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O & M Manual B12-71 2-Wire Hydrogen Gas Transmitter Home Office European Office Analytical Technology, Inc. ATI (UK) Limited 6 Iron Bridge Drive Unit 1 & 2 Gatehead Business Park Collegeville, PA 19426 Delph New Road, Delph Phone: 800-959-0299 Saddleworth OL3 5DE...
Model B12-71 Wet Hydrogen Gas Transmitter TABLE OF CONTENTS TABLE OF CONTENTS ........................2 INTRODUCTION ..........................4 SPECIFICATIONS..........................8 INSTALLATION ..........................9 MECHANICAL MOUNTING ......................9 ELECTRICAL CONNECTION ......................12 HYDROGEN SENSOR ASSEMBLY....................14 OPERATION ..........................16 TRANSMITTER TEST POINTS ....................16 DIGITAL DISPLAY OPTION .......................
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Model B12-71 Wet Hydrogen Gas Transmitter TABLE OF FIGURES Figure 1 - Typical % Version Insertion System Insallation (ATI-0156) ..........4 Figure 2 - Typical PPM Remote Version Insertion System Installation (ATI-0165) ......5 Figure 3 - Typical PPM Standard Version Insertion System Installation (ATI-0166) ......6 Figure 4 - Typical Flow Through System Installation (ATI-0223) ............
Model B12-71 Wet Hydrogen Gas Transmitter INTRODUCTION The Series B12-71 is a two-wire transmitter designed to work with ATI's Model 71 Wet Hydrogen Gas Sensor. It provide a low power method of monitoring hydrogen in moisture saturated gas streams. CODE NO.
Model B12-71 Wet Hydrogen Gas Transmitter Figure 2 - Typical PPM Remote Version Insertion System Installation (ATI-0165) O & M Manual - 5 - Rev-D, 7/15...
Model B12-71 Wet Hydrogen Gas Transmitter Figure 3 - Typical PPM Standard Version Insertion System Installation (ATI-0166) O & M Manual - 6 - Rev-D, 7/15...
Model B12-71 Wet Hydrogen Gas Transmitter Figure 4 shows a typical flow through B12-71 gas monitoring system. The sensor is shown with the flowcell in place. If used in insertion applications, the flowcell must be removed. Figure 4 - Typical Flow Through System Installation (ATI-0223) O &...
Model B12-71 Wet Hydrogen Gas Transmitter INSTALLATION Installation of a B12 Transmitter requires mechanically mounting the enclosure and connecting DC power to the system. In addition, the flowcell assembly for the sensor must be connected to sample inlet and outlet tubing. Hose barbs are supplied on the flowcell, and the inlet and outlet ports are suitable for a variety of fitting with 1/8"...
Model B12-71 Wet Hydrogen Gas Transmitter Figure 6 - Nema-4X Enclosure Dim for Std. PPM Versions (ATI-0198) Explosion-proof transmitter enclosures should be supported by the conduit system and the installation should include proper conduit seals as required by local electrical code.
Model B12-71 Wet Hydrogen Gas Transmitter The back of the insertion sensor is a 1¼" MNPT pipe thread. The sensor is normally threaded into a blind flange which is used to mount to the vent. The sensor should be installed perpendicular to the air flow and should be inserted far enough into the vent so that the sensor tip is at least ½"...
Model B12-71 Wet Hydrogen Gas Transmitter ELECTRICAL CONNECTION B12-71 transmitters are supplied with a gland seal for the sensor wire and a ½" conduit hub for output loop connection. The sensor connects to a terminal block (TB2) on the transmitter circuit board.
Model B12-71 Wet Hydrogen Gas Transmitter NOTE: GREEN Conductor used on PPM Version of sensor ONLY. If using % sensor, wire using BLUE conductor. Figure 10 - Electrical Connections, Explosion-Proof Enclosure (ATI-0289) O & M Manual - 13 - Rev-D, 7/15...
Model B12-71 Wet Hydrogen Gas Transmitter HYDROGEN SENSOR ASSEMBLY The % hydrogen sensor supplied with the B12-71 is shipped dry. It will not operate until it is prepared by adding electrolyte and a membrane. Preparation of the sensor for operation must be done carefully.
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Model B12-71 Wet Hydrogen Gas Transmitter 6. Slowly screw the canister onto the sensor body. A small amount of electrolyte will run out of the hole from which the vent screw was removed. Place a paper towel around the sensor to absorb the electrolyte overflow.
Model B12-71 Wet Hydrogen Gas Transmitter OPERATION After mechanical and electrical installation is complete, the system is ready for operation. Prior to start-up, recheck the loop wiring and sensor connections to be sure everything is correct. Reversing the loop wiring will not damage the transmitter, but other devices in the loop may be adversely affected.
Model B12-71 Wet Hydrogen Gas Transmitter DIGITAL DISPLAY OPTION Series B12 transmitters supplied with the optional LCD have the display mounted to the enclosure cover with a clear lens protecting the display from dirt and moisture. The display is connected to the cover with a short ribbon cable soldered to the transmitter circuit board.
Model B12-71 Wet Hydrogen Gas Transmitter CALIBRATION Transmitter calibration requires adjustment of both zero and span. Zero is adjusted when the sensor is exposed to a gas stream containing no hydrogen. Adjusting the span requires that the sensor be placed in a gas stream containing a known hydrogen concentration.
Model B12-71 Wet Hydrogen Gas Transmitter MAINTENANCE The only maintenance required on the B12-71 system is periodic sensor service. The % hydrogen sensor uses a membrane that can loose sensitivity with the accumulation of solids or precipitates in the membrane. As a preventive measure, sensors should be rebuilt with new membrane and electrolyte about every 2-3 months.
Model B12-71 Wet Hydrogen Gas Transmitter SPARE PARTS LIST PART NO. DESCRIPTION 01-0067 B12-71 transmitter PCB (% Version) 01-0193 B12-71 Standard Transmitter PCB (PPM Version) 01-0194 B12-71 Remote Transmitter PCB (PPM Version) 81-0002 NEMA 4X enclosure (top and bottom) 03-0039...
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PRODUCT WARRANTY Analytical Technology, Inc. (Manufacturer) warrants to the Customer that if any part(s) of the Manufacturer's equipment proves to be defective in materials or workmanship within the earlier of 18 months of the date of shipment or 12 months of the date of start-up, such defective parts will be repaired or replaced free of charge.
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