Related Manuals for Aichi Tokei Denki ATZTA UW 80
Summary of Contents for Aichi Tokei Denki ATZTA UW 80
- Page 1 250205 Ultrasonic Flow Meter for Fuel Gas Management ATZTA UW (80A, 100A, 150A) Instruction Manual...
- Page 2 Introduction Thank you very much for purchasing the Ultrasonic Flow Meter UW Series for Management of Fuel Gas this time. Please be sure to read this Instruction Manual to use this product correctly and safely and to prevent accident. Please arrange for operators who actually use this product to know the context of this Instruction Manual surely.
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Page 3: Safety Concerns
Safety concerns To ensure the safe use of this product and to prevent an accident or an unexpected situation, instructions to which attention must be paid are indicated with the following symbols. Structure of warning indications Incorrect handling by ignoring to follow instructions of this symbol may lead to imminent danger of death or serious injury. -
Page 4: Precautions For Use
Precautions for use Do not use for applications that require safety, such as nuclear, railroad, aircraft, vehicle, playground equipment, etc. Do not modify the product. Do not use the product for foods, drinks, medical purposes, etc., because it is not designed for sanitary specifications. Danger Do not use the product in the atmosphere of an inflammable gas, etc., because it is not designed for explosion-proof specifications. - Page 5 Working environment and applicable fluid 11. When installing the flow meter near a governor, etc., install it upstream; installing it downstream is not recommended. (An incorrect flow-rate measurement may occur due to an effect of the governor, etc.) 12. After the subject fluid for measurement is set, turn on the power while no fluid flows (0 m /h).
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Page 6: Piping
Piping Do not climb on this product or use it as a foothold. Do not carry and/or install this product as holding its display section. Warning When you install the flow meter, be sure to turn off its power. After the flow meter is installed, set the subject fluid for measurement and turn on the power while no fluid flows (0 m /h). - Page 7 Wiring When performing wiring work, follow the instructions in this Instruction Manual. Use the product within the rating. Danger Do not use the product on a voltage exceeding permissible load. Do not place the product’s external connection cable together with or near to power supply line(s) or power line(s), etc.
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Page 8: Disassembling And Inspection
Disassembling and inspection Do not disassemble this product. When fluid flow is normal, the pilot lamp will blink. If it does not blink, Caution please contact your nearest branch or sales office. Disposal This product contains a lithium battery, and therefore be sure not to dispose of it in the general disposal route. -
Page 9: Table Of Contents
Ultrasonic Flow Meter for Fuel Gas Management UW Series Instruction Manual Table of Contents Introduction ........................... 1 Confirmation of package contents ..................1 Safety concerns ........................2 Structure of warning indications ..................2 Precautions for use ......................3 Working environment and applicable fluid ................. 3 Cautions for operations ..................... - Page 10 5. Alarm Display ........................24 5-1. Abnormal flow rate measurement ................24 5-2. Battery replacement alarm [Internal Battery Type] ........... 25 5-3. Abnormal temperature value ..................26 5-4. Abnormal pressure value (Type with pressure sensor) ..........26 5-5. External memory abnormality .................. 27 5-6.
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Page 11: Introduction
1. Overview 1-1. Outline of product This product is an ultrasonic flow meter mainly for fuel gas and capable of measuring the flow- rate at atmospheric pressure up to 500 kPa or 1000 kPa. The flow meter is installed to pipes by being tightened between pipe flanges. In addition, the flow meter is certified according to the following standards. -
Page 12: Name Of Each Part
1-3. Name of each part Flow meter main unit Specification name plate Drop prevention screw (4 locations) Display section Cable introductory section (See 2-2. Wiring connection.) Arrow Measurement (Fluid flowing direction) section Fluid outlet Fluid inlet Display section Abnormal pressure Abnormal flow rate Battery replacement alarm value... -
Page 13: Precautions For Use
1-4. Dimension drawing Size (mm) Mass Connection Model (kg) diameter UW80 JIS10K80A-RF Approx. 12.5 UW100 JIS10K100A-RF Approx. 10.7 UW150 JIS10K150A-RF Approx. 19.4 Use hexagonal bolts of the following lengths to avoid interference with the display section and body. Recommended bolt specification for 80A/100A: M16 × 55 mm, for 150A: M20 × 65 mm... -
Page 14: Cautions For Operations
2. Before using the product With this flow meter, items concerning measurement, output, and communication can be set. At the time of purchase, the standard factory delivery settings have been made, and the user can use the flow meter as it is. Change the settings according to the usage, if needed. The settings can be changed by button operation and RS485 communication (24 VDC type and 100 VAC type only). - Page 15 Check that the gasket fits in the gasket groove and close the cover. Close the cover carefully so that the earth wire and the lead wire of battery connector may not be caught by the cover. Lead wires of the connectors of the battery Ground wire...
