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RAMSEY MERCURY FREE TILT SENSORS
FOR NON-HAZARDOUS AREAS
CONTROL UNITS
Model 20-35-NM-F
Model 20-35-NM-DIN
Manufacturer:
Thermo Fisher Scientific
th
501 90
Avenue NW
55433 Minneapolis, MN (USA)
(800) 445-3503
Mercury Free Tilt Sensor
User's Guide
REC 4274 Rev. C
PROBES
Model 20-54-NM-SS
Model 20-52-NM
Model 20-59-NM
Model 20-55-NM-P
Part Number 092241
i
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Table of Contents
Related Manuals for Thermo Scientific 20-35-NM-F
Summary of Contents for Thermo Scientific 20-35-NM-F
- Page 1 Mercury Free Tilt Sensor User’s Guide REC 4274 Rev. C Part Number 092241 RAMSEY MERCURY FREE TILT SENSORS FOR NON-HAZARDOUS AREAS CONTROL UNITS PROBES Model 20-35-NM-F Model 20-54-NM-SS Model 20-35-NM-DIN Model 20-52-NM Model 20-59-NM Model 20-55-NM-P Manufacturer: Thermo Fisher Scientific...
- Page 3 Revision History Revision Number Date Released ECO Number Release Specifics March 2008 1819 Manual first release September 2013 3369 Correct Output Names September 2013 3381 Add specifications...
- Page 4 2007 Thermo Fisher Scientific. All rights reserved. This document is confidential and is the property of Thermo Fisher Scientific. It may not be copied or reproduced in any way without the express written consent of Thermo. This document also is an unpublished work of Thermo Fisher Scientific.
- Page 5 If you transfer the Software Program, you must transfer a copy of these License Terms, all other documentation and at least one complete, unaltered copy of the Software Program to the other party. Unless you have other copies of the Software Program to be used in connection with other Equipment purchased from Thermo, or one of its divisions, you must, at the same time, either transfer all your other copies of the Software Program to the transferee of the Equipment or destroy them.
- Page 7 Thermo Fisher Scientific Warranty The seller agrees, represents, and warrants that the equipment delivered hereunder shall be free from defects in material and workmanship. Such warranty shall not apply to accessories, parts, or material purchased by the seller unless they are manufactured pursuant to seller's design, but shall apply to the workmanship incorporated in the installation of such items in the complete equipment.
- Page 8 Disclaimer Though the information provided herein is believed to be accurate, be advised that the information contained herein is not a guarantee for satisfactory results. Specifically, this information is neither a warranty nor guarantee, expressed or implied, regarding performance, merchantability, fitness, or any other matter with respect to the products, and recommendation for use of the product/process information in conflict with any patent.
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Page 9: Table Of Contents
Model 20-35-NM-DIN Switches Setting ............3-6 Chapter 4 Maintenance and Troubleshooting ............. Indications of Maintenance ...................4-1 Control Unit Model 20-35-NM-F Check Procedure ..........4-2 Control Unit Model 20-35-NM-DIN Check Procedure ...........4-2 Chapter 5 Service Repair and Replacement Parts ............Parts Ordering Information... - Page 10 Control Unit Mod.20-35-NM-F Labels ..............Control Unit Mod.20-35-NM-DIN Labels .............. Probe Label ......................List of Figures Figure 2-1: Tilt Control Unit Model 20-35-NM-F Dimensions ..........Figure 2-2: Tilt Control Unit Model 20-35-NM-DIN Dimensions.........2-2 Figure 2-3: Tilt Sensor Model 20-54-NM-SS ..............
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Page 12: About This Manual
About this Manual This manual contains the information necessary in order to guarantee a safety an correct use of the Ramsey Mercury Free Tilt Sensor system (Control Units with Probe). Read this manual before working with the product. For personal and system safety and for best product performance, make sure you thoroughly understand the contents before using this product. -
Page 13: Organization Of The Manual
Organization of the Manual This manual is organized into 8 chapters. Chapter 1: Introduction - provides a functional overview of the system and the technical specifications. Chapter 2: Installation - provides the steps and instructions necessary to install the equipment Chapter 3: Operation –... -
Page 14: Safety Messages
Safety Messages Instructions in this manual may require special precautions to ensure the safety of the personnel performing the operations. Please read the safety information before performing any operation preceded by this symbol. There are two levels of safety messages: warnings and cautions. The distinction between the two is as follows: WARNING Failure to observe could result in death or serious... -
Page 15: Safety In Use
WARNING Failure to follow safe installation and servicing procedures could result in death or serious injury. Make sure only qualified personnel perform installation and maintenance procedures in accordance with the instructions in this manual. Allow only qualified electricians to open and work in the electronics enclosure WARNING High voltage that may be present on leads could... -
Page 16: How To Get Help
WARNING Only qualified personnel are allowed to carry out maintenance work. Maintenance staff must wear working clothes and individual protective equipment in conformity with safety legislation and binding safety standards. Any alteration to the product or replacement of any parts made without manufacturer’s... -
Page 17: Certifications
Certifications CONTROL UNIT Model : 20-35-NM-F TAG MARKING CE Certification CSA International -40°F (-40°C) ≤ Ta ≤ +122°F (+50°C) Master Contract : 158791 Model : 20-35-NM-DIN TAG MARKING CE Certification CSA International -40°F (-40°C) ≤ Ta ≤ +122°F (+50°C) Master Contract : 158791... - Page 18 PROBE Models : 20-54-NM-SS / 20-52-NM / 20-59-NM / 20-55-NM-P TAG MARKING CE Certification xviii...
