Routine:        Pb2
Function:       Program B2: Continuous viscosity measurement
Called by:      Main
Calls:          Meas, Print, Vischk, Wait       
Entry:          None
Exit:           As from Wait
Preserved:      None


PB2     LD      HL,VISCTY
; Measure, Check it falls within the set range, print, and wait for a keypress.
        CALL    MEAS
        CALL    PRINT
        CALL    VISCHK
        JR      Z, PB2
        LD      HL,VISCTY
        CALL    PRINT
        CALL    WAIT
        RET