionals should install this product.
• For operator safety and to prevent ignition of flammable or combustible
atmospheres always disconnect power before servicing.
• WARNING – Substitution of components may impair suitability for
Division 2 hazardous locations.
SENSOR LOCATION
• Before installing the sensor, confirm area classification requirements. Do
not install any device that is not tagged suitable for the required area
classification. The sensor may be installed in the following areas:
o Class I, Division 2, Groups A, B, C, D
o Class II, Division 2, Groups F, G
o Class III
o Any ordinary location
• Before installing the sensor, confirm ambient temperature requirements. Do
not install any device that is not tagged as suitable for the required
temperatures or pressures. Confirm compatibility of wetted and non-wetted
materials.
• For hazardous areas, a maximum ambient temperature of the particulate
sensor enclosure must not be exceeded. Refer to the Temperature
Considerations section for full details.