General Tools and Instruments WBGT8778 - Manual (Page 9)

8
RS232 INTERFACE
The meter can do PC link for
data analysis
on-line
logging and via RS232
interface and software.
The protocol is as follows.
B.Format
(Transmitting ASCII code by every
second while meter is on.)
Wxxx.xC(F):Txxx.xC(F):Txxx.xC(F)
:Hxx.x%LRCCRLF
Note: The 1st value is WBGT, the 2nd is
TA, the 3rd is TG, and the 4th is RH.
A.9600 bps, 8 data bits, no parity.
SPECIFICATION
8758 8778
Black ball size 40(D)x35(H)mm 75(D)x75(H)mm
Air Temp. range 0~50℃ (32~122℉)
Air Temp. accuracy ±0.6℃
Globe Temp. range 0~80℃ (32~176℉)
Indoor
±2℃ (15~40℃)
±2.5℃ (Others)
±1℃ (15~40℃)
±1.5℃ (Others)
Globe
Temp.
accuracy Outdoor
±3℃ (15~40℃)
±3.5℃ (Others)
±1.5℃ (15~40℃)
±2℃ (Others)
WBGT Temp. range 0~50℃ (32~122℉)
WBGT Formula
Indoor/Outdoor and no sun:
WBGT=0.7WB + 0.3TG
Outdoor and full sun:
WBGT=0.7WB + 0.2TG + 0.1TA
RH range 0~100%
RH accuracy
±3% (10~90%RH)
±5% (other range)
Resolution 0.1℃/℉, 0.1%RH
Response time 15 seconds typical
Operating condition 0~50℃, 0~95% RH
Storage condition -20~65℃, 0~95% RH
Meter size
40(H)x48.7(W)x254(L)mm – 8758
75(H)x75(W)x278.2(L)mm – 8778
Battery life
(without beep)
1000 hours (Alkaline)
250 hours (General purpose)