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saves cost from Sontay. Measures carbon dioxide, air quality, relative humidity, temperature ...

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The new Mater Dei Hospital

Case Study in Malta

Sontay provides Control System Sensors at new hospital in Malta ...

Sontay Malta Case Study The new Mater Dei Hospital

Water & Heat Metering Training

Training Day

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Wireless Sensing System

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Air Quality Must Be Measured

Building control systems

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MW Product Viewer

Products Metering

The 'Market Leader' for all Building Measurement and Control Peripherals

MW Water Meters, Integrators & Flow Sensors

MW-CF Flanged Cold Water Meters (non-continuous flow)

Features

Suitable for use with domestic water
Pulsed output
Low head loss

...........................................................................................................................................................................................

An Introduction to Flow Parts for Metering

Flow parts for water

denoted in the Sontay catalogue as ‘water meters’
Are used specifically for sanitary water only, i.e. water without additives or chemical treatment, and are designed for non-continuous flow, such as domestic cold and hot water supplies.

The total daily flow should not exceed 3 hours, over a 6 year period.
Volumetric flows higher than this can lead to increased wear in the bearings of the impellor, causing inaccuracies in reading.
Note also that water meters have a narrow fluid temperature range, typically between
0°C to +90°C for hot water meters and
0°C to +30°C for cold water meters.

Note: Because of these distinct differences, only flow parts designed specifically for heat metering should be used for heat metering applications. Although water meters can, in theory, be used for heat meter applications, Sontay cannot warranty water meters if used in this manner.

Specification
Meter:
Fluid temp. range:	Cold 0° to 30°C (safety margin 50°C)
	Hot 0 to 90°C (safety margin 120°C)
Body material:	GG25 Grey cast iron, epoxy coated
Counter:	7-Roller type
Max. working pressure:	16 bar
Flanges:	DIN 2501 PN16
Installation position:	Horizontal / vertical, dial upwards (preferred) or vertically
Conformity:	EN14154
MID:	Annex B, Annex D, Annex I & MI001

Pulsed output specification:
Switch type:	Reed switch proximity sensor
Contracts:	Volt free
Pulse value (per litre):	1, 10 or 100
Max. load current:	500mA
Max. switching voltage:	180Vdc
Max. contact rating:	10W
Connection type:	Flying lead
Lead length:	2 Meters

Technical Overview

The MW-F range of flanged meters incorporate unique “paddle wheels” which enable the meters to cover a very large measuring range with low head loss. The impellers that are mounted perpendicular to the flow. The impeller rotation speed increases with the water flow rate. The meters use a magnetic transmission system between the impeller and the totalising register to minimise drag and to enable the register to be total sealed from the water supply. All meters are fitted with a pulsed output reed switch.

Installation & Location

Flanged meters can be installed horizontally and vertically, that is, in horizontal, vertical, and inclined pipelines. The best measuring results can be obtained if the meter is installed in horizontal position with the counter “facing upwards”.

Water meters should always be fitted with a minimum of 3x pipe diameter upstream.

It is recommended as good practice to fit a removable filter element (strainer) before a water meter to protect the mechanism. Only clean water should be used that does not exceed the temperature specification of the meter. This is 30°C for cold meters and 90°C for hot meters.

Product Data Sheet

To download the product data sheet, please click the link below:

MW-F.pdf

News and press releases

No updates available for this product!

Sontay Contact

UK Sales Tel: +44 1732 861200
International Tel: +44 1732 861225
sales@sontay.com

Part code	Size	Litres /pulse	Qi (m3/h)	Qp (m3/h)	Qs (m3/h)	£
Cold Water Meters (Flanged connections)
MW-CF-50-B	50mm	100	0.35	15	90	249.60
MW-CF-65-B	65mm	100	0.45	25	120	295.00
MW-CF-80-B	80mm	100	0.8	40	150	345.00
MW-CF-80-C	80mm	1000	0.8	40	150	345.00
MW-CF-100-B	100mm	100	1.5	60	250	415.00
MW-CF-100-C	100mm	1000	1.5	60	250	415.00
MW-CF-125-C	125mm	1000	3	100	300	495.00
MW-CF-150-C	150mm	1000	3.5	150	350	577.00
MW-CF-200-C	200mm	1000	6.5	250	650	795.00
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Definitions

Qs, the upper limit of the flow-rate, is the highest flow-rate at which the heat meter shall function for short periods (< 1h / day; < 200 h / year), without the maximum permissible errors being exceeded.
Qp, the permanent flow-rate, is the highest flow-rate at which the heat meter shall function continuously without the maximum permissible errors being exceeded.
Qi, the lower limit of the flow-rate, is the lowest flow-rate above which the heat meter shall function without the maximum permissible errors being exceeded.

