User manual
22
Section 2 MC-III™ EXP Flow Analyzer
5.00 (127)
4.94
(125.5)
7.45
(189.3)
6.56
(16.7)
6.95
(17.65)
Figure 2.4—Remote mount on a 2-in. pole using a NuFlo hardware kit (Part No. 9A-30028004)
Hazardous Area Installations (CSA)
The CSA-approved MC-III EXP has been certied as explosion proof for Class I, Division I, Groups B, C,
and D for use in the US and Canada.
Conditions for Safe Use (CSA)
• The device may be used in the presence of ammable gases and vapours with apparatus groups B, C, and
D and with temperature classes T1, T2, T3, T4, T5, and T6.
• The device is certied for use in ambient temperatures in the range -40°C to 70°C and should not be used
outside this range.
• Do not remove the cover unless the area is void of combustible gas and vapors.
• Before removing the pipe plug to install a communications adapter, or disassembling the union nut and
blanking plug in a pre-installed communications adapter, make sure the area is nonhazardous. Reinstall
the pipe plug in accordance with the instructions in this manual.
• All eld wiring must conform to the National Electrical Code, NFPA 70, Article 501-4(b) for installations
within the United States or the Canadian Electric Code for installations within Canada. State and local
wiring ordinances may also apply. All eld wiring must be rated for temperatures of 90°C or higher, and
have a wire range of 22 to 14 AWG. Terminal block screws must be tightened to a minimum torque of 5
to 7 in-lb. to secure the wiring within the terminal block. Only personnel who are experienced with eld
wiring should perform these procedures.
• Do not use Teon
®
tape on threads of the union, reducer, or pipe plugs. Use of Teon
®
tape will void the
explosion-proof rating of the instrument.