GKM Helix 4000 Woltmann Cold Water Meter

Wiratama Mitra Abadi 01 04.33 flow measurement,

GKM Helix 4000 Woltmann Cold Water Meter is a Woltmann-type meter designed for measuring bulk forward and reverse flows of cold potable water for revenue billing in commercial or industrial applications and distribution system monitoring.

Its inductive register enables improved output performance and security while its robust shroud and copper ensure long term clear and accurate readability. The GKM Helix 4000 Woltmann is also compatible with the Emeris PR7 inductive pulse transmitter for effective water resource monitoring and management.

Available in six sizes for flow ratesbetween 0.504 m3/h and 787.5 m3/h, the GKM H4000 operates at temperatures up to 50°C and a maximum working pressure of 16 bar. Accuracy maintained in both forward and reverse flow, and the product offers the benefits of inductive-based pulse communications technology. The meter complies with all relevant international quality standards such as OIML R49 and ISO 4064 specifications for forward flow installations in horizontal, vertical and inclined pipelines.

GKM H4000 Woltmann Features

Inductive register for improved output performance and security
Extended low and high flow performance
Suitable for forward and reverse flow metering
Robust shroud and copper can register for long-life and clear readability
Longer wear life for optimum accuracy

Robust construction

Like all Elster meters, the GKM H4000is manufactured from the highest qualitymaterials for maximum resistance towear and corrosion. Meter body and cover are epoxy powdercoated for protection in all environments. Thrust pads and stub spindles aremanufactured intungsten carbide and jewelled rotorbearings are used for maximum wear life. All wetted materials areUK WRAS approvedagainst health risk.

Flexible installation

Installation can be in horizontal, verticaland inclined pipelines. The GKM H4000also achieves good performance inabnormal installations.

Intelligent metering

Fully compatible with Elster’s Emerisrange of intelligent meter readingsystems, GKM H4000 can provide even more vital management information to assistwith ef fective distribution management,reduce water losses from leakage andimprove customer service. Whencombined with the Emeris TRC600 unit(pictured below), a range of intelligentfeatures including leakage alarms, datalogging and tariffs enables a completemetering system that addresses theef ficiency objectives for water providers.

GKM Helix 4000 Woltmann Specification

Size of meter			DN50*	DN80*	DN100*	DN125	DN150*	DN200*
Minimum flowrate	Q₁ ± 5%	m³/h	0.504	1.28	1.28	1.28	3.2	5.04
Transitional flowrate	Q₂ ± 2%	m³/h	0.806	2.048	2.048	2.048	5.12	8.064
Permanent flowrate	Q₂ ± 2%	m³/h	63	160	160	160	400	630
Overload flowrate	Q₂ ± 2%	m³/h	78.75	200	200	200	500	787.5
Measuring range (R)	Q₃/Q₁		125	125	125	125	125	125
Starting Flow (approximately)		m³/h	0.16	0.22	0.25	0.25	0.90	1.20
Temperature class			T50	T50	T50	T50	T50	T50
Max admissiblle pressure		bar	16	16	16	16	16	16
Pressure loss class ΔP		bar	0.25	0.25	0.25	0.25	0.25	0.25
Verification scale interval		m³	0.0005	0.0005	0.0005	0.0005	0.0005	0.0005
Indicating range		m³	999 999	999 999	999 999	999 999	9 999 999	9 999 999
Flow profile sensitivity classes			U3/D0	U3/D0	U3/D0	U3/D0	U0/D0	U3/D0
Working pressure range		bar	From 0.3 to 16
Orientation requirements			all positions but not head down