MW-CHM Compact Heat Meters

Heat energy is calculated by using a matched pair of high accuracy sensors to measure the difference between the forward and flow temperatures. The amount of water flowing through the circuit is measured by the water meter, and the microprocessor-controlled calculator then calculates the consumed heat energy from the temperature and flow data. The large, easy-to-read display shows the energy used. Additional measurement and instrument data can be easily displayed by scanning the display loops. The integrated non-volatile E2PROM automatically stores the meter data once a day. It is possible to view the last 18 monthly values from the display.

Features

Compact design
Simple operation
Pulsed output
Measures heating or cooling

Specification
Water Meter
Temperature range:	10 to 90°C
Nominal pressure:	16 bar
Installation:	Return
Cable length to heat meter:	50cm
Nominal diameter (DN):	15mm or 20mm
Nominal flow (qp):	15mm 0.6 or 1.5m3/h
	20mm 2.5m3/h
External thread:	15mm G3⁄4"
	20mm G1"
Temperature Sensors
Sensor element:	PT500
Sensor:	lead length: 1.5m
	Diameter: 5mm
Installation:	Flow 3⁄4" or 1" ball valve with integral pocket
Temperature Sensors
Temperature range:	1 to 130°C
Display type:	8 digit LCD
Energy display:	MWh
Data storage:	Non-volatile memory, once daily
Battery life:	>6 years
Output pulse:	Max. operating voltage 30Vdc, 20mA max
	Pulse width 400-600m/s
Conformity:	MID (Annex B & Annex D)
Measurement accuracy:	Class 3 (MID Annex MI-004)
Ambient temperature:	5 to 55°C
Protection:	IP54
Weight:	1.02kg

Technical Overview

Installation

Sontay Ltd recommends to use direct temperature measurement and not to use immersion sleeves. The maximum heating water temperature at the flow sensor may not exceed 90ºC. Make sure no heating water escapes during installation – this can cause burns!

The current laws and regulations have to be observed, especially EN 1434 part 1+6. Devices with M-Bus, the general rules of technology and the respective regulations for electrical installations have to be followed. The installation has to be done by qualified professional personnel. Read this instructions carefully right up to the end before starting to mount the device.

Product Data Sheet

To download the product data sheet, please click the link below:

MW-CHM.pdf

News and press releases

No updates available for this product!

Sontay Contact

UK Sales Tel: +44 1732 861200
International Tel: +44 1732 861225
sales@sontay.com

Part code	Description	£
MW-CHM-1	Meter with 0.6m3/h nominal flow	244.00
MW-CHM-2	Meter with 1.5m3/h nominal flow	246.00
MW-CHM-3	Meter with 2.5m3/h nominal flow	263.00
Output Options (add type to above code)
-A	Pulsed output	00.00
-B	M-Bus output	+21.00
Replacement Items
MW-BV-1	¾” ball valve c/w pocket	11.00
MW-BV-2	1” ball valve c/w pocket	17.00
The default location of the flow sensor is in the return. If the meter is to be fitted in the flow please advise at time of order.
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MW-CS Screwed Cold Water Meters (non-continuous flow)

Features

Inbuilt water strainer
Complete with couplings
Suitable for use with domestic water
Pulsed output

...........................................................................................................................................................................................

An Introduction to Flow Parts for Metering

Flow parts for water

The total daily flow should not exceed 3 hours, over a 6 year period.
Volumetric flows higher than this can lead to increased wear in the bearings of the impellor, causing inaccuracies in reading.
Note also that water meters have a narrow fluid temperature range, typically between
0°C to +90°C for hot water meters and
0°C to +30°C for cold water meters.

