User's Manual

Technical Specification
80
Response time of analyzer: <15 secs to display 95% of final values (CO, CO
2
& HC)
Calculation of Lambda value according to Brettschneider (Source: Bosch Technische
Berichte, VOL. 6 (1979) No. 4, p177-186) – As listed in OIMLR99 specification.
Simplified Lambda calculation:
General Data
Real time clock
The handset has:
• Day and Date, time in hours, minutes and seconds with automatic leap year
compensation.
• Time is user adjustable.
Handset
• Bluetooth
®
Wireless Technology Comms
Range typically 10m (30 feet)
PC Interface
• USB 1.1 or 2.0
Lambda Calculation (by Brettschneider formula)
Lambda range 0.0 to 2.0
Resolution 0.01
[ ] Concentration in % vol (ppm vol for HC)
K1 Conversion factor for HC if expressed in ppm vol n-hexane (C
6
H
14
) equivalent.
It’s value in this formula is 6x10
-4
H
CV
Atomic ratio hydrogen to carbon (H
CV
= 1.7261)
O
CV
Atomic ratio oxygen to carbon (O
CV
= 0.0176)