Instruction manual
SM425 INSTRUCTION MANUAL    INTRODUCTION   
viii 42500001 REV A 
NOTICE 
• Specification check. 
When the instrument arrives, unpack with care. Verify the instrument has not been damaged during 
shipment. Verify the specification matched the order and required accessories are not missing. 
Specifications can be checked by the model code on the nameplate. Refer to Section 0 
“Specifications: for the list of model codes. 
•  Details on operation parameters 
When the SM425 Separate type Oxygen Analyzer arrives at the user site, it will operate based on the 
operation parameters (initial data) set at the factory. 
Ensure this configuration is suitable for the application before any testing is performed. Set the 
instrument parameters for appropriate operation where necessary. 
For details to set data, refer to sections 7 to 10. 
Document all user changes to the operational configuration. 
WARRANTY
•  The warranty statement for this product can be found at the Teledyne Monitor Labs web site: 
http://www.teledyne-ml.com/ 
•  Customer shall notify TML of a defect within the warranty period and request a return authorization 
number and designated TML repair facility. Customer shall return the defective part or parts to the 
designated TML Customer Service Facility as set forth below, freight prepaid by the customer. TML 
will prepay the return freight. 
•  TML will notify the customer of TML’s decision to repair or replace the defective part and the 
expected shipment date. 
•  At the customer’s request, TML may elect to repair defective product(s) located in North America on 
site, in which case travel expenses, travel time, and related expenses incurred by TML personnel 
(excluding repair time) shall be paid by the customer. 
Teledyne Monitor Labs Service Response Center 1-800-846-6062 
www.teledyne-ml.com
35 Inverness Drive East, Englewood, Colorado 80112-5189 USA 
Tel: 303-792-3300, Fax: 303-799-4853 