Specification
Meter:
Fluid temp. range:	Cold 0° to 30°C (safety margin 50°C)
	Hot 0° to 90°C (safety margin 120°C)
Body material:	Epoxy resin coated brass to DIN 50 930 part 6
Counter:	5-Roller type
Max. working pressure:	16 bar
Installation position:	Meter horizontal / dial upwards
Conformity:	EN14154
MID:	Annex B, Annex D, Annex I & MI001

Pulsed output specification:
Switch type:	Reed switch proximity sensor
Contracts:	Volt free
Pulse value (per litre):	10 or 100
Max. load current:	500mA
Max. switching voltage:	180Vdc
Max. contact rating:	10W
Connection type:	Flying lead
Lead length:	2 Meters

Technical Overview

The MW-CS range of screwed meters incorporate multi-jet wheel impellers that are mounted perpendicular to the flow. The impeller rotation speed increases with the water flow rate. The meters use a magnetic transmission system between the impeller and the totalising register to minimise drag and to enable the register to be total sealed from the water supply. All meters are fitted with a pulsed output reed switch.

Installation & Location

The best measuring results are achieved with multi-jet meters when they are installed horizontally. This means that the counter faces up. In this position, the counters bearings are best discharged. The reduced friction produces the lowest starting flows.

Water meters should always be fitted with a minimum of 5x pipe diameter both up and downstream. For example, a 2” (DN50) water meter would have 10” (250mm) either side of the meter as straight pipe. This is to ensure accurate reading by reducing water turbulence. At higher pressures (above 8 bar), this should be increased to 10x pipe diameter.

It is recommended as good practice to fit a removable filter element (strainer) before a water meter to protect the mechanism.

Only clean water should be used that does not exceed the temperature specification of the meter. This is 30°C for cold meters and 90°C for hot meters.

Product Data Sheet

To download the product data sheet, please click the link below:

MW-S.pdf

News and press releases

No updates available for this product!

Sontay Contact

UK Sales Tel: +44 1732 861200
International Tel: +44 1732 861225
sales@sontay.com

Part code	Size	Litres /pulse	Qi (m3/h)	Qp (m3/h)	Qs (m3/h)	£
Cold Water Meters (Screw connections)
MW-CS-15-A	½”	10	30	1.5	3	51.45
MW-CS-15-B	½”	100	30	1.5	3	51.45
MW-CS-20-A	¾”	10	50	2.5	5	57.50
MW-CS-20-B	¾”	100	50	2.5	5	57.50
MW-CS-25-A	1”	10	70	3.5	7	84.25
MW-CS-25-B	1”	100	70	3.5	7	84.25
MW-CS-32-A	1¼”	10	120	6	12	97.65
MW-CS-32-B	1¼”	100	120	6	12	97.65
MW-CS-40-B	1½”	100	200	10	20	175.45
MW-CS-50-B	2”	100	450	15	30	195.00
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MW-F Flow Sensors for Measuring Volume Flow in Heating & Cooling Systems

MW-F flow sensors (DN50 to 200) can be installed horizontally or vertically. They are characterised by extremely low starting flows with high measuring accuracy and excellent measuring stability – even in the most extreme of situations. This applies for the upper, as well as the lower measuring ranges.

Features

Reinforced bearings
High measuring stability
Compatible with MW-MD integrator

...........................................................................................................................................................................................

An Introduction to Flow Parts for Metering

Flow parts for heating

denoted in the Sontay catalogue as ‘flow sensors’
Can be used with chemically treated water, and are designed for continuous or very high duty cycle flow conditions typically found in hot water heating systems. Flow sensors have a wider fluid temperature range than water meters, typically between 0°C to +120°C.

Specification
Meter:
Fluid temp. range:	10 to 120°C (safety margin 130°C)
Body material:	GG25 Grey cast iron, epoxy coated
Flanges:	DIN2501 PN16
Max. working pressure:	16 bar
Measurement accuracy:	Class 3 (MID Annex MI-004)
Conformity:	MID (Annex B & Annex D)

Pulsed output specification:
Switch type:	Reed switch proximity sensor
Contracts:	Volt free
Max. load current:	500mA
Max. switching voltage:	180Vdc
Max. contact rating:	10W
Connection type:	Flying lead
Lead length:	2 Meters

Technical Overview

The MW-FS range of flow sensors are meters especially designed for the special conditions in heating and cooling circuits. The pulse transmission takes place via the tried and tested reed-contact and is thus, compatible with the MW-MD.

