RHEONIK RHE26 Installation manual

RHE26/27 Installation & Startup Guide –Doc. No. 8.2.1.06 –Ver. 1.40
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RHE26/27
Installation & Startup Guide
D oc u me n t N o. : 8 . 2. 1 . 0 6
V er s i on 1 . 4 0 A P R - 2019

RHE26/27 Installation & Startup Guide –Doc. No. 8.2.1.06 –Ver. 1.40
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Table of Contents
1General Information ..........................................................................................................4
1.1 Important Safety Instructions for operating Coriolis Flowmeters ......................................4
1.2 Manufacturer’s Liability......................................................................................................4
1.3 Additional Resources ..........................................................................................................4
2Quick Start ........................................................................................................................5
3Installation........................................................................................................................5
3.1 Mechanical Installation ......................................................................................................5
3.2 Electrical Installation ..........................................................................................................6
Interconnecting RHE/RHM..................................................................................................6
3.2.1.1 RHM Electrical Connection Type JM & SM (11 Terminals) .................................................7
3.2.1.2 RHM Electrical Connection Type TM (PTFE Cable) .............................................................8
3.2.1.3 RHM Electrical Connection Type JO (12 Terminals)............................................................9
3.2.1.4 Legacy RHM Sensors (9 Terminals)...................................................................................10
Power Supply and Grounding ...........................................................................................11
3.2.2.1 Grounding .........................................................................................................................11
3.2.2.2 12V to 24V DC Power Supply ............................................................................................11
3.2.2.3 100V to 240V AC Power Supply ........................................................................................11
3.2.2.4 AC and DC Supply..............................................................................................................12
Control Inputs and Outputs ..............................................................................................12
3.2.3.1 Digital Outputs..................................................................................................................12
3.2.3.2 Analog Outputs.................................................................................................................13
3.2.3.3 Digital Inputs.....................................................................................................................15
3.2.3.4 Analog Input .....................................................................................................................16
4Operation and Configuration ........................................................................................... 17
4.1 Function of the Pushbuttons.............................................................................................17
4.2 Passcodes and Menu Selection.........................................................................................18
4.3 Zero Offset Calibration......................................................................................................19
4.4 Change of Positive Flow Direction ....................................................................................19
4.5 Temperature Measurement Configuration ......................................................................20
4.6 Input/Output Configuration..............................................................................................21
Analog Output Configuration ...........................................................................................21
Digital Output Configuration ............................................................................................22
Digital Input Configuration ...............................................................................................25
5Remote Operation ........................................................................................................... 26
5.1 USB....................................................................................................................................26

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5.2 RS485 ................................................................................................................................26
5.3 HART .................................................................................................................................26
6Service and Maintenance................................................................................................. 27
6.1 Maintenance and Calibration...........................................................................................27
6.2 Troubleshooting................................................................................................................27
6.3 Service...............................................................................................................................27
6.4 WEEE and RoHS ................................................................................................................27
7Ordering Code ................................................................................................................. 28
7.1 RHE26................................................................................................................................28
7.2 RHE27................................................................................................................................28
Appendix A Ex-Safety Instructions................................................................................... 29
A.1 Safety instructions for the installation in a hazardous area:............................................29
A.2 System Description: ..........................................................................................................30
A.3 Electrical Safety Limits ......................................................................................................30
A.4 Thermal Safety Limits .......................................................................................................31
A.5 Grounding and Shielding ..................................................................................................31
A.6 Installation........................................................................................................................32
A.7 Electrical connection of power supply and I/O .................................................................32
A.8 Electrical connection to RHM............................................................................................32
A.9 Ordering Code...................................................................................................................33
A.10 Technical Data ..................................................................................................................34
A.11 Compliance .......................................................................................................................34
A.12 Service and repair .............................................................................................................34
A.13 Contact address ................................................................................................................35
Appendix B Technical Information .................................................................................. 36
B.1 Technical Data ..................................................................................................................36
B.2 Mechanical Drawings .......................................................................................................38
B.2.1 RHE26................................................................................................................................38
B.2.2 RHE27................................................................................................................................40
Appendix C CE Certificates .............................................................................................. 42

