| Measurement |
| Sensing technique: |
Platinum Resistance Temperature
Detectors, 100 Ω elements to EN 60751
Class A using 4-wire cable up to 30 m |
| Ta, Dry Bulb (Air): |
Measuring Range: 10 - 60oC
Accuracy: ±0.5oC |
| Tg, Globe: |
Measuring Range: 20 - 120oC
Accuracy 20 - 50oC: ±0.5oC
Accuracy 50 - 120oC: ±1.0oC |
| Tnw, Natural Wet: |
Measuring Range: 5 - 40oC
Accuracy: ±0.5oC |
| Relative Humidity: |
Less than ±5% from 35 - 100% RH |
| Resolution: |
0.1o for temperature,
0.1% for RH. |
| For inside/outside measurements with no solar load: |
Use WBGTin = 0.7Tnw + 0.3Ta. |
| For outside measurements with solar load: |
Use WBGTout = 0.7Tnw + 0.2Tg + 0.1Ta. |
| Power Supply |
| Instrument Consumption: |
Approx. 30 mA. |
| Battery: |
4 x AA / MN1500 cells Alkaline or
rechargeable Nickel Cadmium |
| Typical operating time: |
Alkaline Batteries (2700 mAh), >85 hours,
Rechargeable NiCd cells (950 mAh),
>30 hours |
| Battery Charging: |
Internal NiCd fast charger circuitry.
Charge termination based on Negative
delta V detection with additional time-out
protection.
The charger must be disabled for dry cell
operation. |
| Charge Rate: |
Fast charge rate 450 mA,
Standby charge rate 55 mA approx. |
| Power adapter: |
Universal with input voltage range
100 - 240 V AC, 47 - 63 Hz.
Output 12 V DC at 0.8 A.
Supplied with connectors for UK, USA
and European mains outlet sockets. The
instrument may be powered continuously
from the external power adapter. |
