18 concentration measurement (detailed setup), 18 concentration measurement (detailed setup) -98 – Yokogawa RotaMASS 3-Series User Manual

Page 170

7. pArAMETEr dESCrIpTION

7-98

IM 01R04B04-00E-E 8th edition March 01, 2011 -00

7.18 Concentration measurement (detailed Setup)

Concentration meas
(only for option/CST or /Cxx)

To set the functions of concentration measurement.

For xx=00 to 99 a customer specific or defined table is stored in the
converter in factory.
For /CST temperature coefficients have to be determined by the customer.

Concentration meas unit
(only available for option/CST)

Select:

°Brix, Wt-% sol, vol% sol, Wt-%, vol%

Concentration meas format

Select:

xxxxxxx, xxxxx.X, xxxx.XX, xxx.XXX, xx.XXXX, x.XXXXX

Concentration meas lrv (low
range value)

Set a concentration value to the 4 mA or 0 Hz

Concentration meas
(upper range value)

Set a

concentration value to the 20 mA or xxxxx = Hz.

Abs(Urv-lrv) ≥ 10%

Concentration meas damping

Set the damping time in s. Damping time affects outputs and display.
After 5 times damping time the given value is displayed (t=63%).

Concentration meas lowcut

Set the low cut. Low cut affects outputs and display.

Concentration meas alm 1 sel

Select:

No function, More than, less than

Concentration meas alm 1 crit Select a concentration alarm level. What happens in case of an alarm

has to be defined in Status out (7.12, 7.13).

Concentration meas alm 2 sel

Select:

No function, More than, less than

Concentration meas alm 2 crit

Restrictions:
All alarms have to be in 0-110%
of URV-LRV
Alarm criteria 2 must always be
larger than alarm criteria 1.

Select a concentration alarm level. What happens in case of an alarm
has to be defined in Status out (7.12, 7.13).

Concentration meas setup
(only for option /CST)

To setup the coefficients used for calculation of concentration using the
Standard Concentration Measurement.

reference temperature

Set the temperature where the reference density of both components of
the mixture has been determined.

ref. density carrier

Set the density of the carrier liquid determined at the reference temperature.

Temp. coeff. a carrier

Set the linear temperature coefficient of the density of the carrier liquid.

Temp. coeff. b carrier

Set the squared temperature coefficient of the density of the carrier liquid.

ref. density product

Set the density of the product determined at the reference temperature.

Temp. coeff. a product

Set the linear temperature coefficient of the density of the product.

Temp. coeff. b product

Set the squared temperature coefficient of the density of the product.

For more information on concentration measurement see TI "Concentration Measurement" TI 01R04B04-04E-E.