Register
View Cart (0 Items)
800-813-5408
Browse Close
800-813-5408
Search Store
Browse Store
Apollo Safety
Request Catalog
Mailing List
Sign up for our newsletter
Contact Us
Apollo Safety
36 Fifth Street
Fall River, MA 02721
508-673-2544

Replacement Sensors

Did you know sensors for gas monitors have a lifespan? Gas monitors are made to last for years, but old sensors can mean false readings and faulty equipment. Luckily for you, most gas monitors have field replaceable sensors making it easy to keep your devices running. Apollo Safety has replacement sensors for the most popular single and multi-gas monitors on the market. 

Prices are subject to change without notice due to ongoing tariff adjustments and market conditions. For the most accurate and up-to-date pricing, please contact us directly.

Narrow it down
1039 products found. Showing 1001 - 1039Page: << 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
Sensor,Oxygen,OS-8071, fixed system special Type Sensor,Oxygen,OS-8071, fixed system special Type

SKU: OS-8071

Price: $334.00
In Stock
Sensor,Oxygen,OS-8078, fixed system special Type Sensor,Oxygen,OS-8078, fixed system special Type

SKU: OS-8078

Price: $274.00
In Stock
Sensor,Ozone,0-0.6 PPM,for GD-K77D (ESM-K239C-S-03) Sensor,Ozone,0-0.6 PPM,for GD-K77D (ESM-K239C-S-03)

SKU: ESM-K239C-O3-06

Price: $505.00
In Stock
Sensor,Ozone,0-1 PPM,for GD-K77D,low humidity Sensor,Ozone,0-1 PPM,for GD-K77D,low humidity

SKU: ESM-K239CL-O3

Price: $505.00
In Stock
Sensor,Ozone,0-1 PPM,new style,low humidity Sensor,Ozone,0-1 PPM,new style,low humidity

SKU: ES-K239CL-O3

Price: $485.00
In Stock
Sensor,PF3 (phosphorous trifluoride),0-10.0 PPM,for GD-70D Sensor,PF3 (phosphorous trifluoride),0-10.0 PPM,for GD-70D

SKU: ESU-23DH-PF3

Price: $525.00
In Stock
Sensor,PH3,0-1 PPM,for GD-K77D Sensor,PH3,0-1 PPM,for GD-K77D

SKU: ESM-23DH-PH3

Price: $505.00
In Stock
Sensor,R32 (difluoromethane, CH2F2),0-60 ppm,for GD-70D Sensor,R32 (difluoromethane, CH2F2),0-60 ppm,for GD-70D

SKU: ESU-K233-R32

Price: $525.00
In Stock
Sensor,SG-8511,0 - 2000 ppm propylene Sensor,SG-8511,0 - 2000 ppm propylene

SKU: SG-8511-C3H6-2K

Price: $314.00
In Stock
Sensor,SG-8511,0 - 5000 ppm hydrogen Sensor,SG-8511,0 - 5000 ppm hydrogen

SKU: SG-8511-H2-5K

Price: $314.00
In Stock
Sensor,SG-8513,0-1000 ppm vinyl chloride monomer (VCM) Sensor,SG-8513,0-1000 ppm vinyl chloride monomer (VCM)

SKU: SG-8513-VCM-1K

Price: $314.00
In Stock
Sensor,SG-8513,0-2000 ppm vinyl chloride monomer (VCM) Sensor,SG-8513,0-2000 ppm vinyl chloride monomer (VCM)

SKU: SG-8513-VCM-2K

Price: $314.00
In Stock
Sensor,SG-8513,0-500 ppm vinyl chloride monomer (VCM) Sensor,SG-8513,0-500 ppm vinyl chloride monomer (VCM)

SKU: SG-8513-VCM-500

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0 - 9000 ppm R32 (difluoromethane,CH2F2) Sensor,SG-8521,GD-D8V/A8V,0 - 9000 ppm R32 (difluoromethane,CH2F2)

SKU: SG-8521-R32-9K

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0-100 ppm ACN (acrylonitrile) Sensor,SG-8521,GD-D8V/A8V,0-100 ppm ACN (acrylonitrile)

SKU: SG-8521-ACN

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0-100 ppm MIBK (methyl isobutyl ketone) Sensor,SG-8521,GD-D8V/A8V,0-100 ppm MIBK (methyl isobutyl ketone)

SKU: SG-8521-MIBK100

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0-1000 ppm EO (Ethylene Oxide) Sensor,SG-8521,GD-D8V/A8V,0-1000 ppm EO (Ethylene Oxide)

SKU: SG-8521-EO-1K

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0-1000 ppm isobutane (C4H10) Sensor,SG-8521,GD-D8V/A8V,0-1000 ppm isobutane (C4H10)

SKU: SG-8521-ISOB-1K

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0-1000 ppm propyl acetate Sensor,SG-8521,GD-D8V/A8V,0-1000 ppm propyl acetate

