Fluid Components Intl ST51A - Page 12

GENERAL ST51A/ST75A/ST75AV Mass Flow Meters
4 Fluid Components International LLC
Flow Transmitter
■ Enclosure
Rating: NEMA 4X [IP67]
Material: Standard – Aluminum, polyester powder-coated
Optional – 316 stainless steel
Cable/Wiring port: Dual ½" female NPT or M20x1.5
■ Operating Temperature
0 °F to 140 °F [-18 °C to 60 °C]
■ Maximum Relative Humidity
100%
■ Maximum Altitude
12,000 feet (3,658 meters)
■ Input Power
DC: 18 VDC to 36 VDC
AC: 90 VAC to 264 VAC (4.5 Watts max.; CE Mark voltage 100
VAC to 240 VAC)
Instrument (Element + Sensor): 4.5 Watts
Sensor only: 0.30 Watts
■ Analog Output Signals
Two 4-20 mA outputs configured for flow rate or temperature.
Typical load: 250 Ω; Max load: 500 Ω. Both outputs have fault
indication per NAMUR NE43 guidelines, user selectable for high
(> 21.0 mA) or low (< 3.6 mA).
■ Source/Sink Outputs
One source output and one sink output provides totalized flow
(pulse signal) or alarm setpoint (level signal). Pulse width at 50%
duty cycle. 1-500 Hz pulse output for total flow.
• Source: 22 ±2 VDC, 25 mA
• Sink: External (user) power source and load not to exceed 40
VDC and 150 mA
■ Communication Port
• RS-232C, standard
• Modbus, standard
• HART, standard
■ Digital Display
1
Two-line x 16 character LCD; displays measured value and
engineering units. Top line assigned to flow rate, second line user
assignable to temperature reading, flow totalizer or alternating. Display
can be rotated in 90° increments for optimum viewing orientation.
1
Display “delete” option (Blind, no display window) also available.
■ Input Power Fuse
Part No.
Type
Amp
Code
Ampere
Rating
Max. Voltage
Rating
Littelfuse Series
454: 045401.5
Slo-Blo
01.5
1.50 A
125 V
Refer to Power Fuse Replacement on page 20 for fuse
replacement instructions.
■ Installation and Mounting
ST51A – Integral with sensor element or remote mountable with
interconnecting cable length of: 10′ [3 m), 25′ [7,6 m], 50′ [15 m],
100' [30 m] or custom length.
ST75A/ST75AV – In-line “T”, NPT or tube. Available in remote
mountable configuration with interconnecting cable length of: 10′
[3 m], 25′ [7,6 m], 50′ [15 m], 100' [30 m] or custom length.