INSTALLATION & OPERATION MANUAL AN25 Totalizer/ Rate Indicator DOC#: MN-AN25.
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator pg. 2 SPECIFICATIONS Temperature: Operating 0 to 70°C Storage -20 to 85°C Input Voltage: 110VAC or 12-16.5VDC 100mA MAX Observe Polarity Signal Input: Frequency 0-10KHz Amplitude 50mV – 35V sine or square wave Sensitivity field adjustable Impedance 10K Display: LCD, 8 Digit .
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator pg. 3 DOC#: MN-AN25 INTRODUCTION General The Model AN25 Totalizer and Rate Indicator is comprised of compact, convenient and precision electronics designed to interface with any frequency generating device such as a turbine flowmeter. The Model AN25 provides flow totalization and rate in any engineering unit. Total and rate are displayed simultaneously via two 8 digit liquid crystal displays.
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator pg. 4 DOC#: MN-AN25 INSTALLATION Inspection All units are completely assembled, inspected and tested at the factory prior to shipment. Upon receipt of the unit, a visual inspection should be conducted to detect any damage that may have occurred during shipment. Report any discrepancy to the factory immediately. Physical All Model AN25 units are enclosed in a ¼ DIN, molded plastic housing.
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator pg.
Sponsler Co., Inc. pg. 6 AN25 Totalizer/Rate Indicator DOC#: MN-AN25 CALIBRATION Sensitivity The sensitivity adjust R6 is located on the Power Supply and Input Amplifier P.C.B. The amplitude of the signal generated by the turbine is proportional to the rate of flow, therefore, sensitivity should be adjusted at the lowest usable flow rate. Rotate R6 completely counter-clockwise, then slowly rotate R6 clockwise until the display correctly responds, then increase R6 slightly clockwise.
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator pg. 7 DOC#: MN-AN25 Calibration ‘0-1’ Function The ‘0-1’ function provides enhanced accuracy when totalization encompasses a large quantity for an extended period of time such as SCF produced in a 24 hour period. The ‘0-1’ function should be incorporated only when both conditions listed below are met: 1) C.F.’s 1st digit right of decimal is 1 2) C.F.’s 5th digit right of decimal is not 0 Example #3 Assume a turbine has a K-Factor of 79.
Sponsler Co., Inc. Example #5: AN25 Totalizer/Rate Indicator pg. 8 DOC#: MN-AN25 The Engineering Unit is pounds in 10ths CO2 K-Factor = 250 pulses per gallon Pounds of CO2 = 8.470 per gallon In order to establish 10ths, increase lbs./gal. by a factor of 10 C.F. = 84.7/250 C.F. = .3388 On the Factoring P.C.B.: Set S6 #1 ‘ON’ (↓ Position) ÷ 1 does not move decimal point Set S2@3, S3@3, S4@8, S5@8 Set S1 in ‘0’ Position If the gallons per unit volume such as 7.
Sponsler Co., Inc. Example #8: AN25 Totalizer/Rate Indicator pg. 9 DOC#: MN-AN25 Actual = 50 Displayed = 52 C.F. = .4000 New C.F. = 50/52 x .4000 = .9615 x .4000 = .3846 On the factoring P.C.B.: Set S2@3, S3@8, S4@4, S5@6 In the above example, .96 denotes that the meter is operating 4% fast. Multiplying by the present C.F. (.4000) by the Displayed:Actual Ratio (.96) effectively reduces the error by decreasing the C.F. by 4%. Example #9: Actual = 52 Displayed = 50 C.F. = .4000 New C.F. = 52/50 x .
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator pg.
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator pg.
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator pg. 12 DOC#: MN-AN25 Calibration of Analog Outputs REQUIRED EQUIPMENT: Power Supply 110 VAC or 12-16.5 VDC 2 Digital Multimeters (DMM) Frequency Generator Frequency Counter NOTE: All test equipment power cords should be equipped with 2 prong “cheater” plugs. a) Connect power supply Positive (HOT) & Negative (NEU) leads to TB1-1,2 respectively. b) Connect #1 DMM Positive lead TB1-4.
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator pg.
Sponsler Co., Inc. AN25: ¼” DIN Dimensional Information AN25 Totalizer/Rate Indicator pg.
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator pg.
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