Spirax Sarco M850-W Series User manual

IM-P333-27 EMM Issue 7
1
© Copyright 2017
Printed in Poland
IM-P333-27
EMM Issue 7
3331051/7
M850-W and M850-P
Flow Computers
Quickstart Guide
2. Safety
information
3. General product
and delivery
information
7. Technical
information
8. Mechanical
installation
9. Electrical
installation
10. Commissioning
Appendix
Please note that this is the
'Quickstart Guide' and that all
relevant Sections for this product
are contained in the main
Installation and Maintenance
Instructions IM-P333-26.
M850-P-x
M850-W-x

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Certain computer programs contained in this product
[or device] were developed by Spirax-Sarco Limited ('the
Work(s)').
Copyright © Spirax-Sarco Limited 2017
All Rights Reserved
Spirax-Sarco Limited grants the legal user of this product
(or device) the right to use the Work(s) solely within the
scope of the legitimate operation of the product (or device).
No other right is granted under this licence. In particular
and without prejudice to the generality of the foregoing,
the Work(s) may not be used, sold, licensed, transferred,
copied or reproduced in whole or in part or in any manner
or form other than as expressly granted here without the
prior written consent of Spirax-Sarco Limited.
Manufacturer
Spirax Sarco Limited
Runnings Road
Cheltenham
GL51 9NQ
www.spiraxsarco.com

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Safe operation of this product can only be guaranteed
if it is properly installed, commissioned, used and
maintained by qualified personnel (see the following
sections)in compliance withtheoperatinginstructions.
General installation and safety instructions for pipeline
and plant construction, as well as the proper use of
tools and safety equipment must also be complied with.
In the UK, your attention is drawn to IEE Regulations (BS 7671).
Elsewhere, other regulations will normally apply.
All wiring materials and methods shall comply with relevant EN
and IEC standards where applicable.
This product must be installed indoors only
Warning
This product is designed and constructed to withstand
the forces encountered during normal use. Use of
the product other than as a steam flow computer, or
failure to install the product in accordance with these
Instructions, product modifications or repair could:
-Cause damage to the product / property.
-Cause injury or fatality to personnel.
-Invalidate the marking.
Isolate the mains supply before opening the product as
hazardous voltages may be exposed.
These instructions must be stored in a safe place near the
installation of the steam flow computer at all times.
2. Safety information

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Warning
This product complies with the requirements of the
following directives and harmonized standards:
Low Voltage Directive by meeting the standards of:
-EN 61010-1 Safety requirements for electrical equipment for
measurement, control and laboratory use.
Electromagnetic Compatibility Directive by meeting the
standards of:
-Immunity EN 61326-1 Table 2
-Radiated and conducted emissions EN 61326-1 Group 1
Class B.
The product may be exposed to interference above the limits
of EN 61326 if:
-The product or its wiring is located near a radio transmitter.
-Excessive electrical noise occurs on the mains supply. Power
line protectors (ac) should be installed if mains supply noise
is likely. Protectors can combine filtering, suppression, surge
and spike arrestors.
-Cellular telephones and mobile radios may cause interference
if used within approximately 1 metre (39") of the product or
its wiring. The actual separation distance necessary will
vary according to the surroundings of the installation and
the power of the transmitter.
2.1 Intended use
i) Check that the product is suitable for use with the application.
ii) Determine the correct installation situation.
iii) Spirax Sarco products are not intended to withstand external
stresses that may be induced by any system to which they are
fitted. It is the responsibility of the installer to consider these
stresses and take adequate precautions to minimise them.
2.2 Access
Ensure safe access and if necessary a safe working platform
(suitably guarded)before attempting to work on the product.
2.3 Lighting
Ensure adequate lighting, particularly where detailed or intricate
work is required.

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The symbols, used on the product, mean:
Equipment protected
throughout by
double insulation
or reinforced
insulation.
Functional earth
(ground) terminal, to
enable the product
to function correctly.
Not used to provide
electrical safety.
Caution, risk of
electric shock.
Caution, risk of
danger, refer to
accompanying
documentation.
Optically isolated
current source or
sink.
Caution,
Electrostatic
Discharge (ESD)
sensitive circuit.
Do not touch or
handle without
proper electrostatic
discharge
precautions.
ac - alternating
current
dc - direct current
2.4 Hazardous environment around the product
Consider: explosion risk areas, lack of oxygen (e.g. tanks, pits),
dangerous gases, extremes of temperature, hot surfaces, fire
hazard (e.g. during welding), excessive noise, moving machinery.
2.5 The system
Consider the effect on the complete system of the work proposed.
Will any proposed action (e.g. closing isolation valves, electrical
isolation) put any other part of the system or any personnel at risk?
Dangers might include isolation of vents or protective devices or
the rendering ineffective of controls or alarms. Ensure isolation
valves are turned on and off in a gradual way to avoid system
shocks.
2.6 Tools and consumables
Before starting work ensure that you have suitable tools and / or
consumables available.

