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Fours gas detector Biosystems MultiPro By Sperian – Honeywell



Biosystems MultiPro can option for detect 2~4 gases below:

  • LEL / O2
  • LEL / O2 / CO
  • LEL / O2 / H2S
  • LEL / O2 / Duo-Tox (CO/H2S)

Simultaneously monitors up to four confined space gases in real-time.

MultiPro Features & Benefits

  • One button operation and calibration
  • Compact and rugged design
  • Black box recorder with over 40 hours of storage

Quick Specs

  • Material” Polycarbonate with tough rubber overmold
  • Available sensors: O2, LEL, CO, H2S, DuoToc (CO/H2S)
  • Computer interface: Wireless via PC IrDA port

MultiPro Overview

The MultiPro multi-gas detector monitors up to four confined space gases simultaneously, in real-time. It offers one button operation and calibration, an easy-to-read LCD display, audible and visual alarms and event logger. The rugged, compact, economical MultiPro comes with an optional sample draw pump. As part of the IQ Management System, the automated IQ Express™ docking station saves on calibration gas costs, automates your record keeping, and ensures your instrument is working to specifications.

Features & Benefits:


  • Compact and rugged
  • One button operation
  • Easy-to-read front mounted backlit display
  • Over-molded boot


  • Automatic event logger (20 events, including sensor type, max, average, time and duration)
  • Black-Box recorder with over 40 hours of storage
  • Available with optional datalogging for convenient and easy downloading to a computer

Sensors and Calibration

  • Three sensors: O2, LEL and Biosystems’ Duo-Tox two channel CO/H2S sensor
  • Field replaceable sensors
  • One button auto calibration
  • Calibration due reminder
  • Sensor span reserve indicators during calibration for predictive maintenance


  • Alkaline or rechargeable (Li-Ion) versions
  • Up to 22 hours of run time
  • Drop-in fast charger
  • Recharges in less than 5 hours


MultiPro Specification

Size 4.5″ x 2.7″ x 1.7″ (11.4 x 6.8 x 4.3 cm) Without Pump
6.8 ” x 2.7″ x 1.7″ (1 x 7.16.8 x 4.3 cm) With Pump
Weight Alkaline:  9.9 oz. (280g)  Li-Ion:  7.8 oz. (220g)
Durability Meets IP65 water standard
Display Front-mounted LCD simultaneously displays readings for up to 4 sensor channels
Audible Alarm Loud warbling, two-tone alarm rated at 92 dBA at one foot
Visual Alarm Bright red LED alarm visible from front and sides
Display Backlight Activates with MODE button
Controls True one-button operation including automatic calibration
Housing Polycarbonate case with over molded rubber boot
Battery Options Alkaline or rechargeable Li-Ion (Lithium Ion) battery packs
Battery Life (diffusion) 22 hours with either battery pack (@ 70ºF/22ºC)
Battery Life with Pump 14-16 hours with either battery pack or the #54-49-102 Motorized Pump – Optional
Warranty Two years including battery, pump and sensors

MultiPro Configurations

MultiPro Meter with
Sensors Installed
Battery Configuration
Alkaline Li-Ion
LEL / O2 54-48-300ADY 54-48-300NDY
LEL / O2 / CO 54-48-301ADY 54-48-301NDY
LEL / O2 / H2S 54-48-302ADY 54-48-302NDY
LEL / O2 / Duo-Tox (CO/H2S) 54-48-314ADY 54-48-314NYD

MultiPro Options

Standard Features Code Comments
Alkaline A MultiPro Alkaline & Li-Ion batteries are interchangeable.
Li-Ion version includes charger.
Rechargeable N
Datalogging D Enables the MultiPro to download recorded measurements to a PC. Datalogging software may be downloaded from Honeywell. Contact us for details.
Computer must support Infra-red IrDA to download.
Vibrating Alarm Y Internal vibrating alarm

MultiPro Accessories

Honeywell Biosystems MultiPro Remote Accessories

Part # Description
54-49-102 Continuous sample pump for MultiPro. Includes 10’ of sample tubing and sample probe assembly.
54-49-104 Sample draw/calibration adapter
54-49-105 Sample draw kit. Includes adapter, squeeze bulb, 10’ of tubing and sample probe assembly.
54-05-A0403 Sample probe assembly. Does not include tubing, squeeze bulb, or sample draw adapter

Honeywell Biosystems MultiPro Sensors

Part # Description Range Resolution
54-49-80C LEL Combustible gas 0 – 100% LEL 1% LEL
54-49-90 O2 Oxygen 0 – 30%/Vol. 0.1%
54-49-25 CO Carbon Monoxide 0 – 1000 PPM 1 PPM
54-49-02 H2S Hydrogen Sulfide 0 – 200 PPM 1 PPM
54-49-14 Duo-Tox Dual channel CO/H2S
Provides substance specific readouts for CO & H2S.
CO: 0 – 1000 PPM
H2S: 0 – 200 PPM
54-49-19 CO-H, H2 resistant CO sensor 0 – 1000 PPM 1 PPM
Replacement Sensor Sets were discontinued by Honeywell effective Jan 1, 2015
54-49-200 MultiPro sensor replacement set. O2, LEL, Duo-Tox
54-49-201 MultiPro sensor replacement set. O2, LEL, CO
54-49-202 MultiPro sensor replacement set. O2, LEL, H2S




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