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Wesan WB E

Product catalog summary

Application
The WESAN WB E is a fully electronic bulk water meter designed for installation at transitions from vertical to horizontal pipes, such as in wells.

Features

Calibratable and exchangeable measuring insert.
Electronic sensor control for flow rate recording.
12-year lithium battery life.
Standard optical ZVEI interface.
Adjustable reading date for billing purposes.
Rotatable integrator and a single-line 7-digit display for easy reading.
High long-term accuracy under extreme conditions.
Extended measuring range for small flow rates beyond standard metrological class specifications.

Basic Features

Ambient class: OIML R49 class C / MID E2 + M1.
Protection class: IP 54 or IP 68.
Standard interfaces: Optical ZVEI, with optional M-Bus, L-Bus, and pulse interfaces.

Display

LCD with 7-digit display showing flow rate in m³/h, l/h, m³, or l.
Total values range from 9,999.999 to 9,999.999.

Volume / Pulse Open Collector

Max frequency: 90 Hz.
Max input voltage: 30 V.
Max input current: 27 mA.
Pulse duration and pause: 5.5 ms each.

Supply Voltage

Operating voltage: 3.0 VDC (lithium battery).
Battery lifetime: 12 years.
Nominal power: 30 μW.

Interfaces Overview

Optical ZVEI interface for communication, M-Bus protocol according to EN 1434-3.
L-Bus interface for radio module IZAR RADIO EXTERN.
Pulse output for volume (open collector).

Pulse Interface Specification

DN 50-125: Pulse rates from 1 to 1000 l/pulse, display with 1 digit after comma.
DN 150: Pulse rates from 10 to 10000 l/pulse, no digits after comma.
Configurable pulse values in the field.

General Specifications

Temperature range: 0 to 30°C, safety up to 50°C.
Ambient operating and storage temperature: 0 to 55°C.
Nominal pressure: 16 bar.

Technical Data

Nominal diameters: DN 50, 80, 100, 150, 200 mm.
Nominal flow rates: 15 to 250 m³/h.
Maximum flow rates: 50 to 600 m³/h.
Minimum flow rates: 0.2 to 4 m³/h.

Approval

Metrological class: B•H for all nominal diameters.

Dimensions

Overall lengths and flange diameters vary by nominal diameter.
Weight ranges from 14.2 kg to 130 kg depending on size.

Special Versions

Available with different nominal pressures, special flange holes, for other media, and different pulse values.

Catalog excerpts

ELECTRONIC METER | WOLTMAN Fully electronic bulk water meter for installation at a transition from a vertical to a horizontal pipe (e.g. in a well). ► Calibratable and exchangeable measuring insert ► Electronic sensor control for recording flow rate ► Lithium battery, lifetime 12 years ► Optical ZVEI interface equipped as standard ► Adjustable reading date for billing ► Single-line 7-digit display for easy meter reading ► Outstanding long-term accuracy even under extreme loads ► Measuring range for small flow rates considerably larger than specified for metrological class

Open the catalog to page 1

ELECTRONIC METER | WOLTMAN ELECTRONIC - BASIC FEATURES Optical ZVEI M-Bus, L-Bus, pulse Ambient class Protection class Interfaces standard Interfaces optional* * Possible combinations - M-Bus / pulse - L-Bus / forward pulse - only M-Bus Note: HYDRO-SET Software for configuration of meters, readout of measured values and printout of meter logs. Available under www.diehl.com/metering (Products - downloads) Display indication Total values Values displayed Flow rate VOLUME - / PULSE OPEN COLLECTOR Max. voltage drop at active Max. current through inactive Max. reverse voltage without destroying outputs...

Open the catalog to page 2

ELECTRONIC METER | WOLTMAN PULSE INTERFACE - SPECIFICATION Pulse variants 1 digit after comma l/pulse 1 (factory setting) l/pulse 100 (factory setting) 0 digits after comma l/pulse 10 (factory setting) l/pulse 1000 (factory setting) Two forward pulses; one forward and one backward pulse; pulse and direction signal Note: In the field the pulse values can be configured as desired in the specified value range. HYDROMETER GmbH • Postfach 1462 • 91505 Ansbach Subject to technical adjustments

Open the catalog to page 3

ELECTRONIC METER | WOLTMAN Temperature range Temperature safety Ambient operating temperature Ambient storage temperature * See also special versions. TECHNICAL DATA Nominal diameter Nominal flow rate (DIN ISO Permissible continuous load Maximum flow rate (short-term) QmsK Transition flow rate Q, Minimum flow rate Qmin Starting flow rate Flow rate at 0.1 bar pressure Nominal diameter Metrological class HYDROMETER GmbH • Postfach 1462 • 91505 Ansbach Subject to technical adjustments

Open the catalog to page 4

ELECTRONIC METER | WOLTMAN Nominal diameter Hole circle diameter K mm Height to remove measuring SPECIAL VERSIONS - Versions with different nominal pressure on request - Special flange holes - For different pulse values PRESSURE LOSS GRAPH / TYPICAL ERROR GRAPH Pressure loss graph Typical error graph HYDROMETER GmbH • Postfach 1462 • 91505 Ansbach Subject to technical adjustments

Open the catalog to page 5

Wesan WB E

Wesan WB E

Catalog excerpts

All DIEHL Metering catalogs and technical brochures