Description
Overviews
The GAOTek 10-inch electromagnetic flow meter with NB-IoT technology is a high-performance, highly reliable flowmeter designed for measuring the volumetric flow of conductive liquids and slurries in closed conduits. It is widely used in industries such as iron and steel, electric power, petroleum, chemicals, coal, metallurgy, papermaking, water supply and drainage, food, pharmaceuticals, and more.
Technical Specifications
| Type | Variable area water flowmeters, electromagnetic flow meter | |
| Customized Support | OBM, ODM, OEM, software reengineering | |
| Medium | Liquid; seawater | |
| Accuracy | ±0.5% of the value displayed; ±0.3% or ±0.2% are selectable | |
| Output | 4 mA to 20 mA RS485 | |
| Connection | Flanged | |
| Protection Grade | IP65 or IP68 (optional) | |
| Material | Carbon steel | |
| Electrode Material | 316L, hastelloy C22, platinum, titanium, or tantalum | |
| Power Supply | Compact flow meter electromagnetic flow meter, 220 V AC 50 Hz or 24 V DC | |
| Power Consumption | <15 W (including sensor-supporting power consumption) | |
| Display and Push Buttons | The big-screen LCD display with backlighting can show the instantaneous flow, total flow, percentage of flow, alarm display, and four thin-film touch nubs for data settings | |
| Accumulator | Forward total quantity, reverse total quantity | |
| Output Signal | Analog Output | Bidirectional with two ways; isolation 0 mA to 10 mA or 4 mA to 20 mA |
| Load resistor: 0 to 10 mA; 0 Ω to 1.5 kΩ; 4 mA to 20 mA; 0 Ω to 750 Ω | ||
| Frequency Output | Forward and reverse flow output; frequency range is set between 1 Hz and 5000 Hz. The external voltage must be ≤35 V, and the max output current is 50 mA when the transistor is turned on | |
| Alarm Output | Two outputs from the collectors of photoelectric isolated transistors for alarm signals. The external voltage must be ≤35 V, and the max output current is 250 mA when the transistor is turned on. Alarm status activates when pipes are empty, excitation circuits are broken, or the flow rate exceeds designed limits | |
| Pulse Output | Pulse output for forward and reverse flow measurement. The upper frequency of pulse output can be up to 5000 CP/s. The relevant pulse value ranges from 0.0001 to 1.0 m³/p. Pulse width can be set to 20 ms or square wave form automatically. External voltage must be ≤35 V, and max output current is 250 mA when the transistor is turned on | |
| Damping Time Constant | Continuously variable from 0 s to 100 s (90%) can be selected by group | |
| Communication | RS232, RS485, or HART communication, with lightning resistance | |
| Power Failure | Anti-failure clock designed to save power failure records for up to 16 instances (10 years) | |
| Ex-proof Mark | Exd IIBT4 | |
| Ambient Temperature | -13 °F to 140 °F (-25 °C to 60 °C) | |