No. SS2-HEP180-0100 Azbil Corporation - 2 - Electrical connection G1/2, 1/2 NPT (standard) Ambient temperature range Model HEP18/19: -30 to +80°C Model HEP28/29: -40 to +80°C Ambient humidity range 10 to 90% RH Performance Accuracy ± 1% F.S. Dead band Within 0.1% F.S. (model HEP18/19) Within 0.2% F.S. (model HEP28/29) Travel adjustment range 10 to 100 mm Operation speed (max.) Model HEP18/19: 4 mm/s (for HA2D and R actuator) Maximum voltage and current Vmax = 30V, Imax = 100 mA (model HEP19/29) Type of protection FM Explosionproof approval (model HEP18/28) Explosionproof for Class I, Division 1, Group B, C, D Dust-ignitionproof for Class II, Division 1, Group E, F, G Suitable for combusible fibers; Class III, Division 1 Water-tight, corrosion-tight; NEMA type 3, 4X FM Intrinsically safe approval (model HEP19/29) Intrinsic Safety for Class I, II, III Division 1 Group A, B, C, D, E, F, G Nonincentive for Class I, Division 2, Group A, B, C, D Water-tight, corrosion-tight NEMA 3,4X Additional mechanism (factory-mounted upon request) Model KZ03 pressure regulator with filter Outer dimensions Refer to Figure 2 and Table 4. Weight Model HEP18/19 3.5 kg (4.2 kg with pressure regulator with filter) Model HEP28/29 4.0 kg (4.7 kg with pressure regulator with filter) Housing Aluminum alloy Finish . Standard finish (acrylic-baked) . Corrosion-proof finish (epoxy-baked, Y138B) . Corrosion-proof silver finish (acrylic-baked, Y138D) Note) Silver finish is not suitable in alkaline atmospheres. Standard finish colors Case: Dark beige (Munsell 10YR 4.7/0.5) Cover: Light beige (Munsell 4Y 7.2/1.3) a. Reverse-action actuator b. Direct-action actuator Figure 1 Input/Output characteristics Selection of input/output characteristics Since control valve flow rate characteristics are set by the selection of valve plug characteristics, select linear as the input/output characteristics of the positioner. However, if the valve plug's flow rate characteristics, which are determined by the valve type and structure, are not what is required, select equal-percentage or quick-opening. Overall flow rate characteristics of control valve can then be adjusted with the positioner. 100 Travel (%) 0 Input signal (%) 100 Quick-opening Linear Equal percentage 100 Travel (%) 0 Input signal (%) 100 Quick-opening Linear Equal percentage Table 1 Adjustment of control valve flow rate characteristics using positioner Valve plug characteristics I/O characteristics of positioner Overall flow rate characteristics of control valve Linear Quick-opening Quick-opening Linear Equal-percentage Equal-percentage Equal-percentage Quick-opening Linear