RHE26/27 Installation & Startup Guide –Doc. No. 8.2.1.06 –Ver. 1.40
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1General Information
1.1 Important Safety Instructions for operating Coriolis Flowmeters
The RHE26 and RHE27 transmitter models are designed to be installed through a control
panel or enclosure door so that the terminals on the rear are protected from water and
moisture ingress. The front panels of the RHE26 and RHE27 provide a protection class
of IP20. They are not suitable for installation in wash down or other “wet” areas.
For RHE26 and RHE27 units requiring 12 to 24V DC power, the use of a properly
grounded (PELV) supply is highly recommended.
The use of shielded cables for all I/O signals is recommended to prevent interference
from high level EMI.
Only the specifically designed shielded cable supplied by Rheonik should be used to
connect RHE Transmitters to RHM Flow Sensors. Do not use other types of cable.
For safety instructions regarding RHM Coriolis Flow Sensors, please refer to the RHM
installation and startup guide manual.
These measuring instruments are not designed for, and should not be installed in, life-
preserving systems used in the medical, motor vehicle, aircraft, water craft or mining
industries.
All national regulations and standards regarding electrical installation must be
observed!
1.2 Manufacturer’s Liability
Rheonik assumes no liability for loss and/or consequential damages stemming from the
use of this product utilized in life-preserving systems in the medical, motor vehicle,
aircraft, water craft or mining industries.
Rheonik accepts no liability for loss or damage resulting from the improper use of any
of its products.
Rheonik assumes no liability for the loss of production and/or consequential damage
from the use of this product unless such liability has been expressly and contractually
agreed.
Rheonik provides a standard one year from shipment warranty on all products for
workmanship and materials. Performance of this warranty will be at the Rheonik
manufacturing facility.
Rheonik assumes no liability for determining the suitability of its products in any specific
application. This is the sole responsibility of the end user.
1.3 Additional Resources
This guide is intended as a quick reference instruction to aid the
installation and startup of an RHE26/27 Coriolis mass flow transmitter
with an RHM flow sensor and is a supplement to the documentation
found in the RHE2x Desktop Reference. The RHE2x Desktop Reference
and further resources are available for download from the Rheonik
website:
www.rheonik.com

RHE26/27 Installation & Startup Guide –Doc. No. 8.2.1.06 –Ver. 1.40
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2Quick Start
A complete flowmeter system typically consists of a:
RHMxxx Sensor
RHExx Transmitter
Interconnection cable
Carry out the following steps to prepare the flow meter for operation:
1) If not already done, install the RHM sensor in line and make sure that the interconnecting
cable connections are made (refer to the RHM Coriolis Sensor Installation Guide for
additional information on mechanical installation). Connect the interconnecting cable to
the RHE using the terminating scheme that matches the RHM electrical connection type
(see section 3.2.1 for electrical termination schemes).
2) Connect all signal input, output and communications interface wiring as required (section
3.2.3).
3) Connect power supply (section 3.2.2).
NOTE:
For safety, always connect the protective ground.
For installations in hazardous areas, a protective ground must always be connected.
4) Switch on the power supply. The display backlight will light up and after a power up
sequence, the display will show the flow measurement screen. In case of an error the
backlight will turn red.
5) Flush the RHM flow sensor with process fluid and ensure that it is free of air bubbles (in
case of a liquid process fluid) or liquid droplets (in case of a gaseous process fluid).
6) Wait until the RHM temperature has stabilized and then carry out a zero point calibration
(section 4.3):
Ensure a zero flow condition is present in the flow sensor by closing isolation valves
Initiate zeroing of the sensor and wait for the zeroing procedure to complete
Open isolation valves to allow flow through the sensor
3Installation
3.1 Mechanical Installation
The RHE26 and RHE27 are panel mount transmitters with housings compliant to IEC 61554.
Installation is through panel cutouts of the following dimensions:
Table 1: Cutout Dimensions
RHE26

 mm x   mm
RHE27

 mm x  mm
Before cutting any holes, ensure that there is adequate clearance to accommodate cables behind
the transmitter once installed.
To assist smooth installation, deburr cutout before installing transmitter.