MW-FS flow sensors (DN50 to 200) can be installed horizontally or vertically. They are characterised by extremely low starting flows with high measuring accuracy and excellent measuring stability – even in the most extreme of situations. This applies for the upper, as well as the lower measuring ranges.

Installation & Location

Water meters should always be fitted with a minimum of 3x pipe diameter upstream.

Product Data Sheet

To download the product data sheet, please click the link below:

MW-FS.pdf

News and press releases

No updates available for this product!

Sontay Contact

UK Sales Tel: +44 1732 861200
International Tel: +44 1732 861225
sales@sontay.com

Part code	Size	Litres /pulse	Qi (m3/h)	Qp (m3/h)	Qs (m3/h)	£
MW-F-50	50mm	100	0.6	15	60	439.00
MW-F-65	65mm	100	1	25	60	523.00
MW-F-80	80mm	100	3.2	40	90	628.00
MW-F-100	100mm	100	2	60	180	733.00
MW-F-125	125mm	1000	3	100	250	796.00
MW-F-150	150mm	1000	8	150	300	1195.00
MW-F-200	200mm	1000	10	250	500	1573.00
To the Online Ordering Tool

MW-HF Flanged Hot Water Meters (non-continuous flow)

Features

Reinforced bearings
High measuring stability
Compatible with MW-MD integrator

...........................................................................................................................................................................................

An Introduction to Flow Parts for Metering

Flow parts for heating

Specification
Meter:
Fluid temp. range:	0 to 90°C (safety margin 120°C)
Body material:	GG25 Grey cast iron, epoxy coated
Flanges:	DIN2501 PN16
Max. working pressure:	16 bar
Conformity:	EN14154
MID:	Annex B, Annex D, Annex I & MI001

Pulsed output specification:
Switch type:	Reed switch proximity sensor
Contracts:	Volt free
Max. load current:	500mA
Max. switching voltage:	180Vdc
Max. contact rating:	10W
Connection type:	Flying lead
Lead length:	2 Meters

Technical Overview

Installation & Location

Water meters should always be fitted with a minimum of 3x pipe diameter upstream. For example, a 65mm water meter would have 195mm before the meter as straight pipe. This is to ensure accurate reading by reducing water turbulence. Ideally a straight pipe section of at least 2 x DN is required down stream.

Product Data Sheet

To download the product data sheet, please click the link below:

MW-F.pdf

News and press releases

No updates available for this product!

Sontay Contact

UK Sales Tel: +44 1732 861200
International Tel: +44 1732 861225
sales@sontay.com

Part code	Size	Litres /pulse	Qi (m3/h)	Qp (m3/h)	Qs (m3/h)	£
Hot Water Meters (Flanged connections)
MW-HF-50-B	50mm	100	0.35	15	90	387.00
MW-HF-65-B	65mm	100	0.45	25	120	442.00
MW-HF-80-B	80mm	100	0.8	40	150	495.00
MW-HF-80-C	80mm	1000	0.8	40	150	495.00
MW-HF-100-B	100mm	100	1.5	60	250	553.00
MW-HF-100-C	100mm	1000	1.5	60	250	553.00
MW-HF-125-C	125mm	1000	3	100	300	641.00
MW-HF-150-C	150mm	1000	3.5	150	350	733.00
MW-HF-200-C	200mm	1000	6.5	250	650	857.00
To the Online Ordering Tool

MW-HS Screwed Hot Water Meters (non-continuous flow)

Features

Inbuilt water strainer
Complete with couplings
Suitable for use with domestic water
Pulsed output

...........................................................................................................................................................................................

An Introduction to Flow Parts for Metering

Flow parts for heating

Specification
Meter:
Fluid temp. range:	Cold 0° to 30°C (safety margin 50°C)
	Hot 0° to 90°C (safety margin 120°C)
Body material:	Epoxy resin coated brass to DIN 50 930 part 6
Counter:	5-Roller type
Max. working pressure:	16 bar
Installation position:	Meter horizontal / dial upwards
Conformity:	EN14154
MID	Annex B, Annex D, Annex I & MI001

Pulsed output specification:
Switch type:	Reed switch proximity sensor
Contracts:	Volt free
Pulse value (per litre):	10 or 100
Max. load current:	500mA
Max. switching voltage:	180Vdc
Max. contact rating:	10W
Connection type:	Flying lead
Lead length:	2 Meters

Technical Overview

Installation & Location

It is recommended as good practice to fit a removable filter element (strainer) before a water meter to protect the mechanism.

