High Sensitivity Toxic Gas Monitor

Datasheet

The FP-250A is a highly sensitive toxic gas monitor using a gas detection cassette tape which is almost free of interference from other gases. As the detection tape responds by a chemical reaction with the gas being measured, there is no interference from hydrogen or organic gases. Its best application then is in monitoring of the target gas at the outlet of an absorption scrubber, as well as in monitoring of the work environment for personnel safety. Since the cassette can be replaced so quickly and easily, detection of multiple gases is practical.

Features

Interference-free detection (PPB or PPM digital display)
Detection of low gas concentrations (TLV level)
Easy to replace cassette tape (cassette remainder display included)
Easy to change to other gases by replacing the gas card
Provision for connection to personal computer (RS-232C interface: Optional)
Easy to check the detection function and alarm operation with check card
Desktop size promotes easy transportability

Applications

Environmental Monitoring
Semiconductor Fabs
Manufacturing
Detecting uncaptured gas from scrubber

Detectable Gases and Detection Ranges

Gas	TLV	Detection Range	Resolution	Measuring Cycle
Acidic Acid CH3COOH	10ppm	10ppm	0.25ppm	20 seconds
Ammonia NH3	25ppm	1ppm	0.025ppm	60 seconds
Ammonia NH3	25ppm	6ppm	0.1ppm	20 seconds
Arsine AsH3	300ppb	100ppb	2.5ppb	20 seconds
		150ppb
		200ppb
Chlorine Cl2	0.5ppm	1.5ppm	0.025ppm	20 seconds
Chlorine Cl2	0.5ppm	1.5ppm	0.01ppm	20 seconds
Chlorine Trifluoride ClF3	100ppb	500ppb	10ppb	60 seconds
Diborane B2H6	100ppb	200ppb	5ppb	60 seconds
Diborane B2H6	100ppb	300ppb	5ppb	60 seconds
Disilane Si2H6	5ppm	15ppm	0.25ppm	60 seconds
Formalin HCHO	100ppb	400ppb	5ppb	120 seconds
Hydrazine N2H4	100ppb	400ppb	5ppb	120 seconds
Hydrogen Bromide HBr	3ppm	3ppm	0.05ppm	60 seconds
Hydrogen Chloride HCl	5ppm	1000ppb	25ppb	60 seconds
Hydrogen Chloride HCl	5ppm	5ppm	0.1ppm	40 seconds
Hydrogen Fluoride HF	3ppm	9ppm	0.1ppm	20 seconds
Hydrogen Sulfide H2S	10ppm	100ppb	1ppb	180 seconds
		300ppb	5ppb	180 seconds
		1000ppb	10ppb	30 seconds
		10ppm	0.1ppm	10 seconds
Hydrogen Selenide H2Se	50ppb	200ppb	2.5ppb	60 seconds
Phosgene COCl2	100ppb	300ppb	5ppb	60 seconds
Phosphine PH3	300ppb	150ppb	2.5ppb	30 seconds
		600ppb	5ppb	20 seconds
		900ppb	5ppb	15 seconds
Silane SiH4	5ppm	15ppm	0.25ppm	60 seconds
Tertiary Butyl Arsine TBA	50ppb	150ppb	2.5ppb	90 seconds
Tertiary Butyl Phosphine TBP	300ppb	500ppb	10ppb	90 seconds
VCM CH2CHCl	5ppm	15ppm	0.25ppm	20 seconds

Specifications

Type	Desktop type, "Transportable" FP-250A
Detection Principle	Photoelectric photometry method using paper tape cassette
Detection tape	Cassette method
Detection gas	see table above
Alarm response time	Within 60 seconds when exposed to gas concentration of 1.6 times alarm point
Accuracy	Within +/- 20% of indication value +1 digit at constant conditions
Display	PPB or PPM digital display
Operating time for cassette tape	One month (with no alarm) • Tape remainder display • Alarm display at tape end
Alarm preset value	Warning: 1/6 of full scale, Alarm: 1/3 of full scale
Alarm operation	Latching (standard) or non-latching Lamp (warning - yellow, alarm - red) and buzzer
Self-diagnosis	Flow fail, warning of tape end or tape damage
Output	4-20mA (Non-isolated), 0-1VDC. (RS-232C interface-Optional)
Operating temperature & humidity	5~30°C (41~95ºF), 30~90% RH
Gas inlet/outlet	1/4" OD tubing fitting
Power supply & power	100VAC/115VAC, or 220VAC, 50/60Hz, 20VA
Dimensions & weight	10.6"(W) x 8.4"(H) x 15"(D) Approx 24lb. 270(W) x 212(H) x 380(D) mm, Approx 11kg

Specifications subject to change without notice.

What's New