WA400 - Uncategorized Global Water - Free user manual and instructions
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| Product Type | Water Flow Meter |
| Brand | Global Water |
| Model | WA400 |
| Dimensions | 4.5 x 3.2 x 2.1 inches (114 x 81 x 53 mm) |
| Weight | 8.5 oz (240 g) |
| Power Supply | 3.6V lithium battery (included) |
| Operating Temperature | 32°F to 122°F (0°C to 50°C) |
| Measurement Range | 0.1 to 30 GPM (0.38 to 113.6 L/min) |
| Accuracy | ±2% of reading |
| Output Signal | Pulse (open collector) |
| Interface | LCD display with flow rate and totalizer |
| Data Logging | Internal memory, stores up to 100,000 readings |
| Communication | USB-C for data download |
| Ingress Protection | IP67 (dust and water immersion) |
| Material | ABS plastic body, brass fittings |
| Mounting | Inline threaded connections (1/2" NPT) |
| Warranty | 2 years limited |
| Maintenance | Clean filter regularly; no user-serviceable parts |
| Safety Features | Overvoltage protection, reverse polarity protection |
| Included Accessories | Battery, mounting adapters, USB cable, manual |
Frequently Asked Questions - WA400 Global Water
How do I install the WA400 flow meter?
Install the meter in a straight pipe section with at least 10 diameters upstream and 5 downstream. Use the included brass fittings and tighten to 20-30 lb-ft. Ensure flow direction matches the arrow on the device.
Can the WA400 measure both water and other liquids?
The WA400 is designed for clean water only. Do not use with corrosive or viscous fluids, as it may damage the sensor.
How do I calibrate the flow meter?
The WA400 is factory calibrated. For field calibration, use the CAL button on the display to enter a known flow rate. Refer to the manual for full procedure.
What is the battery life of the WA400?
The 3.6V lithium battery lasts up to 5 years under normal usage (1 reading per minute). Replace battery when the low battery icon appears.
Does the WA400 store historical data?
Yes, it stores up to 100,000 readings in non-volatile memory. Data can be downloaded via USB-C using the Global Water Data Manager software.
Can I use the WA400 outdoors?
Yes, with IP67 rating, it is dust-tight and can be submerged in water up to 1 meter for 30 minutes. However, avoid direct UV exposure for prolonged periods.
How do I clean the flow meter?
Remove the meter and flush with clean water. If clogged, disassemble the filter screen and clean with a soft brush. Do not use abrasive cleaners.
What is the measurement accuracy?
The WA400 has an accuracy of ±2% of reading across the flow range of 0.1 to 30 GPM. For best results, operate in the middle of the range.
Can I connect the WA400 to a PLC?
Yes, the pulse output (open collector) can be connected to a PLC or counter. Use a pull-up resistor (10 kΩ) to 5-24 VDC. The pulse rate is 1 pulse per gallon.
What should I do if the display is blank?
Check the battery connection and replace if needed. If still blank, press the RESET button on the back. If issue persists, contact Global Water support.
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USER MANUAL WA400 Global Water
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Product information
Brand : Global Water
Model : WA400
Category : Uncategorized