Environmental Monitoring Equipment & Supplies • Sales, Rental & Service by Enviro-Equipment — Charlotte, North Carolina USA

RAE Systems MultiRAE Plus 4-Gas/PID Rental
  • Measures 0-2000 ppm VOCs; 0-100% LEL; 0-500 ppm CO; 0-100 ppm H2S; 0-30% O2
  • Datalogging capability (80 hours, 5 channels at one minute intervals)
  • Built-in sampling pump - 250 cc/min
  • Rechargeable Li-ion battery ~14 hour runtime typical

The RAE Systems MultiRAE Plus 4 gas detector with PID provides total protection in toxic environments. The meters default setup measures carbon monoxide (CO), hydrogen sulfide (H2S), LEL (lower explosive limit), oxygen (O2), and volatile organic compounds (VOCs). Most confined space monitors provide less than total protection because they miss many toxic vapors and gases. LEL sensors measure explosivity, not toxicity. Many VOCs are potentially toxic at levels that are well below the sensitivity of the LEL sensor found in most multi-gas monitors. By the time that LEL sensors even respond to gasoline vapors the air is already toxic!

The MultiRAE Plus PID accurately measures low levels of VOCs ensuring worker safety. The PID measures VOC levels from 0 – 2000 ppm. Alarms can also be set for Short Term Exposure Levels (STEL), Time Weighted Average (TWA), Peaks and Minimums. The MultiRAE displays the exact airborne VOC levels so that you do not have to guess when to put on respiratory protection. With the MultiRAE you work safer, more efficiently and more comfortably because you can go longer without respiratory protection with complete confidence you are working in clean air. The MultiRAE Plus 4 gas with PID rental comes pre-calibrated by our environmental specialists, including a calibration record.

Items Included:
  • MultiRAE Plus 4-Gas with PID Meter.
  • Sensors: carbon monoxide, hydrogen sulfide, combustible gas (LEL), oxygen, photoionization detector (PID)
  • Battery Charger
  • USB Data Cable
  • ProRAE Suite Software
  • Sample Wand with Tubing
  • 6" Flex Probe
  • Instruction Manual
  • Calibration Record
  • Charcoal Zero Adapter
  • Spare Moisture Filter
  • Carrying Case

Gas Monitor






Combustible Gas

0-100% LEL

1% LEL

Carbon Monoxide

0-500 ppm

1 ppm

Hydrogen Sulfide

0-100 ppm

1 ppm


0-200 ppm
200-2000 ppm

0.1 ppm
1 ppm


4.65"L x 3.0"W x 1.9"H (11.8 x 7.6 x 4.8 cm)


16 oz.with battery (454g)

Direct Readout

  • Oxygen as percentage by volume
  • Combustible gas as percentage of lower explosive level (LEL)
  • Carbon Monoxide, Hydrogen Sulfide and VOCs as parts per million (ppm)
  • High and low values for all gases
  • STEL and TWA values of toxic gases and VOCs
  • Battery and shut down voltage
  • Date, time, elapsed time, temperature


Lithium-ion battery pack with internal smart charging, 120V AC/DC wall adapter

Operating Hours

14 hours continuous with Li-ion (typical), unit will run and charge simultaneously


2 line, 16 digit LCD with LED backlighting automatically in dim light or alarm condition


-4° to 113 °F (-20 to 45°C)


0% to 95% relative humidity (non-condensing)


90 dB buzzer and flashing red LED to indicate exceeded preset limits:

  • High: 3 beeps and flashes per second
  • Low: 2 beeps and flashes per second
  • High and low values for all gases
  • STEL and TWA: 1 beep and flash per second
  • Additional diagnostic alarms and display messages for low battery and pump stall


Highly resistant to EMI/RFI. Compliant with EMC Directive 89/336/EEC

IP Rating

IP-55: protected against dust, protected against low pressure jets of water from all directions

Data Logging

80 hours, 5 channels at one minute intervals download to PC with serial number of unit, user ID, site number, and calibration date


Zero & Span Calibration (programmable)

Sampling Pump

250 cc/min

Low Flow Alarm

Auto shut-off pump at low flow condition

Hazardous Area Approval

  • US and Canada: UL, cUL, Classified as Approval Intrinsically Safe for use in Class I, Division I Groups A, B, C, D, T3C
  • Europe: ATEX II 2G EEx ia d IIC T3 & T4


Durable yellow boot with belt clip and wrist strap; Shoulder strap; optional tripod/wall mounting bracket

RAE Systems MultiRAE Plus Manual2.69 MB