Process
Buoy PBS1 for NH4 measurement.. -
measure ammonia directly in the sample..
The
Process Buoy PBS 1 measures ammonium through direct immersion in aeration
basins or final effluent. The buoy is filled by the hydrostatic pressure
of the water, and emptied by air pressure. This eliminates the need
for pumps in the wastewater. Valves contact only air, reagents, and
calibration standards, assuring a high level of reliability.
For
ammonia measurement the STIP Process Buoy PBS 1 (NH4) is equipped
with a purgeable cell, in which wastewater is separated from sludge
and solids before it is fed into the reaction cell. During the ammonium
measurement, the necessary pH value is accurately regulated to assure
high measuring accuracy with low reagent consumption. The buoy automatically
calibrates itself daily using the standard addition method, and at
the same time compensates for variability in the wastewater.
Standard
Features
Measurement
directly in aeration basins
Automatic
self-calibration using standard addition method
Measuring
range: 0.1 - 50 mg/liter NH4 - N
Analysis
delay time: 5 minutes
No sample
preparation, pumps, or transfer lines
6-hour on-screen
graph, scrollable through 14 days
90 day data
storage on diskette
Programmable
concentration alarms
Applications
Aeration
basins
Final effluent
List
of articles - nutrient monitoring applications
Options
and Accessories
Freeze protection
cap for Process Buoy
Baffles for
mounting in quiet zone in turbulent water
Average current:
0.3 A @ 115 VAC, , 0.15 A @ 230 VAC for single buoy system; 0.4
A/0.2 A for dual-buoy system
Maximum current:
0.4 A @ 115 VAC, , 0.2 A @ 230 VAC for single buoy system; 0.6
A/0.3 A for dual-buoy system
Power load:
45 W for single buoy; 68 W for dual buoy
Enclosure:
IP65
Protection
class: 1 (per IEC 4010)
Immunity
to voltage change: EN 50022
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
Dimensions
and weights:
Process Buoy:
830 x 130mm (length x diameter); approx. 10.8 kg (filled)
Controller,
single-buoy: 264 x 360 x 345 mm (W x H x D); 12.0 kg
Controller,
double-buoy: 360 x 400 x 345 mm; 14.0 kg
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