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2.7 Protective clothing
Consider whether you and / or others in the vicinity require any
protective clothing to protect against the hazards of, for example,
chemicals, high / low temperature, radiation, noise, falling objects,
and dangers to eyes and face.
2.8 Permits to work
All work must be carried out or be supervised by a suitably
competent person.
Installation and operating personnel should be trained in the
correct use of the product according to the Installation and
Maintenance Instructions.
Where a formal 'permit to work' system is in force it must be
complied with. Where there is no such system, it is recommended
that a responsible person should know what work is going on and,
where necessary, arrange to have an assistant whose primary
responsibility is safety.
Post 'warning notices' if necessary.
2.9 Handling
Manual handling of large and / or heavy products may present a
risk of injury. Lifting, pushing, pulling, carrying or supporting
a load by bodily force can cause injury particularly to the back.
You are advised to assess the risks taking into account the task,
the individual, the load and the working environment and use the
appropriate handling method depending on the circumstances
of the work being done. Arrange suitable lifting gear if required.
2.10 Disposal
The M850 contains a battery. On disposal of the unit or
component, appropriate precautions should be taken in
accordance with Local / National regulations.
Unless otherwise stated in the Installation and Maintenance
Instructions, with the exception of the battery, this product
is recyclable and no ecological hazard is anticipated with its
disposal providing due care is taken.
2.11 Returning products
Customers and stockists are reminded that under EC Health,
Safety and Environment Law, when returning products to
Spirax Sarco they must provide information on any hazards
and the precautions to be taken due to contamination residues
or mechanical damage which may present a health, safety or
environmental risk. This information must be provided in writing
including Health and Safety data sheets relating to any substances
identified as hazardous or potentially hazardous.

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3. General product and
delivery information
The M850 forms part of a flowmetering system and is used with the
Spirax Sarco range of flowmeters: Gilflo, ILVA, linear flowmeters and
orifice plate assemblies - See Section 4 'System overview' which
illustrates the complete system. Depending on the application, it may
also be supplied with a differential pressure transmitter, pressure
transmitter and / or a temperature transmitter.
This Quickstart Guide will enable the rapid connection and
commissioning of the flowmetering system - All the details for this
are displayed in a simple and easy to read format.
Warning: This Guide is not intended as a substitute for the full
Installation and Maintenance Instructions IM-P333-26 that needs to
be read by the person responsible for installing the unit.
3.1 Equipment delivery, handling and storage
Factory shipment
Prior to shipment, the Spirax Sarco M850 is tested, calibrated and
inspected to ensure proper operation.
Receipt of shipment
Each carton should be inspected at the time of delivery for
possible external damage. Any visible damage should be recorded
immediately on the carrier's copy of the delivery slip. Each carton
should be unpacked carefully and its contents checked for damage:
Content of M850-P
1 x Flow computer M850-P
2 x Fixing clamps
1 x Printed Quickstart Guide
1 x USB (Full installation and
maintenance instructions,
configuration software)
1 x Set of terminal blocks
1 x Carton package
Content of M850-W
1 x Flow computer M850-W
1 x Printed Quickstart Guide
1 x USB (Full installation and
maintenance instructions,
configuration software)
1 x Carton package
If it is found that some items have been damaged or are missing,
notify Spirax Sarco immediately and provide full details. In addition,
damage must be reported to the carrier with a request for their on-site
inspection of the damaged item and its shipping carton.
Storage
If a flow computer is to be stored for a period prior to installation,
the environmental storage conditions should be at a temperature
between -30 °C and 70 °C (-22 °F and 158 °F), and between 5% and
95% relative humidity (non-condensing).
Before installing and connecting the power ensure there is no
condensation within the unit.

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3.2 Purpose
M850-P and M850-W devices are microprocessor based, universal
flow computers designed for measurement of:
- Flow and heat of steam and water according to IAPWS-IF97,
- Flow and heat of liquids other than water according to
characteristics provided by user,
- Flow of technical gases.
M850 flow computers can be used for three different applications
of an installation. The flow computers are designated for industrial
application in independent measurement applications and as
component of computerized measurement and control systems.
Implemented math functions enable calculation of flow and energy
balances. Extended functions of events and process values recording
make it possible to perform analysis of technological processes and
alarm conditions. Data recording of process values enables to use this
device in places beyond the reach of computer networks. Four output
relays provide with signaling and simple control functions. The flow
computers are a freely programmable in a broad range and enables
configuration of displaying the results depending on user’s needs.
Comprehensive programming menu allows simple configuration of
the instrument.
The device has a panel mount or wall mount construction for indoor
industrial applications.
Flow computers can work with the following flowmeters:
- Differential pressure devices ILVA and Gilflo type
- Differential pressure devices (orifices and nozzles) according to
iteration algorithm according to PN EN ISO 5167 standard (only
for water and steam)
- Differential pressure devices with approximation by square root
curve
- Volume flowmeters
- Mass flowmeters.
- Devices are available in six language versions: English, French,
German, Spanish, Portugese or Polish. Language change is
available from the device keyboard.

