STIP-toc functions
as a high temperature TOC analyzer without ultra- or fine filtration.
A large sample stream is taken in via an automatically self-cleaning
coarse filter in the sample bypass. In the stripping cell, inorganic
carbon is removed through acidification and sparging.
In the rotating
slit filter, a substream for analysis is split off directly before
the furnace. In the furnace the analysis stream is thermally and
catalytically oxidized. After the evolved gas mixture is dried and
neutralized, it is measured as CO2 in the IR detector, and reported
as TOC. The system automatically calibrates itself daily with two
TOC standards (two point calibration).
Standard
Features
Temperature
selectable from 600° C to 900° C (1100° F to 1650°
F)
Salt trap
is easily accessible and can quickly be changed without shutting
down
Catalyst
is attached to the outside of the furnace, increasing its useful
life and facilitating exchange.
Self-cleaning
rotating slit filter allows only particles of defined size into
the furnace.
Digital and
analog output signals for external alarms and controls
Sample preparation
with self-cleaning coarse filter
Applications
solids-containing
municipal wastewater
industrial
wastewater with dissolved salts
river water
cooling water.
Provide warning
of organic spills, to protect expensive processes and equipment
in addition to monitoring for regulatory compliance
List
of articles - On-line TOC applications using High temp TOC Stiptoc
analyser
Options
and Accessories
PA2 or PA3
Sample Filter - Required where sample contains particles larger
than 200 microns.
Two stream
option
Isco Carrier
Gas Converter - cleans and reduces the CO2 content of compressed
air. This accessory must be installed in the air supply line when
on-site compressed air is used.
BIOX-1010
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:
3.6 A
Maximum current:
8.15 A
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)
Monitoring:
Logging of warnings, malfunctions, limit value alarms and calibrations
for last 4 weeks (90 days with diskette drive), alerts for leakage,
deficient wastewater, incorrect reactor temperature, incorrect
oxygen reading, broken membrane on oxygen sensor
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."
