Specifications Technical Data for RHM Flow Sensors 4 NOTE: The above-listed data covers standard meters, only. For special needs (temperature, pressure, material, process connections, etc), please contact the Liquid Controls factory. ACCURACY: Meter performance capable of: Mass Flow: +/- 0.2% of rate over range 20:1 +/- 0.5% of rate over range 50:1 Density: RHM06 & RHM08; 0.010 g/cc RHM12 thru RHM20; 0.005 g/cc RHM30 thru RHM160; 0.002 g/cc Temperature: +/- 1.8˚ F or 0.4% of reading REPEATABILITY: Meter performance capable of: Mass Flow: +/- 0.1% of rate Temperature: +/- 1.8˚ F TEMPERATURE RANGE: Transmitter: 15 ˚ F to 122˚ F Flow Sensor: Temperature Range: N -4 to 248°F T -328 to 122°F E -58 to 410°F H 32 to 662°F VISCOSITY RANGE: Flow Sensor: Unlimited MATERIALS OF CONSTRUCTION: Tubes supplied in 316 Ti, standard. Hastelloy or Tantalum ( wetted parts) available on request. AGENCY APPROVALS: Flow Sensor Environmental: NEMA 4X Electrical: CSA Intrinsically Safe, Class I, Division 1, Groups A, B, C, D Sanitary: 3 A Approval available on meters with serial flow tubes Transmitter Environmental: Model RHE07 (IP20) Model RHE08 (IP64) Electrical: Model RHE08, Class I, Division 2, Groups C & D non-incendive Model RHE11, EEx de {ia} IIC Explosion Proof Type Pressure Flow Measurement Range, (lbs/min) Process Rating, psi Connections, inches Parallel Serial Standard Special Standard Threaded Flanged Meters Order Meters Meters (20:1) (50:1) (20:1) *Numbers in parentheses are for special order higher pressure tubes with increased wall thickness. Flow rates shown (in italics) are maximum flow rates for Special Order Meters calibrated to provide a 50:1 flow measurement range. Consult factory for special construction details. RHM015 4717 0.008-0.17 0.008-0.4 0.004-0.08 1/4’’ 1/2” RHM03 2177 (4717)* 0.22-4.4 0.22-11 0.11-2.20 1/4” 1/2” RHM04 2177 0.44-8.8 0.44-22 0.22-4.40 1/4” 1/2” RHM06 2903 (5800)* 1.10-22.0 1.10-55 0.55-11.0 1/2” 1” RHM08 4354 2.20-44.0 2.20-110 1.10-22.0 1/2” 1” RHM12 2903 (4350)* 4.40-88 4.40-220 2.20-44.0 3/4” 1” RHM15 2177 (4350)* 8.81-176 8.81-440 4.40-88.0 3/4” 1” RHM20 2177 (3600)* 13.2-264 13.2-660 6.60-132 1” 2” RHM30 2177 (3600)* 22.0-440 22.0-1100 11.0-220 1-1/2” 2” RHM40 2177 (3600)* 66.1-1322 66.1-3305 33.0-660 N.A. 3” RHM60 580 (2900)* 110-2200 110-5500 55-1100 N.A. 3” RHM80 550 (2175)* 350-7000 350-17500 N.A. N.A. 6” RHM160 800 661-13220 661-55000 N.A. N.A. 12”
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