The PhD5 was officially discontinued on 1/1/2009
Servicing and spare parts were available until December 31, 2010
Contact us for sensor availability

Replaced by the Biosystems PhD6 Multi-Gas Detector

Biosystems PhD⁵ Gas Detector
From Sperian Instruments now Honeywell Analytics

Monitor Up to 5 Gases Simultaneously

The Biosystems PhD5 monitors up to five atmospheric hazards simultaneously, including oxygen, combustible gas, and up to three channels of toxic gas detection. Choose from a wide variety of toxic sensors; including Biosystems' innovative "Duo-Tox" two-channel CO/H2S sensor to measure both carbon monoxide and hydrogen sulfide when both hazards are present without cross interference.

Sensors available include:

Oxygen (O2)	Ammonia (NH3)
LEL combustible gas	Chlorine (non-specific (Cl2)
Carbon Monoxide (CO)	Chlorine (specific) Cl2
Dual purpose "Duo-Tox" CO/H2S	Chlorine Dioxide (non-specific) (ClO2)
Reduced sensitivity to hydrogen (CO-H)	Chlorine Dioxide (specific) (ClO2)
Sulfur Dioxide (SO2)	Nitric Oxide (NO)
Sulfur Dioxide, extended range (SO2-EXT)	Nitrogen Dioxide (NO2)
Hydrogen Cyanide (HCN)	Phosphine (PH3)

The Biosystems PhD⁵ is housed in a rugged, metal-plated case designed to stand up to the most demanding environments. While all procedures necessary for day-to-day operation, including fully automatic calibration adjustment, are still controlled through a single button, an easy-to-read graphics display and navigation keys to make the PhD⁵ even easier to use than earlier versions.

Biosystems PhD⁵ detectors may be ordered with or without datalogging. Datalogging PhD⁵ detectors may be additionally equipped with Biosystems' unique "Touch ID" automatic memory download system. The system uses small, nearly indestructible memory buttons to store user ID and location information for the environment being monitored. It even stores the language preferences of the instrument user. The inexpensive buttons can be attached to worker ID badges, key rings, or permanently mounted to the external structures of frequently entered confined spaces. All you need to do is touch the built-in reader to the button to automatically download the stored  information. Keeping good records is a critical part of every confined space program. With "Touch ID" keeping good records is made easy with the touch of a button!

• Easy to use: All procedures necessary for day-to-day operation, including automatic calibration adjustment, are controlled through a single On / Off "Mode" button. 
• Small package; rugged design: The PhD⁵ is completely sealed against the elements. The rugged metal-plated case is designed to minimize radio frequency interference. 
• Four sensors / five channels of detection:Choose from O₂, LEL, and a wide selection of substance-specific toxic sensors; or choose Biosystems' innovative new "Duo-Tox" two-channel CO/H₂S sensor for the simultaneous measurement of both CO and H₂S without cross interference! 
• Automatic calibration adjustment: "One Button Auto Calibration" is available any time while the PhD⁵ is in normal operation. All you have to do is press the "Mode" button, attach the adapter, and flow gas to the sensors. All the adjustments are made automatically. 
• Interchangable NiCad or alkaline battery packs: Either type of snap-in pack provides up to 12 hours of continuous operation. 
• Datalogging with "Touch ID": PhD⁵ detectors may be ordered with ot without datalogging. Datalogging instruments may be additionally equipped with Biosystems' unique "Touch ID" automatic memory download system. "Touch ID" buttons store user ID, location information, and even the language preferences of individual users. With "Touch ID" keeping good records is yours with the touch of a button! 

WARNING! Honeywell Analytics - Biosystems equipment should only be used in conjunction with the manufacturer's instructions. Failure to follow such instructions could result in serious injury or fatality.