Teledyne 2240 – Portable Handheld Hydrogen Leak Detector, 3rd generation (updated 1/31/11) - Manual (Page 21)

Handheld Hydrogen Leak Detector Model 2240
Teledyne Analytical Instruments Page 21 of 30
5.9 Zero Sensor
The Zero Sensor menu is used to invoke the Zero
Operation as described in Section 4.7.
5.10 Verify
The Verify menu shows the date of the last field verify and
allows the user to invoke the Verify function in Section 7.