Pro N
2
Alarm nitrogen Analyzer
Nuvair
Page 18
www.nuvair.com
No display
Switched off
Bad connection
Low Battery
Switch on
Check display/ battery connection
Change the battery
Reading erratic
Pressure on sensor
Radio transmission
Sensor old or faulty
Condensation on sensor.
Check flow
Move unit away
Contact Nuvair
Dry in air
Display segments missing
Display faulty
Return to dealer
Reading drifts
Rapid temperature change
Stabilize temperature & recalibrate
9.0 Sensors
Sensor replacement for Pro N
2
Alarm.
Use part number: 9507M.
Analyzer Sensor Specifications
Flow Rate:
.5 -2 L/min
Resolution:
0.1% of volume
Linearity:
±1% over full scale
Sensor Type:
Electrochemical
Expected Sensor Life:
48 months
Range:
0-100% oxygen
Alarms:
User-adjustable minimum and maximum audible and visual
alarms
Response Time:
<15 sec. for 90% response; <25% for 97% response
Operating Temperature:
41° to 86°F (5° to 30°C)
Operating Humidity:
0 to 95% RH, non-condensing
Storage Temperature:
5° to 122° F (-15° to 50° C)
Power:
9 V battery, rechargeable lithium battery
or 10/230 V wall plug-in
Output Signal:
11+- 3 milliVolt @ dry ambient air 74
°
F (23
°
c)
Drift:
< 1% volume N
2
/ month @ air
Pressure:
750 to 1250 hPa
Linearity Error:
= 2% @ 100% N
2
applied for 5 min.
Zero Offset Voltage:
= 200 uV in 100% N
2
, applied for 5 min.
Influence of Humidity:
-0.03% rel. N
2
reading /%RH
Humidity:
up to 100% RH
Temperature Compensation:
NTC
Interferences:
according to DIN EN 12598 and ISO 7767
Material in contact media:
PA, PPS, PTFE, stainless steel
In the interest of product improvement these design specifications may change without notice.
Note: All specifications are at ambient / sea level, 77
°
F / 25
°
C
10.0 Troubleshooting
