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Series A1 & A2 Installation and Operation Manual Bulletin 101-0 Series A1 / A2 – Installation and Operation Manual The series A1 and A2 are microprocessor based digital pressure gauges for positive, negative, and differential measurement designed to be a direct replacement for mechanical gauges. The ½” LCD display gives the gauge improved readability and precision. These products also feature 5 user selectable engineering units including in. w.c., mm w.c., cm w.c., kPa, and Pa. The A2 series adds a “process arch” which gives the gauge a similar look to mechanical gauges by giving a continuous percent output status. Example A2100-03 Description Model A Round Panel Mount Housing 1 LED display Display 2 LED display & arch Control 0 N/A 0 None Transmitter 1 4-20 mA 0 1% Accuracy 1 0.50% - 01 0 – 0.50” - 02 0 – 1” - 03 0 – 2” - 04 0 – 3” - 05 0 – 4” - 06 0 – 5” - 07 0 – 8” - 08 0 – 10” - 09 0 – 15” - 10 0 – 20” Range - 11 0 – 30” Maximum Pressure: Ranges ≤ 4” w.c. = 2 PSI; Ranges ≥ 5” w.c. = 10 PSI Media compatibility: Air and compatible non combustible, non corrosive gasses Accuracy*: Axxx0-xx - 1.00%; Axxx1-xx - 0.50% Temperature Ranges: Compensated: -10° to 140°F (-23° to 60°C) Operating: -10° to 140°F (-23° to 60°C) Thermal Effect*: +/- 0.012% FS/°F Output Signal: 4-20 mA (option) Loop Resistance: 750 Ω Max (for internally sourced power); 1800 Ω Max (for externally sourced power of 36 VDC) Power Supply: Universal 16-265 VAC or VDC Housing Material: Glass Filled Nylon Enclosure Rating: Designed to meet NEMA 4X face; with optional cover entire product is weatherproof Electrical Connections: screw terminals Response Time: <100 ms Display: 4 Digit, red LED, ½” digits Process Connection: Push on connection for 3 /16 ” tubing Agency Approvals: Pending – UL, C-UL, CE Patents Pending * Custom calibration including improved accuracy and improved thermal effect are available. Flush Mounting – For new applications, cut a 4 9 /16 ” hole in the panel. Insert the control with the provided gasket through the hole and secure it to the panel with the provided mounting tabs and screws. Retrofitting old technology is also easy with the Series A1 and A2. They have been designed to fit in industry standard holes ranging from 4 9 /16 ” to 4 13 /16 ” so simply remove the old device and insert the new control into the existing cut out. Surface Mounting – Surface mounting the Series A1 or A2 requires the optional weather proof cover. Once the control is wired and the weather proof cover has been attached, the control can be mounted to any flat surface with the four mounting screws provided with the cover. Flush Mounting with Weather Proof cover – The Series A1 and A2 can also be flush mounted with a weather proof cover. The procedure is the same as above, but utilizes two extra long mounting screws (provided with the weather proof cover) for the bottom two panel connections. Flush Mounting Surface Mounting Flush Mounting with Weatherproof Cover 1. INTRODUCTION 2. INSTALLATION 1.1 Model Number Configuration 1.3 Dimensional Drawings 1.2 Specifications 2.1 Mounting