Only clean water should be used that does not exceed the temperature specification of the meter. This is 30°C for cold meters and 90°C for hot meters.

Product Data Sheet

To download the product data sheet, please click the link below:

MW-S.pdf

News and press releases

No updates available for this product!

Sontay Contact

UK Sales Tel: +44 1732 861200
International Tel: +44 1732 861225
sales@sontay.com

Part code	Size	Litres /pulse	Qi (m3/h)	Qp (m3/h)	Qs (m3/h)	£
Hot Water Meters (Screwed connections)
MW-HS-15-A	½”	10	30	1.5	3	80.00
MW-HS-15-B	½”	100	30	1.5	3	80.00
MW-HS-20-A	¾”	10	50	2.5	5	89.00
MW-HS-20-B	¾”	100	50	2.5	5	89.00
MW-HS-25-A	1”	10	75	3.5	7	108.00
MW-HS-25-B	1”	100	75	3.5	7	108.00
MW-HS-32-A	1¼”	10	120	6	12	127.50
MW-HS-32-B	1¼”	100	120	6	12	127.50
MW-HS-40-B	1½”	100	200	10	20	299.00
To the Online Ordering Tool

MW-MD Heat Meter Integrator

The new MW-MD range of Heat Meter Integrators uses the latest innovative technology to calculate heat usage from heating and cooling systems. They are for use with mechanical flow parts. With its dynamic measuring cycle even the smallest energy consumptions are reliably collected. The large multifunction display permanently shows the heat consumption total, and by using the button it is possible to scroll through the display to show all data.

Features

Simply operation
Integral wall and DIN-rail mounting bracket
Pulsed or M-Bus output options
Measures heating or cooling and heat/cooling

Specification
Temp. range:	1 to 150°C
Temp. diff:	3 to 120K
Battery life:	6 years (optional 11 year)
Display:	Multifunction 8-digit + characters LCD
Output pulse:	30Vdc max. @ 20mA
Pulse duration:	400m/s <TP <600m/s
M-Bus Baud rate:	2400
Sensor type:	PT500 Matched pair
Pocket thread:	1⁄2" BSP
Conformity:	EN1434, MID Annex I M1/E1 & Annex MI004
Ambient range:	Temperature 5 to 55°C
	RH 95% non-condensing
Dimension:	106 x 54 x 120mm (H x L x W)
Protection:	IP54
Weight:	500g

Technical Overview

The MW-MD range of Heat Meter Integrators uses the latest innovative technology to calculate heat usage from heating and cooling systems. They are for use with mechanical flow parts. With its dynamic measuring cycle even the smallest energy consumptions are reliably collected. The large multifunction display permanently shows the heat consumption total, and by using the button is it possible to scroll through the display to show all data.

Installation

Safety instructions
The installation has to be done by qualified personnel. Read the instructions carefully right up to the end before starting to mount the device. The current laws and regulations have to be observed, especially EN 1434 part 1+6. At devices with communication interfaces or mains supply the general technical rules and the correspondent regulations have to be followed. While demounting flow sensors and temperature sensors care should be taken to ensure that no heating water escapes from the pipe – this can cause burns! Close valves and release pressure before installation.

Installation heat calculator
Sontay recommends to mount the calculator on the wall. Do not mount the device at the pipe or attach it directly on the flow sensor. The mounting adapter at the backside of the calculator can be used for DIN-rail mounting or “reverse” for wall mounting. For wall mounting attach the adapter with at least two screws to the wall and clip the calculator on it. For rail mounting lift the adapter a little bit, place the calculator on the rail and push the adapter back until it locks.

Connection sensors
The mounting of the temperature sensors should be done symmetrical with direct immersion. If immersion sleeves are used they have to be checked for conformity to MID and have to be marked accordingly. The installation of immersion sleeves has to be done according to DIN EN 1434-2.

