Cameron Scanner 2000 microEFM, Hardware User Manual

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Scanner
®
2000 microEFM Section 2
Class I, Div. 2 (CSA) Installations
The Scanner 2000 is certified for Class I, Division 2, Groups B, C and D hazardous locations.
Wiring Precautions
CAUTION All field 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. Local wiring ordinances may also apply. All field 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-lbs. to secure the wiring
within the terminal block. Only personnel who are experienced with field wiring should
perform these procedures.
RTD Assembly Options (for Gas and Liquid Flow Runs Only)
The process temperature input is typically supplied by an RTD installed in a thermowell downstream of the
primary differential pressure source. The location of the thermowell should conform to the relative standard to
ensure accurate measurement. A 2-wire, 3-wire, or 4-wire RTD assembly may be used. A weatherproof RTD
fitted with a weatherproof Type 4 strain relief is recommended for Div. 2 installations.
Pressure Safety Precautions
!
WARNING: Before connecting the Scanner 2000 microEFM to a flow line, consider the
pressure rating of the sensor, and the presence of harmful gases. The tubing and fixtures used
to connect the sensor to the manifold in the flow line must be manufactured from materials that
are appropriate for the pressure ratings of the sensor used. If H2S is present, use a NACE sen-
sor and take appropriate precautions to avoid exposure to this hazardous gas.
Table 2.1—MVT Pressure Limits, Approvals and Bolt Specifications
SP/SWP
(PSIA)
DP
(IN H2O)
Max.
Overrange
(PSIA)
Measurement
Canada
Approved
ASME
Pressure
Vessel Code
Compliant
CSA
Single Seal
Approved
Standard
Bolts
NACE Bolts
100 30 150 X X X B7 or 316 SS B7M
300 200 450 X X X B7 or 316 SS B7M
840
500 200 750 X X X B7 or 316 SS B7M
1500 200 2250 X X X B7 or 316 SS B7M
300
400
840
3000 200 4500 X X B7 or 17-4 SS Inconel
300
400
840
5300 200 7420 B7 Inconel
300
400
840