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3.3 Available options
Both versions of the M850 series have the same functions and are
available as follows:
- M850-P for panel mounting and is powered by 24 Vdc.
- M850-W for wall mounting and has been adapted to be powered
by 100 / 240 Vac.
Additionally, each version can be optionally equipped with one or two
analog outputs 4 - 20 mA. A UL approved version is available in the -W-
wall mounted version only.
Available versions:
M850 -x
-P Panel mounted version
-W Wall mounted version
-0 Option without analog 4 - 20 mA output
-1 Option with one analog 4 - 20 mA output
-2 Option with two analog 4 - 20 mA outputs
-UL UL approved version, available in -W- wall
mounted version only

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3.5 Assistance, service, returns and
decommissioning
3.5.1 For technical assistance
Contact your local Spirax Sarco representative. Details
can be found on order / delivery documentation or on our
web site: www.spiraxsarco.com
3.5.2 Service, Maintenance & Cleaning
No special servicing, preventative maintenance or inspection of the
product is required.
For cleaning, use a dry cloth. Do not use detergent or water.
3.5.3 Serviceable parts
There are no user serviceable parts, battery is good for the life of
the product.
3.5.4 Returning faulty equipment
Please return all items to your local Spirax Sarco representative.
Please ensure all items are suitably packed for transit (preferably in
the original cartons).
Please provide the following information with any equipment being
returned:
1. Your name, company name, address and telephone number,
order number and invoice and return delivery address.
2. Description and serial number of equipment being returned.
3. Full description of the fault or repair required.
4. If the equipment is being returned under warranty, please
indicate:
- Date of purchase.
- Original order number.
3.5.5 Decommissioning
If the product is to be decomissioned please pay full attention to all
sections of Section 2. Safety Information.

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7. Technical information
M850-W and M850-P
Itype (0 / 4-20 mA current loop analog inputs)
Transmitters supply
24 Vdc +10% / -20%; max 22 mA per
channel (protected with PTC 50 mA fuse
and 100 Ω resistor in series)
Maximum input
voltage ±
40 Vdc / SELV
RTD type
(3 analog inputs for temperature sensors)
Max input voltage ± 40 Vdc / SELV
PULS type inputs
(binary / pulse / frequency)
Maximum input
voltage ±
40 Vdc/ SELV
4-20 mA analog outputs
Maximum loop power
supply voltage 28 Vdc / SELV
Binary outputs
(M850-W-x and M850-W-x-UL)
Number of outputs 4
Type of outputs 3 pole (COM, NO, NC) electromechanical
relay
Contact rating
(resistive load) 3 A at 85 .. 250 Vac / 30 Vdc
Maximum switching
voltage 250 Vac / 125 Vdc
Maximum switching
power 750 VA / 90 W
Over voltage
category CAT III

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Binary outputs (M850-P-x)
Number of outputs 4
Type of outputs 2 pole Solid State Relay
Contact rating
(resistive load)
0.1 A at 24 Vac/dc (max 42 Vac or 60 Vdc) /
SELV
Maximum ON
resistance 20 Ω
Galvanic isolation
(optoisolation) 250 Vac continuous; 1 500 Vac for 1 minute
RS-485 / 422
Maximum bus
terminal voltages -8 V … +13 V / SELV
Ethernet port
Connection type RJ-45 / SELV
Power supply
(M850-W-x and M850-W-x-UL)
Rated supply voltage 100-240 Vac; 50 / 60 Hz
Supply voltage range 85 to 264 Vac; 47 .. 63 Hz
Power consumption Maximum 20 VA
Over voltage
category CAT III
Power supply (M850-P-x)
Rated supply voltage 24 Vdc (SELV and Limited Energy
Supply)
Supply voltage range 18 .. 36 Vdc
Power consumption Maximum 8 W

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Enclosure
(M850-W-x and M850-W-x-UL)
Protection class IP65 (not UL evaluated)
Enclosure (M850-P-x)
Protection class
(front / rear) IP65 / IP20 (not UL evaluated)
Environmental conditions
Ambient temperature 0 .. +55°C (32 .. 131°F)
Relative humidity 5 .. 95% (non-condensing)
Altitude ≤ 2000 m (6 562 ft) above sea level
Pollution degree
3 Panel version (when installed in an
enclosure)
3 Wall version
Electrical safety
EN 61010-1
UL 61010-1, 3rd Edition
CAN/CSA-C22.2 No. 61010-1, 3rd Edition
EMC
Immunity EN 61326-1 Table 2
Radiated and conducted emissions
EN61326-1 Group 1 Class B
Installation location Indoor use only

