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

Daily Weekly Monthly
$75.00 $255.00 $765.00

The portable TLV Sniffer is an extremely sensitive combustible gas and vapor sensing instrument with an overall detecting sensitivity range of 1 to 10,000 parts of gas or volatile flammable vapor per million parts of air (by volume). Measurement levels of up to 100,000 ppm are achievable with the optional dilution probe accessory. The TLV Sniffer catalytically oxidizes gas in a pumped-in sample of air by means of a catalyst-coated resistance element. The reading is obtained by measuring the electrical balance of the catalytic element as compared to the resistance of a reference element. The TLV sniffer readings are resistant to humidity and temperature since both the active and reference elements are affected equally by these conditions. The rental monitor comes pre-calibrated to 500 ppm hexane by our environmental specialists, including a calibration record.

Rental Includes:
TLV Sniffer
Water Trap Filter
Carrying Strap
Battery Charger
Sample Hose and Wand
Hard Case
EEI Calibration Record

Simple operation, no special training required.

On-the-spot results

Portable, completely self-contained, weighs only 5 lb..


Readings automatically compensated for battery voltage changes, temperature variations, and differences in altitude

Audible alarm

Activates when gas concentrations exceed user adjustable set point or meter needle falls below zero.  Also alerts user of low battery condition

Precision meter

Easy to read parallax mirror scale with clear graduations

Long life sensor

Non reductive and resists poisoning by lead or silicone

Recorder output

Time weighted evaluation or permanent record

Rechargeable battery pack

Over 8 hours of continuous operation

Earphone operation

For areas of high ambient noise

Aggressive Fluid Vapor Recovery System Monitoring (AFVR)

VOC Detection

Gas Leak Detection

Combustible Gas Detection

Function Measurement of low concentrations of flammable vapors, relative to health, safety, and pollution control standards 
Standard Measuring Ranges Calibrated on Hexane: 0-100, 0-1000, and 0-10,000 ppm
With Optional Dilution probe: 0-100, 0-1000, 0-10,000, 0-100,000 ppm (0-10% by volume)
Accuracy & Reliability The extent to which meter readings correspond to actual parts per million of combustible gases in sampled air depend upon (1) the internal electrical stability of the instrument, (2) proper calibration of the instrument on gas mixtures of known concentration, and (3) purity of the air sample used for meter pointer zero setting.
Sensor Type Catalytic combustion - long-life, non reductive and resistant to poisoning by lead and silicones
Minimum Detectable Concentrations 2 ppm
Sampling Method Integral pump
Sample Flow 1,750 cc/minute nominal (with inline filter and hose probe assembly)
Recorder Output Range: 0-100 MV; Impedance: 10,000 ohms or greater
Audible Alarms Pulsating tone activated when user adjusted set point is exceeded
Battery Capacity Better than 8 Hours continuous operation with nickel cadmium rechargeable batteries
Display Precision analog meter with Parallax Mirror scale and clear graduations
Operating Temperature 14o to 120o F (-10o to 49o C)
Response Time 90% of final reading in less than 30 seconds
Warm-up Time One minute
Housing Construction Reinforced metal top, end panels and carrying handle with tough ABS Plastic wrap around side cover
Dimensions 9" L x 3.75" W x 6.625" H
Weight 5 lb..
Hazardous Area Use FM approved Intrinsically Safe for use in Class I, Division I, Groups C and D; and Non-Incendive, for Class I, Division 2, Groups A, B, C, and D
Title Description Download
Scott / Bacharach TLV Sniffer Manual Operator's Manual PDF Icon
Dilution Probe
TLV Dilution Probe
Daily Weekly Monthly
$10.00 $30.00 $70.00
TLV Calibration Kit*
(500ppm Hexane)
PID Calibration Kit
Daily Weekly Monthly
$15.00 $45.00 $135.00

*NOTE: All Organic Vapor Analyzers and Gas Meters are calibrated prior to each rental. Calibration kit rentals are only available for local pickup and deliveries in the Charlotte, NC area. We do not ship calibration kits for rental since the return shipper must be a certified hazardous materials shipper. If you wish to purchase calibration gas, please call for pricing.