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Page 19: Chapter 1 Introduction
Chapter 1 Introduction This chapter describes the applications appropiate for the control units for Mercury Free Tilt Sensor system and their respective specifications. Applications The strong and simple structure allows for safety in operation and ease of installation. The principal use conditions are: Silos and hopper Stock pilings Blocking in the charge/discharge areas of conveyor belt... - Page 20 1.2.1 Probe Specifications Operating Voltage: (From Control Units Model 20-35-NM-F / Model 20-35-NM-DIN) Current Flow: Vertical Position 18 mA approx. Tilted (Inclination Probe Higher 15°) 8 mA approx. Supply Shorted 26 mA approx. Failure Supply (Circuit Open) 0 mA Temperature Ratings: -40°F(-40°C) ≤ Ta ≤ +122°F(+50°C)
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Page 21: Specifications
Control Unit 1.3.1 Model 20-35-NM-F (Field Mount Version) The Control Unit is housed in an enclosure with green (“normal”) and red (“alarm”) indicating lights on the front cover. An adjustable selection of 1, 2, 4, or 6 seconds of time delay in the control unit circuit will prevent false or premature contact transfer caused by momentary tilting of probe. -
Page 22: Model 20-35-Nm-Din (Internal Cabinet Version)
1.3.2 Model 20-35-NM-DIN (Internal Cabinet Version) This Control Unit version must be used ONLY inside an electrical cabinet or a enclosure with degree of protection IP 65 min. The Control Unit is housed in an enclosure with the following indicating lights on the front cover: led (red) OFF for Probe Tilted led (red) ON for Probe Alarm (Failure or Probe supply... -
Page 23: Symbol Identification
Pollution Degree: 2 Installation Category: II Symbol Identification Table 1-1 describes the symbols used in this manual. Table 1-1: Symbol Identification Symbol Description LTERNATING CURRENT ARTH GROUND ERMINAL ROTECTIVE ONDUCTOR ERMINAL AUTION RISK OF ELECTRIC SHOCK AUTION REFER TO ACCOMPANYING DOCUMENTS... -
Page 25: Chapter 2 Installation
3. Use two separate conduits/cable glands, one for the probe and one for the control and/or power circuits. 4. The terminals will accept a 12 AWG stranded wire (maximum) 5. For electrical connections, refer to Figure 2-7. Figure 2-1: Control Unit Model 20-35-NM-F & 20-35-NM-F-4X Dimensions... - Page 26 Model 20-35-NM-DIN This model is suitable for installation ONLY inside an enclosure with proper mechanical protection. 1. The Control Unit should be mounted in a vibration, heat and humidity free area where the ambient temperature does not fall below -40°C (-40°F) or exceed 50°C (122°F).
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Page 27: Probe Installation
Probe Installation 1. The probe must be installed in a vertical position, suspended at a flexible joint that allows free movements in all directions. 2. Carefully chose the location of the Probe. It is very important to choose the right installation position so the material flow will cause a tilt action and not bury the probe. - Page 28 Figure 2-3: Probe Model 20-54-NM-SS – Stainless Steel Probe Dimensions are inches and [mm]...
- Page 29 Figure 2-4: Probe Model 20-52-NM – Heavy Weight Probe Dimensions are inches and [mm]...
- Page 30 Figure 2-5: Probe Model 20-59-NM – Steel Probe Dimensions are inches and [mm]...
- Page 31 Figure 2-6: Probe Model 20-55-NM-P – Plastic Probe Dimensions are inches and [mm]...
