EW70 Series Woltman Bulk Water Meters DN50 25 FOR COLD AND WARM POTABLE WATER APPLICATIONS CONTENTS PRODUCT DATA Fig.. EW70xA Series Contents... General... 2 Application... 2 Features... 2 Design... 2 Materials... 2 Approvals... 2 Technical Details... 3 Specifications... 3 Flow Data... 3 Sizing... 3 Function... 3 Mechanical Counter (EW70xA)... 3 Electronic Counter (EW70xB)... 3 Flow Sensor... 3 Power Supply... 3 Interfaces... 4 Installation... 4 Communication and Readout... 4 Communication Options EW70xA... 4 Communication Options EW70xB... 4 Optical interface on front panel... 4 Readout Options... 4 Setup... 4 Identification... 4 Meter Identification in the Field... 4 Front Panel and Type Plate Contents... 5 Dimensions... 6 Ordering Details... 7 Ordering Information... 7 Scope of Delivery... 7 Accessories... 7 Diagrams... 8 Accuracy... 8 Flow Diagram... 8 Fig. 2. EW70xB Series Honeywell All rights reserved EN0H-046GE25 R033
GENERAL Application Honeywell EW70 Series Woltman water meters are used for flow measurement of cold or warm water in potable water systems. EW70xA (i.e. EW700A and EW70A) water meters have a mechanical roller counter and can be equipped with up to two reed switches for pulse output. EW70xB (i.e. EW700B and EW70B) water meters have an electronic counter and an M-Bus and ZVEI optical output. Features Suitable for horizontal and vertical installation Calibratable sealed measuring insert Low pressure loss Rugged design for longterm accuracy Integrated outputs as standard Design EW70 Series water meters consist of: Rotatable mechanical or electronic counter. Electronic counter with optical interface Optional pulse or M-Bus output Woltman type mechanical flow sensor Housing with flanges to PN6 Materials Counter housing and lid made of white plastic Counter base and flow sensor housing made of cast iron, painted dark grey Approvals Table. Approvals EW70 Series Size Approval Metrological class EW700A DN50 65 EC type approval B H DN80 25 EC type approval B EW700B DN50 65 National approval B H DN80 25 National approval B 2 3 4 5 2 9 4 5 Fig. 3. EW70xA main components Fig. 4. EW70xB main components Table 2. EW30 Series main components Number Component Counter lid 2 Roller counter (EW70xA) or seven digit LCD display (EW70xB) 3 Decimal place dials 4 Counter housing 5 Inlet 6 Flow sensor housing 7 Outlet 8 Flow indicator 9 Optical interface 0 Push button 8 7 6 0 7 6 EN0H-046GE25 R033 2 Honeywell All rights reserved
TECHNICAL DETAILS Specifications Medium Medium temperature Ambient temperature Storage temperature Operating pressure Protection class Measuring process Flow Data Potable water EW700: 0 30 C EW70: 0 90 C 0 55 C 0 55 C max. 6bar EW70xA: IP68 EW70xB: IP54 Mechanical or electronic counter unit with Woltman type mechanical volume measurement Display EW70xA: mechanical counter EW70xB: LCD, 7-digit Units EW70xA: m³ EW70xB: m³/h, l/h, m³, l Metrological class Battery lifetime DN50 65: B H DN80 25: B 0 years (EW70xB only) Table 3. Flow rates EW70 Series DN size 50 65 80 00 25 Starting l/h 90 30 60 90 90 Minimum horizontal (Q min) m³/h 0.35 0.45 0.5 0.6 0.6 Minimum vertical (Q min) m³/h 0.4 0.5 0.5 0.6 0.6 Transition horizontal (Q t) m³/h.2 0.8.8 2 Transition vertical (Q t) m³/h.8 2 0.8.8 2 Nominal (Q n) m³/h 5 25 40 60 00 Permissable continuous load m³/h 30 50 20 230 250 Maximum short term (Q max) m³/h 90 20 200 300 350 Dynamic range (Qn/Q min) 40: 50: 80: 00: 60: Flow rate @ Δp=00mbar m³/h 35 63 5 5 05 Sizing EW70 Series water meters should be selected in such a way that permanent system flow rates are between transition flow rate (Qt) and nominal flow rate (Qn). The flow rate may not drop below minimum flow rate (Qmin) and should not exceed permissable continuous load for more than 5 minutes per day Maximum short term flow rate (Qmax) must not be exceeded at any time Function Mechanical Counter (EW70xA) The mechanical counter contains a roller counter for values of whole m³ and dials for tenth, hundredth