INTRODUCTION
ExTempMini intrinsically safe non-contact infrared temperature sensors measure the
temperature of an area of the surface of a solid or liquid, and transmit this as a linear 4-20 mA
output.
Temperature ranges from -20°C to 1000°C are available. All models have an adjustable
emissivity setting, and may be used to measure a wide variety of target materials, including
food, paper, textiles, plastics, leather, tobacco, pharmaceuticals, chemicals, rubber, coal,
asphalt and paint.
A choice of optics is available to measure small or large targets at short or long distances.
The optional LCT Loop Configuration Tools (USB and RS-485 adapters) and free software allow
the ExTempMini to be connected to a PC, PLC or SCADA system for temperature indication,
sensor configuration and data acquisition.
These sensors are designed primarily for use in hazardous areas in conjunction with a
suitable Intrinsically Safe isolator. All models have been certified Intrinsically Safe for use in
gas hazardous areas by Certification Management Ltd. They comply with the European ATEX
Directive 2014/34/EU and are covered by certificates for IECEx (international) and UKCA
(United Kingdom). The ExTempMini Series is also approved for use in Japan (JNIOSH-
TR-46-1:2020 (General requirements); JNIOSH-TR-46-6:2015 (Intrinsic Safety “i”)).
IMPORTANT INFORMATION FOR USE:
Voltage
MUST
be supplied by a suitably rated safety isolator.
For re-configuration of the sensor, the LCT
MUST
be connected in the safe area, behind the
protection of a safety isolator.
The sensing head
MUST NOT
be opened. Care should be taken to avoid inadvertently
loosening the cable gland when tightening locknuts.
Do not attempt to repair a faulty unit. Contact the vendor to arrange a return.
CONFORMANCE TO REQUIREMENTS
The sensing head has passed a high voltage withstand test up to 700 VDC.
SPECIFIC CONDITIONS OF USE
The main enclosure of this equipment is not capable of withstanding the 500 VAC / 700 VDC
insulation test required by IEC 60079-11:2011 Clause 6.3.13. This shall be taken into account
when installing the equipment. Power to the equipment must be supplied by an intrinsically
safe isolator. The equipment is not compatible with intrinsically safe Zener barriers.
CONDITIONS FOR SAFE USE (JAPAN)
i.
The main enclosure does not meet a 500 Vrms dielectric strength test. This shall
be taken into account when installing the equipment.
ii.
The supply cable used shall have a temperature rating > +70 °C.
SAFETY PARAMETERS:
The device must not be used outside of the ambient temperature range (Ta), or subjected to
voltages, current or power greater than those listed below, in order to ensure safe operation
of the device:
Ui
=
28 V
Ta
=
-20°C to +70°C (Main Enclosure)
-20°C to +180°C (Sensing Head)
(see Hazardous Area Classification)
Ii
=
93 mA
Ci
=
5.17 nF
Pi
=
0.651 W
Li
=
1.99 µH
2
