SPM Flex Gas Detector Detectable Gases Default Alarm Family Response Time (T50) at 2 TLV Gas Concentr’n. (sec) Max. Sample Tubing Length (m)12 Sample Sample Line Analysis Flow Particulates Rate Filter2, 12 (cc/min ±10%) Optimum Optimum % RH Range Part Part Part Allowable Days Temp for Best Range Number Number Number After First 7,8 (ºC) Accuracy (14d) (30d) (90d) Use11 Hydrogen Sulphide (H2S) Hydrogen Fluoride (HF) Boron Trifluoride (BF3) Nitric Acid (HNO3) Mineral Acids Flex CC XP Mineral Acids Hydrogen Mineral Bromide (HBr) Acids Boron Trifluoride (BF3) (export unrestricted) Nitric Acid (HNO3) Sulfuric Acid (H2SO4) Flex CC-U XP Mineral Acids Toluene Diisocyanate (TDI, C9H6N2O2) Methylene Bisphenyl Isocyanate (MDI, C15H10N2O2) Hexamethylene Diisocyanate (HDI, C8H12N2O2) Hydrogenated Xylene Diisocyanate (H6XDI, C10H14N2O2) Isophorone Diisocyanate (IPDI, C12H18N2O2) Xylene Diisocyanate (XDI, C10H8N2O2) Hydrazine (N2H4) Monomethyl Hydrazine (MMH, CH6N2) Dimethyl Hydrazine (UDMH, C2H8N2) Tetrakis (Dimethylamido) Titanium (TDMAT, C8H24N4Ti) Trimethylamine (TMA, C3H9N) Flex CC Sulfur Dioxide Flex CC Hydrogen Peroxide 1 Source: ACGIH 2016 TLVs and BELs. 2 = 780248 (disposable particulate filter), B = 1830-0055 (filter membrane 0235-1072 must be replaced every 30 days), C = 1991-0147 (disposable filter for corrosive gases) A Outside of RH range: 3 Tends to have lower response at higher humidities. 4 Tends to increase sensitivity at higher humidities (due to the chemistry of the reaction). 5 ends to under-report at higher humidities (typically >75% RH) due to the gas characteristics to adhere or decompose on contact with water/moisture. The response seems to be lower but the actual gas concentration under these high humidity conditions will be lower than T expected. 6 Tends to under-report in dry conditions (<25-30% RH). 7 epending on the combination of temperature and humidity, even within the ranges specified above, a detector’s performance efficiency can be influenced due to condensation, physical tape material changes, or optical changes. Consult Honeywell Analytics’ Service Department. D 8 efer to TechNotes 971131 (Chemcassette®-based Instrument Accuracy and Precision) and 1998-0219 (Protocol for Testing Gas Detectors). R 9 Slow recovery: Prolonged exposure to high levels of gas/vapor (2x TLV or above) can condense in the system and may require purging with dry clean air or inert gas. 10 For information about the expiration date of the Chemcassette, refer to “Chemcassette” on page 40 (Review menu). 11 The number of days from the installation date that the Chemcassette cartridge can be used. When the allowable-days limit is reached, or if the absolute expiration date (printed on cartridge) is reached, the detector will issue an Expired Chemcassette Cartridge fault. The type of expiration is found in the event history data field for the fault (either 1 [stale] or 2 [expired]). Replace the cartridge when this fault is issued. The only exception is if the cartridge was used only briefly and then removed from the detector and properly stored in the sealed bag at the recommended temperature. In this case, the cartridge can be used past the stale-tape date (but not past the absolute expiration date) by clearing the stale-tape fault before going into monitor mode. Advance the tape manually about five inches before installing the cartridge and entering monitor mode. 12 Do not use the optional sampling wand for those gases with recommended sample tubing lengths of less than five meters and no recommended sample line particulate filter. (page from SPM Flex User Manual 1998M0