Micro-flow Metal-tube Flow Transmitter Board

Description :

H837 is an outstanding intelligent rotameter circuit board. It is engineered to be highly compatible with high-performance HART protocol mini-flow rotameter transmitter boards. This specialized design makes H837 an ideal choice for applications demanding precise and stable flow measurement in diverse industrial

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Parameters

Chemical Industry: In chemical production processes such as the precise dosing of reagents in chemical reactions and the monitoring of fluid transfer in pipelines, H837’s high accuracy and stability are crucial.
Petroleum and Gas Sector: During the extraction, refining, and transportation of oil and gas, H837 can be used for measuring the flow of crude oil, natural gas, and various refined products.
Food and Beverage Manufacturing: In processes like beverage bottling lines, where the accurate addition of ingredients such as syrups, flavorings, and water is essential, H837 ensures the correct proportioning.
Water Treatment Plants: For measuring the flow of influent water, treated water, and chemical dosing in water purification processes, H837 provides reliable data.
HVAC Systems: In heating, ventilation, and air-conditioning systems, it can measure the flow of refrigerants, water in heating and cooling loops, and airflows.

Main Features

Features	Description
Output	4 ~ 20mA signal output with HART (2-wire).
Diagnostic	When the instrument fails, it outputs an alarm output current.
Configuration	Engineering units, measured medium, medium density, float density, measurement range, display, alarm values, etc., and the cumulative flow clearing.
Alarm	Alarm upper and lower limits can be set. When the value is below the lower limit or above the upper limit, an alarm current is output. Namur NE43 output (alarm current values 3.6mA / 22.5mA) or standard mode (alarm current values 3.8mA / 22mA) can be selected
Monitoring Dynamic Variable	Instantaneous flow, percentage, output current, cumulative flow, etc.
Current Calibration	The analog output current can be calibrated
Flow calibration function	2 – 16-point calibration options are available
Local Configuration	Configuration of engineering units, measurement range, display, alarm values, etc., and it has the function of clearing the cumulative flow. operation.)
LCD Display	Red light column LCD display
Data Backup and Recovery	The manufacturer can back up the original configuration information. When the instrument works abnormally due to illegal adjustment on site by the user, entering the damping value “5678” can restore the factory settings and return to the normal working state.
Others	The Instrument has Power-off protection function and flow cumulative function.

Technical Specifications

Items	Specifications
Basic Accuracy	Superior to ±2%
Stability	≤±0.5%;
Temperature Influence	≤±2%/50°C
Power Supply	9V – 32V DC
Power Supply Influence	Not greater than 0.01%/V
Output Load Variation	Not greater than 0.05%;
Operating Temperature	-20°C to +70°C
Optional Intrinsic Safety Explosion-Proof	Explosion-Proof Grade iaⅡCT5