Hach-Lange SI792 C, SI792x C, SI792x C-FF, SI792x C-PA User Manual - Manual (Page 17)

15
Section 3 Installation
DANGER
Explosion hazard. Trained personnel only must install or
commission the equipment.
DANGER
Explosion hazard. Never connect items to the transmitter that are
not specified on the control drawing. Do not connect or
disconnect any equipment unless power has been switched off or
the area is known to be non-hazardous.
DANGER
Explosion hazard. The safety of the transmitter may be impaired if
any of the following conditions have occurred:
• visible damage
• storage above 70 °C for prolonged periods
• exposure to severe transport stresses
• previous installation
• failure to operate properly
If any of these conditions have occurred, return the device to the
manufacturer for recertification.
The si792 and si792x transmitters differ in hazard classification. The
si792 transmitter is designed for non-hazardous or Class I, Division 2,
Groups A, B, C, D hazardous locations. The si792x transmitter is
designed for Class I, Division 1, Groups A, B, C, D hazardous locations.
Refer to the control drawing on the Complete Documentation CD or to
the listing appropriate to the site location.
For outdoor installation, install a protective hood or sunshield
(see
Accessories on page 79 ).
Installation of the si792x in an outdoor hazardous location per FM or
CSA control drawings requires a suitable enclosure and must follow
NEC guidelines. Refer to NEMA 250 to determine enclosure needs.