DVM20171127 DVM-HPHT Installation and Operating Instructions
Contents
1
What’s in the box
............................................................................................................................ 2
2
Setting up the system ..................................................................................................................... 3
3
Connecting and disconnecting wires to the terminal blocks on SME electronics .......................... 3
4
Connecting sensor to transmitter electronics ................................................................................ 6
5
Powering the Transmitter ............................................................................................................... 6
6
Connecting 4-20 mA outputs .......................................................................................................... 7
7
Connecting Modbus RTU (RS-485) outputs .................................................................................... 8
7.1
General .................................................................................................................................... 8
7.2
Wiring ...................................................................................................................................... 8
7.3
Configuration .......................................................................................................................... 9
7.4
Input Registers ........................................................................................................................ 9
7.5
Data-Types ............................................................................................................................ 10
8
Operating the system .................................................................................................................... 12
9
Handling the Sensor ...................................................................................................................... 13
9.1
Cleaning the sensor ............................................................................................................... 13
9.2
To remove the sensor: .......................................................................................................... 14
9.3
To re-insert the sensor: ......................................................................................................... 16
9.4
Mounting the DVM-HPHT ..................................................................................................... 19
10
Notes/Errata: ............................................................................................................................ 21
Page 1: ...ng sensor to transmitter electronics 6 5 Powering the Transmitter 6 6 Connecting 4 20 mA outputs 7 7 Connecting Modbus RTU RS 485 outputs 8 7 1 General 8 7 2 Wiring 8 7 3 Configuration 9 7 4 Input Registers 9 7 5 Data Types 10 8 Operating the system 12 9 Handling the Sensor 13 9 1 Cleaning the sensor 13 9 2 To remove the sensor 14 9 3 To re insert the sensor 16 9 4 Mounting the DVM HPHT 19 10 Note...
Page 2: ...ectronics Transmitter housing or DIN rail housing Sensor cable USB stick with software tool installer Tools for removing and re installing sensor in the DVM HPHT module Spare O rings and backup rings for sensor USB cables Torque wrench Based on your selection you may have a SME TRD SME Transmitter with Display or SME DRM SME DIN Rail Mount as shown below Torque wrench Sensor cable Software install...
Page 3: ...nnections by unscrewing the cover and removing the display if ordered with display by pulling it out The SME electronics module is now accessible for connecting the sensor power and communication cables 3 Connecting and disconnecting wires to the terminal blocks on SME electronics The wires are generally color coded the ends should be crimped with 8mm diameter crimps This connection is valid for s...
Page 4: ...Do not distribute without written permission of Rheonics Inc To connect the wires insert the crimped end in the correct port on the terminal block till it clicks firmly in place and cannot be pulled out when tugging on the wires do not tug on the wires with a lot of force as that may damage the terminal block ...
Page 5: ...ut written permission of Rheonics Inc To disconnect the sensor wires press the white tab for that specific port with a small flat screw driver as shown in picture below where the user is removing wire connected to port 1 While pressing on the white part pull out the cable connection with the other hand as shown in the picture below ...
Page 6: ...le below to connect the correct wires from the sensor cable to the sensor connection terminal strip on the transmitter The leads are delivered with crimped ends cable can be shortened if needed but sleeves should be crimped on the stripped ends Wire Color Sensor connection terminal Red 8 Blue 7 Pink Rose 6 Grey 5 Yello 4 Green 3 Brown 2 White 1 not connected 0 5 Powering the Transmitter Connect a ...
Page 7: ... 3 5mA error Galvanic isolation none Wiring Option A Connect positive terminal of current input module to desired channel terminal of SME device Connective negative terminal of current input module to negative power supply terminal used for SME device Wiring Option B Connect positive terminal of current input module to desired channel terminal of SME device Connective negative terminal of current ...
Page 8: ... also on the slew rate of device internal drivers As a general rule if there are devices on the RS485 bus that allow fast transmission speeds and cable lengths exceed a few meters then termination is required Biasing Biasing of the RS485 BUS is required If biasing is omitted communication may work unreliably or not at all See figure below for Pull Up Pull Down resistors Connections Connection stub...
