Thermal Environment Meter PCE-WB 20SD

Reference: PCE-WB 20SD

Condition: New product

Overview

The PCE-WB 20SD is a data-logging thermal environment meter that calculates the WBGT index (indoor & outdoor) and measures black globe temperature, relative humidity, air temperature, dew point and wet-bulb temperature.

It supports automatic (1–3600 s) or manual logging, an audible alarm and a backlit LCD. Readings are saved to an SD card (1…16 GB) for easy spreadsheet analysis.

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Key benefits

Safety & compliance guided by WBGT for work-rest cycles.
Reliable records with integrated data logger and SD memory.
All-in-one metrics: WBGT, TG, TA, WB, RH and dew point.
Field-ready: large display, alarm, AA batteries.

Typical applications

Occupational Health & Safety (industry, construction).
Outdoor sports and events.
Training and public safety.
Logistics, agriculture and other outdoor work.

Technical specifications

Parameter	Value
Units & measurands
Measured units	WBGT, TG (black globe), TA (air), WB (wet bulb), Relative humidity, Dew point
WBGT
Range (indoor)	0 … +59 °C
Range (outdoor)	0 … +56 °C
Accuracy (indoor)	±1 °C (+15 … +59 °C); ±1.5 °C (elsewhere)
Accuracy (outdoor)	±1.5 °C (+15 … +56 °C); ±2 °C (elsewhere)
Air temperature (TA)
Range	0 … +50 °C
Resolution	0.1 °C
Accuracy	±0.8 °C
Black globe temperature (TG)
Range	0 … +80 °C
Resolution	0.1 °C
Accuracy	±0.6 °C
Relative humidity
Range	5 … 95 % RH
Resolution	0.1 % RH
Accuracy	>70 % RH: ±(3 % of reading + 1 % RH); <70 % RH: ±3 % RH
Dew point
Range	−25.3 … +48.9 °C
Resolution	0.1 °C
Wet-bulb temperature
Range	−21.6 … +50 °C
Resolution	0.1 °C
WBGT calculation
Indoor / shaded outdoor	WBGT = (0.7 × WB) + (0.3 × TG)
Outdoor in sun	WBGT = (0.7 × WB) + (0.2 × TG) + (0.1 × TA)
Logging & interface
Logging interval	Automatic: 1 … 3600 s \| Manual: per key press
Memory	SD card 1 … 16 GB
Interface	RS-232 / USB
Display & operating conditions
Display	Backlit LCD (52 × 38 mm)
Operating temperature	0 … +50 °C
Ambient humidity	< 85 % RH
Power & consumption
Power supply	6 × 1.5 V AA batteries or 9 V adaptor
Current draw	14 mA (normal) \| 37 mA (logging, backlight off)
Size & weight
Instrument dimensions	177 × 68 × 445 mm
Globe diameter	Ø 75 mm
Weight	489 g
Scope of delivery
Included	PCE-WB 20SD meter, card reader, user manual, SD card, carrying case