ThermoProbe TL1 - Manual

09/2012, JK
TL1 SERIES INSTRUCTIONS
INTRODUCTION
This manual describes the basic function, use and safety instructions for models TL1-A, TL1-W and TL1-R portable digital reference
thermometer instruments. These ThermoProbe instruments are intended for use in both hazardous (flammable) and non-hazardous
areas under dry conditions at temperatures between -20 to 40°C. The instruments are not intended for use in permanent outdoor
installations and are not intended or tested for icing conditions.
Additional means of protection should be used where the equipment
may be exposed to excessive external stresses (e.g. vibration, heat, impact, etc.).
SAFETY INFORMATION BEFORE USE
ThermoProbe thermometers are designed for safe operation in hazardous locations (Potentially Flammable or Explosive). The user
must have a working knowledge of appropriate safety instructions.
a) Care should be taken upon installation of the instrument to prevent excessive heat exposure. The influence of radiated heat
may affect the safety of the instrument. See IEC 60079-14.
b) The TL1 thermometer stem should not be immersed past the plastic sensor mount (stainless fitting for TL1-W).
c) The instrument shall be checked concerning severe defects; check that instrument is complete, has good batteries, etc. If
necessary, check measurement accuracy. If any defects are found, the instrument should not be used until repairs have been
made.
d) Power source must be removed before performing any maintenance.
e) Exchange of components other than the batteries may compromise ATEX/IECEx certification and shall only be undertaken
by Thermoprobe or one of its qualified service providers. See also “Authorized Repair” section.
INTRINSIC SAFETY
Intrinsically safe equipment is defined as "equipment and wiring which is incapable of releasing sufficient electrical or thermal
energy under normal or abnormal conditions to cause ignition of a specific hazardous atmospheric mixture in its most easily ignited
concentration." (ISA-RP12.6) This is achieved by limiting the amount of power available to the electrical equipment in the hazardous
area to a level below that which will ignite the gases.
In order to have a fire or explosion; fuel, oxygen and a source of ignition must be present. An intrinsically safe system assumes the
fuel and oxygen is present in the atmosphere, but the system is designed so the electrical energy or thermal energy of a particular
instrument loop can never be great enough to cause ignition.
Safety Approvals for TL1 Thermometers:
II 2 G Ex ib IIC T4
Applicable Standards are: Agency or Safety Designation
IEC 60079-0:2007 Ed. 5 IECEx
IEC 60079-11:2006 Ed. 5 IECEx
EN 60079-0: 2009 Europe: ATEX
EN 60079-11:2007 Europe: ATEX