| DN | 15; 20;25 |
| Water meter dimension | 90mm (W) * 165mm (L)* 120mm(H) |
| Advanced Volumetric type | Yes |
| Q3/Q1 | 160 |
| Nominal flow Qn(m3/h) | 2.5 |
| Maximum flow Qmax(m3/h) | 4 |
| Minimum flow Qmin(m3/h) | 0.015 |
| Max. working pressure (bar) MAP | 10bar |
| Case Material | Plastic or brass |
| Weight of Meters | ≥1.75 kg |
| Protection index | IP68 |
| Service life | 10 years |
STS Split Prepayment Brass Water Meter
ISW1598 series is a STS (Standard Transfer Specification) compliant, electronic valve controlled, water meter. With ISW1598 series you are assured of continuously good metrology and revenue protection at the same time.
A handy remote keypad, as Customer Interface Unit (CIU), is offered to enter recharge tokens and information short codes. The CIU is installed inside customer’s house, when the meter is kept away from customer’s reach in locked-up boxes or premises. The communication between CIU and the water meter is LORA. The meter is available with AMR data transmission features
Main Featuresl Directive 2014/32/EU, OMIL R-49:2013(E)& EN14154 compliant
l Wet dial / dry dial register construction on request
l Switchable between prepayment and post-paid.
l Pre-programmable low credit warning
l Recharge by inputting 20 digits TOKEN with keypad CIU
l Brass / plastic meter body on request
l Reading through LORA and the system of GPRS /3G.
l Non- return valve preventing back-flow
l CIU supports to match with different water meters
l Support the valve control, through the handheld device and the system remote send valve control command.
Technical Specification
| Product Category | DN15 | DN20 | DN25 | |
| Accuracy | level 2 | |||
| Sealability | 1.6Mpa pressure of water , 15 minutes without leakage | |||
| Length | 165mm | 195mm | 225mm | |
| Overload flow rate | 3m³/h | 5m³/h | 7m³/h | |
| Common flow rate | 1.5m³/h | 2.5m³/h | 3.5m³/h | |
| Boundary flow rate | 0.12m³/h | 0.2m³/h | 0.3m³/h | |
| Min. flow rate | 0.03m³/h | 0.05m³/h | 0.07m³/h | |
| Starting flow rate | ≤0.012m³/h | ≤0.016m³/h | 0.020m³/h | |
| Minimum reading | 0.0001m³ | |||
| Maximum reading | 9999.9999m³ | |||
| Commonly used small flow error | ≤±5% | |||
| flow rate error | ≤±2% | |||
| Operating temperature: | 0.1℃—40℃(water meter) | |||
| Operating pressure : | 0.0——1.0Mpa | |||
| Size(DN) | 15mm | 20mm | 25mm | |
| Power mode | High-performance lithium battery-powered, easy to replace the battery | |||
Technical Parameters
| Water Meter | |
| Advanced Volumetric type | Yes |
| Nominal flow Qn(m3/h) | 2.5 |
| Maximum flow Qmax(m3/h) | 4 |
| Minimum flow Qmin(m3/h) | 0.015 |
| Q3/Q1 | 160 |
| Q2/Q1 | 1.6 |
| Max. working pressure (bar) MAP | 10bar |
| Total pressure loss (Pa) | < 0.063Mpa |
| Permissible Error (Q2≤Q≤Q4) | 2.00% |
| Permissible Error (Q1≤Q＜Q2) | 5.00% |
| Minimum reading of the counter (m3) | 0.00005 |
| Maximum reading of the counter (m3) | 9999.9 |
| Operation Temperature | <30℃ |
| Case Material | Brass |
| Weight of Meters | 1.75 kg |
| Service life | 10 years |
| IP | IP68 |
| Water Meter Dimension | 90mm (W) * 165mm (L)* 120mm(H) |
| Weight | 1.75KG~3KG |
Dimension Diagram
120x68x29mm
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