Beijing Zetron Technology Co., Ltd CN

Zetron NEO Photo-Ionization Detector

Zetron NEO Photo-Ionization Detector


The NEO is one of the most advanced handheld VOC (Volatile Organic Compound) monitors available for ppb (parts per billion) detection. The NEO offers several models from the most sensitive 1 ppb to a high range up to 15,000 ppm for different applications and a benzene-specific version (NEO BENZ). A novel design of Photo-ionization Detector (PID) and Ultraviolet (UV) lamp reduces interferences due to humidity. Options include real-time data monitoring with a built-in wireless modem using mPower Suite application software.


Size 9.06 x 3.15 x 2.36 in (230 x 80 x 60 mm)
Weight 24.69 oz (700 g)
Sensor Photo-ionization sensor with standard 10.6 eV lamp (9.8 eV lamp in MP186 NEO BENZ)
Response Time t90
  • 3 seconds for VOCs
  • 45 seconds with Benzene filtering tubes
Accuracy ±3% (at calibration point)
Battery / Run Time Rechargeable Lithium-Ion battery with 24 hours typical operation
Keypad 4 operation keys
Sampling pump Built-in pump @ 450 cc/min, settable to low flow of 250 cc/min
Sample from up to 150 ft (45 m) horizontally or vertically
Display 128 x 128 graphical LCD, 1.77 x 1.73 in (45 x 44 mm), with LED backlight for enhanced display readability
Direct Readout Real-time reading of gas concentration (ppb, ppm, mg/m3, μg/m3)
PID measurement gas and correction factor, lamp on/off, Man-Down alarm on/ off, battery status, pump status, datalogging on/off, wireless on/off, temperature and time
Alarm Audible (90 dB @ 30 cm), visual (flashing bright red LEDs), and on-screen indication of alarm conditions plus wireless remote alarm notification
High, Low, STEL, TWA alarms
Over range alarm, battery low alarm
Man-Down alarm with pre-alarm and real-time remote wireless notification
EMI/RFI Highly resistant to EMI/RFI
Compliant with EMC Directive 89/336/EEC
IP Rating P-66/67
Datalogging Standard 12 months at one-minute intervals
Storage interval: 1 to 3,600 seconds (adjustable)
Calibration Two/three-point calibration
Charging and Communication Charging, data download, instrument setup and firmware upgrades on PC or laptop via Micro USB
Wireless data and alarm status transmission via built-in RF modem
Wireless Range 1,000 ft (300 m) typical
Correction Factors Integrated Correction Factor list of more than 700 compounds
Safety Certifications UL/cUL: Class I, Div 1, Group A, B, C, D
T4, -20°C ≤ Tamb ≤ +50°C (pending)
Temperature -4° to 113°F (-20°C to 50°C)
Humidity 0% to 95% relative humidity (non-condensing)
Attachments Durable rubber boot, color coded for different models; Tube holder for MP186 NEO BENZ
Warranty 2-year warranty including 10.6eV lamp and sensor; 1-year on 9.8eV lamp

Model Numbers VOC Range (ppm) Resolution (ppb)
MP181 (NEO PPM) 5000 10
MP182 (NEO EXT) 15000 10
MP184 (NEO PPB) 15000 1
MP185 (NEO SEMI) (w/o MicroUSB) 15000 1
(w/9.8 eV Lamp & Tube Holder)
200 Benzene or Butadiene 50
10,000 VOC 5


1.Industrial Hygiene

2.Oil & Gas

3.Benzene-Specific Measurements

4.Environmental Testing

5.Fire & Hazmat

6.Paints, Adhesives & Printing



9.Heat Transfer Fluids

10.Industrial Solvents


12.Pulp Mills

13.Indoor Air Quality (IAQ)


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