BEGIN
       SET @x = (select ps_abk_ch1 from Т1) ;  
       SET @a = (select ps_abk_ch1 from Т2) ;
        .................
       SET @x83 = (select ps_abk_ch83 from Т1) ;  
       SET @a83 = (select ps_abk_ch83 from Т2) ;

   if ( @x !=  @a) then
     insert Т3 set ocher =  @x, ps_name='АБК',ps_ch = 'Датчик № 1',ps_shtamp =  @dat ;
     UPDATE   Т2 SET ps_abk_ch1 = @x;
    end if;

..................

END

create table dbo.T
(
 sensor_id int not null,
 sensor_Value float not null,
 constraint PK_T primary key (sensor_id)
);

create table dbo.T_log
(
 log_id int not null identity,
 sensor_id int not null,
 sensor_Value float not null,
 log_Timestamp datetime2 not null constraint DF_T_Log__log_Timestamp default (sysdatetime()),
 constraint PK_T_log primary key (log_id)
);
go

create trigger dbo.trT_OnUpdate
on dbo.T
after update
as
begin
 set nocount on;

 insert into dbo.T_Log
  (sensor_id, sensor_Value)
  select
   i.sensor_id, i.sensor_Value
  from
   inserted i join
   deleted d on d.sensor_id = i.sensor_id
  where
   i.sensor_Value <> d.sensor_Value;
end;
go

UPDATE ps_data SET ps_abk_ch1=Item(PS.ch1), ps_abk_ch2=Item(PS.ch2), ps_abk_ch3=Item(PS.ch3), ps_abk_ch4=Item(PS.ch4), ps_abk_ch5=Item(PS.ch5), ps_abk_ch6=Item(PS.ch6), 
            ps_abk_ch7=Item(PS.ch7), ps_abk_ch8=Item(PS.ch8), ps_abk_ch9=Item(PS.ch9), ps_abk_ch10=Item(PS.ch10),
            ps_abk_ch11=Item(PS.ch11), ps_abk_ch12=Item(PS.ch12), ps_abk_ch13=Item(PS.ch13), ps_abk_ch14=Item(PS.ch14), ps_abk_ch15=Item(PS.ch15), 
            ps_abk_ch16=Item(PS.ch16), ps_abk_ch17=Item(PS.ch17), ps_abk_ch18=Item(PS.ch18), ps_abk_ch19=Item(PS.ch19), ps_abk_ch20=Item(PS.ch20),
            ps_abk_ch21=Item(PS.ch21), ps_abk_ch22=Item(PS.ch22), ps_abk_ch23=Item(PS.ch23), ps_abk_ch24=Item(PS.ch24), ps_abk_ch25=Item(PS.ch25), 
            ps_abk_ch26=Item(PS.ch26), ps_abk_ch27=Item(PS.ch27), ps_abk_ch28=Item(PS.ch28), ps_abk_ch29=Item(PS.ch29), ps_abk_ch30=Item(PS.ch30),
            ps_abk_ch31=Item(PS.ch31), ps_abk_ch32=Item(PS.ch32), ps_abk_ch33=Item(PS.ch33), ps_abk_ch34=Item(PS.ch34), ps_abk_ch35=Item(PS.ch35),
            ps_abk_ch36=Item(PS.ch36), ps_abk_ch37=Item(PS.ch37), ps_abk_ch38=Item(PS.ch38), ps_abk_ch39=Item(PS.ch39), ps_abk_ch40=Item(PS.ch40),
            ps_abk_ch41=Item(PS.ch41), ps_abk_ch42=Item(PS.ch42), ps_abk_ch43=Item(PS.ch43), ps_abk_ch44=Item(PS.ch44), ps_abk_ch45=Item(PS.ch45), 
            ps_abk_ch46=Item(PS.ch46), ps_abk_ch47=Item(PS.ch47), ps_abk_ch48=Item(PS.ch48), ps_abk_ch49=Item(PS.ch49), ps_abk_ch50=Item(PS.ch50),
            ps_abk_ch51=Item(PS.ch51), ps_abk_ch52=Item(PS.ch52), ps_abk_ch53=Item(PS.ch53), ps_abk_ch54=Item(PS.ch54), ps_abk_ch55=Item(PS.ch55),
            ps_abk_ch56=Item(PS.ch56), ps_abk_ch57=Item(PS.ch57), ps_abk_ch58=Item(PS.ch58), ps_abk_ch59=Item(PS.ch59), ps_abk_ch60=Item(PS.ch60),
            ps_abk_ch61=Item(PS.ch61), ps_abk_ch62=Item(PS.ch62), ps_abk_ch63=Item(PS.ch63), ps_abk_ch64=Item(PS.ch64), ps_abk_ch65=Item(PS.ch65),
            ps_abk_ch66=Item(PS.ch66), ps_abk_ch67=Item(PS.ch67), ps_abk_ch68=Item(PS.ch68), ps_abk_ch69=Item(PS.ch69), ps_abk_ch70=Item(PS.ch70), 
            ps_abk_ch71=Item(PS.ch71), ps_abk_ch72=Item(PS.ch72), ps_abk_ch73=Item(PS.ch73), ps_abk_ch74=Item(PS.ch74), ps_abk_ch75=Item(PS.ch75), 
            ps_abk_ch76=Item(PS.ch76), ps_abk_ch77=Item(PS.ch77), ps_abk_ch78=Item(PS.ch78), ps_abk_ch79=Item(PS.ch79), ps_abk_ch80=Item(PS.ch80), 
            ps_abk_ch81=Item(PS.ch81), ps_abk_ch82=Item(PS.ch82), ps_abk_ch83=Item(PS.ch83)