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Máy đo Nitơ Amoniac trực tuyến NHNG-3010
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Description
NHNG-3010 ONLINE AMMONIA NITROGEN METER
NHNG-3010 online and automatic ammonia nitrogen meter to monitor NH3-N,BOQU has completely independent intellectual property right.it’s the world-class instrument to measure ammonia nitrogen (NH3-N).the working principle is The peristaltic pump of the instrument delivers the release liquid (diluted NaOH solution) as the carrier fluid, and the injection valve rotates according to the set number of times to form a mixture of the NaOH solution and the water sample, and is released when the mixing belt passes through the separation chamber of the gas-liquid separator. The ammonia gas in the sample is taken out, and the ammonia gas is passed through the gas-liquid separation membrane and then received by the receiving liquid (BTB acid-base indicator solution), and the ammonium ion causes the pH of the solution to rise, and the color changes from yellow-green to blue. The ammonium-enriched receiving solution is sent to the flow cell of the colorimeter, and the photovoltage change value is measured to determine the NH3-N content in the sample.
Standard
Salicylic acid spectrophotometric detection
Measuring range
0-300 mg/L（0-10mg/L;10-150mg/L;10-300mg/L) (customized if over range)
Accuracy
≤±10% when ≥0.2 mg/L, ≤±0.02 mg/L＜0.2 mg/L
Repeatability
≤±3%
Stability
≤±10% in 24 hours
Measurement period
The minimum measurement period is 50 minutes, according to the actual water sample, The digestion time can be modified from 5 to 120 minutes.
Sampling period
Time interval(55~9999min adjustable by yourself) and Integral time measurement mode;
Calibration period
Adjustable in 1~99days;
Maintenance period
Usually one time per month and 30 minutes each time
Output
4~20mA( 2 ways) RS232,RS485
It should be indoor and temperature can be adjustable. The recommend temperature is +5~28℃;humidity≤90%（no dew）
Power
AC220±10% V，50±10% Hz，5 A;
Dimension size
Height 1450×Width510×Length 450 mm;
Data saved
The data can be saved when abnormal alarms and power off.
Display
Touch screen and Command Input
Other
When Reset after abnormal alarm and power on after off, the instrument automatically discharges residual reactants in the instrument and automatically resumes working status.
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