User manual

Model: EC-GOLD
ECGOLDUM17.DOC Rev: 1.7
- 13 -
4.0 CALIBRATION
4.1 CALIBRATION NOTES
If the EC-Gold configuration is known i.e. what the calibration gas concentration value has been
set for, and the calibration type (Single, or Dual Point) then the entire calibration procedure can be
completed without removing the front cover.
THE CALIBRATION PUSHBUTTON MAY BE ACCESSED WITHOUT REMOVING THE FRONT
COVER BY USING A FINE TOOL SUCH AS A SCREWDRIVER THROUGH AN OPENING LOCATED
FACING DOWN, LEFT OF CENTER.
The EC-Gold may be calibrated using either a Single Point or Dual Point calibration procedure.
A full Dual Point calibration is always performed at the factory and involves zeroing the sensor in clean
air, then calibrating at a preset gas concentration. The Single Point calibration is typically used in the
field since it is more convenient. Also, it does not require clean air as one of the calibration points, since
clean air cannot be guaranteed in all installations. A Single Point calibration assumes the unit has
already been zeroed. This is always true for new units from the factory.
Figure 3.1
4.2 SINGLE POINT CALIBRATION
The EC-Gold must be configured for Single Point calibration, and the calibration gas
concentration value must be known. If either setting is in doubt, then see section 3 to set
these values.
1. Determine what Calibration gas concentration the EC-Gold is expecting. This value is
listed on the packing slip and may be recorded in the back of the user manual in the
CONTROLLER SETTINGS sheet for future reference. This value can be changed at
CAL GAS CANISTER
EC-GOLD
CALIBRATION
Flowrate regulator
preset for 0.5Lpm
CAL.DSF
Flow ON/OFF
knob
6 feet of 5/16" O.D. x 3/16" I.D.
flexible, clear tubing.
Male, Quick Disconnect
tube inserted into EC-
Gold Calibration Port.
EC-Gold
Calibration
Port