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Page 32: Electrical Installation
Electrical Installation CONTROL UNIT Model 20-35-NM-F The Control Unit enclosure is supplied with (2) .875 dia. conduit holes in the bottom. Use separate conduits/cable glands for probe and power circuits connection. Figure 2-7: Control Unit Model 20-35-NM-F Terminal Wiring... -
Page 33: Figure 2-8: Control Unit Model 20-35-Nm-F Internal Layout
Figure 2-8: Control Unit Model 20-35-NM-F Internal Layout... -
Page 34: Figure 2-9: Control Unit Model 20-35-Nm-Din Terminal Wiring
CONTROL UNIT Model 20-35-NM-DIN The Control Unit enclosure is supplied with terminals for connection. Use separate conduits/cable glands for probe and power circuits connection. Figure 2-9: Control Unit Model 20-35-NM-DIN Terminal Wiring PROBE TILTED 2-10... -
Page 35: Figure 2-10: Control Unit Model 20-35-Nm-Din Internal Layout
Figure 2-10: Control Unit Model 20-35-NM-DIN Internal Layout FAULT 2-11... -
Page 37: Chapter 3 Operation
Chapter 3 Operation When the Ramsey Mercury Free Tilt Sensor system is used as a no-flow detector, the normal position of the probe is tilted. When used as a level detector, the normal position is vertical (not tilted). In both cases the tilted condition indicates the presence of material. - Page 38 Low Application Examples Typical Plugged Transfer Chute “Alarms”...
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Page 39: System Configuration
Use the following Function Mode tables to determine the correct jumper settings for your application. 3.1.1 Model 20-35-NM-F Function Modes Table 3-1: Model 20-35-NM-F Function Modes Switch Settings Function Probe Condition Lamp... -
Page 40: Model 20-35-Nm-F Switches Setting
3.1.2 Model 20-35-NM-F Switches Setting SW1 and SW2 Settings are used to delay the indication of alarm conditions. This will prevent alarms due to material momentarily moving the probe. Table 3-2: SW1 and SW2 Settings Delay in Seconds SW3 determines whether the alarm functions of the control unit respond like a Flow or Level application. -
Page 41: Table 3-6: Model 20-35-Nm-Din Function Modes Switch Settings
3.1.3 Model 20-35-NM-DIN Function Modes Table 3-6: Model 20-35-NM-DIN Function Modes Switch Settings Function Probe Condition Tilted Delay on Relay K1 (See table (See table Mode Position Transition Contact 3-8) 3-9) to (See table 3-7) DEFAULT SETTING Alarm for Tilted Alarm Open High Level... -
Page 42: Model 20-35-Nm-Din Switches Setting
3.1.4 Model 20-35-NM-DIN Switches Setting SW1 and SW2 Settings are used to delay the indication of alarm conditions. This will prevent alarms due to material momentarily moving the probe. Table 3-7: SW1 and SW2 Settings Delay in Seconds SW3 determines whether the alarm functions of the control unit respond like a Flow or Level application. -
Page 43: Chapter 4 Maintenance And Troubleshooting
Chapter 4 Maintenance and Troubleshooting INFORMATION The manufacturer accepts no liability for any cause, either direct or indirect, of injury to persons and damage to objects resulting from the incorrect, improper, or negligent use of the unit, or from inexperience or negligent running and/or maintenance of the unit itself. -
Page 44: Control Unit Model 20-35-Nm-F Check Procedure
Control Unit Model 20-35-NM-F Check Procedure 1. Check the power supply voltage. Make sure the AC voltage selector SW4 is set to the proper voltage. The proper voltage must be present between the HOT and NEUT terminals. 2. Check the state of the “Probe Fault” relay K2 and (red) indicator LED 2. If the probe is open-circuited, or the probe cable is shorted, the LED 2 is ON and relay K2 energized. -
Page 45: Chapter 5 Service Repair And Replacement Parts
Chapter 5 Service Repair and Replacement Parts This chapter provides information about service, repair, and replacement parts for your Thermo Fisher Scientific product. It includes the telephone numbers for various departments at Thermo, the procedure for ordering replacement parts, a Return Material Authorization Form, and the parts list for the product are also included in this chapter. -
Page 46: Parts Ordering Information
Parts Ordering Information For the fastest service when ordering parts, telephone or FAX the Thermo Fisher Scientific Parts Department at the numbers given below. Your regional field service representative can also assist you with parts orders. The recommended procedure for ordering parts is: 1. -
Page 47: Chapter 6 Decommissioning And Dismantling
Chapter 6 Decommissioning and Dismantling Decommissioning of the System If the System has to be stopped for a fairly long period of time, then you are advised to take the following precautions: Disconnect the product from the circuit Move the product “out of production”, clean all parts of it with compressed air in order to remove all dust and other foreign bodies Cover the unit and protect it from dust during storage Make sure the ambient temperature in the place where the unit is to be stored conforms to... -
Page 48: Chapter 7 Labels
This chapter describes the labels reporting the approvals of all Mercury Free Tilt Sensor systems. The following figures show where the labels are positioned on the instruments. Control Unit Model 20-35-NM-F Labels The following figure shows where the labels are positioned on the instrument. -
Page 49: Control Unit Mod.20-35-Nm-Din Labels
Control Unit Model 20-35-NM-DIN Labels The following figure shows where the labels are positioned on the instrument. -
Page 50: Probe Label
Probe Label The following figure shows where the labels are positioned on the Tilt Sensor Probes.