Metso 3300 Series, Руководство пользователя

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MANUAL
Manual Series 3300 1. GeneRAL InFoRMAtIon
1. General information
1.1 Description
The series 3300 Concentration TCU is designed for con-
centration measurement based on electrical conductivity
and temperature using Metso 4-electrode conductivity
sensors series 4300. It is designed for wall mounting or
panel mounting in industrial plant environments.
The TCU has four set-up modes, three for concentration
and one for conductivities. Each of the four set-up modes
has access to individual setting of temperature compen-
sation, output range, alarm, and calibration. The set-up
modes are selectable remotely or from the keypad.
The TCU has two 4-20 mA current outputs, a display, and
a keypad. The line-powered version has two relays for
alarms.
Optionally the HART© protocol for field device trans-
mitters can be implemented. For the full specifications,
please refer to 915.19 HART Field Device Specification for
series 3000.
HART© communication: Add “H” to the type number.
1.2 Sensors
Sensors are based on the 4-electrode principle according
to which the current and the voltage are measured across
separate electrodes. That eliminates the errors from the
polarization effect that is generally a problem at high
conductivities.
The value of the cell constant is stored in the sensor. This
makes all sensors interchangeable without sacrificing
accuracy and without the need for recalibration or re-
entering the cell-constant when exchanging the sensor.
A large selection of sensor types is available meeting the
needs for almost any application.
1.3 Temperature compensation
In an electrolyte, all ions present will contribute to the
conductivity. Different ions will contribute with different
amounts and the amounts will vary with temperature.
When the conductivity is used for the calculation of a
chemical concentration, it is necessary to calculate what
the conductivity would be at a fixed temperature (the
conductivity is temperature compensated). This con-
ductivity is calculated from measured conductivity and
temperature. As different ions have different temperature
dependences, the temperature compensation is to be
selected to fit the actual application. The temperature is
measured with a Pt-1000 resistor in the sensor.
1.4 Applications
The type 3300 Concentration TCU is designed for applica-
tions in the chemical industry, mainly strong acids, but
bases and salts are also covered.
The values to do the signal conditioning for each applica-
tion are stored under a recipe No. The values control the
measuring range, the temperature compensation, the
linearization, the expansion, and the conversion to engi-
neering units.
Concentration recipes
If non-standard recipes are specified they are implemented in Set-up 1
Conductivity temperature compensation
TCU versions type No
Loop-powered Line-powered
Wall mounted 3307 3317
Panel mounted 3308 3318
Set-up 1, 2, and 3
Recipe Application Span Temperature
196.03 HCl 0-15 % 10-80°C
194.59/2 HCl 25-40 % 0-60°C
194.60 HCl 30-36 % 15-45°C
194.56 HF 99.7-100 % 0-50°C
194.56/2 H2O in HF 0-3000 ppm 0-50°C
196.62 HNO3 0-20 % 0-90°C
194.51/3 HNO3 50-75 % 0-65°C
194.70 P2O5 45-60 % 20-80°C
196.42 H2SO4 0-10 % 0-100°C
196.43/3 H2SO4 0-20 % 15-80°C
194.31 H2SO4 50-80 % 25-60°C
194.28 H2SO4 72-82 % 20-70°C
194.10 H2SO4 92-100 % 20-70°C
194.06 H2SO4 93-100 % 20-110°C
196.59 H2SO4 0-230 g/l 0-50°C
194.25 SO3 (Oleum) 18-34 % 20-80°C
194.26 SO3 (Oleum) 55-70 % 25-80°C
196.58 NaOH 0-10 % 0-100°C
194.61 NaOH 20-40 % 20-50°C
194.62 NaOH 45-55 % 40-75°C
196.56 NaCl 0-10 % -5+100°C
196.60 SO2 0-25 g/l 0-50°C
Set-up 4
Reference temperature 25°C
OFF
STD Salt
0 - 200°C
IEC 746 BII 0 - 150°C
NaOH 1% 0 - 150°C
HNO3 1% 0 - 150°C
H2SO4 1% 0 - 150°C
H3PO4 1% 0 - 150°C