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| Greyline LIT25 Level Indicating Transmitter |
Greyline PSL Pump Station Level Controller
Standard features include : |
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Sensor - PZ32T, PVC and teflon, 32 ft / 10 m range |
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Sensor cable - 25 ft / 7.6 m coaxial |
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Enclosure - watertight, dust tight NEMA4X (IP67) polycarbonate |
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Programming - built-in 2 button keypad |
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Calibration - selectable Level or Range mode |
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Display - large 4-digit LCD |
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Temperature compensation - automatic |
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Output - isolated 4-20mA (1000 ohm) |
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1 signal Relay - 1 amp |
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Power input - 100-130VAC 50/60Hz, 5 watts maximum |
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Electrical surge protection |
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Sensor, AC power and 4-20mA output
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1 Manual - Installation and Operation |
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LEVEL INDICATING TRANSMITTER SPECIFICATIONS |
SCOPE : This specification covers a non-contacting, ultrasonic Level Indicating Transmitter as manufactured by Greyline Instruments Inc., Massena, New York / Long Sault, Ontario. The instrument shall provide for indicating, transmitting and control of the material level in a vessel, or proximity of a target to the Instrument Sensor. |
A. PERFORMANCE SPECIFICATIONS |
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To consist of a non-contacting ultrasonic sensor, connecting cable, and a remote enclosure with indicating, transmitting and controlling electronics.
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Measurement accuracy shall be ±0.25% of Range or 2 mm (0.08"), whichever is greater, and shall be automatically temperature compensated.
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Sensor cable shall be RG62AU coaxial with total length as required for installation, not to exceed 500' (152 m).
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System shall have no moving parts and shall not contact the material being measured. |
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B. NON-CONTACTING SENSOR |
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Sensor shall be constructed of PVC and Teflon.
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The sensor shall have a minimum deadband or blanking of 12" (305mm) and a maximum range of 32 ft. (10 m), and have an operating frequency of 42 kHz with an ultrasonic beam angle of 8ø.
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Sensor shall withstand accidental submersion to 20 psi.
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Sensor operating temperature shall be from -40°F to 150°F (-40°C to 65°C).
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Sensor shall include integral temperature sensor. Temperature sensors requiring separate mounting and wire runs shall not be accepted.
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C. SENSOR CONNECTING CABLE |
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Provide RG62AU coaxial cable 25' (7.6 m) continuous length, with waterproof, potted bond to the Sensor head.
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Extended sensor cable shall be RG62AU coaxial to a maximum of 500' (152 m). Cable shall be spliced with screw terminal connections in manufacturer's recommended steel NEMA4 Junction Box.
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Level and temperature signals shall be conducted on one single coaxial cable. Separate or multiple-conductor cables shall not be accepted.
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Sensor cable shall be installed in grounded metal conduit.
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D. INDICATING TRANSMITTER
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The Indicating Transmitter shall be housed in a wall-mount, watertight NEMA4X (IP66) enclosure with clear, polycarbonate cover. Mounting hardware shall be included. Combined Transmitter/Sensor systems requiring mounting at the top of a tank shall not be accepted. |
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Transmitter shall include a large 4-digit LCD display with 3/4" (19 mm) high digits that shall be visible without opening the enclosure cover. |
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The transmitter shall provide for field-calibration via built-in 2-key calibration system. Systems requiring calibration by BCD switches or external calibrators shall not be accepted. |
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Calibration data shall be permanently stored through power interruptions without requirement of a back-up battery. |
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Field calibration shall allow keypad selection of measurement span, Range or Level operating modes, and display units in Percent, Inches or Centimeters. |
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Transmitter shall permit field programmable damping to smooth output in turbulent level conditions, and programmable rejection time to disregard false signals from agitators, waves and spurious echoes. |
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Transmitter operating temperature shall be from -13°F to 122°F (-25°C to 50°C). |
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Transmitter shall have an isolated 4-20mA output into a 1000 ohm maximum load. Output shall allow field programmable offsets of 4mA and 20mA. |
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Provide one signal relay contact rated 1 amp. Relay shall be programmable for single set point alarm, pump control, and/or echo loss alarm. |
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Transmitter electronics shall be surge protected on AC power input, sensor and 4-20 mA output. |
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Provide a 16-digit alphanumeric display for calibration menu and Relay run time reports plus indication of relay state, units of measurement, calibrated full scale, echo-loss condition and error messages. |
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Transmitter shall be housed in a wall-mount, watertight NEMA4X (IP 66) polycarbonate enclosure with hinged, clear cover. Mounting hardware shall be included. |
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Transmitter power input shall be 120VAC 50/60Hz with power consumption of 5 watts or less. |
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E. ADDITIONAL FEATURES FOR INSERTION IN SPECIFICATION AS REQUIRED |
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Transmitter power input shall be 200-250VAC 50/60Hz with maximum power consumption of 5 watts or less.
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Transmitter power input shall be 24VDC with maximum power consumption of 5 watts or less.
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Have an all-Teflon sensor Model PZ32TE rated for 32' (10 m) maximum range and operation from -40°F to 170°F (-40°C to 76°C).
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Have a PVC and Teflon sensor Model PZ52T rated for measurement range on liquids up to 50 ft. (15.6 m).
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Have a Teflon-faced flange mount sensor model PZ34TxF rated for 32 ft (10 m) measurement range. Specify flange size of 4”, 6” or 8”.
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Include manufacturer's recommended sensor cable Junction Box for extended cable lengths.
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Sensor, connecting cable and junction boxes shall be rated intrinsically safe to Class I,II,III, Div. I,II, Groups C,D,E,F,G.
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F. MANUFACTURER
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The instrument shall be a Model LIT25 Ultrasonic Level Transmitter as manufactured by Greyline Instruments Inc., and warranted against defects in materials and workmanship for one year. |
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