and thousandth parts of m³. It is flanged to the flow sensor housing. Electronic Counter (EW70xB) The electronic counter (or simply counter ) contains circuits for recording the flow and displaying data. It is flanged to the flow sensor housing. The meter can be read from a single line seven-digit display with units and symbols. A push button provides control of various display loops. All failures and faults are recorded automatically and displayed on the LCD screen. For protection all relevant data is saved in a volatile memory. This memory saves measured values, device parameters and types of error at regular intervals Flow Sensor The Woltman technology of the flow sensor combines high measuring accuracy with long term stability and the capability of measuring high volumes at low pressure drop. The Woltman wheel is connected to the counter by a shaft and a magnetic coupling. Power Supply Lithium battery 3.0V DC with 0 year nominal lifetime (EW70xB only). Interfaces EW70 Series with roller counter Retrofittable with up to two pulse outputs. EW70 Series with electronic counter Equipped with ZVEI optical interface and M-Bus interface on board as standard. For more details on interfaces see chapter Communication and Readout below. Honeywell All rights reserved 3 EN0H-046GE25 R033
Installation Calming legs of straight pipe with a minimum length of 3 x DN before and after EW70 Series water meters are required Calming legs of straight pipe with a minimum length of 5 x DN are required before or after elbows All sizes may be installed in any position except upside down Avoid installation at highest point of system or system part as air may be trapped in meter During measurement meter must be completely filled with water Communication and Readout Communication Options EW70xA EW70 Series water meters with mechanical roller counter can be retrofitted with up to two pulse outputs. This is done by attaching one or two reed switches to the counter housing. The pulse value depends on the position where the reed switch is attached: Position has a pulse value of 00 litres/pulse Position 2 has a pulse value of,000 litres/pulse Either position can be used. It is also possible to occupy both positions in which case two reed switches are required. Available reed switches are listed in chapter Accessories further below. Installation of the reed switches is explained in the installation and setup instructions supplied with the product. Communication Options EW70xB EW70 Series water meters with electronic counter have an optical interface on the front panel and an M-Bus interface on board. Optical interface on front panel ZVEI interface, M-Bus protocol, for readout and parametrisation. Required for access to meter: Bluetooth optohead (EWA300799) PC with HydroSet software M-Bus interface Configurable telegram, according to EN3757-3, data reading and parametrization via two wires with polarity reversal protection, auto baud detection (300 and 2400 baud), 2 M-Bus connections with 2 primary adresses. Readout Options Manual readout by visiting meter and reading consumption values off display Optical: by visiting meter and reading consumption values out via optical interface (EW70xB only) Pulse: remote readout by attaching meter to a suitable pulse counting device (EW70xA only) RF: remote readout by attaching meter to a mobile or fixed RF network. Additional items required. M-Bus: remote readout by attaching meter to an M-Bus network Table 4. Readout options EW70 Series EW70xA EW70xB Optical Not possible With BT optohead EWA300799, HydroSet software and suitable PC Pulse With reed switch Not possible EWA63006 or EWA630064 M-Bus RF Setup With reed switch and external M-Bus module EW535M0056 With reed switch and external RF module EW900AGZ00 No field setup at meter required. Identification Meter Identification in the Field Included as standard With external RF module EW900AEZ00 Counter EW70xA (mechanical): white round rotatable counter housing permanently fixed to flow sensor housing. Roller counter, flow indicator and dials for decimal places Type plate attached to side of counter housing EW70xB (electronic): white front panel with LCD display and black Honeywell logo above display Type plate included on front panel Flow sensor Flanged housing painted dark grey with DN size embossed on side EN0H-046GE25 R033 4 Honeywell All rights reserved
