Spectrex SafEye Xenon 700S, User Manual, Page: 58 / 80

Zero Calibration
58 SafEye
TM
Xenon 700S Gas Detector User Guide
6.5.1 Signal Values Limitation
Table 20 describes the maintenance data channels limitation values.
Table 20: Maintenance Channels Limited Values
Channel
Installation Distance
Maintenance Min Med Max
Reference 1V Gain1 1V Gain2 1V
Gain3 The minimum signal
allowed is 2.5V at Gain 4
Signal 1 1V Gain1 1V Gain2 1V
Gain3 The minimum signal
allowed is 2.5V at Gain 4
Signal 2 1V Gain1 1V Gain2 1V
Gain3 The minimum signal
allowed is 2.5V at Gain 4
Ratio 1 0.6–2 0.6–2 0.6–2 0.5–3
Ratio 2 0.6–2 0.6–2 0.6–2 0.5–3
NQRat 1 0.95–1.05 Must be 0.95–1.05
NQRat 2 0.95–1.05 Must be 0.95–1.05
LEL 0 LEL x m 0 LEL x m
Temp. Up to 25° C beyond room temp. Up to 25° C beyond
room temp.
Voltage 32VDC > V > 17VDC 32VDC > V > 17VDC
Ref/Noise More than 80 More than 30
Sig 1/Noise More than 80 More than 30
Sig 2/Noise More than 80 More than 30
Note : The installation information refers to the installation distance.
 Min : The minimum distance as defined for that model
 Med : Half of the maximum distance as defined for that model
 Max : The maximum distance as defined for that model
Zero Calibration 6.6
Zero calibration must be performed after:
 Installation
 Realignment
 Window cleaning
 Any change in detector or source position
Precise alignment must be performed prior to the zero calibration procedure.
Perform zero calibration in good weather conditions, with insignificant gas
concentrations in the surrounding environment, or indoors.