rs 485 low price liquid electromagnetic flowmeter with signal pulse output made in china

Power consumption

<15W（Supporting power consumption with sensors）

Display and buttons

Display in Chinese and English, can display instantaneous flow, cumulative flow and alarm display (excitation open circuit alarm, empty pipe alarm, flow limit alarm). 4 membrane touch switches for data setting

counter

Forward total, reverse total

output signal

Analog output

Two-way two-way, fully isolated 0~10mA/4~20mA

Load resistance: 0 ~ 1.5kΩ when 0 ~ 10mA; 0 ~ 750Ω when 4 ~ 20mA

Frequency output

Forward and reverse flow output, the upper limit of output frequency can be set within 1 ~ 5000Hz. Open collector bidirectional output of transistor with photoelectric isolation. External power supply is not greater than 35V, the maximum current of the collector when conducting is 50mA

Alarm Output

Two open-collector alarm outputs with photoelectric isolation transistors. The external power supply is not greater than 35V, and the maximum current of the collector when it is turned on is 250mA. Alarm status: fluid empty pipe, excitation disconnection, flow overrun.

Pulse output

Forward and reverse flow output, the upper limit of output pulse can reach 5000CP / S. The pulse equivalent is 0.0001 ~ 1.0m⊃3; / P. The pulse width is automatically set to 20ms or square wave. Open collector output of transistor with photoelectric isolation. External power supply is not greater than 35V, the maximum current of the collector when conducting is 50mA

Matching accuracy

± 0.5% of market value, optional ± 0.2% or 1% of indicated value

Damping time constant

Continuous variable from 0 ~ 100s (90%) time grading optional

communication

Optional RS232C or RS485 serial communication interface, HART communication protocol, with anti-lightning protection

Loss of power

The internal design of the instrument has a power-off clock, which can store 16 drop-out records (10 years)

Protection level

IP65

Explosion-proof mark

Exs[ia]ia||cT5

Polyurethane rubber

1. Very good wear resistance coal slurry, mud, ore slurry, etc.

2. Not resistant to acid, alkaline and other corrosive or high temperature media

3. There must be no negative pressure in the pipeline

Neoprene

1. Very good elasticity and wear resistance

2. Capable of measuring domestic sewage, non-corrosive industrial sewage PH value: in the range of 6/7/8, temperature below 80 ℃ liquid

3. There must be no negative pressure in the pipeline

Teflon F-4 PTFE

1. Boiling-resistant hydrochloric acid, sulfuric acid, nitric acid, aqua regia, concentrated alkali and various organic solutions

2. Strong abrasion resistance and poor bonding performance

3. There must be no negative pressure in the pipeline

Perchloroethylene propylene F-46(PTFE)

1. On the basis of all functions of PTFE, the temperature of non-corrosive liquid can be increased within 140 degrees

2. Not resistant to fuming nitric acid, butyl lithium

3. There must be no negative pressure in the pipeline

Silicone fluoride lining

Temperature resistance: 70 degrees, mainly high temperature. It can be used to measure hot water in heating systems, and is not resistant to corrosion.