Sanitary Pressure Transmitter

Transcription

1 Product Data Sheet Sanitary Pressure Transmitter A TRADITION OF EXCELLENCE IN PERFORMANCE Absolute or gage pressure ranges from 0 3 to psi 0.20% reference accuracy, including linearity, hysteresis, repeatability 20:1 turndown 0.1% of URL per year stability Features CIP/SIP service with an upper temperature limit of 284 F (140 C) Communicates via the HART protocol Microprocessor-based Electronics Dual compartment housing (watertight electronics compartment) Modular design allowing for quick, inexpensive repairs RFI protection Individually characterized and digitally compensated for optimum performance throughout the operating region External zero and span adjustments ENGINEERED FOR SANITARY APPLICATIONS Conforms to 3-A Sanitary Standards USDA accepted design Mounts with either 1 1 /2- or 2-in. Tri-Clamp connection Neobee M-20 fill fluid R Pressure-213

2 Sanitary Pressure Transmitter INTRODUCTION The Rosemount Pressure Transmitter (1) is a microprocessor-based sanitary pressure transmitter that conforms to 3-A Sanitary Standards. It features product contact surfaces designed for CIP cleaning, and materials of construction Generally Recognized As Safe (GRAS) by the FDA. The sanitary fill fluid Neobee M-20 is approved as an indirect food additive according to the FDA of Federal Regulations Title 21. The solid-state, polysilicon pressure sensor, shown in Figure 3, is closely coupled with the product surface using a small amount of Neobee fill fluid. This provides superior performance and fast dynamic response. The isolating diaphragm is 316L stainless steel. The sanitary design provides a product contact surface that is easy to clean and able to withstand thermal shocks. APPLICATIONS The design is small, stable, and reliable, making it an ideal choice for food and pharmaceutical applications, including the following: fermentation vessel pressure, CIP source center discharge pressure, line pressure, spray dry, homogenizer or separator stuffing pressure, HTST pasteurization, and back pressure control. The transmitter is small enough to mount directly on process lines and vessels without additional supports. With an upper process temperature of 284 F (140 C), the transmitter is also well suited for applications that require hightemperature steam cleaning. Designed for sanitary applications, it easily connects to your process through standard sanitary fittings without requiring special mounting hardware. The is available with both 1 1 /2- and 2-inch Tri-Clamp process connections. FEATURES The provides accurate, stable, and reliable pressure measurement in your most difficult applications. State of the art, microprocessor-based error correction and Rosemount thin-film polysilicon sensing technology delivers impressive performance for this price. These features reduce the time spent in calibrating and resetting transmitter zero shifts. The has ambient temperature sensing capability. The microprocessor-based circuitry uses FIGURE 1. The Sanitary Pressure Transmitter. this temperature measurement to make corrections to the pressure measurement and minimize the effects of temperature changes. This greatly reduces the errors caused by temperature cycles and the amount of time spent adjusting the transmitter output. A two-compartment electronics housing provides an integral junction box with easy access to test terminals on either side of the transmitter. The electronics are housed in a separate airtight compartment, and the modular design allows easy replacement of the circuit board. OPERATION When pressure is applied to an isolating diaphragm, it is transmitted to the polysilicon sensor by means of a Neobee fill fluid, as shown in Figure 3. With a gage pressure transmitter, the reference side of the sensor is exposed to atmospheric pressure; absolute pressure transmitters have a sealed vacuum reference. Applying process pressure to the sensor creates a very small deflection of the sensing diaphragm; which in turn, applies strain to a Wheatstone bridge circuit in the sensor. The change in resistance is sensed and converted to a digital signal for processing by the microprocessor. This digital signal is then converted to a 4 20 ma dc signal proportional to the applied process pressure AB (1) *May be protected by the following U.S. Patent Nos.: 4,970,898 and 5,083,091. May Depend on Model. U.S. and Foreign Patents Issued and Pending. Pressure-214

3 Rosemount Inc. Certification Label Electronics Housing Assembly Terminal Block O-ring Cover Electronics Module S-A08F FIGURE 2. Transmitter Exploded View. Alarm Output Switch LCD Resistance Element Environmentally Sealed Isolating Diaphragm B05A Security Switch A18A FIGURE 3. Sensing Element. FIGURE 4. Optional LCD Meter. Pressure-215