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Page 16: Wiring Connection
2-2. Wiring connection When you connect an external output cable or connect a cable for external power input in 24 VDC type and 100 VAC type, insert each cable into the section shown in the figure in accordance with the following procedure. The GND (signal ground) is connected to the casing. - Page 17 Connect the cable. Procedure to connect the cable for external output (When you do not connect the cable for external output, the procedures (1) to (4) are not required.) Applicable cable size: φ4 to 6.8 mm (Example: VCTF, 0.3 sq, 3-core to 8-core) Terminal mount: M3 If you install the flow meter near an electric noise source, use a shield wire as a cable which is connected to the terminal block and ground the shield.
- Page 18 (3) Make sure that the sheath of the cable gets into the inside of the case, crimp an applicable terminal on the cable, and connect the cable to the terminal mount. Screw size: M3 Recommended tightening torque: 0.5 ±0.1 N•m Note that incorrect wiring may cause a failure.
- Page 19 Procedure to connect the cable for external power input (When you do not connect the cable for external power input, the procedures (5) to (8) are not required.) Applicable cable size: φ6.5 to 12.5 mm (Example: CV 2 sq 2-core, CVV 1.25 sq 2-core) Terminal mount: M3 (in case of 24 VDC), M4 (in case of 100 VAC)
- Page 20 (7) Make sure that the sheath of the cable gets into the inside of the case, crimp an applicable terminal on the cable, and connect the cable to the terminal mount. [In the case of 24 VDC type] Screw size: M3 Recommended tightening torque: 0.5 ±0.1 N•m [In the case of 100 VAC type] Screw size: M4...
- Page 21 (8) Tighten the sealing nut. Recommended tightening torque: 1.5 ±0.1 N•m If a torque wrench is not available, the method of tightening the nut at appropriate torque is to manually tighten the sealing nut completely, or tighten it with a tool, and when you feel load, retighten it by 90° (= 1/4 rotation). Do not tighten further.
- Page 22 Tighten the screws at the 4 locations shown in the figure. Recommended tightening torque: 1.0 ±0.1 N•m Note: If the screws are not tightened enough or tightened with excessive torque, it may cause entry of water and/or breakage. Screw (M4 x 4) “Wiring Connection of Each Power Supply Type”...
- Page 23 Alarm output Load (Nch open drain Pulse output output) (Nch open drain Load output) RS485 Load 4 to 20 mA output Communication Fig. 3 Wiring Connection [24 VDC Type] (RS485 A+) RS485 Communication (RS485 B-) RS485 Communication (4-20mA OUTPUT) 4-20mA出力 ※１ 4 to 20 mA output *1 (PULSE OUTPUT) パルス出力...
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Page 24: Installation
2-3. Installation Precautions for installation and recommended piping conditions are listed in 1) to 12). The measurement may not be performed correctly under certain conditions, so be sure to read the following. 1) Match the arrow on the meter with the forward flow direction of the fluid. 2) Fig. - Page 25 When installing the flow meter near a pressure reducing valve or a flow control valve, ultrasonic noise may be generated inside the piping. Therefore, be sure to strictly follow the “Required Straight Pipe Length L” as shown in Fig. 5-2 below. In particular, when installing the flow meter downstream of a pressure reducing valve, etc., note that there are major restrictions to follow.
- Page 26 This product can be installed indoors or outdoors, in either horizontal or vertical piping. Installation in which the “display section faces downward” and the “cable introduction part faces upward” cannot be performed. It is recommended to use rising piping to install the flow meter if the air contains oil mist, dust, or other materials.
- Page 27 The direction of the display section can be changed by rotating. To change the direction of the display section, loosen the set screw at its neck part using an M4 hex wrench and then rotate the display section. Once it is in the desired orientation, always make sure to tighten the set screw to fix the display section in place.
