Instruction manual

RFT9739 Field-Mount Transmitter Instruction Manual 81
RFT9739 Specifications
continued
Power supply options
and fuses
85 to 250 VAC, 48 to 62 Hz, 10 watts typical, 15 watts maximum, fused
with IEC 127-3 400mA/250V, time-lag, subminiature. All AC-powered
RFT9739 transmitters comply with low-voltage directive 73/23/EEC per
IEC 1010-1 with Amendment 2.
12 to 30 VDC, 7 watts typical, 14 watts maximum, fused with IEC 127-3
1.6A/125V, time-lag, subminiature. At startup, transmitter power source
must provide a minimum of 1.6 amperes of short-term current at a
minimum of 12 volts at the transmitter's power input terminals.
Environmental limits Ambient temperature limits
Without display
Operating: –22 to 131°F (–30 to 55°C)
Storage: –40 to 176°F (–40 to 80°C)
With optional display
Operating: 14 to 131°F (–10 to 55°C)
Storage: –4 to 158°F (–20 to 70°C)
Humidity limits
Meets SAMA PMC 31.1-1980
Vibration limits
Meets SAMA PMC 31.1-1980, Condition 2
Environmental effects EMI effect
Field-mount RFT9739 transmitters with enhanced EMI immunity meet
the requirements of the EMC directive 89/336/EEC per EN 50081-1
(January 1992) and EN 50082-2 (March 1995) when operated at
nominal rated flow measurement range. Enhanced EMI immunity is
required for transmitters installed in the European Community after
1 January 1996. For specific EMC effects within the EC, the Technical
EMC file may be reviewed at Fisher-Rosemount Veenendaal.
All RFT9739 transmitters meet the requirements of SAMA PMC 33.1
(October 1978), Class 1, A, B, C (0.6% span) at nominal flow rate. All
RFT9739 transmitters meet the recommendations of ANSI/IEEE C62.41
(1991) for surge and EFT.
To meet the above specifications, the transmitter must be installed with
an approved Micro Motion sensor, and the sensor cable must be either
doubly shielded with full contact glands, or installed in continuous, fully
bonded metallic conduit. The transmitter and sensor must be directly
connected to a low-impedance (less than 1 ohm) earth ground.
Transmitter outputs must be run in standard twisted-pair, shielded
instrument wire.
Ambient temperature effect on transmitter
On mA outputs: ±0.005% of span/°C
On temperature output: ±0.01°C/°C
On mA input: ±0.01% of span/°C