RHEONICS DVM-HPHT User manual

DVM20171127 DVM-HPHT Installation and Operating Instructions
Contents
1  ............................................................................................................................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

DVM-HPHT Installation and Operating Instructions
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©Rheonics, Inc. 2013-17
Confidential to customer. Do not distribute without written permission of Rheonics, Inc.
1What’s in the box
The following items are delivered with the DVM-HPHT system:
•DVM-HPHT module with sensor installed
•SME Electronics (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
installer
Backup O-rings
HPHT-DVM Sensor
SME-TRD
USB cable
Sensor
Removal/
Insertion
tool
Cable gland

DVM-HPHT Installation and Operating Instructions
Page 3of 21
©Rheonics, Inc. 2013-17
Confidential to customer. Do not distribute without written permission of Rheonics, Inc.
2Setting up the system
The sensor measurement system consists of two components:
•HTHP DVM sensor and module
•SME Transmitter (Electronics unit)
The transmitter is shipped fully assembled. Gain access to the connections 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.
3Connecting 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 sensor cable, power cable, Modbus cable, 4-20 mA cables.
Torque
wrench
Sensor cable
Software
installer
Backup O-rings
HPHT-DVM Sensor
SME-DRM
USB cable
Sensor
Removal/
Insertion
tool

DVM-HPHT Installation and Operating Instructions
Page 4of 21
©Rheonics, Inc. 2013-17
Confidential to customer. 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).

DVM-HPHT Installation and Operating Instructions
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©Rheonics, Inc. 2013-17
Confidential to customer. Do not distribute without 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.

DVM-HPHT Installation and Operating Instructions
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©Rheonics, Inc. 2013-17
Confidential to customer. Do not distribute without written permission of Rheonics, Inc.
4Connecting sensor to transmitter electronics
The sensor is connected to the transmitter electronics by a sensor cable. Follow the color code table
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
5Powering the Transmitter
Connect a 24V DC supply to the power input terminals on the transmitter.
Power input terminals are labeled with 24 V DC + and GND.

DVM-HPHT Installation and Operating Instructions
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©Rheonics, Inc. 2013-17
Confidential to customer. Do not distribute without written permission of Rheonics, Inc.
It is important to avoid ground loops in the setup / plant where the SMET is used. Ground loops can
lead to excessive currents on the ground / return wire of the SMETs 24V power supply which can
damage the unit.
To prevent this, we strongly recommend that the SMET is powered by a separate 24V power supply
with galvanic separation. Otherwise, the SMET might be permanently damaged.
6Connecting 4-20 mA outputs
Load impedance: 0 to 720 Ohms
Output range: 4-20mA, (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 input module to V- terminal of SME device
Notes
•The 4/20mA outputs are not galvanically isolated. It is not recommended to route the 4/20mA
to off-site locations if the corresponding 4/20mA input does not provide galvanic isolation.
4/20mA connection, self-powered
24V
Rheonics transmitter
+
-
4/20mA input
R4.36
+
-
4/20mA input
R4.36
+
-
4/20mA input
R4.36
+
-
4/20mA input
R4.36
+
-
VM+
V-
V-
CH1
CH2
CH3
V+
V-
B+
A-
Wiring Option (A)
Wiring Option (B)

DVM-HPHT Installation and Operating Instructions
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©Rheonics, Inc. 2013-17
Confidential to customer. Do not distribute without written permission of Rheonics, Inc.
7Connecting Modbus RTU (RS-485) outputs
7.1 General
All SME devices implement a MODBUS RTU compliant RTU slave. The default configuration of the
MODBUS RTU slave is 38400 and ODD parity. Connection is by RS485-2W where the interface is not
electrical isolated.
7.2 Wiring
Wiring is RS485-2W. The device does not have internal biasing resistors and termination resistors and
proper setup of the RS485 network has to be ensured.
Termination: Termination should be only at the end and beginning of the bus to avoid reflections.
Requirements on termination differ not only on the baud-rate used but 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 stubs on the RS485 bus should be kept to the minimum.
Common: RS485 does allow common mode voltages of +12V / -7V. It is therefore recommended to
use a common wire to ensure common mode voltage is within safe limits for all receivers. In case of
problems it might be necessary to introduce RS485 isolators into the network. The common terminal
for the SME device is the 0V terminal (GND) for the power supply.
RS485 MODBUS
24V
Rheonics transmitter
  
 
 
V+
V-
B+
A-
V+
V-
B+
A-
GND
+5V
GND
DO NOT CONNECT
EARTH TO GND for
marine applications
MODBUS
slave
Stub < 20m
Bus < 1000m
MODBUS
master

DVM-HPHT Installation and Operating Instructions
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©Rheonics, Inc. 2013-17
Confidential to customer. Do not distribute without written permission of Rheonics, Inc.
7.3 Configuration
The SME device allows the configuration of the Modbus address using the RCP software. Please refer
to the RCP manual for instructions.
Factory default settings of Modbus parameters:
address=0 or 1
baudrate=38400
parity=odd
The system is capable of supporting:
•parity settings of odd, even and none
•baudrates of 9600, 19200 and 38400
7.4 Input Registers
The table uses PDU addressing; addresses start at zero. Depending on the PLC used it might be
required to add 1 to 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
Parameter 2 status (See datatypes)
Parameter 3
58
2
Float
Parameter 3 value as float
60
1
Int16
Parameter 3 value scaled by 100 as
signed integer
61
1
Uint16
Parameter 3 status (See datatypes)
Parameter 4
64
2
Float
Parameter 4 value as float
66
1
Int16
Parameter 4 value scaled by 100 as
signed integer
67
1
Uint16
Parameter 4 status (See datatypes)
Parameter 5
72
2
Float
Parameter 5 value as float
74
1
Int16
Parameter 5 value scaled by 100 as
signed integer

DVM-HPHT Installation and Operating Instructions
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©Rheonics, Inc. 2013-17
Confidential to customer. Do not distribute without written permission of Rheonics, Inc.
75
1
Uint16
Parameter 5 status (See datatypes)
Parameter 6
80
2
Float
Parameter 6 value as float
82
1
Int16
Parameter 6 value scaled by 100 as
signed integer
83
1
Uint16
Parameter 6 status (See datatypes)
Parameter 7
88
2
Float
Parameter 7 value as float
90
1
Int16
Parameter 7 value scaled by 100 as
signed integer
91
1
Uint16
Parameter 7 status (See datatypes)
Parameter 8
96
2
Float
Parameter 8 value as float
98
1
Int16
Parameter 8 value scaled by 100 as
signed integer
99
1
Uint16
Parameter 8 status (See datatypes)
7.5 Data-Types
Float: IEEE754 floating point. This data type spans two registers which should be read together.
Depending on the endianness of the host it might be necessary to swap high/low byte and/or the
respective 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 more detailed configuration
Bit 1: Internal configuration error Restart. If error persists call Rheonics for support
Bit 2: Hardware error, e.g. broken temperature sensor. Call Rheonics for support and arrange RMA
Bit 3: Dependency error: a parameter is calculated from other parameters and one of the source
parameter has an error. Check all other parameters for errors.
Bit 4: Device is starting up and no results are ready.
Bit 5: Internal error Restart. If error persists call Rheonics for support.
Bit 8: Parameter result is not stable. Check measurement conditions (flow, vibration, etc.)
Bit 15: Parameter exceeds sensor upper limit. No results available.
Bit 14: Parameter below sensor lower limit. No results available.