Related Manuals for Nohken VL13 CE Series
Summary of Contents for Nohken VL13 CE Series
- Page 1 ＴＳ０２－１０００３９ ＩＮＳＴＲＵＣＴＩＯＮ ＭＡＮＵＡＬ VIBRATING LEVEL SENSOR MODEL: ＶＬ１３□□－ＣＥ ＶＬ２３□□－ＣＥ ＶＬ３３Ｆ－ＣＥ Issued 2019-11-28...
- Page 2 Bef ore handling the equipment, read this manual caref ully. ・ Instructions in documents submitted by Nohken or its repr esentative have higher pr iorit y than t hose in this manual.
- Page 3 Do not alter or disassemble the equipment, unless you have been instructed to do so by Nohken or its repr esentative. Failur e to obser ve this may result in: - malf unction of or damage to the equipm ent or connected devices;...
- Page 4 CAUTION Handle the equipment with care. Do not drop, throw, or give a strong shock to avoid damage. Observe operat ion conditions specif ied in the manual. Use outside the specif ied conditions may result in malf unction of or damage to the equipment or connected devices, ignition, user injur y, or electric shock.
- Page 5 (1) year from the date of original shipment from Nohken’s factory. B) Nohken will not assume liability for loss nor damage resulting from the use of the equipment. C) Nohken will not assume liability for damage resulting from: C-a) not observing instructions in this manual;...
-
Page 6: Table Of Contents
Table of Contents 1.PURPOSE OF USE …………………………………………… 2.DESCRIPTION …………………………………………… 2.1 Description …………………………………………… 2.2 Principle of Operation …………………………………………… 3.SPECIFICATIONS …………………………………………… 3.1 Model Code …………………………………………… 3.2 Specifications …………………………………………… 3.3 Outline Drawing …………………………………………… 4.HANDLING NOTES …………………………………………… 5.INSTALLATION …………………………………………… 5.1 Unpacking …………………………………………… 5.2 Mounting ……………………………………………... -
Page 7: Purpose Of Use
1. PURPOSE OF USE This product is designed to detect fine powders, solids, granular materials, bulk solids or sludge blanket at a desired level, and send signals. The signals are used to trigger alarms or control electromagnetic switches. Do not use the product for any other purpose. 2. -
Page 8: Specifications
3.2 Specifications Table 3-1 Product Vibrating Level Sensor Model VL13N, F, G (T) VL23N, F, G (T) VL33F solids, granular materials, bulk solids, Measured Material sludge blanket (excluding VL33) Operating Characteristics Sensitivity Bulk density ≧ 0.2 (excluding sludge blanket applications) Operation indicator Power: green LED，... -
Page 9: Outline Drawing
3.3 Outline Drawing ① Detecting pipe Directly contacts material and detects it. Vibrates without contacting material. Vibration decreases as material covers the pipe. ② Threaded connection (VL13N/T, VL23N/T) Process connection to mount the sensor on a hopper. ③ Flange (VL13F/T, 23F/T, 33F) Process connection to mount the sensor on a hopper. -
Page 10: Handling Notes
4. HANDLING NOTES Observe instructions below when handling the product, or faulty operation or user injury may result. (1) Lay the product on a flat surface to prevent it from falling down. Provide support such as wood pieces beneath the product to prevent it from rolling and damaging the detecting pipe. -
Page 11: Installation
5. INSTALLATION WARNING This product is not of the explosion proof model . Never use it in areas where flammable or explosive gases or vapors are expected to be generated. 5.1 Unpacking (1) Open the packaging and take out the product. When handling the product, always hold the process connection (threaded or flanged) or the part of pipe close to the process connection, and somewhere else. -
Page 12: Mounting
5.2 Mounting 5.2.1 Mounting location Ensure ample space above and around the mounting point for easy handling and maintenance. Note that the space between ceiling/wall and the hopper must be large enough to accommodate overall length of the product. This must be ensured after the product is mounted for future maintenance. - Page 13 (4) Beware of bridge formation Avoid locations adversely affected by bridging. Ensure the product will not be damaged when the bridge falls. (Fig. 5-5) Fig. 5-5 (5) Avoid fill path to prevent faulty operation and product damage. Provide a guard above the product, if necessary.
- Page 14 (9) Ensure lateral load applied to the detecting pipe will not exceed the rating. Maximum load at the end of the pipe (φ17.3mm, 270mm long) is 0.55kN (static load). Load greater than this may cause faulty operation or product damage. (Fig. 5-9) In applications where material rapidly moves or excessive load is expected, provide a guard (Fig.
- Page 15 5.2.2 Mounting the Products (1) Flanged units Fit the hopper flange and the product flange, and secure them using bolts according to standards and a suitable tool. Use a gasket in pressure applications to prevent leak. Note that bolts and gaskets are optional parts. (2) Threaded units Secure the product using a suitable tool.