Page 9: ... the addresses in the table below Table 1 Modbus input registers Address Dec Length of registers Type Description Parameter 1 40 2 Float Parameter 1 value as float 42 1 Int16 Parameter 1 value scaled by 100 as signed integer 43 1 Uint16 Parameter 1 status See datatypes Parameter 2 48 2 Float Parameter 2 value as float 50 1 Int16 Parameter 2 value scaled by 100 as signed integer 51 1 Uint16 Paramet...
Page 10: ...registers Int16 Signed 16 bit integer register Uint16 Unsigned 16 bit integer Parameter status The parameter status is a bitmask of individual status bits As a general rule Bit 0 checking should be implemented where a set bit corresponds to an error warning condition In case of a critical error the parameter value is also set to NAN not a number See IEE754 Bit 0 General error Check other bits for ...
Page 11: ...t written permission of Rheonics Inc Bit 13 Parameter value above upper warning range Measurements might not be accurate and sensor performance might be reduced Bit 12 Parameter value below lower warning range Measurements might not be accurate and sensor performance might be reduced Here is an image of a fully connected transmitter ...
Page 12: ...TRONIC BOX MUST BE ATTACHED TO THE COMPUTER WITH THE USB CABLE AND POWERED UP IN ORDER FOR THE SYSTEM TO OPERATE 1 Connect the sensor to the Transmitter instructions in section 2 2 Connect power to Transmitter instructions in section 3 3 Connect the micro USB cable to the Transmitter electronics Connect the other end to a free USB port on the computer 4 Now that the proper operating mode has been ...
Page 13: ...luids or tenacious solids that adhere to the resonator will distort its readings The resonant element contains small permanent magnets If the fluid in which the resonator is immersed contains suspended magnetic particles these may likewise cling to the sensor and distort its readings In any measurement scenario in which the sensor could become coated with tenacious fluids solids or magnetic partic...
Page 14: ...remove the sensor Using the provided torque wrench remove the sensor retaining screw This will require approximately 20 N m of torque It may be necessary to hold the DVM HPHT in a bench vise to apply the necessary torque Use soft jaw covers in the vise to avoid marring the DVM 2000 This will reveal the back of the sensor base with its M4 threaded removal insertion hole Torque wrench Sensor inserti...
Page 15: ...cs Inc Holding the black ring of the sensor removal tool screw in the M4 threaded rod Holding the black screw grip screw the threaded rod into the hole in the back of sensor as far as it will go finger tight Holding the back of the threaded rod screw the black ring clockwise against the upper surface of the module until it has backed the sensor out of the module ...
Page 16: ...nd the base of the sensor Applying a light film of lubricant to the O ring rather than the bore of the module will tend to push the lubricant AWAY from rather than into the bore minimizing any chance of contamination of the fluid under test by the O ring lubricant In any event very little lubricant is required Suitable lubricants include silicone grease light mineral oil petroleum jelly or simply ...
Page 17: ...ritten permission of Rheonics Inc Screw the insertion tool without the black ring finger tight into the M4 thread on the base of the sensor Exerting gentle pressure rocking and turning the sensor slightly push while turn the sensor into bore in the module Make sure that the locating tabs are sitting IN the locating notches in the module ...
Page 18: ... oriented and sitting flush against the bottom of the locating notches in the module Re install the sensor retaining screw screwing it down until it contacts the sensor Now using the torque wrench with Allen key extension tighten the sensor retaining screw to a torque of 20 N m 15 lb ft It may be necessary to hold the DVM HPHT in a bench vise to apply the necessary torque Use soft jaw covers in th...
Page 19: ...gh holes for M5 socket head screws the other two are tapped with ISO M5 threads The whole pattern for a mounting plate is Either the through holes or the tapped holes can be used depending on the requirements of the test setup The DVM HPHT should be mounted with the sensor retaining screw on the top This ensures that small bubbles trapped in the module s chamber will collect around the base of the...
Page 20: ... water stationary in the DVM HPHT measurement chamber Even degassed water tends to have air dissolved in it which eventually forms micro bubbles on the surface of the sensor disturbing its geometry This is not a problem at higher pressures which tend to re dissolve any gases present Hydrocarbons glycols and other fluids with low surface tension are less prone to bubble formation The DVM HPHT will ...
Page 21: ...DVM HPHT Installation and Operating Instructions Page 21 of 21 Rheonics Inc 2013 17 Confidential to customer Do not distribute without written permission of Rheonics Inc 10 Notes Errata ...
