As one of the most widely used gas detection techniques, the Photoionization Detector (PID), is commonly applied in both portable and fixed instruments for detection of a wide variety of organic compounds and some inorganic gases in ambient air.
MOCON’s next generation PID sensor family - the ev-NXT - provides a step change in the performance of PID sensors. The eV-NXT line of sensors has a patented design that removes the variability from PID sensors. In the past all PID sensors had significant variability in gain from sensor to sensor as lamps and detectors did not achieve consistent performance. The eV-NXT removes that variability and provides consistent gain and environmental response sensor to sensor. This improves accuracy and makes the sensor the easiest to integrate in OEM designs.
The piD-TECH
® eV-NXT
® comes in five ranges depending upon application requirements.
- piD-Tech eV-NXT -10.6 eV Green 0-10,000 ppm
- piD-Tech eV-NXT -10.6 eV Purple 0-2,000 ppm
- piD-Tech eV-NXT -10.6 eV Red 0-200 ppm
- piD-Tech eV-NXT -10.6 eV Yellow 0-20 ppm
- piD-Tech eV-NXT -10.6 eV Blue 0-4 ppm
Our dedicated sensor engineers will assist you in integrating our intrinsically safe photoionization sensor into your products, reducing the time and cost associated with product development.
The new eV-NXT has the following
Features
- The piD-TECH family of PID sensors are the most widely used PID sensors in the industry.
- Enhanced sensor-to-sensor repeatability for better accuracy
- Lamp not lit fault detection.
- Intrinsically safe: UL, CAN/CSA, ATEX, IECEx certified
- Long lamp life: Typically 10,000 hours
- Internal input voltage regulation for greater signal stability
- Internal filtration for protection from particulates and humidity
- Easily cleaned and field serviced
Benefits
- Plug-and-play operation
- Consistent performance over a wide temperature and humidity range
- Low power draw for extended battery life
- Low PPB minimum detection range
- Exceptional baseline stability for environmental air quality applications.
The eV-NXT sensor is the most accurate and easiest to integrate PID sensor on the market. These sensors are ideal for the demanding applications including the environmental air quality, process and industrial safety.
Sensor Ranges
|
10.6 eV Lamp
|
Green
|
Purple
|
Red
|
Yellow
|
Blue
|
|
Part Number
|
045-110
|
045-111
|
045-112
|
045-113
|
045-114
|
|
Range
|
10,000 ppm
|
2,000 ppm
|
200 ppm
|
20 ppm
|
4 ppm
|
|
Detection Limit
|
500 ppb
|
100 ppb
|
10 ppb
|
1 ppb
|
0.5 ppb
|
|
T90 Response
|
< 3.5 sec
|
< 3.5 sec
|
< 3.5 sec
|
< 6.5 sec
|
< 6.5 sec
|
|
Typical Sensitivity*
|
0.6 mV/ppm
|
2.4 mv/ppm
|
12.0 mV/ppm |
118 mV/ppm |
545 mV/ppm |
*With Isobutylene
Operating Specifications
|
piD-TECH® eV-NXT® Photoionization Sensors
|
Units
|
|
Temperature Range
|
'-20*C to 60*C intrinisically safe (-40C to 65C operating temperature)
|
|
Relative Humidity Range
|
0 to 99% non-condensing
|
|
Humidity Baseline Sensitivity
|
Near zero to 95% RH
|
|
Temperature Dependence
|
Follows ideal gas law
|
|
Fault Detection
|
Continuous monitoring of lamp intensity for lamp not lit fault detection.
|
Electrical Characteristics
|
piD-TECH® eV-NXT® Photoionization Sensors
|
Units
|
|
Supply Voltage
|
3.2 to 5.5 VDC
|
|
Current
|
Typical 28 mA
|
|
Operating Power
|
22 mW
|
|
Output Signal
|
0.04 V to 2.85 V
|
Physical Characteristics
|
piD-TECH® eV-NXT® Photoionization Sensors
|
Units
|
|
Weight
|
<12 grams
|
|
Dimensions
|
20.0 mm Dia. x 16.5 mm H (pins 4.83 mm H)
|
|
Serviceable Parts
|
Lamp, detector cell, cap/filter
|
|
Lamp Life
|
10,000 hours
|
|
Onboard Filters
|
Prevents sensor contamination from liquids and particles
|
|
Warranty Period
|
2 years, not including consumables
|
Certifications & Approvals
|
piD-TECH® eV-NXT® Photoionization Sensors
|
Units
|
|
USA
|
UL 913, 8th Edition. Intrinsically Safe Apparatus and Associated Apparatus for use in Class I, II, and III, Division 1, Hazardous (Classified) Locations
|
|
Europe
|
ATEX directives: EN 60079-0:2018, EN 60079-11:2012; II 1 G Ex ia IIC Ga, -20 oC - 60 oC ATEX certificates: UL 23 ATEX 2970U Rev. 0; C E 0539
|
|
Other
|
IECEx Standards: 60079-0 Ed. 7; 60079- 11 Ed. 6; IECEx UL 23.0018U Issue 0; CAN/CSA C22.2 No.157-92
|
|
Patents
|
Pending
|
|
Spare Part Number
|
Description
|
|
046-062
|
Cap with integral filter
|
|
046-042
|
eV-NXT Detector Ionization Cell Assembly
|
|
043-257
|
piD-TECH® 10.6eV Lamp Assembly
|
|
044-657
|
piD-TECH® 10.6eV Lamp Assembly individually packaged
|
|
046-271
|
piD-TECH® eV-NXT Maintenance Kit
-2 ea Polishing Disc
-1 ea Cap with integral filter
-1 ea Padded Swab
|
Environmental Monitoring
- Indoor/Outdoor Air Quality Monitoring
- Fugitive Emission Monitoring
- Fenceline Monitoring
- AMC in Cleanrooms
Toxic Gas Monitoring
- Portable and Fixed Gas Detection
- Confined Space Monitors
- Leak Detection
- Safety & Compliance Monitoring