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HJ101-2019

Chinese Standard: 'HJ101-2019'
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HJ/T 101-2019
NATIONAL ENVIRONMENTAL PROTECTION STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replacing HJ/T 101-2003
Technical specifications and test procedures for water
quality on-line automatic monitoring equipment of
ammonia
氨氮水质在线自动监测仪技术要求及检测方法
ISSUED ON: DECEMBER 24, 2019
IMPLEMENTED ON: MARCH 24, 2020
Issued by: Ministry of Ecology and Environment
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Technical specifications ... 9
5 Performance indexes and test methods ... 13
6 Operating manual ... 22
Technical specifications and test procedures for water
quality on-line automatic monitoring equipment of
ammonia
1 Scope
This Standard specifies the technical specifications, performance indexes and test
methods for water quality on-line automatic monitoring equipment of ammonia.
This Standard applies to guiding production and design, guiding to application type-
selection and implementing performance test.
The measuring range of water quality on-line automatic monitoring equipment of
ammonia shall include 0.1 mg/L ~ 150 mg/L, which can satisfy the monitoring
requirements for underground water, surface water, domestic wastewater and
industrial wastewater.
2 Normative references
This Standard referenced the following documents or clauses therein. For undated
references, the latest edition of the referenced documents (including all amendments)
applies to this document.
GB/T 9969, General principles for preparation of instructions for use of industrial
products
GB/T 13306, Plate
HJ 212, Data transmission standard for online monitoring systems of pollutant
HJ 535, Water quality – Determination of ammonia nitrogen – Nessler reagent
spectrophotometry
HJ 536, Water quality-Determination of ammonia nitrogen – Salicylic acid
spectrophotometry
expressed as relative standard deviation, provided that no unplanned artificial
maintenance and correction is carried out for instruments.
3.7
low level drift in 24 h
The mean value of the deviation absolute value between measured value and initial
value of instruments for the continuous measurement (0 ~ 20%) of upper limit of the
test range of a low concentration reference solution at specified periods, provided that
no unplanned artificial maintenance and correction is carried out for instruments.
3.8
high level drift in 24 h
The percentage of the mean value, in relation to the upper limit of the test range (80%
~ 100%), of the deviation absolute value between measured value and initial value of
instruments for the continuous measurement (0 ~ 20%) of upper limit of the test range
of a high concentration reference solution at specified periods, provided that no
unplanned artificial maintenance and correction is carried out for instruments.
3.9
memory effect
The degree of interference of the residues in the tubes of instruments on the next result
of measurement after the measurement of some reference solution or sample using
instruments.
3.10
interference of voltage
The deviations of measured values, which are obtained in the measurement of the
same reference solution using instruments under different supply voltages, from
measured value under reference voltage (220 V).
3.11
interference of pH
The deviation of measured values, which are obtained from the measurement of a
reference solution using instruments under different pH values, from measured value
from the measurement of a neutral reference solution (pH = 7).
3.12
management, data and running log query and output, and so on; meanwhile, they have
such functions as sample reservation triggering sampling. Control units are capable of
providing corresponding communication protocols when performing the above-
mentioned functions, and such communication protocols satisfy the requirements of
HJ 212.
4.2 Environmental conditions for service
Environmental temperature: 5°C ~ 40°C;
Relative humidity: 65% ± 20%;
Supply voltage: alternating voltage 220 V ± 22V;
Supply frequency: 50 Hz ± 0.5 Hz;
Water sample temperature: 0°C ~ 50°C.
4.3 Appearance requirements
4.3.1 The marking of instruments shall be as specified in GB/T 13306. Plates shall be
affixed to an appropriate, visible position. Plates shall include the following content:
a) category of power supply;
b) name and address of manufacturer;
c) name and specifications of instruments;
d) factory numbe......
Related standard:   HJ 471-2020  HJ 519-2020
   
 
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