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Summary of Contents for Seametrics TX81
- Page 1 TX80-Series FLOW SENSOR INSTRUCTIONS •TX81 •TX82 9 0 0 1 : 2 0 0 8 CERTIFIED COMPANY...
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Page 2: Table Of Contents
TABLE OF CONTENTS General Information Specifications, Features ............................Page 1 Installation Distorted Flows, Fitting Installation, Meter Installation, Positioning the Meter ..........Page 2 Straight Pipe Recommendations .........................Page 3 Full Pipe Recommendations ..........................Page 4 Electrical Connections FT415/FT420, Connecting to PLC's ........................Page 5 Operation Modularity, Output, Fittings, Minimum Flow, Flow Range Table, Calibration (“K-Factor”) ............................Page 6 Maintenance... -
Page 3: General Information Specifications, Features
6-30 Vdc @ 8 mA (Micropower option: 3.5-16 Vdc @ 0.3 mA max) Cable 22 AWG, 3 Con, 18’; 2000’ max run *Specifications subject to change. Please consult our website for the most current data (www.seametrics.com). **High pressure option requires an appropriate fitting. FEATURES... -
Page 4: Installation
INSTALLATION DISTORTED FLOWS tings (size 3” and above) require a hole to be cut in the pipe. The recommended hole size is 1-3/4”. Faster flow causes Meter Installation. After the meter fitting is installed in the meter to read high Distorted flow pipeline, the meter can be installed in the fitting. -
Page 5: Straight Pipe Recommendations
INSTALLATION STRAIGHT PIPE RECOMMENDATIONS (X = diameter) Reduced Pipe Two Elbows In Plane Two Elbows, Out Of Plane Expanded Pipe Spiral Flow Propeller Meter Swirling Flow Partially Open Butterfly Valve Page 3... -
Page 6: Full Pipe Recommendations
INSTALLATION FULL PIPE RECOMMENDATIONS Better Installation: Ensures full pipe Possible Problem: Allows air pockets to form at sensor Possible Problem: Better Installation: Post-valve cavitation can create air pocket Keeps pipe full at sensor Possible Problem: Better Installation: Air can be trapped Allows air to bleed off Caution: These flow sensors are not recommended for installation down- stream of the boiler feedwater pump where installation fault may expose the... -
Page 7: Electrical Connections Ft415/Ft420, Connecting To Plc's
CONNECTIONS DIAGRAMS FT415 Standard Connections Electronic Metering Pump Battery Type: Lithium "C, 3V, replaceable Caution: Do not apply external power to the FT415. Current sinking polarity-sensitive Pulse Responsive Metering Pump White Black (Passes flow sensor pulse on to another control without scaling) Micropower Sensor Only Connections for FT420/3-Wire Mechanical Meter... -
Page 8: Modularity, Output, Fittings, Minimum Flow, Flow Range Table, Calibration ("K-Factor")
(part number cation. The TX81 is sized for fittings of 1 1/2” to 3”. The TX82 MK10). Alternatively, the flow sensor and indicator or transmit- is for fittings of 4”... -
Page 9: Rotor Replacement, Signal Troubleshooting, Sensor Replacement
MAINTENANCE Signal Troubleshooting. The flow sensor has only one moving Caution: Never remove the u-clip retainer part, the rotor. If this is turning properly and there is no signal, when the pipe is under pressure. Always the magnetic sensor is not operating properly. To check the remove pressure from the pipe before at- signal, apply 12 Vdc regulated* power to the red (+) and black tempting to remove the meter. -
Page 10: Parts Explosion Parts List
PARTS EXPLOSION TX80-SERIES PARTS LISTING 26181 Upper Housing 26211 Gasket 29930 Lower Housing 26229 Housing Screw 26073 Plug, Steel 26079 Plug, Plastic 07655 Strain Relief 25321 Sensor Retaining Screw Pick Up, Standard Low Power 26310 29953 Pick Up, Micro Power (FT415/DL76) O-Ring, EPDM 25081... -
Page 11: Troubleshooting Problem, Probable Cause
TROUBLESHOOTING Problem Probable Cause Try... No signal after installation Reduce pipe size if possible, use dif- Insufficient flow ferent type of sensor Bad connections to control Reconnect if necessary electronics Incompatible control Use different power supply Add pull up resistor, (See pg. 5) Damaged or missing rotor Obtain new rotor and replace (See pg. - Page 12 S eame tric s In co rporat ed • 1 9 0 2 6 72n d A v enue South • K en t , W ash i n g ton 9 80 32 • USA ( P) 2 5 3 .8 72 . 02 8 4 • ( F) 2 5 3 . 8 7 2. 0285 • 1 .8 00 . 97 5. 81 53 • w w w. s eam et ri cs . c om LT-65200048-100211 10/2/11...
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