TSQL Delete Large Number of Rows Without Filling the Transaction Log

Script to delete in chunks with commit every number of rows:

DECLARE @Count INT

Declare @for_delete INT

Declare @chunk_size INT

SELECT @chunk_size=10000

SELECT @Count = 0

select @for_delete=count(*)from [ION_Data].[dbo].[DataLog2] where TimestampUTC <‘2014-01-01’

While (@Count < @for_delete)

BEGIN

SELECT @Count = @Count + @chunk_size

BEGINTRAN

DELETE top(@chunk_size) FROM [ION_Data].[dbo].[DataLog2] where TimestampUTC <‘2014-01-01’

COMMIT TRAN