4 Sanitary Pressure Transmitter MODEL 2090F SPECIFICATIONS Functional Specifications Service Liquid, gas, vapor, and high-viscosity applications. Ranges Range Minimum Span Output 4 20 ma dc/digital HART Protocol. Load Limitations Maximum loop resistance is determined by the power supply voltage, as described by the following equation: Power Supply External power supply required. Transmitter operates on V dc with no load. Reverse polarity protection is standard. Zero Elevation and Suppression Zero can be suppressed between atmosphere (2090FG), or 0 psia (2090FA) and upper range limit, if the calibrated span is equal to or greater than the minimum span, and the upper range value does not exceed the upper range limit. No vacuum calibrations are allowed on the G. Overpressure Limits Range 1:120 psig max. All other ranges: Twice the upper range limit. Temperature Limits Process 4 to 284 F ( 20 to 140 C). Ambient 4 to 185 F ( 20 to 85 C). Storage 22 to 185 F ( 30 to 85 C). URL/Max. Span Sensor Limit 1 1.5psi(103mbar) 30psi(2.06bar) psi (517 mbar) 150 psi (10.34 bar) 3 40 psi (2.76 bar) 300 psi (20.68 bar) Max. Loop Resistance = 43.5 (Power Supply Voltage Load (ohms) Operating Region Power Supply Output S (dc Volts) (1) For hazardous location approvals, power supply must not exceed 36 V. Process temperatures above 185 F (85 C) require lowering the ambient limits by a 1.5:1 ratio: Max. Ambient temperature in F = 185 (Process Temp 185) Max. Ambient temperature in C = Humidity Limits 0 100% relative humidity. Volumetric Displacement Less than cm (Process Temp 85) 1.5 Turn-on Time 2.0 seconds, no warm-up required. Failure Alarm If self-diagnostics detect a sensor or microprocessor failure, the analog signal is driven either high or low to alert the user. High or low failure mode is user-selectable by a jumper on the transmitter. The values to which the transmitter drives its output in failure mode depend on whether it is factory-configured to standard or NAMUR-compliant operation. The values for each are as follows: Standard Operation Linear Output:3.9 I 20.8 Fail High:I ma Low:I 3.75 ma NAMUR-Compliant Operation Linear Output:3.8 I 20.5 Fail High:I 22.5 ma Low:I 3.6 ma Transmitter Security Activating the transmitter security function prevents changes to the transmitter configuration, including local zero and span adjustments. Security is activated by an internal switch. Performance Specifications (Zero-based spans, reference conditions, and 316 SST isolating diaphragm.) Reference Accuracy ±0.20% of calibrated span. Includes combined effects of linearity, hysteresis, and repeatability. Ambient Temperature Effect per 100 F (56 C) ±(0.3% URL + 0.3% of span) from 40 to 185 F ( 40 to 85 C). Total effect includes zero and span effects. Stability ±0.10% of upper range limit for 12 months. Time Response Less than 200 ms time constant (63.2% response to a step change in pressure). Vibration Effect Less than ±0.1% of upper range limit when subjected to vibration of: peak to peak constant displacement of 4 mm (5 15 Hz) and constant acceleration of 2 g ( Hz) and 1 g ( Hz). Pressure-216

5 Rosemount Inc. Power Supply Effect Less than 0.01% of calibrated span per volt. Mounting Position Effect Zero shift of up to 1.2 inh 2 O (0.3 kpa), which can be calibrated out. No span effect. RFI Effect Less than ±0.25% of upper range limit from MHz at 30 V/m with leads in conduit. Less than ±0.25% of upper range limit at 10 V/m with unshielded twisted pair (no conduit). Ordinary Location Certification Factory Mutual (FM) Approval As standard, the transmitter has been examined and tested to determine that the design meets basic electrical, mechanical, and fire protection requirements by FM, a nationally recognized testing laboratory (NRTL) as accredited by the Federal Occupational Safety and Health Administration (OSHA). Hazardous Locations Certifications Hazardous Locations Certifications Pending for Model 2088F Smart (Option S). Factory Mutual (FM) Approvals E5 Explosion Proof for Class I, Division 1, Groups B, C, and D. Dust-Ignition Proof for Class II, Division 1, Groups E, F, and G. Suitable for Class III, Division 1, indoor and outdoor (NEMA 4X) hazardous locations; factory sealed. I5 Instrinsically safe for use in Class I, Division 1, Groups A, B, C, D; Class II, Division 1, Groups E, F, and G; and Class III, Division 1 when connected in accordance with Rosemount drawing Non-incendive for Class I, Division 2, Groups A, B, C, and D. K5 Combination of E5 and I5. I5 Connection Parameters FM I5 Connection Parameters V max =30Vdc I max =165mA I max =225mA P max =1W Ci = mÿþ Li = 20 m Approved Groups C G Canadian Standards Association (CSA) Approvals C6 Explosion Proof for Class I, Division 1, Groups B, C, and D. Dust-Ignition Proof for Class II, Division 1, Groups E, F, and G. Suitable for Class III, indoor and outdoor hazardous locations, CSA enclosure Type 4X; factory sealed. Approved for Class I, Division 2, Groups A, B, C, and D. Intrinsically Safe for Class I, Division 1, Groups A, B, C, and D. Temp. T3C. (Intrinsically safe when connected with approved barriers in accordance with Rosemount drawing ) CSA I. S. Connection Parameters CSAI.S.ConnectionParameters V max =30Vdc/R min =330Ohms V max =28Vdc/R min =300Ohms V max =25Vdc/R min =200Ohms V max =22Vdc/R min =180Ohms V max =30Vdc/R min =150Ohms British Approvals Service for Electrical Equipment in Flammable atmospheres (BASEEFA) Approvals I1 BASEEFA/CENELEC Intrinsic Safety (Ex 97D2276X). EEx ia IIC T5 (T amb = 55 to 40 C) EEx ia IIC T4 (T amb = 55 to 70 C) BASEEFA I1 Connection Parameters BASEEFA I1 Connection Parameters V max:in =30Vdc I max:in =200mA W max:in =0.9W C eq = 0.012mF N1 BASEEFA Type N Certification (Ex 97Y4277X) Ex N IIC T5 (T amb = 40 to 70 C) BASEEFA Special Conditions for Safe Use with Transient Terminal Block (T1) When the optional transient protection terminal block is installed, the apparatus is not capable of withstanding a 500 V r.m.s. test to case. This must be taken into account on any installation in which it is used, for example, by assuring that the supply to the apparatus is galvanically isolated. KEMA/CENELEC Explosionproof ED Certification (97ATEX2378) EEx d.iic T4 (T amb = 80 C) EEx d.iic T6 (T amb = 40 C) Physical Specifications Electrical Connection 1 /2 14 NPT, PG 13.5, or M (CM20) conduit entry. Process Wetted Parts Isolating Diaphragm 316L stainless steel. Process Connector 316L stainless steel. Non-wetted Parts Electronics Housing Low-copper aluminum, NEMA 4X, IP65, CSA enclosure Type 4X. Paint Polyurethane. Cover O-rings Buna-N. Fill Fluid Neobee M-20. Weight Approximately 2.74 lb (1.24 kg). Approved Groups A, B, C, D A, B, C, D A, B, C, D A, B, C, D C, D Pressure-217

