EPSW-TS-RTD-6P-R1
Larson Electronics, LLC
Phone: (800) 369-6671
Fax: (903) 498-3364
www.larsonelectronics.com
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Calibration
The unit requires no calibration. An internal precision resistor continually self calibrates the unit. Calibration may be verified
by removing the sensor leads and testing the unit against a precision RTD simulator or a precision decade box. If the unit
is found to be out of calibration it must be returned to the factory for service.
ELECTRICAL CONNECTIONS
Connect wire leads in accordance with local electrical codes. For units supplied with both internal ground and
external bonding terminals, the ground screw inside the housing must be used to ground the control. The external
bonding screw is for supplementary bonding when allowed or required by local code. When external bonding
conductor is required, conductor must be wrapped a minimum of 180° about the external bonding screw. See below.
FRONT VIEW DETAIL
BOTTOM VIEW DETAIL
CLAMP
PLATES
LOCKWASHER
SCREW
CONDUCTOR
EU-Type Certificate, IECEx Installation Instructions:
Cable Connection
The cable entry device shall be certified in type of explosion protection flameproof enclosure “db”, suitable for conditions
of use and correctly installed. For ta ≥ 70°C cable and cable gland rated ≥ 75°C (MIN.) shall be used.
Conduit Connection
An Ex db certified sealing device such as a conduit seal with setting compound shall be provided immediately to the
electrical entrance of the transmitter housing. For
ta ≥ 70°C wiring and setting compound, in the conduit seal, rated ≥ 75°C shall be used.
Unused entries shall be sealed with an Ex certified blanking device rated for the appropriate zone, equipment group
and temperature classification and shall be installed per manufacturer instructions.
Note:
For ATEX/IECEx units only: When employed in a Zone 1, EPL Gb (db) application, the temperature class is
determined by the maximum ambient and or process temperature. Units are intended to be used in ambient of -20°C≤
Tamb ≤70°C. Units may be used in process temperatures up to 120°C providing the enclosure temperature do not
exceed 70°C. The standard Temperature Class is T6 Process Temp ≤80°C. Remaining temperature classes are,
Temperature Class of T5 Process Temp ≤95°C and Temperature Class T4 Process Temp ≤ 120°C. Refer to Certificate
No: Element IECEx EMT17.0007X for conditions of safe use for IECEx compliant units. All wiring, conduit and enclosures
must meet applicable codes for hazardous areas. Conduits and enclosures must be properly sealed. For outdoor or other
locations where temperatures vary widely, precautions should be taken to prevent condensation inside enclosure.
Electrical components must be kept dry at all times.
When employed in a Zone 20, EPL Da (ta) application, the equipment is to be used with a power source rated for a
prospective short circuit current of 10 kA. If the power source is rated for a prospective short circuit current of less than
10 kA, the end user or installer must mark the equipment with the prospective short circuit current rating of the power
supply it is used in conjunction with.
