The INVALCO CM7 Pilot Guard gives positive shutoff of gas to both the pilot and the main burner if the pilot flame goes out. A field-adjustable sensitivity control (screwdriver set) lets the operator tune response so gas shuts off in 20 seconds or less, regardless of the pilot flame's heat characteristics. It needs no external power, so it keeps working through power outages and at sites with no electricity. It is designed for use with the RHSB pilot burner.
Key specifications
Materials: Anodized aluminum body; 303 SS internal parts; 302 SS springs; fluoroelastomer seals
Supply pressure: 15 to 50 psig (operation not affected by variation within these limits)
Temperature limits: Sensing element 1500 °F (815 °C); base unit 150 °F (66 °C)
Reaction time: Ignition to latch-in approx. 90 seconds; flame-out to shutoff adjustable
Failure mode: Fails closed
Features: Latchable reset for one-man pilot ignition; burner port stays closed during pilot ignition; burner port vents through the pilot port on flame-out; thermocouple sensing; 15 ft thermocouple leads available
How to specify / order
CM7 with 15 ft thermocouple: P511501 (ship wt. 5 lb)
CM7 base unit only: P510720
15 ft thermocouple: P545743
Thermocouple mount: P545947
Pricing and lead time are quoted per configuration. Send the model code (or your application details), product, flow range, and pressure/temperature to Flow Measurement Services for a quote. Specifications summarized from Smith Meter (INVALCO) bulletin SSIN004 Rev 0.1 (8/17); confirm current data with the factory before ordering.
Smith Meter (formerly FMC Technologies / TechnipFMC Measurement Solutions), now manufactured by Guidant. Flow Measurement Services supplies and services Smith Meter equipment.