GENION 1 is
an on-line analyzer for continuous NH 4 measurement in difficult
wastewater applications, using a gas-selective electrode. The analyzer
automatically calibrates itself daily using a standard.
The bypass is
the fast feed loop to the analyzer. The peristaltic pump transfers
a portion of the sample to the measuring cell. In the mixing cell
wastewater and dilution water are combined. Oil and fat are separated
by the rotation of the agitator.
The rotating
slit is the inlet to the measuring cell and the only flow restriction
inside the system. The slit is continuously cleaned by the rotary
motion of the axle.
In
the measuring cell, the NH4 concentration of the wastewater is maintained
at a constant, low level. The desired value of the electrode is thus
also maintained at a high-sensitivity bias point. The actual value
is calculated from the NH 4 concentration and the dilution ratio.
The measuring point corresponds to the calibration point.
Standard
Features
Response
time - 5 minutes
Measuring
range - 0.3 - 1000 mg/liter NH 4 - N
Sample preparation
with no ultrafiltration
Automatic
calibration
Digital and
analog output signals for external alarms and controls
NH4 - N Graphs
and current value displayed continuously on LCD screen
Up to 14
days historical data can be recalled and displayed graphically
Applications
Increase
the efficiency of water/wastewater treatment to reduce process
costs in both industrial and municipal applications.
Provide warning
of Ammonium spills, to protect expensive processes and equipment
in addition to monitoring for regulatory compliance.
List
of articles - nutrient monitoring applications
Options
and Accessories
Sample preparation/bypass
PA-2 or PA-3
Equipment
platform - choice of free-standing rack/cart, or a hinged bracket
for wall mounting
Specifications
of Genion 1NH4 analyser
NH4 - N measurement
ranges
Low concentration
option: 0.3 - 10 mg/liter NH4 - N
Standard
range: 3 – 300 mg/liter NH4 - N
High concentration
option: 10 – 1000 mg/liter NH 4 - N
Detection
limit: 0.3 mg/liter NH 4 - N (with special configuration)
with PA-2
sample preparation: 757 x 1090 x 400 mm; 70 kg
Electrical
and standards conformity
Mains power:
230 VAC/50 Hz or 60Hz
Average current:
0.18A
Maximum current:
0.27A
Enclosure:
IP54 (per DIN 40050)
Protection
class: 1 (per IEC 1010)
Immunity to voltage change: EN50022
EMC emission:
EN 50081-1, 12/96
EMC noise
immunity: EN 50082-2, 12/96
Certification:
CE Mark (Declaration of conformity)
Test method:
per DIN/VDE 0701
Data display,
inputs and outputs
Display:
LCD graphics display, 16 lines by 40 characters, backlit
Keypad: 21 key, 13 x 13 mm
Data presentation:
6-hour graph (14-day scrollable); current value with 5-digit resolution
Data storage:
10 days in RAM; 90 days with diskette drive (data interval 2 minutes)
Logging of
warnings, malfunctions, limit value alarms and calibrations for
last 4 weeks (90 days with diskette drive), alerts for leakage,
defective probe, general error for outside of measuring range
Analog outputs:
0 - 20 mA or 4 - 20 mA selectable, electrically isolated load
max 500 ohm
Limit value
alarms: Dry contact relay (normally closed) for high limit, low
limit, and slope
Diskette
drive: PC-compatible 3.5" diskette drive for data storage
Computer interface: RS 232C for data output and remote control
On-line
BOD for process control
"We
also review the analyzer data on a monthly basis and compare the results
with routine laboratory BOD5 data for the same time period. We have
found there to be an excellent correlation between the lab and the
analyzer results."
