GTA black globe temperature sensor
- Manufacturer: Nesa
- Category: Meteorology – Climatology, SENSORS, Temperature sensors, Temperature - Humidity
The NESA GTA is a black globe temperature sensor (globothermometer) with a 1/3 DIN (100 Ω @ 0 °C) 4-wire Pt100 platinum element in a matte black painted copper sphere (approx. 150 mm), in accordance with WMO Annex.8.
It measures in the typical range of -40 ÷ +60 °C with a resolution of 0.01 °C, accuracy DIN 43760 1/3 DIN (±0.1 °C @ 0 °C) and a response time of less than 10 s, directly delivering the resistive variation of the 4-wire Pt100 element in the GTA-N version.
Key points
- Platinum resistance thermometer Pt100 1/3 DIN (100 Ω @ 0 °C) according to DIN 43760 (±0.1 °C @ 0 °C)
- Matte black painted copper sphere (approx. 150 mm) with stainless steel screws
- Resolution of 0.01 °C and response time of less than 10 s
- 4-wire Pt100 natural output (reference GTA-N)
- Compliance with WMO Annex 8 standard
Technical Frequently Asked Questions
What output signal does the GTA black globe sensor deliver?
It is supplied in GTA-N version with 4-wire natural Pt100 output (wire 1 yellow for Pin 1 Pt100; wire 2 white for Pin 2 Pt100; wire 3 green for Pin 3 Pt100; wire 4 gray and orange for Pin 4 Pt100).
How do I order the GTA black globe temperature sensor?
The order code combines the model (GTA), the output (N = Pt100 natural), and the sensor-datalogger cable (05 = CS05, 10 = CS10, xx* = CSxx, length in meters to be specified in the order). The model reference is GTA-N.
In what temperature range does the GTA sensor operate?
Its typical measuring range is -40 ÷ +60 °C and it supports operating conditions of -50 ÷ +80 °C, with a weight of 400 g.
Properties
| Feature | Specification |
|---|---|
| Measurement and sensitive element | |
| Measured magnitude | Heat-induced temperature on a black body |
| Typical measurement range | -40 to +60 °C |
| Transducer type | Platinum resistance thermometer Pt100 1/3 DIN (100 Ω @ 0 °C) |
| Precision | DIN 43760 1/3 DIN (±0.1°C @ 0°C) |
| Resolution | 0.01 °C |
| Response time | < 10 s |
| Regulatory compliance | WMO Annex 8; CE |
| Output signals and connections | |
| Output signal (N version) | Natural Pt100 4-wire (GTA-N) |
| With MCS module (optional) | 0÷2Vdc (A), 4÷20mA (B) or RS485 / Modbus (C) |
| Thread allocation | 1 (Yellow): Pin 1 Pt100 · 2 (White): Pin 2 Pt100 · 3 (Green): Pin 3 Pt100 · 4 (Gray and Orange): Pin 4 Pt100 |
| Power supply, environment, and mechanical data | |
| Feeding | 10÷30Vdc |
| Typical consumption | < 0.01 W |
| Electrical protections | Against polarity reversal and transients |
| Operating conditions | -50 to +80 °C |
| Construction material | Matte black painted copper, stainless steel screws |
| Globe dimensions | approx. 150 mm |
| Weight | 400 g |
| Reference | Configuration |
|---|---|
| GTA-NGTAN | Model: GTA · Sensitive element: Pt100 1/3 DIN (100 Ω @ 0 °C) in matte black copper sphere · Output signal: Natural Pt100 4-wire, with 2m cable calibration report |
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