Relative hmidity, temperature, and barometric pressure probe, SDI-12 interface

The Evvos RHTP stands out as a robust and resilient, high-precision digital probe, proficient in measuring various environmental parameters. Thanks to its low power consumption, versatile electrical interface options, and wide power supply range, this probe seamlessly integrates with an array of battery-operated data loggers and industrial data acquisition systems. Crafted with a stainless-steel enclosure, weather-resistant electronic circuitry, and an optional durable cable, it ensures sustained performance, even when exposed to challenging outdoor and industrial environments. All primary parameters are directly sensed by physical sensors, while secondary parameters are derived from measurements acquired by the probe’s physical sensors.

• Environmental monitoring
• Weather forecasting solutions
• Industrial data acquisition
• Precision agriculture/farming
• Cold chain and HVAC applications

• Internet of Things (IoT)

• SDI-12 (v.1.4, user-selectable 3V/5V logic levels)
• Modbus/RS485

• NMEA 083 over RS422

• Weight: 0.151 kg
• Dimensions: 18 x 155 mm
• Cable: A 1.5 m. (5,9ft), 5-position (SDI-12) or 4-position (Modbus/RS-485, or NMEA-0183), PUR halogen-free, black-gray RAL 7021, free cable end, on socket straight or angled M-12, A-coded sensor cable. Custom cable length on request.

• Type: Socket straight M12
• Number of positions: 4
• Coding type: A 

Cable length: 1.5 m

• Cable weight: 30 kg/km
• UL AWM Style: 20549 / 10493 (80°C/300 V)
• Cable type: PUR halogen-free black [PUR]
• Conductor structure signal line: 42x 0.10 mm
• AWG signal line: 22
• Conductor cross section: 4x 0.34 mm² (Signal line)
• Wire diameter incl. insulation: 1.27 mm ±0.02 mm
• External cable diameter: 4.20 mm ±0.15 mm
• Outer sheath, material: PUR
• External sheath, color: black-gray RAL 7021
• Conductor material: Bare Cu litz wires
• Material wire insulation: PP
• Single wire, color: brown, white, blue, black
• Thickness, insulation: ≥ 0.21 mm
• Thickness, outer sheath: approx. 0.50 mm
• Overall twist: 4 wires, twisted
• Max. conductor resistance: ≤ 58 Ω/km
• Insulation resistance: ≥ 1 GΩ*km
• Nominal voltage, cable: ≤ 300 V
• Test voltage: ≥ 3000 V
• Minimum bending radius, fixed installation: 5 x D
• Minimum bending radius, flexible installation: 10 x D
• Smallest bending radius, fixed installation: 21 mm
• Smallest bending radius, movable installation: 42 mm
• Dynamic load capacity (bending): Max. bending cycles: 10000000, Bending radius: 10 x D, Traversing path: 10 m, Traversing rate: 3 m/s, Acceleration: 10 m/s²
• Halogen-free: in accordance with DIN VDE 0472 part 815, in accordance with DIN EN 50267-2-1
• Flame resistance: in accordance with UL 758/1581 FT2, DIN EN 60332-2-2 (20 s)
• Resistance to oil: in accordance with DIN EN 60811-2-1
• Other resistance: Highly resistant to acids, alkaline solutions and solvents, hydrolysis and microbe resistant, partly UV-resistant (in accordance with DIN EN ISO 4892-2-A), Low adhesion, abrasion-resistant
• Special properties: Flexible cable conduit capable, Silicone-free, Free of substances which would hinder coating with paint or varnish flexible
• Ambient temperature (operation): -40 °C ... 80 °C (cable, fixed installation), -25 °C ... 80 °C (Cable, flexible installation)