Campbell Scientific CR10 CR10 Measurement and Control - Page 210

APPENDIX

B.

CRlO

PROM SIGNATURE

AND OPTIONAL

SOFTWARE

8.3

DESCRIPTION

OF LIBRARY

OPTIONS

NOT IN

STANDARD MANUAL

The

following

is a brief description

of

library

options

not

found

in

the

standard

manual.

lf

the

CR10 PROM

contains

one

of

the following

options then

detailed

information on the special

option(s)

will

be placed

in

Appendix

H.

13,14

ADD

R,

S, &

B

THERMOCOUPLE

LINEARIZATIONS

In

addition to

the

linearizations for the

T,

E,

J,

.

and

K

thermocouples,

Instructions

13

and

14

have

the

R, S, and

B

thermocouple

linearizations.

15

CONTROL

PORT

SERIAL l/O

(for smart

sensor)

This

Instruction allows sending and receiving

half duplex data through the

control

ports at 300

or

1200 baud.

1

05,106

SDIl2

RECORDER/SENSOR

Instruction

105

allows

the

CR10

to

use

its

control ports to

collect

data from

an

intelligent

sensor

which

uses

the

SDl12 communication

protocol.

Instruction

106

allows

the

CR10

to

behave as

an SDl12 sensor.

62 OOVARIANCE/CORRELATION

This

Instruction

calculates

1)

means,

2)

variances, 3) standard deviations,

4)

covariances and 5) correlations for a set of

input values and stores

the

results

in

Input

Storage.

Subintervals are allowed

for

convenient high pass filtering.

81 RAINFLOW

HISTOGRAM

The

Rainflow counting

algorithm

is

a

means

of

estimating cumulative damage

latigue

by

processing

strain

measurements

to

produce

a

histogram

in

which closed stress/strain

hysteresis loops are counted by amplitude

ranges. The

histogram can be two dimensional,

with each amplitude range sorted on the basis

of

average strain during the

cycle.

(The name,

Rainflow, comes from

the

idea that

a

strain/time

plot

with

strain

as

the

y

axis looks like

a

pagoda

roof.

Then, the

algorithm

is

somehow

analogous

to

the

way

in

which

rain

flows down

the

roof.)

The

lnstruction can

either

process

a

swath of

data

from

measurements made

with the

burst

measurement instruction,

or

it

can

be used

"on

line", processing a new reading with each

execution interval.

99

SATELLITE

TRANSM,ITTER INTERFACE

Interface to allow output to GOES satellite via

the Valcom satellite transmitter.

64Hz

RESET

ON

PULSE COUNTERS

The

reset interval

on

the

pulse counters

is

changed

from

1/B

second

to

1164

second.

This

allows reading

the

pulse counters

on

intervals

shorter than 0.125 second and allows counting

frequencies

up

to

16

kHz with the 8 bit option.

The quiescent current drain

of

the

CR10

is

increased to

5

mA when

the

pulse

count

instruction is

used.

A

hardware modification to

the

CR10

is

also

required.

*4

PARAMETER ENTRYTABLE

This option

allows

instruction parameters

to

be

flagged.

The values

to

use for

the

parameters

are then

entered

into

a

table

in

the

*4

Mode.

This

feature

is

of

use when

the

same program

is used for

a

number of stations but individual

changes need

to

be made for each station

(e.9.

identical measurements

are

made at each

station but certain sensors

do

not have

interchangeable

calibrations). lt

is

easier and

safer to train someone to enter the correct

values

in

the table format

than

it

would

be

to

have them attempt to alter the program.

B-2

Campbell Scientific CR10 CR10 Measurement and Control - Page 210

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