MS9 All-Welded Seal Gauge
MS9 Flanged Connection
MS9 Direct Mounted to Smart Transmitter
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The Reotemp MS9 is a high-accuracy diaphragm seal developed primarily for low pressure applications. The MS9 offers improved temperature stability, critical for outdoor installations.

  • Extra-Large Diaphragm for High Accuracy, High Displacement, or Low Pressure Applications
  • Reduce/Eliminate Fugitive Emissions
  • Eliminate Potential Leak Points
  • Tamper Resistant
  • No Internal Gasket, Ideal for High Temperatures and Long Life

Accuracy With appropriate pressure range, seal gauge accuracy is gauge accuracy plus 0.5%. (May be subject to thermal error. Consult factory with questions.)
Ambient Limits -40°F/150°F
Process Limits with Diaphragm Seal -40°F/400°F (Direct Mount)*
-110°F/750°F (Remote Mount or Cooling Tower)*
*Exact limits depend on diaphragm seal and fill fluids.
Wetted Materials Diaphragm and Lower Connection: 316LSS, Hast. C-276 and Others
Gasket: None
Lens Tempered Safety Glass , Plastic or Laminated Safety Glass
Other Materials Upper Housing: 316SS, Monel and Others
Fillable Yes (Ranges of 10 psi and Higher)
Maximum Working Pressure (Threaded) 500 psi
Maximum Working Pressure (Flanged) Flange Rating (Max of 750 psi)
Environmental Protection NEMA 4X/IP65 (Ranges of 10 psi and Higher)
Weight 5-8 lbs (Seal Only)