-20°C to 1000°C
RS485 Modbus RTU
±1% of reading or ±1ºC whichever is greater
± 0.5% of reading or ± 0.5°C whichever is greater
Response Time, t90
125 ms (90% response)
6 to 28 V DC
9600 baud (other configurations available upon request)
Modbus Data Format
8 data bits, no parity, 1 stop bit (other configurations available upon request)
Via PM180 touch screen, or directly via RS485 Modbus
Emissivity Setting, Averaging, Peak/Valley Hold Processing, Reflected Energy Compensation
Please note: The given measured spot size contains 90% of the energy detected by the sensor. We normally recommend the target is at least twice as large as the given measured spot for maximum accuracy.
Sensors may be used at longer distances than the above diagrams show. There is no maximum measurement distance in clean air; this is because Calex sensors detect only the wavelengths of infrared radiation that are not absorbed by the atmosphere.
18 mm diameter x 45 mm long (excluding cable gland)
M16 x 1 mm pitch
1m (longer lengths available to order)
|Ambient Temperature Range
||PyroMiniBus sensor: 0°C to 120°C including cable
PMBHUB junction box: 0°C to 80°C
||95% max. non-condensing
Electromagnetic Compatibility Standards
EN61326-1, EN61326-2-3 (Electrical Equipment for Measurement, Control and Laboratory Use – EMC Requirements – Industrial)
The PyroMiniBus may be installed as a new temperature monitoring system, or integrated into an existing Modbus network.
With two Modbus interfaces, the PM180 makes an ideal local display for a group of sensors as part of a larger system.
The PMBHUB junction box makes it easy to connect the system together.
Never miss a critical temperature event. In condition monitoring applications, the PyroMiniBus system is an always-on solution that can replace manual checks with a handheld thermometer or expensive thermal imager.
For example, some typical uses include:
Fibreglass impregnated with epoxy is cured in an oven to increase strength. PyroMiniBus sensors are placed inside the oven at up to 120°C, to build up a temperature profile at many points on the entire surface of the workpiece, and to communicate the measured temperature to the heating system that controls the hot air blowers in the oven. Industries include boatbuilding and aerospace as well as many others.
Check the temperature profile of bakery products at multiple points along a conveyor oven.
Corrugated board manufacturing
Monitor the web temperature along an entire corrugator, with local displays for each section of the production line, and centralised monitoring in the control room. Sensors withstand 120°C, and can be used in high-temperature areas such as single facers without cooling.
Monitor the temperature of busbar joints in switchgear cabinets. Hundreds or even thousands of points can be monitored on the same network using the PyroMiniBus system.
A large system of PyroMiniBus sensors can monitor the paint curing process at several points.
Monitor temperatures around the entire vehicle in environmental test chambers.
A network of PyroMiniBus sensors can monitor all the bearing temperatures on a machine, a runout table, or the whole factory. The PyroMiniBus is ideal for measuring the temperature of all painted metal surfaces.
Arrays of sensors fitted on a rig of infrared curing lamps ensure an even temperature profile along the part being cured. Surface coatings, paint and epoxy are ideal target materials, among many others.
Gas cylinder filling
Monitor temperatures to improve repeatability in the filled volume and improve filling efficiency. The temperature of every cylinder on a filling rig is easily monitored with no need to manually move contact probes.
Connect up to 6 PyroMiniBus sensors to each PM180.
Connect up to 247 PM180 sub-networks or individual PyroMiniBus sensors directly to another Modbus network via the PM180’s Modbus slave interface.
The PM180 is also compatible with PyroBus, PyroMini and FibreMini sensors.
The PMBHUB junction box is designed for use with PyroMiniBus sensors. It is also compatible with PyroMini and FibreMini sensors via a suitable cable.
Please note: The cable diameter on PyroBus sensors does not fit the PMBHUB cable glands, so PyroBus sensors should be connected to the PM180 by other means.
Wire colour codes for PyroMiniBus sensors