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Dimensions and Specifications
Table A-16
FM transmitter hazardous area classifications
Approvals agency
(1)
CSA
(2)
ATEX
(1) CSA is a Canadian approvals agency that provides approvals accepted both in the U.S.A. and in Canada.
(2) ATEX is a European directive.
A.3.3
LF-Series DIN transmitters
Table A-17
DIN transmitter physical specifications
Housing
Weight
Mounting and cabling
Status LED
Zero button
Table A-18
DIN transmitter electrical connections
Input and output connections
Power connections
Sensor connection
76
Classification
Class I Division 2 Groups A, B, C, D
Class II Division 2 Groups F and G
Class III Division 2
With display:
II 3 G EEx nC [L] IIB+H2 T6
II 3 D IP66/IP67 T65°C
Without display or with optional display cover:
II 3 G EEx nC [L] IIC T6
II 3 D IP66/IP67 T65°C
Polyamide PA 6.6
0.52 lbs (0,24 kg)
DIN rail transmitters are mounted on a 35 mm rail. The rail must be grounded.
Transmitters include a mounting bracket and 6.5 ft (2 m) of 4-wire twisted-pair
shielded signal cable. Additional lengths up to 1000 ft (300 m) can be purchased.
Three-color LED status light on face of transmitter indicates flowmeter condition at
a glance, using a solid green, yellow or red light. Zero in progress is indicated by a
flashing yellow light.
A zero button on the face of the transmitter can be used to start the transmitter zero
process.
Three pairs of wiring terminals for transmitter outputs
One pair of terminals for digital communications (Modbus/RS-485)
Plug connectors accept stranded or solid conductors, 24 to 12 AWG
2
(0,2 to 3,5 mm
)
Two pairs of terminals
• Either pair accepts DC power
• The remaining pair is used for making a jumper connection to a second
transmitter
Plug connectors accept stranded or solid conductors, 24 to 12 AWG
2
(0,2 to 3,5 mm
)
The transmitter has two pairs for the 4-wire connection to the sensor
• One pair is used for the RS-485 connection to the sensor
• One pair is used to supply power to the sensor
Plug connectors accept stranded or solid conductors, 24 to 12 AWG
2
(0,2 to 3,5 mm
)
LF-Series Flowmeters: Sensor/Transmitter Installation
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