WESAN WPV A E
ELECTRONIC METER | WOLTMAN
Meter for measuring heavily fluctuating flow rates.
- Electronic sensor control for recording flow rate
- Lithium battery, lifetime up to 12 years
- Optical ZVEI interface equipped as standard
- Adjustable reading date for billing
- Rotatable integrator for main meter
- Single-line 7-digit display for easy meter reading
- Ideal design of housing and housing cover prevents sedimentation, stagnant water and air pockets
- No measuring errors in the switch-over range
- In order to secure a safe switch-over the WESAN WPV A E needs a minimum ingoing pressure of 0.6 bar
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Electronic - Basic Features
Ambient class OIML R49 class C / MID E2 + M2 Protection class IP 68 Interfaces standard Optical ZVEI Interfaces optional M-Bus, L-Bus, pulse -
Display
Display indication LCD, 7-digit Unit m³/h - l/h - m³ - l Total values 9,999.999 - 999,999.9 - 99,999.99 - 9,999.999 Values displayed Flow rate -
Volume- / Pulse Open Collector
Max. frequency Hz 90 Max. input voltage V 30 Max. input current mA 27 Max. voltage drop at active output V/mA 2/27 Max. current through inactive output μA/V 5/30 Max. reverse voltage without destroying outputs V 6 Pulse duration ms 5.5 Min. pulse pause ms 5.5 -
Supply Voltage
Operating voltage UN VDC 3.0 (lithium battery) Battery lifetime Up to 12 years Nominal power PN μW 30 -
Pulse Interface - Specification
Pulse rates l/pulse Decadic 1 ... 1000 Display 1 digit after comma Pulse value 1 l/pulse 100 (factory setting) Pulse value 2 l/pulse 1000 (factory setting) Pulse variants Two forward pulses (factory settings); one forward and one backward pulse; pulse and direction signal
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General
Temperature range °C 1 ... 30 Temperature safety °C 1 ... 50 Ambient operating temperature °C 1 ... 55 Ambient storage temperature °C 1 ... 55 Nominal pressure PN bar 161 Display range 0.05 l ... 999,999 m³ 1 versions with different nominal pressure on request (see also special versions) -
Technical Data
Nominal diameter DN mm 150 Permanent flow rate Q3 m³/h 160 Minimum flow rate Q1 l/h 100 Transitional flow rate Q2 l/h 160 Overload flow rate Q4 m³/h 200 Starting flow rate l/h 16 Permanent flow rate bypass meter Q3 m³/h 16 Switch-over flow rate rising l/h 4250 Switch-over flow rate falling l/h 7850 -
Approval
Nominal diameter DN mm 150 MID (DE-17-MI001-PTB003) • Dynamic range bypass meter HYDRUS (Q3/Q1) R 1600 H Potable water KTW / W270 - Dimensions
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Special versions
- Versions with different nominal pressure on request
- Special flange holes on request - Pressure loss graph / Typical error graph