Eastern Energy 7752, Operation Manual

Page: 12 / 15

11
PC CONNECTION
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 (
ASCII)
Model 7752/77532
Cxxxxppm:Txxx.xC(F) LRC CRLF
Description: $CO
2
:Air LRC CRLF
Model 7755/77535
Cxxxxppm:Txxx.xC(F):Hxx.x%:
dxxx.xC(F):wxxx.xC(F) LRC CRLF
Description: $CO :Air:RH:DP:WBT LRC
2
CRLF
A. 9600 bps, 8 data bits, no parity.
SPECIFICATION
7752 77532 7755 77535 Mod el
Me asuring range
CO
2
0
~
99 99 pp m 0
~
99 99 pp m 0
~
99 99 pp m 0
~
99 99 pp m
(20 01
~
99 99
ou t of sca le)
(20 01
~
99 99
ou t of sca le)
(50 01
~
99 99
ou t of sca le)
(50 01
~
99 99
ou t of sca le)
Temp . -10 ~6 0°C( 14 ~1 40°F)
Hu mi dity
0. 1%~ 99 .9%R H NA
De w point NA -20 .0~ 59 .9
°
C
Wet bu lb
NA -5. 0~ 59 .9
°
C
Re sol ut ion
1p pm, 0. 1°C/°F 1p pm, 0. 1°C/°F, 0. 1%R H
Ac curacy
CO
2
±
50 pp m
±
5%
±
50 pp m
±
5%
±
30 pp m
±
5%
±
30 pp m
±
5%
(0~ 20 00 pp m) (0~ 20 00 pp m) (0~ 50 00 pp m) (0~ 50 00 pp m)
Temp .
±0. 6°C / ±0. 9°F
Hu mi dity
NA
±3%RH (at 25 ° C, 10 ~9 0%RH );
±5 %RH (a t 25 °C, ot he rs)
War m- up time 30 sec on ds
Re sponse time
CO
2
Tair
<3 0 se con ds (90 % st ep cha ng e)
<2 mi ns (90 % st ep cha ng e)
RH
NA
<1 0 mi ns
(90 % st ep ch an ge )
Re lay
NO
LCD size 26 *44 mm, H* W
Ope rat ing
co nd ition
0~ 50°C, 0~ 95 % RH (a voi d co nd en sat ion )
St or ag e
co nd ition
-20 ~5 0°C, 0~ 95 % RH (a voi d co nd en sat ion )
Po we r sup pl y
AA *4 pc s
Ba tter y life
>2 4 hou rs (A lkal ine ba tter y)
Met er si ze
20 5* 70 *56 mm, L* W* H
Weight
20 0g
St an da rd
pa ck ag e
Met er, manu al , AA bat ter ies , ha rd ca rry ca se