Front Panel and Type Plate Contents EW70 Series water meters with a mechanical counter have additional typeplates which are attached to the side of the counter housing. There are two typeplates which carry specification, approval and product information and a third label with a barcode of the serial number. EW70 Series water meters with an electronic counter have this information printed onto the counter panel. 2 3 4 7 6 5 0 2 3 9 8 9 8 7 4 5 6 Fig. 5. Top view of mechanical counter Fig. 6. Type plate contents of version with mechanical counter 0 2 6 20 9 3 24 2 9 5 9 22 23 Fig. 7. Top view of electronic counter Table 5. EW30 Series front panel and type plate elements Number Element Number Element Unit 3 Approval mark 2 Unused 4 Production year 3 0.00 x unit dial 5 OS Number 4 0.0 x unit dial 6 Maximum static pressure in bar 5 Indicates reed switch position pulse value 7 Serial number 0.m³ (00l) 6 Indicates reed switch position 2 pulse value 8 DN size m³ (,000l) 7 0. x unit dial 9 Approval number 8 Differential pressure at nominal flow 20 Dynamic range 9 Internal typename 2 Production year (first two digits) and serial number 0 Nominal flow 22 Interface type Metrological / environmental class 23 Replacement date 2 Maximum media temperature 24 Decimal place indicator Honeywell All rights reserved 5 EN0H-046GE25 R033
Dimensions Fig. 8. Dimensions Fig. 9. Dimensions DN Size Length L Height H Table 6. Dimensions EW70 Series Height H Diameter B Diameter D Bolt circle K Screwhole D Weight 50 200 23 75 0 65 25 8 x 4 0.2kg 65 200 23 83 0 85 45 8 x 4.2kg 80 200 54 89 0 200 60 8 x 8 3kg 00 250 54 05 0 220 80 8 x 8 3kg 25 250 54 5 0 250 20 8 x 8 22kg NOTE: All dimensions in mm unless stated otherwise EN0H-046GE25 R033 6 Honeywell All rights reserved
ORDERING DETAILS Ordering Information Table 7. OS-Nos. (OS=Order Specification) OS-Number Item DN size Flow rate Qn Length for cold water for warm water EW70 Series with 50 5 m³/h 200mm EW700AA5000 EW70AA5000 mechanical counter 65 25 m³/h 200mm EW700AA5600 EW70AA5600 80 40 m³/h 200mm EW700AA6500 EW70AA6500 00 60 m³/h 250mm EW700AA7300 EW70AA7300 25 00 m³/h 250mm EW700AA800 EW70AA800 EW70 Series with 50 5 m³/h 200mm EW700BM5000 EW70BM5000 electronic counter and M-Bus 65 25 m³/h 200mm EW700BM5600 EW70BM5600 80 40 m³/h 200mm EW700BM6500 EW70BM6500 00 60 m³/h 250mm EW700BM7300 EW70BM7300 25 00 m³/h 250mm EW700BM800 EW70BM800 Scope of Delivery EW70 Series water meter Installation and setup instructions Accessories Reed switch for pulse output Cable length 2m Cable length 0m EWA63006 EWA630064 External RF module For EW700BM and EW70BM For EW700AA and EW70AA External M-Bus module For EW700AA and EW70AA EW900AEZ00 EW900AGZ00 EW535M0056 Bluetooth optohead For EW700BM and EW70BM EWA300799 Honeywell All rights reserved 7 EN0H-046GE25 R033
DIAGRAMS Accuracy Error [%] 7 6 5 4 3 2 0 - -2-3 -4-5 -6-7 Flow Diagram Q min B Q t B Q n Q max Fig. 0. Accuracy chart EW70 Series DN 50 65 80 00 50 Flow rate [m3/h] 00 2 3 4 5 6 7 8 9 2 3 4 5 6 0000 000 kg/h 2 3 4 5 6 7 8 9 0000 2 3 4 5 6 7 8 9 00000 2 3 4 5 6 7 8 9 000000 2 Flow rate 0.28 l/sec.0 2.5 5.0 0.0 25.0 50.0 00 250 Fig.. Pressure drop diagram EW70 Series 0 mbar 000 Pa Pressure loss Environmental and Combustion Controls Honeywell GmbH Hardhofweg 7482 MOSBACH GERMANY Phone: +49 (626) 80 Fax: +49 (626) 8393 http://ecc.emea.honeywell.com EN0H-046GE25 R033 March 203 (Rev. B) 203 Honeywell International Inc. Subject to change without notice Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Z.A. La Pièce 6, 80 Rolle, Switzerland or its Authorized Representative.