For specifications of the PM180 touch screen interface, see PM180
General Specifications
Temperature Range
-20°C to 1000°C
Interface
RS-485 Modbus RTU
Accuracy
±1% of reading or ±1ºC whichever is greater
Repeatability
± 0.5% of reading or ± 0.5°C whichever is greater
Response Time, t90
125 ms (90% response)
Supply Voltage
6 to 28 V DC
Baud Rate
9600 baud (other configurations available upon request)
Modbus Data Format
8 data bits, no parity, 1 stop bit (other configurations available upon request)
Configuration
Configuration Method
Via PM180 touch screen, or directly via RS-485 Modbus
Configurable Parameters
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 the PyroMiniBus detects only the wavelengths of infrared radiation that are not absorbed by the atmosphere.
Mechanical Specifications
Construction
Stainless Steel
Dimensions
18 mm diameter x 45 mm long (excluding cable gland)
Thread Mounting
M16 x 1 mm pitch
Cable Length
1m (longer lengths available to order)
Environmental Specifications
Ambient Temperature Range
PyroMiniBus sensor: 0°C to 120°C including cable
PMBHUB junction box: 0°C to 80°C
Relative Humidity
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 third-party hardware.
With two Modbus interfaces, the PM180 touch screen module 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:
Typical Applications
Power distribution
Monitor the temperature of busbar joints in switchgear cabinets. Hundreds or even thousands of points can be monitored on the same network using PyroMiniBus sensors.
Curing ovens
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.
Industrial bakery
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.
Automotive
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.
Condition monitoring
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.
Infrared curing
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.
PyroMiniBus sensors are compatible with third-party RS-485 Modbus Masters. The standard data format is 9600 baud, 8N1. Contact Calex for other requirements.
Calex also provides the 6-channel PM180 touch screen display/configuration module for up to 6 sensors.
Connect up to 247 PM180 sub-networks or individual PyroMiniBus sensors directly to another Modbus network via the PM180’s Modbus slave interface.
The PMBHUB junction box is designed for use with PyroMiniBus sensors. It is also compatible with PyroMini and FibreMini sensors via a suitable cable.
Electrical Installation
Wire colour codes for PyroMiniBus sensors
Data Sheet
3D CAD drawing - PyroMini Head (IGS)
