Domestic hot water meter DN15-20

• Description
• Specification

• Description
• Specification

DZR Brass Body Multi-Jet Type Meter.

Water meters supplied must be approved for trade use by the National Regulator for Compulsory Specifications (N.R.C.S.) in South Africa in accordance with the requirements of S.A.N.S. 1529-1: 2019 and the N.R.C.S. and section 22 of the Legal Metrology Act 2014 (Act 9 of 2014)

All water meters supplied must be tested and verified within the borders of South Africa in accordance with the requirements of Section 7 of the Legal Metrology Act 2014 (Act 9 of 2014). All verification to be performed by a registered Verification Officer in a S.A.N.A.S. Accredited Verification Laboratory in Terms of S.A.N.S. 1529 – 1: 2019.

Performance Specification

The water meter must be of the multi-jet inferential type with the following capabilities: –

 

METER SIZE	15mm*	20mm*
Maximum Flowrate qs ± 2% (m³/h)	3	5
Nominal Flowrate qp ± 2% (m³/h)	1,5	2,5
Transitional Flowrate qt ± 2% (ℓ/h)	120	200
Minimum Flowrate q min ± 5% (ℓ/h)	30	50
Starting Flow (ℓ/h)
Maximum Working Pressure (kPa)	1600	1600
Maximum Test Pressure (kPa)	4800	4800
Body Length (mm)	165	165
Pulse Output (ℓ)	1 or 10 or 100 or 1000	1 or 10 or 100 or 1000

* Class ‘B’ Accuracy Specification.

 

In addition, the meters offered must comply with the following: –

• Counters to be of the hermetically sealed dry dial type.
• Meters must be approved to Class B by N.R.C.S. for horizontal installation.
• Meter bodies to be manufactured from dezincification resistant brass capable of withstanding a test pressure of 4 800 kPa (48 Bar).
• Cold water meter to have a working temperature ≤ 50º C.
• Hot water meter to have a working temperature ≤ 90º C.
• Meter to have a maximum working pressure of 1 600 kPa (16 Bar).
• Maximum rate of flow (Qs) must be achieved at a pressure drop not exceeding 100 kPa across the inlet/outlet of the meter.
• All internal plastic components to be constructed of virgin materials.
• Each meter must be backed with a 3-year guarantee against faulty workmanship and/or materials.
• Meters to be pulse prepared. Reed switch is an optional extra.
• Meters to fitted with a removeable fine mesh strainer on the inlet side to protect the working chamber from damage and wear caused by suspended solids suspended solids.

General

Spare parts and accessories for all water meters offered must be available locally in South Africa and available for ten years after purchase of the water meter.