The SafeTest 90 is an extremely rugged, lightweight personal single gas monitor for oxygen and one of five toxic gases.

The compact design of the SafeTest 90 slips easily into a shirt pocket or clips onto a belt.

Quest’s unique smart sensor technology allows the user to alternate sensors between O2 and one of five toxic gases without losing critical calibration information or sensor identifications.

The large, brightly backlit LCD display enables the user to view critical readings in even the most challenging environments.

 The SafeTest 90 has the loudest pulsating audible alarm available in this type of monitor. Housed in an extremely durable ABS polycarbonate and nickel alloy plated case, the SafeTest 90 gives the user superior RF protection, while withstanding even
the most hostile work environments.

For pricing and availability information regarding the purchase, service or calibration of Quest products, please email Customer Service.

For the answers to questions regarding installation, setup, operation, maintenance or trouble-shooting of Quest products, please email Technical Support.

Brochures Available:
English Version (pdf) 1.45M
Spanish Version (pdf) 1.91M

ST90 Technical Specifications

Number of Sensor Channels:

• Single

Display Type:

• Backlit LCD

Environmental:

• Operating Temp. Range: 14 to + 104° F (-10 to +40°C)
• Storage Temp. Range: 5 to + 140° F (-15 to +60°C)
• Humidity Range: 0 to 90% RH, non-continuous, non-condensing
• 15 to 90% RH continuous, non-condensing

Power:

• Battery Life: Alkaline 5,000 Hrs. Lithium 10,000 Hrs.

Mechanical:

• Case Material: ABS Polycarbonate & Nickel Alloy Plated
• Size: 1.3 x 3.0 x 3.9” (3.3 x 7.6 x 9.9 cm)
• Weight: 6.3 oz. (180 g)

Applicable Standards:

• Ingress Protection IP54
• RFI/EMI Protection Rating ANSI C95. 1-1982 & EN50082-2
• Intrinsic Safety: Class I,II,III Div. 1, Groups A,B,C,D,E,F,G
• Eex ia I/IIC T4
• CE Mark

Warranty Period:

• 2 Yrs.