Servomex 2500 Quick Start Manual
2500 Series - Configuration and Operation 02500/003E/0
25
Go via MENU/SETUP/UTILITY/UTILITY 2 to Z&S TOL - Press ENTER
At display screen
Operation
ZERO TOLERANCE
10.0 % FSD
Select required value using cursor keys, then press ‘ENTER’
SPAN TOLERANCE
10.0 % FSD
Select required value using cursor keys, then press ‘ENTER’
4.3 Manual calibration and checking
• Calibration
Manual CALIBRATION of Zero and Span is conducted by entering the MAN function.
Individual Calibration Samples for each component must be manually introduced into
the 2500's sample cell, either using manually-switched valves or the built-in solenoid
valve driver relays. The following example assumes a Z CAL (zero) followed by an S
CAL (span).
Go via MENU/CALIBRATE to MANUAL CAL - Press ENTER
At display screen
Operation
SELECT COMPONENT
CO
2
vpm
↑
(if more than 1 component)
Select required measurement, then press ‘ENTER’
Z CAL
/S CAL
HISTORY/CHK Z&S
Select ‘Z CAL’, then press ‘ENTER’
ZERO TARGET
CO
2
= 00.0 vpm
Set to the required zero gas concentration, then press ‘ENTER’
TC 0.0 CC 2.1
vpm
ACCEPT? Y/N
TC is the target concentration
CC is the current concentration
Introduce low cal gas
, when CC has stabilised it may be accepted or
rejected
Z CAL
/S CAL
HISTORY/CHK Z&S
Select ‘S CAL’, then press ‘ENTER’
SPAN TARGET
CO
2
= 0100.0 vpm
Set to the required span gas concentration, then press ‘ENTER’
TC 100.0 CC 96.2
vpm
ACCEPT? Y/N
TC is the target concentration
CC is the current concentration
Introduce high cal gas
, when CC has stabilised it may be accepted or
rejected
NOTE
For best accuracy, the Zero Calibration Sample concentration should be as close to true zero
% fsd as possible, and the Span Calibration Sample should be as close to 100% fsd as
possible.
Summary of Contents for 02500003E
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