RKI FP-300 series High Sensitivity Toxic Gas Monitor


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FP-300 paper tape gas monitor, FP330 High Sensitivity Toxic Gas Monitor

RKI’s paper tape monitors utilize highly sensitive colorimetric tapes to achieve interference free detection at low PPB and PPM levels Ammonia, Arsine, Chlorine, Diborane, Hydrogen Chloride, Hydrogen Fluoride, Hydrogen Sulfide, Phosphine, Silane. The FP-300 is equipped with an easily replaceable tape. This model is equipped with a digital display showing the type of gas and concentration in PPM or PPB. The FP-300 will also display remaining tape life as well as an end of tape alarm.

The FP-300 has audible and visual alarms, as well as alarm relay contacts and 4-20mA output. A unique “tape saver mode” extends tape life in applications where high background gas levels may be present.

The FP-300 meets and exceeds OSHA and NIOSH compliance requirements, and does not respond to interfering gases (hydrocarbons, alcohols, solvents, CO, etc.) that may be present in industrial/manufacturing environments. FP 330


  • Small and compact
  • Highly sensitive and ideal for low gas concentrations (ppb detection)
  • Interference-free detection
  • Easy detection tape replacement with plug-in cassette
  • Tape remainder display and tape end warning alarm provided
  • Easily transportable


  • Scrubbers
  • Environmental Monitoring
  • Semiconductor Fabs
  • Manufacturing
  • Detecting uncaptured gas from scrubber

RKI FP-300 series Quick Spec

  • Category Fixed gas detector
  • Type Stand-alone gas detector
  • Target gas Sample draw
  • Detection principle Photoelectric Photometry
  • Approvals Toxic
  • Power source AC100V ~ AC220V ±10% 50/60Hz (Desk top type)DC24V ±10% (Panel mounting type)
  • Dimensions & Weight 164(W) x 198(H) x 263(D) mm, Approx 6.5kg (Desk top type)Approx. 164(W) x 164(H) x 261(D) mm, Approx 5.5kg (Panel mounting type)
  • Operating temperature & Humidity 5 to 35oC, 30 ~ 90%RH (Non-Condensing)


Riken Keiki

The RIKEN KEIKI (KRI) product lineup includes more than 100 types of gas detectors and environmental monitoring products. Riken Keiki (RKI) Single gas detector range: 
  • 03 Series Smallest Single Gas Monitor
  • GasWatch 3 – Smallest Gas Monitor
  • 04 Series Smallest Toxic Gas Monitor
  • FP-31 Formaldehyde Gas Detector
  • SP-220 Gas Leak Checker for Combustible, Toxic, Freon and Fumigation Gases
  • SC-8000 Portable Toxic Gas Monitor
Riken Keiki (RKI) Multi-gas detector range: 
  • GX-3R Personal Gas Detector
  • GX-3R Pro Gas Detector with Wireless Communication
  • GX-6000 PID Gas Monitor
  • GX-2012 Confined Space Gas Monitor
  • GX-2009 Portable Multi Gas Detector
  • Gas Tracer PPM Leak Detector
  • Eagle 2 Multi Gas Detector for LEL, O2, H2S, CO, VOC & Toxics
  • Eagle Gas Detector
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Model FP-300
Detection principle Photoelectric photometry method using tape cassette
Detection tape Plug in cassette
Detection range see the table above
Accuracy Within +/- 20% +1 of indication
Tape operation time 1 month (with now alarm)
Tape remainder display,
Tape end warning
Alarm preset point See the table above
Alarm functions Latching (standard) or self reset. Lamp (Caution: Yellow, Warning: Red) and buzzer
Self-diagnosis Sensor failure, low flow, tape failure, tape end warning, failure of tape setting, system error
External output signal 4-20mA (300 Ω at maximum load resistance)
Operating temperature & humidity 41-95°F (5~35°C)
30~90% RH (non condensing)
Power supply & power 24VDC +/- 10% for panel mounting 100 VAC, 110 VAC, 117 VAC, 220 VAC for desktop
Dimensions & weight Panel mounting: Approx. 6.5(W) x 6.5(H) x 10.3(D) Approx. 14.33lb 

Desktop: Approx. 6.5(W) x 7.8(H) x 10.4(D) Approx. 12.125lb

Gas type and Range

Gas TLV Detection Range Resolution 1st alarm 2nd alarm Tape No.
25ppm 0.5~4ppm 0.1ppm 1ppm 2ppm FC-010
50ppb 0~150ppb 1ppb 50ppb 100ppb FCL-001
0.5ppm *0~0.8ppm 0.01ppm 0.25ppm 0.5ppm FCL105
100ppb 0~300ppb 5ppb 50ppb 100ppb FCL-002
Hydrogen Chloride
5ppm 0.25~1ppm 0.025ppm 0.5ppm 0.75ppm FC-004
1.5~8ppm 0.1ppm 2.5ppm 5ppm FC-005
Hydrogen Fluoride
3ppm 0~9ppm 0.1ppm 1.5ppm 3ppm FC-006
Hydrogen Sulfide
10ppm 0~100ppm 1ppb 17ppb 34ppb FCL-001
0~10ppm 0.05ppm 1ppm 2ppm
300ppb *0~500ppb 5ppb 150ppb 300ppb FCL-001
5ppm *0~8ppm 0.1ppm 2.5ppm 5ppm FCL-002


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