6 Sanitary Pressure Transmitter 5.0 (125) 4.3 (110) Optional Meter 3.9 (100) Certification Tag Terminal Connections Side Transmitter Circuitry Side 4.7 (120) * M Female (M20) and PG 13.5 also available as options NOTE Dimensions are in inches (millimeters) /4 20 UNC 2BX Depth 0.60 Mounting Holes 1 1 /2 or 2-in. Tri-Clamp Connection FIGURE 5. Smart Dimensional Drawing A07F, 2088B07F Pressure-218

7 Rosemount Inc. MODEL 2090F ORDERING INFORMATION Model Product Description (Select One) 2090FA 2090FG Sanitary Absolute Pressure Transmitter Sanitary Gage Pressure Transmitter Range psi (0 2 bar) psi ( bar) psi ( bar) Range Minimum Span URL/Max. Span Sensor Limit psi (103 mbar) 30 psi (2.06 bar) psi (517 mbar) 150 psi (10.34 bar) 3 40 psi (2.76 bar) 300 psi (20.68 bar) Output S (1) 4 20 ma dc/digital HART Protocol MATERIALS OF CONSTRUCTION Process Connection Isolating Diaphragm Oil Fill 2D 316 SST 316 SST Neobee E F M5 M7 E5 ED I5 K5 I1 N1 C6 T1 Q4 C4 Process Connection 1 1 /2 in. Tri-Clamp Connection 2 in. Tri-Clamp Connection Conduit Thread 1 /2 14 NPT M (CM 20) PG 13.5 G 1 /2 Female (PF 1 /2 Female) Options LCD Meter, scaled 0 100% LCD Meter, special configuration Factory Mutual (FM) Explosion-Proof Approval KEMA (CENELEC) Flame-Proof Approval Factory Mutual (FM) Non-Incendive and Intrinsic Safety Approval (Entity Concept) Factory Mutual (FM) Explosion-Proof and Intrinsic Safety Approval (E5 and I5 Combination) BASEEFA Intrinsic Safety Certification BASEEFA Type N Certification Canadian Standards Association (CSA) Explosion-Proof, Intrinsic Safety, and Non-Incendive Approval Transient Terminal Block Protection Calibration Data Sheet NAMUR Compliant Alarm Levels Typical Model Number: 2090FG 2 S 2D E 1 (1) Hazardous Locations Certifications pending for Model 2088 Smart. NOTE One product manual is included per shipment. Calibration Transmitters are factory calibrated to customer's specified range. If calibration is not specified, transmitters are calibrated at maximum range. Calibration is at ambient temperature and pressure. Tagging The transmitter will be tagged, at no charge, in accordance with customer requirements. All tags are stainless steel. The standard tag is wired to the transmitter. Tag character height is 1 /8 inch (0.318 cm). A permanently attached tag is available upon request. Pressure-219

8 PRINTED Sanitary Pressure Transmitter Rosemount and the Rosemount logotype are registered trademarks of Rosemount Inc. Neobee is a registered trademark of Stepan Chemical Co. Tri-Clamp is a registered trademark of Tri-Clover Inc. of the Alfa-Laval Group. The 3-A symbol is a registered trademark of the 3-A Sanitary Standards Symbols Council. Cover Photo: AB Rosemount Inc. Rosemount Inc Market Boulevard Chanhassen, MN USA Tel Telex Fax (612) IN 1998 Rosemount Inc. U.S. A. Fisher-Rosemount Limited Heath Place Bognor Regis West Sussex PO22 9SH England Tel 44 (1243) Fax 44 (1243) ; Fisher-Rosemount Singapore Pte Ltd. 1 Pandan Crescent Singapore Tel (65) Fax (65) Tlx RS FRSPL Pressure Rev. AB 11/98