Connection flow sensor
The total length of the wire between flow sensor and calculator should not exceed 10 m. Mind the polarity at electronic flow sensors.

Product Data Sheet

To download the product data sheet, please click the link below:

MW-MD.pdf

News and press releases

No updates available for this product!

Sontay Contact

UK Sales Tel: +44 1732 861200
International Tel: +44 1732 861225
sales@sontay.com

Part code	Description	£
MW-MD	Heat Meter Integrator (build unit with following options)	00.00
Output Module (add type to above code)
-P	Pulsed output	185.00
-M	M-Bus	215.00
Pockets & PT500 Temp. Sensor (add type to above code)
-A	45mm, pocket sensor pair – 1.5m cable	+55.00
-B	105mm, pocket sensor pair – 3m cable	+74.75
-C	105mm, pocket sensor pair – 10m cable	+143.00
-D	140mm, pocket sensor pair – 3m cable	+93.00
-E	140mm, pocket sensor pair – 10m cable	+155.00
System Type (add type to above code)
-4	Heating system	00.00
-5	Cooling system	00.00
-6	Heat/cooling system	+12.00
Accessory
MW-BATTERY	Optional 11 year battery (only available when purchasing MW-MD, not avaiable as a seperate item)	19.25
Replacement Items
MW-PKT-1	45mm stainless steel pockets (pair)	31.00
MW-PKT-2	105mm stainless steel pockets (pair)	49.00
MW-PKT-3	140mm stainless steel pockets (pair)	51.00
*Typical order code:* MW-MD-P-B-5 ➡ Heat Meter Integrator with pulsed output, 105mm pocket sensor pair with 3m cable, for a cooling system.
The default location of the flow sensor is in the return. If the meter is to be fitted in the flow please advise at time of order.
To the Online Ordering Tool

Sontay Flow Sensors for Measuring Volume Flow in Heating & Cooling Systems

MW-MJx Flow Sensors for Measuring Volume Flow in Heating & Cooling Systems

MW-MJ flow sensors (DN20 to 40) have proven themselves for use with heavier flows. They are available for horizontal installation positions. The MW-MJR (riser pipe) and MW-MJD (down pipe) meters have the advantage for vertical piping. Due to the low bearing load, this results in improvements in the long-term stability of measuring results.

Features

Reinforced bearings
High measuring stability
Compatible with MW-MD integrator

...........................................................................................................................................................................................

An Introduction to Flow Parts for Metering

Flow parts for water

The total daily flow should not exceed 3 hours, over a 6 year period.
Volumetric flows higher than this can lead to increased wear in the bearings of the impellor, causing inaccuracies in reading.
Note also that water meters have a narrow fluid temperature range, typically between
0°C to +90°C for hot water meters and
0°C to +30°C for cold water meters.

Specification
Temperature range:	10 to 120°C (safety margin 130°C)
Max. operating pressure:	PN16
Measurement accuracy:	Class 3 (MID Annex MI-004)
Conformity:	MID (Annex B & Annex D)
Connections:	MW-SJ & MW-MJ types Screwed
	MW-F types Flanged
Materials:	Screwed Brass
	Flanged Cast iron
Weight:	47kg max.

Technical Overview

The MW-MJ range of flow sensors are meters especially designed for the special conditions in heating and cooling circuits. The pulse transmission takes place via the tried and tested reed-contact and is thus, compatible with the MW-MD. The special construction and the material design guarantee long-term measuring stability and high reliability. All of the flow sensors are designed for temperatures up to 120°C with safety up to 130°C. MW-MJ flow sensors (DN20 to 40) have proven themselves for use with heavier flows. They are available for horizontal installation positions. The MW-MJR (riser pipe) and MW-MJD (down pipe) meters have the advantage for vertical piping. Due to the low bearing load, this results in improvements in the long-term stability of measuring results.

Installation & Location

Water meters should always be fitted with a minimum of 3x pipe diameter upstream.

For example, a 65mm water meter would have 195mm before the meter as straight pipe. This is to ensure accurate reading by reducing water turbulence. Ideally a straight pipe section of at least 2 x DN is required down stream. It is recommended as good practice to fit a removable filter element (strainer) before a water meter to protect the mechanism.

