Page 397 - Praxair - Specialty Gases and Equipment Reference Guide

Gas Detection Systems

Direct Connect Sensors

Direct Connect Sensors Specifications – Non-Explosion Proof
O 2 H 2 S CO Toxics CO 2
Oxygen Hydrogen Sulfide Carbon Monoxide Carbon Dioxide
Sensors
Type Galvanic cell Electrochemical Electrochemical Electrochemical Infrared
Measuring Range 0 - 25% volume 0 - 100 ppm 0 - 300 ppm See Chart Below 0 - 5000 ppm
0 - 5.0% volume
0 - 50% volume
0 - 100% volume
Lower Detectable 0.1% Vol. 2% of full scale 2% of full scale 2% of full scale 2% of full scale
Limit (LDL)
Response Time (T-90) 20 seconds or less 35 seconds or less 35 seconds or less 60 seconds or less 30 seconds or less
Accuracy 0.5% volume +/- 5% of full scale +/- 5% of full scale +/- 5% of full scale +/- 5% of full scale
Life Expectancy 2 years with 2 to 3 years with 2 to 3 years with 2 to 3 years with 5 years plus with
normal service normal service normal service normal service normal service
Operating Environment
Location Indoor or outdoor, Indoor or outdoor, Indoor or outdoor, Indoor or outdoor, Indoor or outdoor,
Class I, Div. 2 Class I, Div. 2 Class I, Div. 2 Class I, Div. 2 Class I, Div. 2
Temperature -4° F to 122 °F -4° F to 122 °F -4° F to 122 °F 14 °F to 104 °F -4 °F to 122 °F
-20 °C to 50 °C -20 °C to 50 °C -20 °C to 50 °C -10 °C to 40 °C -20 °C to 50 °C
Humidity 0 - 99% RH 0 - 99% RH 0 - 99% RH 0 - 99% RH 0 - 99% RH
non-condensing non-condensing non-condensing non-condensing non-condensing
Housing
Housing J-Box Cast aluminum, Cast aluminum, Cast aluminum, Cast aluminum, Cast aluminum,
explosion-proof
Sensor Stainless steel, Stainless steel, Stainless steel, Stainless steel, Stainless steel,
explosion-proof explosion-proof explosion-proof explosion-proof explosion-proof
Controllers Compatible with the following controllers: Beacon 110, Beacon 200, and Beacon 410
Warranty One year materials One year materials One year materials One year materials One year materials
and workmanship and workmanship and workmanship and workmanship and workmanship

Ordering Information – Sensor With J-Box Ordering Information – Sensor Only
Description Part Number Description Part Number
O 2 Oxygen PRS65-2497RK O 2 Oxygen PRS65-2494RK
Section E – Gas Handling Equipment
O 2 Oxygen PRS65-2502RK* O 2 Oxygen PRS65-2510RK*
H 2 S Hydrogen Sulfide PRS65-2498RK H 2 S Hydrogen Sulfide PRS65-2495RK
CO Carbon Monoxide PRS65-2499RK CO Carbon Monoxide PRS65-2496RK
CO 2 Carbon Dioxide (0 - 5000 ppm) PRS61-1007RK-02 CO 2 Carbon Dioxide (0 - 5000 ppm) PRS61-0198RK-02
CO 2 Carbon Dioxide (0 - 5.0% volume) PRS61-1007RK-03 CO 2 Carbon Dioxide (0 - 5.0% volume) PRS61-0198RK-03
CO 2 Carbon Dioxide (0 - 50% volume) PRS61-1007RK-05 CO 2 Carbon Dioxide (0 - 50% volume) PRS61-0198RK-05
CO 2 Carbon Dioxide (0 - 100% volume) PRS61-1007RK-10 CO 2 Carbon Dioxide (0 - 100% volume) PRS61-0198RK-10
* Partial pressure sensor for helium (He) applications. * Partial pressure sensor for helium (He) applications.
Consult your Praxair representative for details. Consult your Praxair representative for details.

Ordering Information – Toxic Sensor Transmitter (optional junction box)
Part Number With J-Box Part Number Without J-Box Gas Range
65-2301RK-AsH3 65-2300RK-AsH3 Arsine (AsH 3 ) 0 - 1.5 ppm
65-2301RK-NH3 65-2300RK-NH3 Ammonia (NH 3 ) 0 - 75.0 ppm
65-2301RK-HCN 65-2300RK-HCN Hydrogen Cyanide (HCN) 0 - 15 ppm
65-2301RK-PH3 65-2300RK-PH3 Phosphine (PH 3 ) 0 - 1.00 ppm
65-2301RK-SO2 65-2300RK-SO2 Sulfur Dioxide (SO 2 ) 0 - 6.00 ppm

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