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1 1/2 Water Flow Meter: Commercial 1.5 Inch Brass Inline Submeters for Billing
Quick Answer
For commercial water lines from 0.16 to 16 cubic meters per hour, a 1.5 inch brass inline submeter gives direct billing data from a compact body that fits standard DN40 pipe. Choose a brass body meter with R100 range ratio, pulse output if remote reading is required, and BSP or NPT threads depending on the site. Silver Automation Instruments supplies these meters with a 16 bar pressure rating and 50 degree C cold water service.
Meter Body and Sizing
Most commercial 1.5 inch lines do not need an inline water flow meter larger than DN40. A brass body keeps the cost lower than stainless steel and handles municipal water, cooling water, washing lines, and irrigation submetering. We have seen this on customer sites many times. A 1.5 inch brass inline submeter with R100 range ratio delivers a starting flow of 0.16 m3/h and a maximum flow of 20 m3/h. The continuous Q3 flow is 16 m3/h. The meter gives stable measurement from a single jet mechanism inside the brass chamber.
In practice, engineers choose this meter for tenant billing in apartment buildings, hotel cooling towers, industrial park water branches, and food processing washdown lines. Because the meter is inline, installation does not require a long straight run like an electromagnetic flow meter. Most sites can install the meter with two isolation valves and a strainer upstream.
Flow Accuracy and Pulse Options
The mechanical register on this 1 1/2 water flow meter is available in dry dial or wet dial versions. For most export orders to Southeast Asia and Latin America, Silver Automation Instruments supplies the dry dial version. You can read the totalized cubic meters directly from the face. Accuracy is plus or minus 5 percent in the lower zone and plus or minus 2 percent in the upper zone. That is tight enough for cost allocation and billing, not for custody transfer of high value product.
A pulse output is the option we recommend for remote reading. Each pulse represents 10 liters, 100 liters, or 1 cubic meter depending on the reed switch gear. You can connect the two wire pulse to a building management system, a PLC, or an energy monitoring panel. We also supply M-Bus and RS485 outputs for larger property networks.
Installation and Site Conditions
Use a 1.5 inch brass inline submeter on cold potable water, clean well water, or non aggressive process water. Maximum working pre
Do not put this meter on seawater, raw sewage, or abrasive slurries. Those jobs call for a magnetic flow meter or ultrasonic clamp on meter. Silver Automation Instruments can quote both alternatives for the same line size if your water quality is outside brass meter limits.
Recommended Models and Ordering Data
When you send an inquiry, include flow range in cubic meters per hour, pipe size as DN40 or 1.5 inch, thread type BSP or NPT, and whether you need pulse output. A typical part code is SI-WM-B40-P for a DN40 brass inline water meter with pulse. Use SI-WM-B40 for a basic mechanical meter without pulse. Use SI-WM-B40-M for M-Bus output.
Last year a customer in Vietnam asked us for a 1.5 inch brass inline submeter on a cooling tower makeup line. The site had a 1 1/2 inch steel pipe, an average flow of 8 m3/h, and no local power for a panel meter. We supplied a mechanical dry dial version with 100 liter pulse output. That meter paid for itself in one billing cycle.
As a water flow meter supplier for commercial and industrial sites, Silver Automation Instruments at flow-meter.com.au handles selection, export documents, and after sales support. For pricing on a 1 1/2 water flow meter for your site, contact us. Tel: +86-135-1213-1526, Whatsapp: 86-135-12131526, WeChat: +86 13512131526.
FAQ
What is the typical flow range of a 1.5 inch brass inline submeter? The normal working range is 0.16 to 20 cubic meters per hour. Q3 is 16 m3/h and Q4 is 20 m3/h.
Can this meter be used for hot water? The standard cold water meter works up to 50 degrees C. Specify a hot water version for temperatures up to 90 degrees C.
Is pulse output available? Yes. You can order a reed switch output with 10 liter, 100 liter, or 1 cubic meter pulses. M-Bus and RS485 interfaces are also available.
What thread types do you supply? We supply BSP threads for Southeast Asia, Oceania, and the Middle East. NPT threads are available for Latin America and other markets that follow US pipe standards.
How do I get a quote from Silver Automation Instruments? Send your flow range in m3/h, pipe size DN, thread type, and required output. Contact us at Tel: +86-135-1213-1526, Whatsapp: 86-135-12131526, WeChat: +86 13512131526.
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