Product Data Sheet

To download the product data sheet, please click the link below:

MW-MJx.pdf

News and press releases

No updates available for this product!

Sontay Contact

UK Sales Tel: +44 1732 861200
International Tel: +44 1732 861225
sales@sontay.com

Part code	Size	Litres /pulse	Qi (m3/h)	Qp (m3/h)	Qs (m3/h)	£
Horizontal Types
MW-MJ-20A	¾”	10	30	1.5	3	154.00
MW-MJ-20B	¾”	10	50	2.5	5	154.00
MW-MJ-25A	1”	10	65	3.5	7	221.00
MW-MJ-25B	1”	10	90	6	12	225.00
MW-MJ-32	1¼”	10	90	6	12	229.00
MW-MJ-40	1½”	10	160	10	20	271.00
Vertical Riser Pipe Types
MW-MJR-20	¾”	10	30	1.5	3	199.02
MW-MJR-25A	1”	10	65	3.5	7	260.00
MW-MJR-25B	1”	10	90	6	12	260.00
MW-MJR-32	1¼”	10	90	6	12	266.00
MW-MRJ-40	1½”	10	160	10	30	390.00
Vertical Down Pipe Types
MW-MJD-20	¾”	10	30	1.5	3	237.00
MW-MJD-25A	1”	10	65	3.5	7	283.00
MW-MJD-25B	1”	10	90	6	12	283.00
MW-MJD-32	1¼”	10	90	6	12	288.00
MW-MJD-40	1½”	10	160	10	30	398.00
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MW-SJ Flow Sensors for Measuring Volume Flow in Heating & Cooling Systems

Meters for measuring the volume flow in heating and cooling systems. The MW-SJ range of flow sensors are meters especially designed for the special conditions in heating and cooling circuits. The pulse transmission takes place via the tried and tested reed-contact and is thus, compatible with the MW-MD. The special construction and the material design guarantee long-term measuring stability and high reliability. All of the flow sensors are designed for temperatures up to 120°C with safety up to 130°C.

Features

Reinforced bearings
High measuring stability
Compatible with MW-MD integrator

...........................................................................................................................................................................................

An Introduction to Flow Parts for Metering

Flow parts for water

The total daily flow should not exceed 3 hours, over a 6 year period.
Volumetric flows higher than this can lead to increased wear in the bearings of the impellor, causing inaccuracies in reading.
Note also that water meters have a narrow fluid temperature range, typically between
0°C to +90°C for hot water meters and
0°C to +30°C for cold water meters.

Specification
Temperature range:	10 to 120°C (safety margin 130°C)
Max. operating pressure:	PN16
Measurement accuracy:	Class 3 (MID Annex MI-004)
Conformity:	MID (Annex B & Annex D)
Connections:	MW-SJ & MW-MJ types Screwed
	MW-F types Flanged
Materials:	Screwed Brass
	Flanged Cast iron
Weight:	47kg max.

Technical Overview

The MW-SJ range of flow sensors are meters especially designed for the special conditions in heating and cooling circuits. The pulse transmission takes place via the tried and tested reed-contact and is thus, compatible with the MW-MD.

The special construction and the material design guarantee long-term measuring stability and high reliability. All of the flow sensors are designed for temperatures up to 120°C with safety up to 130°C. MW-SJ flow sensors (DN15 & 20) are very compact devices used for flows of up to Qn 2.5. They can be installed horizontally or vertically."

Installation & Location

Water meters should always be fitted with a minimum of 3x pipe diameter upstream.

Product Data Sheet

To download the product data sheet, please click the link below:

MW-SJ.pdf

News and press releases

No updates available for this product!

Sontay Contact

UK Sales Tel: +44 1732 861200
International Tel: +44 1732 861225
sales@sontay.com

Part code	Size	Litres /pulse	Qi (m3/h)	Qp (m3/h)	Qs (m3/h)	£
MW-SJ-15A	½”	10	12	0.6	1.2	76.00
MW-SJ-15B	½”	10	30	1.5	3	76.00
MW-SJ-20	¾”	10	50	2.5	5	82.00
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MW-U Ultrasonic Flow Sensors & Integrator

Ultrasonic Flow Sensors have no moving parts in the volume flow which makes them almost wear free and noiseless. They measure the flow by using the transit time principle, one ultrasonic signal is launched in the flow direction and one against the flow direction.