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Page 28: Startup Procedure
3. Startup procedure After the subject fluid for measurement is set, turn on the power while no fluid flows (0 m /h). 3-1. When the power is turned on When the power is turned on, check that the entire LCD is turned on, and the symbols and units flicker every 2 sec. -
Page 29: Operation Procedure
4. Operation Procedure This product consists of the startup mode, measurement mode, setting mode, and test mode. Using the 3 buttons, you can switch the modes and displays, and make various local settings. For arrangement of the left button, center button, and right button, see Fig. 6. Left button Center button Right button... - Page 30 Startup mode Internal battery type External power supply type [24 VDC] [100 VAC] All indicators ON and symbols and units All indicators ON and symbols and units flicker every 2 sec. flicker every 2 sec. Right button + left button (when battery is changed) Numeric value is "1", and symbols and units flicker every 2 sec.
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Page 31: Display Of Measurement Values (Measurement Mode)
4-1. Display of measurement values (measurement mode) 4-1-1. Conversion display The partition line varies according to the conversion setting. "Without conversion" " With conversion (Normal conversion)" " With conversion (Standard conversion)" 4-1-2.Display of accumulated flow volume The number of digits displayed varies according to the conversion setting. (Total accumulated flow rate) □□□□□□□□. -
Page 32: Display Of Instantaneous Flow-Rate, Temperature, Pressure
By pressing the left button and right button simultaneously while the trip accumulated flow volume is displayed, the trip accumulated flow volume is cleared. If the trip accumulated flow volume exceeds 9999999.9, 0000000.0 is displayed without zero suppress, and the accumulation operation continues. (Trip accumulated flow volume 10000152.6 [Normal•m 4-1-3.Display of instantaneous flow-rate, temperature, pressure The number of the display digits of each item is shown below. -
Page 33: Measurement Of Very Small Flow-Rate (Test Mode)
4-2. Measurement of very small flow-rate (Test mode) The test mode is a function to temporarily cancel the low flow cutoff. Please use the test mode under conditions where there is no flow. You can transit to the test mode by pressing the “right button” for 3 seconds in the measurement mode, and this will allow you to measure very small flow-rates. -
Page 34: Alarm Display
5. Alarm Display In the alarm display, “▲” corresponding to the applicable alarm is turned on. 5-1. Abnormal flow rate measurement When the ultrasonic signal is small and cannot be received, “Abnormal flow rate measurement” is turned on, and “0.00” is displayed as the instantaneous flow-rate value. The accumulation stopped as the accumulated flow volume value just before the error occurrence remains displayed. -
Page 35: Battery Replacement Alarm [Internal Battery Type]
5-2. Battery replacement alarm [Internal Battery Type] When 5 years (including storage period) have passed after the battery connector was connected (the power was turned on), “battery replacement alarm” is turned on to inform the user that it is time to replace the battery. While measurement continues even after “battery replacement alarm” is turned on, it is recommended to replace the battery as soon as possible when “battery replacement alarm”... -
Page 36: Abnormal Temperature Value
5-3. Abnormal temperature value When an error of the temperature value is detected, “Abnormal temperature value” is turned on. When an error of the temperature value is detected, “0.00” is displayed as the instantaneous flow- rate, and an abnormal value is displayed as the temperature. As for the accumulated flow volume value in the main display section, the accumulation process stops and the display shows the value immediately prior to the abnormality. -
Page 37: External Memory Abnormality
5-5. External memory abnormality When abnormality data is detected upon recovery of the accumulated value when the power is turned on by setting of communication or button operation, and external power supply type (24 VDC, 100 VAC), “External memory aberration” is turned on. When “External memory abnormality” is turned on, check and reset the setting value. -
Page 38: Troubleshooting
Battery replacement alarm It indicates the necessity to replace the internal battery. The internal battery needs to be (Contact your nearest Aichi Tokei Denki branch or sales “ ” is turned on (See replaced. office.) page 25). -
Page 39: Specifications
7. Specifications List UW [Nominal diameter] / [Pressure] [Power supply] / [Flow direction] / [Gas type] Model UW80 UW100 UW150 Flange Connection of pipe JIS10K80A-RF JIS10K100A-RF JIS10K150A-RF Type without pressure sensor 1000 kPa Maximum Type with pressure sensor 500 kPa operating (500 kPa) pressure... - Page 40 Model UW80 UW100 UW150 (Power-driven meter only) 4 to 20 mADC (Load resistance 380 Ω or smaller) Analog Select from Instantaneous flow rate, Temperature, and Pressure. Standard: Instantaneous flow rate Nch open drain output (Max. load 24 VDC, 50 mA) Output 1 (accumulated pulse): Standard: 1000 L/P (Select from 100, 1000, and 10000 L/P.) Duty 20 to 80% Output...