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The housings are supplied fitted with spring clip retainers. To install, push the housing into the
cut-out from the front of the panel.
The RHE26 can optionally be DIN rail mounted for in-panel installation.
To remove transmitter from the panel, depress the retaining springs in towards the housing sides
and gently push the housing out of the panel from the back.
Technical data and mechanical drawings can be found in Appendix B.
3.2 Electrical Installation
Caution, the surface of the connection box may be hot if a hot fluid is running through
the RHM sensor.
Electrical connections to the transmitter are made onto multi-conductor plug headers. The
connectors are color coded for ease of identification:
Black: power supply
Blue: connection to RHM and 4-20mA pressure sensor (if present)
Green: I/O signals
The standard plugs are a push-in wire connection type. Solid wires and stranded wires with end
sleeves can be connected by simply pushing the wire into the opening. For connecting stranded
wires without prepared ends (crimp ferrules, etc.), it may be necessary to press down and hold
the cable release operator while inserting the wire.
To disconnect a wire, simply press down the cable release operator and withdraw the wire while
it is held down.
Other types of connector, such as those with screw terminals may be available and can also be
used.
Interconnecting RHE/RHM
Only interconnecting cable (ARHE-Cx cable) supplied by Rheonik should be used to connect an
RHE to an RHM. Cable not supplied by Rheonik may lead to a poor performance of the Coriolis
mass flow meter.
Table 2: Overview RHM electrical connection types
RHM electrical
connection type
Junction box / terminals
Section
JM, SM
aluminium, stainless steel / 11
3.2.1.1
TM
- / PTFE cable with 9 wires + shield
3.2.1.2
JO
aluminium / 12
3.2.1.3
legacy type
aluminium, stainless steel / 9
3.2.1.4

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3.2.1.1 RHM Electrical Connection Type JM & SM (11 Terminals)
Table 3: RHE26/27 Wiring Plan for RHM Connection Types JM, SM & SC
RHM Terminal
Cable
RHE2x Terminal
No.
Name
Wire
Color
Function
No.
Name
1
DRV H
Brown
Drive Coil high
1
DrvH
2
DRV L
Blue
Drive Coil low
2
DrvL
3
PT P
Red
Temperature Sensor Pipe
3
PtP
4
PT G
Pink
Temperature Sensors GND
4
PtG
5
PT T
Orange
Temperature Sensor Torsion
5
PtT
6
PUA H
Yellow
Pick Up Coil A high
6
PkAH
7
PUA L
Green
Pick Up Coil A low
7
PkAL
8
PUB L
Grey
Pick Up Coil B low
8
PkBL
9
PUB H
White
Pick Up Coil B high
9
PkBH
10 1
PE
(yel/grn)
Shield
10
PE
11 1
PE C
(yel/grn)
1The RHM has 2 terminals for the connection of the cable shield. One is connected directly to PE, the other via a
1nF capacitor (PE C).
The best protection against RF EMI is achieved if the cable shield is connected at both ends. In installations with a
long interconnecting cable between RHE and RHM, significant potential difference between the PE at the RHE and
the PE at the RHM may occur. Connecting the shield to PE at both ends might lead to undesirable current flow in
the shield. In situations where a high potential difference is present between the RHE and RHM, we recommend
grounding via the PE C terminal on the RHM side.
Figure 1: RHE26/27 Wiring with RHM Connection Types JM, SM & SC
Upon power up, if the RHE indicates an error and the temperature measurement on the bottom
right of the display shows “ -.--°C/°F ” please check the temperature measurement configuration
setting in the RHE (section 4.5).
The correct temperature measurement configuration setting for an RHM with connection type
JM or SM is “7”, while the configuration setting for RHM connection type SC is “1”.
RHM RHE26/27

RHE26/27 Installation & Startup Guide –Doc. No. 8.2.1.06 –Ver. 1.40
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Figure 2: RHE26/27
Wiring with RHM
Connection Type TM
3.2.1.2 RHM Electrical Connection Type TM (PTFE Cable)
Table 4: RHE26/27 Wiring Plan for RHM Connection Type TM
1The shield of the cable is connected internally to the housing of the RHM. If there is a
risk of a significant potential difference between the housing of the RHM and the PE
terminal of the RHE, the shield should be connected to the RHE PE connection via a 1nF
capacitor. Alternatively, a separate cable can be run for potential equalization between
the RHM case and the RHE and the shield left both unconnected and isolated at the RHE
or terminated to the PE connection via a 1nF capacitor.
Upon power up, if the RHE indicates an error and the temperature measurement on the bottom
right of the display shows “ -.--°C/°F ” please check the temperature measurement configuration
setting in the RHE (section 4.5).
The correct temperature measurement configuration setting for an RHM with connection type
TM is “7”.
Cable
RHE2x Terminal
No.
Wire Color
Function
No.
Name
1
Brown
Drive Coil high
1
DrvH
2
Blue
Drive Coil low
2
DrvL
3
Red
Temp. Sensor Pipe
3
PtP
4
Pink
Temp. Sensors GND
4
PtG
5
Orange
Temp. Sensor Torsion
5
PtT
6
Yellow
Pick Up Coil A high
6
PkAH
7
Green
Pick Up Coil A low
7
PkAL
8
Grey
Pick Up Coil B low
8
PkBL
9
White
Pick Up Coil B high
9
PkBH
10 1
(yel/grn)
Shield
10
PE