-
Page 16: Wiring
6. WIRING 6.1 Before Wiring (1) Disconnect power to cabling. WARNING Disconnect power before wiring. Otherwise electric shock, or ignition or human injury due to leakage or short circuit of energized parts may result. (2) Use cable rated for 35℃ higher than the rated temperatures for the housing. The cable inlet accommodates cables of 10 to 18mm in diameter. -
Page 17: Wiring
6.2 Wiring (1) Loosen the two fixing screws on the terminal cover, and remove the cover. Do not lose the cover as it is used after wiring is complete. Fig. 6-2 (2) Figure 6-3 shows wiring diagrams. Use a suitable tool when wiring. Terminal screws are of M3.5. -
Page 18: Cable Inlet
(3) Place the terminal cover, and secure it with the two fixing screws. Fig. 6-4 6.3 Cable Inlet Cable inlet is of G 3/4 or equivalent size. Use a cable gland or a conduit to secure the cable. In either case, lead the cable downward in front of the cable inlet to prevent water entry. -
Page 19: Part Name And Function
7. PART NAME AND FUNCTION Fig. 7-1 ① Terminal block For power and relay output connection. ② Power lamp [POW] Lights when powered. (green LED) ③ Alarm lamp [DET] Lights when relay is energized. (red LED) ④ Vibration check terminal [VIBR(+)] Gives output of 0 to 5V DC that represents sensor vibration level. -
Page 20: Operation
8. OPERATION This product is basically adjustment free. Use them in the as-delivered state. Changing switch or trimmer setting may cause faulty operation. Sensitivity adjustment may be necessary when: - Material has low bulk density or high fluidity, and the product cannot detect the level. - Material builds up on the detecting pipe and erratic signals are sent. -
Page 21: Adjusting Sensitivity
8.3 Adjusting Sensitivity CAUTION Adjust sensitivity with the product mounted on the same hopper and using the same material as in the actual application. If different, adjusted sensitivity may not suit the actual application due to bulk density difference. (1) Sensitivity can be adjusted with or without the product detecting the material. (2) Ensure that the product is powered up. - Page 22 (4) Operation check After setting sensitivity, check operation using the measured material. Set the tester so that it measures 0 to 5V DC with 0.1V resolution. Then connect the positive wire to the vibration check terminal, and the negative wire to the COM terminal. (a) Without material contacting the detecting pipe, the product gives approximately 5V and non-detection signal.
-
Page 23: Maintenance And Inspection
9. MAINTENANCE AND INSPECTION Perform maintenance and inspection after removing the product from the hopper. Read section 4 HANDLING NOTES before staring. Ensure ample space for maintenance. 9.1 Removing from Process (1) Remove the product from the hopper. Disconnect power before starting maintenance. WARNING Disconnect power before starting maintenance. -
Page 24: Maintenance
See chapter 6 Wiring. 9.5 Component Replacement Component replacement has to be carefully carried out using suitable components from Nohken not to impair performance. Therefore replacement is done in our factory. Please contact our sales office when component replacement is required. -
Page 25: Storing
10. STORING Observe the following instructions if the product is not used right after delivery and stored, or is removed from service and stored. Failure to observe these instructions may result in product damage or cause faulty operation. (1) Store the product in the following conditions. - Temperature: -10 to +60℃... -
Page 26: Troubleshooting
11. TROUBLESHOOTING CAUTION In the event of trouble, perform the following and nothing else. If you have questions, please contact our sales office. Trouble Possible cause Corrective action Reference Does not measure a level. Material bulk density Use High sensitivity 8.3 (3) (b) (Overfill resulted.) too low (<0.2). -
Page 27: Glossary
12. GLOSSARY Terms used in this manual are defined in the chart below. This chart excludes the terms which have already been defined earlier in this manual. Component that vibrates to detect material. Detecting pipe Decreases vibration as material covers the detecting pipe. Electrical device designed not to ignite explosive gases or Explosion proof model vapors in the surrounding. - Page 28 OSAKA HEAD OFFICE : 15-29 Hiroshiba-cho, Suita, Osaka 564-0052, Japan TEL: 81-6-6386-8141 FAX: 81-6-6386-8140 TOKYO HEAD OFFICE : 67 Kandasakumagashi, Chiyoda-ku, Tokyo 101-0026, Japan TEL: 81-3-5835-3311 FAX: 81-3-5835-3316 NAGOYA SALES OFFICE: 3-10-17 Uchiyama, Chikusa-ku, Nagoya, Aichi 464-0075, Japan TEL: 81-52-731-5751 FAX: 81-52-731-5780 KYUSHU SALES OFFICE: 2-14-1 Asano, Kokurakita-ku, Kitakyushu, Fukuoka 802-0001, Japan TEL: 81-93-521-9830...