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Page 41: Glossary Of Terms Used In Specifications
Glossary of terms used in specifications Actual flow rate Cubic volume of the fluid which flows per unit of time. The actual flow rate changes depending on the temperature and pressure of fluid. The unit of fluid is m Normal conversion flow rate ... -
Page 42: Setting Of Parameters
8. Setting of parameters It is recommended to perform the settings of the flow meter prior to installation. On this product, setting of the items shown in Table 4 can be made by button operation and RS485 communication. At the time of factory shipment, the standard factory delivery settings in Table 4 are set, and the user can use the flow meter as it is. - Page 43 Panel Setting contents upon factory Corresponding setting item Scope of setting contents display shipment Test mode time selection 3 min., 60 min., Unlimited 3 min. *The gas type specified by the Gas type selection Natural gas, Nitrogen customer upon order is set. 80A: 1.3 m See “F18”...
- Page 44 Setting of items related to measurement and display Settings related to measurement and display Selection of "actual flow rate" Actual flow Conversion or "conversion flow rate" rate function selection Conversion Conversion standard flow rate temperature Conversion standard pressure (1) Setting of flow-rate conversion function selection [F1] Set “Actual flow-rate”...
- Page 45 Setting of items related to output Settings related to measurement and display Setting of output pulse unit Output pulse unit Battery replacement alarm Selection of warning output Selection of (Only for internal warning output battery type) Upper limit alarm of accumulated flow volume State of alarm output (Only for external power...
- Page 46 (5) Switchover of analog output [F6] As the analog output type, you can select instantaneous flow-rate, temperature, or pressure according to the usage. When you select instantaneous flow-rate, current based on the maximum flow-rate value setting of analog output [F5] is output. When you select temperature, 4 mA is output at -10°C, and 20 mA is output at +60°C.
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Page 47: Details Of Setting Items
8-1. Details of setting items For [Pressure] and [Power supply] types, items are displayed only for corresponding models, not for other models. [F1] About flow-rate conversion selection As the flow-rate conversion, you can select the actual flow-rate, normal conversion flow- rate, or standard conversion flow-rate. - Page 48 [F2] About conversion standard temperature When you select “Conversion flow rate” in [F1] Flow rate conversion selection, set the temperature to be used as the standard for conversion. The value can be set within the range of -10 to 60ºC in 1ºC steps. When you select “Actual flow rate”, the setting of the conversion standard temperature becomes invalid.
- Page 49 [F6] About switchover of analog output (DC or AC type) Select the output signal of analog output from “Instantaneous flow-rate (Flo)”, “Temperature (tEP)”, and “Pressure (PrS)”. Note that “Pressure” can be selected only for type with pressure sensor. (“Pressure” is not displayed for type without pressure sensor.) [F7] About alarm output selection ...
- Page 50 <Error alarm> An alarm signal is output when an abnormal flow measurement, abnormal temperature value, or abnormal pressure value is detected. [F8] About alarm output lower limit Set the flow-rate value at the lower limit side of the upper/lower limit flow-rate alarm output [F7].
- Page 51 [F16] About test mode time selection You can select the test mode time. At the time of factory shipment, “3 min. (3)” is set. You can select “60 min. (60)” and “Unlimited (--)” in addition to 3 min. [F17] Gas type selection Select “Natural gas (13A)”...
- Page 52 [F20] Selection of with or without pressure value moving averaging (type with pressure sensor) Select either “With averaging (10)” or “No averaging (1)” for pressure values. If “With averaging” is selected, the moving average value of the 10 most recently measured pressures is used for display and output.
- Page 53 A diagram showing the display changeover in each setting mode is given below. Measurement Center button mode or No operation for 3 min. Center button Left button + Left button Right button Left button Flow-rate conversion selection Right button Left button + * The flickering value is Left button Right button...
- Page 54 Alarm output selection * The flickering value is incremented by 1 every time the right button is Left button Right button pressed. Left button + Flicker Left button Flicker Left button Flicker Left button Flicker Left button Flicker Left button Right button Alarm output lower limit...
- Page 55 RTU address Right button Left button Left button Left button Left button Left button 4 times 5 times 2 times 3 times Left button + Right button Instantaneous flow-rate moving average number of times Left button + Right button Left button Right button Left button 3 min.
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Page 56: Warranty And After-Sale Service
Warranty and after-sale service Warranty period For the period of one year after purchase, in case of a failure that is explicitly attributable to our manufacturing process, we will exchange the product for free. Scope of warranty The following are not included in the scope of warranty. Failure caused by force majeure, such as natural disaster, etc. - Page 57 memo...
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- Page 60 1st edition 2025.02...
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