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3.2.1.3 RHM Electrical Connection Type JO (12 Terminals)
Table 5: RHE26/27 Wiring Plan for RHM Connection Types JO
RHM Terminal
Cable
RHE2x Terminal
No.
Name
Wire Color
Function
No.
Name
1
DRIVE +
Brown
Drive Coil high
1
DrvH
2
DRIVE -
Blue
Drive Coil low
2
DrvL
3
PT1 Pipe Supply
Red
Temperature Sensor Pipe
3
PtP
4
PT1 Pipe Sense
Pink
Temperature Sensors GND
4
PtG
5
PT 1/2 Common
-
-
-
-
6
Pick-Up left+
Yellow
Pick Up Coil A high
6
PkAH
7
Pick-Up left -
Green
Pick Up Coil A low
7
PkAL
8
Pick-Up right-
Grey
Pick Up Coil B low
8
PkBL
9
Pick-Up right+
White
Pick Up Coil B high
9
PkBH
10 1
GND
(yel/grn)
Shield
10
PE
11
PT2 Tor. Supply
Orange
Temperature Sensor Torsion
5
PtT
12
PT2 Tor. Sense
-
-
-
-
1The shield of the cable is connected through terminal 10 to the housing of the RHM. If there is a risk of a significant
potential difference between the housing of the RHM and the PE terminal of the RHE, the shield should be connected
to the RHE PE connection via a 1nF capacitor. Alternatively, a separate cable can be run for potential equalization
between the RHM case and the RHE and the shield left both unconnected and isolated at the RHE or terminated to
the PE connection via a 1nF capacitor.
Figure 3: RHE26/27 Wiring with RHM Connection Types J6 & JO
Upon power up, if the RHE indicates an error and the temperature measurement on the bottom
right of the display shows “ -.--°C/°F ” please check the temperature measurement configuration
setting in the RHE (section 4.5).
The correct temperature measurement configuration setting for an RHM with connection type
JO is “3”.
RHM RHE26/27

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3.2.1.4 Legacy RHM Sensors (9 Terminals)
Table 6: RHE26/27 Wiring Plan for RHM legacy version
RHM Terminal
Cable
RHE2x Terminal
No.
Wire Color
Function
No.
Name
1
Brown
Drive Coil high
1
DrvH
2
Blue
Drive Coil low
2
DrvL
3
Red
Temperature Sensor Pipe Supply
3
PtP
4
Pink
Temperature Sensor Pipe Sense
4
PtG
5
Orange
Temperature Sensors Common
5
PtT
6
Yellow
Pick Up Coil A high
6
PkAH
7
Green
Pick Up Coil A low
7
PkAL
8
Grey
Pick Up Coil B low
8
PkBL
9
White
Pick Up Coil B high
9
PkBH
Screw Term 1
(yel/grn)
Shield
10
PE
1The shield of the cable is connected to the housing of the RHM using a screw terminal in the junction box. If there
is a risk of a significant potential difference between the housing of the RHM and the PE terminal of the RHE, the
shield should be connected to the RHE PE connection via a 1nF capacitor. Alternatively, a separate cable can be run
for potential equalization between the RHM case and the RHE and the shield left both unconnected and isolated at
the RHE or terminated to the PE connection via a 1nF capacitor.
Upon power up, if the RHE indicates an error and the temperature measurement on the bottom
right of the display shows “ -.--°C/°F ” please check the temperature measurement configuration
setting in the RHE (section 4.5).
The correct temperature measurement configuration setting for an RHM legacy sensor is “1”.
Figure 4: RHE26/27 Wiring with RHM legacy sensors
RHM RHE26/27