| Gas
Ranges |
|
|
|
|
|
|
| Detection
Principle |
|
CO2
and CH4 by dual wavelength infra-red cell with reference
channel. O2, CO and H2S by internal electrochemical cells |
| Oxygen
cell lifetime |
|
approximately
3 years in air |
|
|
CH4 |
CO2 |
O2 |
CO |
H2S |
| Range |
|
0-70% to specification, 0-100% of reading |
0-40% to specification, 0-100% of reading |
0-25% |
0-500 ppm |
0-200 ppm |
| Typical Accuracy |
|
|
|
|
|
|
| 0-5% vol |
|
+0.5% |
+0.5% |
+1% |
- |
- |
| 5-15% vol |
|
+1% |
+1% |
+1% |
- |
- |
| 15%- FS |
|
+3% |
+3% |
+3% |
- |
- |
| 0-Full scale |
|
|
|
|
+10% |
+10% |
| Response Time, T90 |
|
<20 seconds |
<20 seconds |
<20 seconds |
<60 seconds |
<60 seconds |
| Power
Supply |
|
|
| Battery type |
|
Rechargeable NmH battery pack. Not user replaceable. LiMn battery for data retention |
| Battery life |
|
Typical use, 10 hours |
| Alternative power |
|
Can be powered externally for fixed in place applications. Call for futher information. |
| Battery
lifetime |
|
Up
to 1000 charge/discharge cycles |
| Facilities |
|
|
| Temperature measurement |
|
With optional probe, -10 deg C to +75 deg C |
| Temperature accuracy |
|
+
0.2 deg C
|
| Visual and audible alarm |
|
User selectable CO2, CH4 and O2 alarm levels via
DataField software |
| Communications |
|
RS232 |
| Relative pressure |
|
+ 250 mbar from calibration pressure |
| Pump |
|
|
| Typical
Flow |
|
300
cc/min |
| Flow
fail point |
|
50
cc/min approx. |
| Flow
with 200 mbar vacuum |
|
250
cc/min approx. |
| Vacuum
pull |
|
400
mbar approx. |
| Environmental
Conditions |
|
|
| operating
temperature range |
|
0
to 40 deg C |
| Physical |
|
|
| Weight |
|
2 kg |
| Size |
|
Length 630 mm, Width 190 mm, Depth 252 mm |
| Case
material |
|
anti static ABS |
| Display |
|
LCD, 40 x 16 characters, Fiber optic woven back light for low light conditions |
| Filters |
|
User replaceable integral fiber filter at inlet port and an external PTFE water trap filter |
|
|
|