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8. Mechanical installaton
Note: Before actioning any installation observe the 'Safety
information' in Section 2.
M850
The M850 is available for wall mounting M850-W or for panel
mounting M 8 5 0 - P.
Note: All versions must be fitted away from sources of excessive heat,
electrical interference and from all areas liable to flooding.
Safety note - product specific
This product must be installed indoors only, in one of the following
ways:
Wall mounting
Fit cable glands / conduit with a minimum IP65 rating or install in
a clean dry room to provide a pollution degree 3 environment in
accordance with EN 60529 (Specification for degrees of protection
provided by enclosures - IP code).
-Any unused cable glands / conduit entries must be sealed with an
appropriate IP blind grommet.
Panel mounting
The panel mount version of the M850 is supplied with an IP65 rated
seal to be fitted between the flow computer and the panel it is to be
mounted into.
In addition a blanking panel (Figure 7) is also available to reduce
the apperature size if you are replacing an existing M800 with the new
M850 (also IP65 rated).
Fig. 7 Blanking panel

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8. Mechanical installaton
Environmental conditions
The flow computer should be located in an environment that minimises
the effects of heat, vibration, shock and electrical interference.
The flow computer should also be installed away from external
magnetic fields, such as those generated from electric motors and
large transformers.
Other considerations
Be sure to allow sufficient clearance for:
-Installation of conduit / wiring.
- Viewing of the display.
Fig. 8 Panel unit rear view
Minimum 10 cm
Minimum 10 cm
Minimum
10 cm
Minimum
10 cm
Enclosure wall

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8.1 Mounting instructions for the wall mounted
M850-W:
1. Using the dimensions shown below, drill 3 holes suitable for
accepting 5 mm (No.10) screws.
2. Remove the terminals enclosure cover to expose the bottom
mounting holes.
Dimensions (approximate in mm and inches) -
M850-W (non cULus version)
A B C D E F G H I J K L
2 57. 0 0
mm
5.00
mm
217. 0 0
mm
30.00
mm
10.60
mm
189.50
mm
10.00
mm
57.5 0
mm
26.00
mm
121.00
mm
242.00
mm
1.50
mm
10 .12 " 0.20" 8.54" 1.18 " 0.42" 7. 4 6 " 0.40" 2.26" 1.02 " 4.76" 9.53" 0.06"
3 x 5 mm
(0.20")
Mounting
points
F
A
C
K
J
D IH
E
G
B
D
D D
L

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Dimensions (approximate in mm and inches) -
M850-W (cULus version)
M N O P Q R S T U V W X Y
2 57. 0 0
mm
5.00
mm
217. 0 0
mm
21.00
mm
50.00
mm
39.00
mm
11.00
mm
61.00
mm
121.00
mm
242.00
mm
11.00
mm
189.50
mm
10.00
mm
10 .12 " 0.20" 8.54" 0.83" 1.97" 1.54" 0.43" 2.40" 4.76" 9.53" 0.43 7. 4 6 " 0.39"
3 x 5 mm
(0.20")
Mounting
points
X
M
O
V
U
Q TS
W
Y
N
P
R

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Bottom mounting eyelet (access through the terminal compartment)
Fig. 9
M850-W-x
Bottom mounting eyelet (access through the terminal compartment)
M850-W-x-UL

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4. Slide the top mounting lug over the proud screw.
5. Line up, and fit the screws to the bottom mounting holes.
6. Refit the terminals enclosure cover.
Note:
Before actioning any installation observe the 'Safety information'
in Section 2.
Fig. 10
3. Fix an M5 (No.10) screw to the surface for the top mounting. Leave
the head of the screw proud of the surface, just enough to allow
the top mounting lug of the M850 to slide over.
Mounting screw left proud of surface to slot top
mounting of M850 over.
Top mounting lug (external)

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8.2 Mounting instructions for the panel mounted
M850-P:
1. A rectangle aperture 186 mm (7 ") wide x 92 mm (3 ") high is
required to mount the panel mounted version of the M850 flow
computer.
2. Push the M850 through the aperture ensuring that the seal is
fitted correctly.
3. From the reverse side of the panel, using the mounting points on
the sides of the M850, assemble the fixing clamps to the body.
4. Carefully wind in the clamps using the screwdriver slots to tighten
the flow computers to the panel.
Fig. 11
Note: Screw clamps
removed for clarity
Fig. 12
Side view
Clamp screw Clamp screw
Bottom view