SKU: SG-8521-PA-1K

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0-2000 ppm H2 Sensor,SG-8521,GD-D8V/A8V,0-2000 ppm H2

SKU: SG-8521-H2-500

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0-2000 ppm methanol (CH3OH) Sensor,SG-8521,GD-D8V/A8V,0-2000 ppm methanol (CH3OH)

SKU: SG-8521-MET-2K

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0-2000 ppm MMA (C5H8O2) Sensor,SG-8521,GD-D8V/A8V,0-2000 ppm MMA (C5H8O2)

SKU: SG-8521-MMA-2K

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0-300 ppm toluene (C7H8) Sensor,SG-8521,GD-D8V/A8V,0-300 ppm toluene (C7H8)

SKU: SG-8521-TOL

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0-500 ppm ACN (acrylonitrile) Sensor,SG-8521,GD-D8V/A8V,0-500 ppm ACN (acrylonitrile)

SKU: SG-8521-ACN-5

Price: $314.00
In Stock
Sensor,SG-8521,GD-D8V/A8V,0-500 ppm MEK (C4H8O) Sensor,SG-8521,GD-D8V/A8V,0-500 ppm MEK (C4H8O)

SKU: SG-8521-MEK-500

Price: $314.00
In Stock
Sensor,Si2H6 (disilane),0-15.0 PPM,for GD-70D (H2 resistant) Sensor,Si2H6 (disilane),0-15.0 PPM,for GD-70D (H2 resistant)

SKU: ESU-23AH-SI2H6

Price: $525.00
In Stock
Sensor,SiH4 (silane),0-2.00 PPM,for GD-70D Sensor,SiH4 (silane),0-2.00 PPM,for GD-70D

SKU: ESU-23DH-SIH4-2

Price: $525.00
In Stock
Sensor,TC,TE-7560 in 1/2" NPT, RKI potted style Sensor,TC,TE-7560 in 1/2" NPT, RKI potted style

SKU: 61-0180RK

Price: $441.00
In Stock
Sensor,TEMAH,0-15 PPM Sensor,TEMAH,0-15 PPM

SKU: ES-23RV-TEMAH

Price: $485.00
In Stock
Sensor,TEMAH,0-15 PPM,GD-K77D Sensor,TEMAH,0-15 PPM,GD-K77D

SKU: ESM-23RV-TEMAH

Price: $505.00
In Stock
Sensor,TEOS,0-15 ppm,for GD-70D Sensor,TEOS,0-15 ppm,for GD-70D

SKU: ESU-23-TEOS

Price: $525.00
In Stock
Sensor,thermal conductivity,0-100 %volume CH4,1/2 NPT,with guard Sensor,thermal conductivity,0-100 %volume CH4,1/2 NPT,with guard

SKU: TE-7550-CH4-01

Price: $790.00
In Stock
Sensor,thermal conductivity,0-100 %volume CH4,1/2 NPT,without guard Sensor,thermal conductivity,0-100 %volume CH4,1/2 NPT,without guard

SKU: TE-7550-CH4-02

Price: $790.00
In Stock
Sensor,thermal conductivity,0-100 %volume H2,1/2 NPT,with guard Sensor,thermal conductivity,0-100 %volume H2,1/2 NPT,with guard

SKU: TE-7550-H2-H-01

Price: $790.00
In Stock
Sensor,thermal conductivity,0-100 %volume H2,1/2 NPT,without guard Sensor,thermal conductivity,0-100 %volume H2,1/2 NPT,without guard

SKU: TE-7550-H2-H-02

Price: $790.00
In Stock
Sensor/XP Stainless Steel j-box,CO,CT7,CSA version Sensor/XP Stainless Steel j-box,CO,CT7,CSA version

SKU: 65-2437RKSS-05

Price: $665.00
In Stock
Sensor/XP stainless steel j-box,H2S,CT7,CSA version Sensor/XP stainless steel j-box,H2S,CT7,CSA version

SKU: 65-2427RKSS-05

Price: $665.00
In Stock
Sensor, Hydrogen (H2), 0-1000 ppm, MOS sensor/amp unit for GD-70D Sensor, Hydrogen (H2), 0-1000 ppm, MOS sensor/amp unit for GD-70D

SKU: SGU-8541-H2-1K

Price: $515.00
In Stock
Transmitter/sensor/XP stainless steel j-box,S2 series,H2 specific dual-pot MOS,0-2000 ppm linearized Transmitter/sensor/XP stainless steel j-box,S2 series,H2 specific dual-pot MOS,0-2000 ppm linearized

SKU: 65-2445SS-2000

Price: $960.00
In Stock

1039 products found. Showing 1001 - 1039Page: << 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
© 2025 Copyright Apollo Safety. All Rights Reserved.
Apollo Safety
36 Fifth Street
Fall River, MA 02721
508-673-2544
sales@apollosafety.com

Veteran Owned Small Business