The flow rate is conclude by the delay time measured and the information is then transmitted to the calculator by the way of electronic pulses. The calculator uses the latest innovative technology to calculate heat usage from heating systems. With its dynamic measuring cycle even the smallest energy consumptions are reliably collected.

The large multifunction display permanently shows the heat consumption total, and by using the button it is possible to scroll through the display to show all data.

Features

Simply operation
Long life ultrasonic flow meter
Integral wall and DIN-rail mounting bracket
Pulsed or M-Bus output options

Specification
Nominal flow rate:	qp 0.6 to qp 60m3/h
Max. static pressure:	Screwed 16 bar
	Flanged 25 bar
Body materials:	Brass
Temperature range:	Heating 10 to 130°C
	Cooling 10 to 50°C
Maximum temp:	50°C for 2000 h
Temperature diff:	3 to 120K
Supply:	3.6V Lithium battery
Battery life:	6 years (optional 11 year available upon request)
Display:	Multifunction 8-digit + characters LCD
Output pulse:	30Vdc max. @ 20mA
Pulse duration:	400m/s <TP <600m/s
M-Bus baud rate:	2400
Flow sensor cable:	1.5m to electronics, 2m to calculator
Sensor type:	PT500 Matched pair
Sensor lead lengths:	1.5m (screwed types), 3m (flanged types)
Sensor pockets:	45mm (screwed types), 105mm (flanged types)
Pocket thread:	1⁄2" BSP
Conformity:	MID (Annex B & Annex D)
Measurement accuracy:	Class 2 (MID Annex MI-004)
Ambient range:	Temp. 5 to 55°C
	RH 95% non-condensing
Protection:	IP54
Weight:	22.5kg max.

Technical Overview

Ultrasonic flow sensors have no moving parts in the volume flow, this makes them almost wear free and noiseless. They measure the flow by using the transit time principle, one ultrasonic signal is launched in the flow direction and one against the flow direction. The flow rate is concluded by the delay time measured, this information is then transmitted to the calculator by the way of electronic pulses. The calculator uses the latest innovative technology to calculate heat usage from heating systems. With its dynamic measuring cycle even the smallest energy consumptions are reliably collected. The large multifunction display permanently shows the heat consumption total, and by using the button is it possible to scroll through the display to show all data.

Installation & Location

Connection flow sensor
The total length of the wire between flow sensor and calculator should not exceed 10 m. Mind the polarity at electronic flow sensors.

Product Data Sheet

To download the product data sheet, please click the link below:

MW-U.pdf

News and press releases

No updates available for this product!

Sontay Contact

UK Sales Tel: +44 1732 861200
International Tel: +44 1732 861225
sales@sontay.com

Part code	Description	£
MW-U	Heat Meter Integrator (build unit with following options)	00.00
Output Module (add type to above code)
-P	Pulsed output	124.00
-M	M-Bus	144.00
Flow Sensor (add type to above code)
-4	qp 0.6m3/h, G¾”, (R½”) screwed	+235.00
-5	qp 1.5m3/h, G¾”, (R½”) screwed	+235.00
-6	qp 2.5m3/h, G1”, (R¾”) screwed	+241.00
-7	qp 3.5m3/h, G1¼”, (R1”) screwed	+404.00
-8	qp 6m3/h, G1¼”, (R1”) screwed	+423.00
-9	qp 10m3/h, G2”, (R1½”) screwed	+593.00
-E	qp 10m3/h, DN40 flanged	+685.00
-F	qp 15m3/h, DN50 flanged	+798.00
-G	qp 25m3/h, DN65 flanged	+1067.00
-H	qp 40m3/h, DN80 flanged	+1216.00
-J	qp 60m3/h, DN100 flanged	+1456.00
System Type (add type to above code)
-4	Heating system	00.00
-5	Cooling system	00.00
Typical order code: MW-U-M-E-4 ➡ Heat Meter Integrator with M-Bus output, qp 10m3/h flow meter (DN40 flanged) and for heating system.
The default location of the flow sensor is in the return. If the meter is to be fitted in the flow please advise at time of order.
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A GLANCE AT THE LATEST NEWS

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