ExTempMini, Intrinsically Safe Infrared Temperature Sensor for High Ambient Temperatures

► Temperature range: -20°C to 1000°C
► Sensing head for use in ambient temperatures up to 180°C
► ATEX, IECEx and UKEX certified up to Zone 0 (gas) JapanEx certified
► 4-20 mA output, two-wire, loop-powered
► Optional RS-485 network adapter and USB configuration tool
► Supplied with 5 m, 10 m or 25 m sensing head cable
► Stainless steel 316 housing, ideal for offshore applications
► Not designed or approved for fever detection

Specifications
Measurement Temperature Range: -20°C to 1000°C (see table of Model Numbers)
Output: Two-wire 4 to 20 mA (loop powered)
Maximum Temperature Span: 1000°C
Minimum Temperature Span: 100°C
Accuracy: ± 1°C or 1%, whichever is greater
Repeatability: ± 0.5°C or 0.5%, whichever is greater
Emissivity Setting Range: 0.20 to 1.00 (pre-set to 0.95)
Emissivity Setting Method: User configurable via optional USB / RS-485 adapters
Response Time, t90: 240 ms (90% response)
Spectral Range: 8 to 14 μm
Supply Voltage: 12 to 24 V DC ± 5%
Minimum Sensor Voltage: 11.4 V DC
Maximum Current Draw: 25 mA

Mechanical Specifications
Construction: Main Enclosure: Painted Aluminium
Sensing Head: Stainless Steel 316
Major Dimensions: Main Enclosure: 99 x 65 x 35 mm
Sensing Head: Ø 20 x length 69 mm including cable gland (see Dimensions)
Mounting: Main Enclosure: 2 x mounting holes, use M4 socket head screws.
Sensing Head: M20 x 1.5 mm thread, length 20 mm, supplied with two mounting nuts.
Cable Length (Sensing Head): Choice of 5 m, 10 m or 25 m factory-fitted. Contact Calex for information about extending cable.
Weight with Cable: 475 g (5 m cable), 625 g (10 m cable), 1075 g (25 m cable)
Cable Connections: Removable screw terminal blocks (see Connections). Conductor size 22 AWG to 14 AWG (0.326 mm2 to 2.08 mm2)
Output Cable Gland: Suitable for cable diameters 3.5 to 7.0 mm

Environmental Specifications
Environmental Rating: Main Enclosure and Sensing Head: IP65 (NEMA 4)
Ambient (Operating) Temperature Range: Main Enclosure: 0°C to 70°C
Sensing Head: 0°C to 180°C
Ambient Pressure Range: Main Enclosure and Sensing Head: 80 kPa (0.8 bar) to 110 kPa (1.1 bar)
Relative Humidity: Main Enclosure and Sensing Head: Max. 95% non-condensing
CE Marked: Yes
RoHS Compliant: Yes

Electromagnetic Compatibility Standards:
Conforms to EN 61326-1, EN 61326-2-3 (Industrial).

► Optics:
EXM8-21:   2:1 optics
EXM8-201:   20:1 optics

► Temperature Range:
User-configurable temperature range within the limits -20°C to 1000°C, factory set to:

-LT:   -20°C to 100°C
-MT:   0°C to 250°C
-HT:   0°C to 500°C
-XT:   0°C to 1000°C

-ST:   Special pre-set temperature range between limits -20°C and 1000°C (please specify range on purchase order)

► Sensing Head Cable Length:
The sensing head and electronics module are calibrated together as a pair. The sensing head cable length may not be modified by the user. Contact Calex for more information.
-5:  5 m cable
-10:  10 m cable
-25:  25 m cable

► Example Model No.:   EXM8-201-MT-25
ExTempMini intrinsically safe infrared temperature sensor with miniature sensing head and separate electronics module.
2-wire 4-20 mA output, 20:1 optics, temperature range factory set to 0°C to 250°C and configurable within the limits -20°C to 1000°C.
User-configurable via optional USB adapter.
Sensing head cable length 25 m.

Typical Applications

► Petrochemical - condition monitoring:
Bearing, gearbox and motor housing surface temperatures in refineries and chemical plants can be monitored without contact, eliminating the need to replace contact probes that are easily damaged by vibration.

► Petrochemical - liquid storage and processing:
The sensing head can be positioned in a Zone 0 environment such as the top of a tank of hazardous liquid or chemical reactor, to measure the surface temperature of the liquid, in conjunction with suitable air purging or protective viewport.

► Gas cylinder filling:
The surface temperature of cylinders of flammable gases is monitored with the ExTempMini as they are filled. The Group IIC, T4 (or T3 depending on ambient temperature) classification of the sensing head makes it suitable for almost all gases including propane, butane, hydrogen and acetylene. The temperature of each cylinder is measured on the filling rig to help detect fault conditions in filling, to calculate the final filled volume (in conjunction with the pressure), to ensure the volume is repeatable, and to improve the filling rate.

► Automotive painting:
Solvents in automotive painting can lead to the presence of a hazardous gas Zone. The intrinsically safe ExTempMini may be used to measure the temperature of containers and vessels, the surface temperature of liquids, and the temperature of painted surfaces.

► Offshore:
The stainless steel 316 housing of the ExTempMini's sensing head, and its intrinsically safe certification, make it well-suited for use on offshore platforms.

► Notes:
ExTempMini is certified for gas hazardous areas only, and not dust. The above information about Applications may include some Dust applications, but the sensor is not suitable for those.