Digital Flow Meter Suitable for Harsh Environmental Conditions Including Wide Temperature Range and High Humidity Levels

Brief Description

The Gas Ultrasonic Flowmeter uses transit-time difference technology for non-contact gas flow measurement. Its intelligent control module handles ultrasonic signal processing, flow calculation, display, and data communication. Suitable for pipeline diameters from DN25 to DN300.

Key Features

• Accuracy: Class 0.5 or 1.0

• Turndown ratio: >1:160

• Supports single, dual, four, or six channels with channel fusion

• Standard volume correction using pressure, temperature, and compressibility factors (AGA8-92DC / SGERG-88)

• Large data storage: 5,000 history records, 1,000 start/stop events, 100 alarms, 20 months of totals

• Power options: 3.6 V lithium battery (average <5 mW) or external 12–24 V DC (<1 W)

• Complies with GB/T 18604-2014 and JJG 1030-2007

Outputs & Communication

• Calibration pulse (opto-isolated, 12–24 V DC)

• IC card pulse (CMOS, 3.3 V)

• Two alarm outputs (battery low / critical, flow over-limit)

• RS-485 with Modbus RTU (baud rates up to 19200)

• 4–20 mA analog output (isolated, 24 V DC)

Environmental Limits

• Ambient temperature: –20°C to +60°C

• Medium temperature: –20°C to +60°C

• Humidity: 5–95% RH

Display & Operation

• Shows standard/working flow, totalizer, temperature, pressure, battery level, flow direction

• Four keys for configuration (password-protected)

Digital flow meter for harsh environments

Digital flow meter wide temperature range

Digital flow meter high humidity resistant

Digital Flow Meter Suitable for Harsh Environmental Conditions Including Wide Temperature Range and High Humidity Levels Images