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Water Treatment Airflow Sensor Monitoring
Brand: Moore IndustriesIn municipal and industrial wastewater treatment, aeration is part of the secondary treatment process.
The activated sludge process is the most common option in secondary treatment. In industrial use, a common method of aeration is air diffusion method, in which air is diffused into a receiving vessel containing counter-current flowing water, to remove dissolved gases, such as carbon dioxide, Hydrogen Sulfide or methane, and to oxidize dissolved metals such as iron.
If air header flow rates being supplied by compressors are not sufficient, the secondary treatment process will be incomplete and may yield contaminated water to rivers and other environmental water sources.
Features- Powers and Receives 4-20mA Signal from Airflow Sensor
- Dual field configurable alarms capable of alarming on
NAMUR failure output range from Airflow Sensor - Relays rated 5A, 250VAC
- 50msec response time
- Adjustable deadband for each alarm
Specifications
Brand
Repeatability
- Trip point repeats within ± 0.1 % of Full Scale
Stability
- Trip point within ± 0.2 % of Span per year
Burden
- 4-20 mA is 1 V, max
- 0-5 A is 0.01 V, max
Power Consumption
- 1.5 W, typical
- 2.5 W, typical with -TX option
- 3.5 W max, with -TX option
Deadband
- 1-20 % of Span standard
Alarm Response
- 50 msec for a step change of 10-90 % beyond trip point(s)
Line Voltage Effect
- 0.005 % per 10 % line change
Isolation
- 1500 Vrms between input, output and power
Maximum Input Overrange
- 200 % of Full Scale for DC Current input, 150 % of Full Scale for DC Voltage and AC Current inputs
Operating Range
- -20° C to +70° C (-4° F to +158° F)
Relative Humidity
- 0-95 %, Non-Condensing
Ambient Effect
- ± 0.007 % of Span/°C, typical, ± 0.015 % of Span/°C, max
RFI/EMI Protection
- Trip point not to be affected by more than 0.1 % of Span at 10 V/m, 20-1000 MHz
Trip Points
- Multiturn front panel potentiometers adjust trip point from 0-110 % of input span
Indicators
- Front panel LED(s) is ON when relay is energized
Weight
- 454 grams (1 lb)