A4
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Model A4 Intrinsically Safe and Non-Incendive Pressure Transmitter APPLICATIONS: Oil field equipment, upstream oil and gas production, natural gas compression and transfer control, alternative energy projects FEATURES: • FM and CSA listings • Choice of 0.25, 0.50 or 1.0% accuracy • Pressure ranges from 5 psi through 10,000 psi • CE mark • 316L SS wetted materials, 17-4 PH optional • 304 SS case in standard, welded or explosion proof construction • Optional absolute pressure ranges available • Zero and span access (Basic Enclosure) LOOK FOR THESE MARKS ON OUR PRODUCTS ENVIRONMENTAL SPECIFICATIONS Temperature Effects: –20 to +85°C (–4 to 185°F) • 1.0% of Span for .25% Accuracy Class • 2.0% of Span for .50% and 1.0% Accuracy Classes Humidity Effects: No performance effects from 0 to 95% relative humidity, non-condensing, 0-100% RH with “W” enclosure. *Consult factory The Ashcroft® A4 pressure transmitter is ideal for a broad spectrum of pressure sensing requirements where Intrinsically Safe or Non-Incendive hazardous location ratings are required. The Ashcroft® A4 is designed and manufactured to provide the user with accurate, reliable, and stable output data. This is accomplished through the use of an on board microprocessor, that is programmed during a unique digital compensation process, to provide extremely linear and precise performance over the entire specified pressure and temperature range. PERFORMANCE SPECIFICATIONS Reference temperature 70°F (21°C) Accuracy, Three Classes (% Span): ±.25 ±0.5 ±1.0 Includes non-linearity (Terminal Point Method), hysteresis, non-repeatability, zero offset and span setting errors Best Fit Straight Line* (BFSL): ±.20 ±.40 ±.50 Includes non-linearity hysteresis, non-repeatability errors *Add ±.05% for ranges above 5000 psi Stability: ͨ ±0.25% Span/year @ reference conditions Durability: Greater than 10 million cycles Temperature Limits: Storage: –40 to +125°C Process: –40 to +125°C Operating: –40 to +125°C Compensated*:–20 to +85°C *Consult factory for other options (–40 to 257°F) (–40 to 257°F) (–40 to 257°F) ( –4 to 185°F) FUNCTIONAL SPECIFICATIONS Respone Time: <2ms Pressure Ranges: Vacuum, gauge, compound and absolute pressure from 0-5 psi through 0-10,000. Equivalent ranges in bar available. See order guide section (reverse). Vibration Effect: Shock: 100g Peak, 11ms Random: 10g RMS, 20-2000Hz Sweep: 50-2000Hz, 5g peak Position Effect: ±0.02% Typical CE Mark (standard): EN 61326:1997 + A1: 1998 Annex A Heavy Industrial Immunity (Annex A, Table A.1) Light Industrial/Residential Emission (Table 4) Burst Overpressure (F.S.)*: Proof 0#/vac. to 300 psi 1.5 x F.S. min. 2 x F.S. 500-10,000 psi 1.2 x F.S. 1.5 x F.S. *For higher overpressure ratings use XK8 option. See page 2 for additional option. ELECTRICAL SPECIFICATIONS Output Signal: Supply Voltage: (unregulated) Maximum Minimum 4-20mA* (2 Wire) 12Vdc 30Vdc *For Intrinsically Safe see entity parameters for supply voltage and load limits. Refer to Ashcroft A4 Installation & Maintenance document “I&M011-10166-A4.” Power Requirements: See load chart page 2 Electrical Terminations: See To Order section (reverse.) for options Circuit Protection: Reverse polarity and mis-wire protected Insulation Resisance (Circuit to Case): 100Mohm @ 30Vdc PHYSICAL SPECIFICATIONS Case: Material 304SS Wetted Materials: 316L SS diaphragm and presure port, optional 17-4PH SS diaphragm and 316L SS pressure port (see How to Order Section). Ingress Protection Rating: Enclosure Code Rating Basic (S) IP65, NEMA 4X All Welded (w/o Z/S) (W) IP67, NEMA 6 HAZARDOUS AREA CERTIFICATIONS Intrinsically Safe – FM/CSA: Intrinsic Safety: Class I, II and III Div.1 and 2, Groups A, B, C, D, F and G per entity requirements see Ashcroft drawing # 825A022 Non-Incendive: Class I, II and III Div.2, Groups A, B, C, D, F and G, no barriers needed NOTE: Refer to Ashcroft Model A2 for Heavy Industrial, non-hazardous rated configurations and Ashcroft Model A2X for Explosion/Flame Proof applications. BULLETIN A4-1 All specifications are subject to change without notice. All sales subject to standard terms and conditions. © Ashcroft Inc. 2012 Rev. 07/12 Ashcroft Inc., 250 East Main Street, Stratford, CT 06614 USA Tel: 203-378-8281 • Fax: 203-385-0408 email: info@ashcroft.com • www.ashcroft.com

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Model A4 Intrinsically Safe and Non-Incendive Rated Pressure Transmitter DIMENSIONS dimensions in ( ) are mm .50˝ (13) .887˝ (22.5) 4.45˝ (113) 3.065˝ (78) 4.78˝ (121) 1.06˝ (27) DIA. .885˝ (22) 1.06˝ (27) Hex. Common For All Pressure Fittings 3.065˝ (78) 1.06˝ (27) DIA. .675˝ (17) VdcMIN = 12V + (0.022A* X (RL) ) RL = RS+ RW RL = Loop Resistance (ohms) RS = Sense Resistance (ohms) RW = Wiring Resistance (ohms) * (Includes a 10% safety factor) INTRINSICALLY SAFE (ENCLOSURE S, W) XK8 OVERPRESSURE (F.S.) 0 to 2000 psi 3000 to 5000 psi 7500 to 10,000 psi Proof 200% 150% 120% Burst 800% 300%...

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