Koolance INS-FM18D Coolant Flow Meter with Display INS-FM18D combines an LCD display with Koolance's stainless steel flow meter in a small footprint. The display shows flow rate in liters per minute (LPM) only. A 12VDC connection is required for power. Primary materials are a stainless steel body with nickel-plated brass G 1/4 BSPP threads. Additional Specifications &bullet; Materials: Nickel-Plated Brass, Brass, PMMA Acrylic, Stainless Steel, POM Acetal, Plastic, SmCo5 &bullet; Max Temperature: 100&deg;C (212&deg;F) &bullet; Max Pressure @ 25&deg;C: 10kgf/cm2 (142.2psi) &bullet; Min Temperature: 0&deg;C (32&deg;F) &bullet; Flow Rate Range: 2.0-15 LPM (32-240 GPH) &bullet; Accuracy (Approx.): +/-5%.