Liquid Controls AN25 User Manual
INSTALLATION & O PERAT IO N
MANUAL
AN25
Totalizer / Rate I n d i cato r
DOC#: MN-AN25.doc
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator
pg.
2
Temperature:
Input Voltage:
110VAC or 12-16.5VDC 100mA MAX
Display:
LCD, 8 Digit .3” characters
Accuracy:
Totalizer + 1 Count
Enclosure:
Pan el moun t, ¼ DIN molded plastic
SPECIFICATIONS
Operating 0 to 70°C
Storage -20 to 85°C
Observe Polarity
Signal Input: Frequency 0-10KHz
Amplitude 50mV – 35V sine or square wave
Sensitivity field adjustable
Impedance 10K
Totalizer – 8 Digit
Rate I ndicator – 5 Digit
Leading zero blanking on rate function
Totalizer has bat tery backup
Totalizer r eset external l y initiat ed
Engineering units – Input factoring .00000001 – 1.9999
DOC#: MN-AN25
Rate I ndicator + 1%
Analog Outputs .3% F/S
Analog Output: 4mA @ 0Hz, 20mA @ desired full scale frequency
0V @ 0Hz, 5V or 10V @ desired full scale frequency
Full scale range 100Hz-10KHz
Response time 95% of change in 1 second
Linearity .3% F/S
Tempco < 2% of reading over entire temperature range
4-20mA Maximum load resistance 500 Ohms
Voltage Output minimum load resistance 250 Ohms
AN25-L: Loop powered by a 4-20mA loop input
Minimum voltage 6.5V + (.02 x RL)
Maximum Voltage 28V + (.004 x RL)
(Same temperature, Displ ay and accuracy specifications appl y)
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator
pg.
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DOC#: MN-AN25
INTRODUCTION
General
The Model AN25 Tot alizer and Rate Indicat or i s 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 displ ays. A backup battery is incorp or ated in the Totalize r displ ay circuitry to retain the total until Reset.
Reset i s accomplish ed externall y by a magnetic field.
Negatives previously associat ed with LCD’s – poor cold temper ature per formances, condensation which is a by
product of heaters and display ghosting – have all been erad i cated by incorpor ating a l ow t emperat ure coefficient
LCD (-35
In addition to totalization and rate in dication, the Model AN25 (Analog) provides an interface 4-20mA output and an
interface voltage output of 0-5V or 0-10V, selectable. The AN2 5 (Analog) lin ear ly converts a frequency to
equ i valent anal og outputs of 4-20mA and 0-5V or 0-10V. When incorporated wit h a turbine flowm eter, interface
outputs of 4-20mA and 0-5 V or 0-10V proportion al to flow are obtainable.
An input supply voltage of 110VAC or 12VDC is standard.
The Model AN25 -L is a Loop Powered Totalizer & Rate Indicator which accepts a 4-20mA Loop Powered Input.
Model AN25-L provides the same totali zation and rate i ndication as t he Model AN25.
Theory of Operation
Model AN25 amplifies and shapes the incoming pulses generated by the turbine's response to flow. The amplified
pu l se train is factored by a phase l ocked loop (PLL). The fact or ed pulse train is then scaled & divid ed to produce a
totalized display in the desired engineering unit. For rate, the divided pulse train is combined with a crystal
timebase for ab solute accuracy. This configurati on permits the calib r ation factor to be universal for both total and
rate indicat ion.
Model AN25-L Loop Powered Totalizer & Rate Indicator accepts a 4-20mA loop input. An analog to frequency
converter is incorporated in the circuitry to establish a calibrated 10KHz full scale frequency pulse. This pulse is
then scaled and divided by the same circuitry as the standard AN25 to provide totalization and rate indication in
engineering units.
Calibration
Field calibration for Totalization and Rate i s accomplish ed by inco r porating a calibration factor based on the turbine
K-Factor. Divider switches provide divisional increments of .00000001 – 1.9999. The calibration factor is entered
via 4 BCD switches, a divider switch, an d a ‘0-1’ switch.
Calibration of the analog control outputs is established by installation of a F/S frequency jumper in conjunction with
the zero and span adjustments. 0-5 or 0-10VDC output is selected by installation of a jumper. 4-20mA and 0-5/
0-10V calibrations are i ndependent of each other and i ndependent of the cal ibration factor en tered for total and r ate
indication.
o
C).
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator
pg.
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DOC#: MN-AN25
INSTALLATION
Inspection
All units are completely assembled , inspected and tested at the factory prior to shipment. U pon recei pt of the unit,
a visual inspection should be conducted to detect any damage that may have occurred during shipment. Report
any discrepancy to th e factory immediatel y.
Physical
All Model AN25 units are enclosed in a ¼ DIN, molded plastic housing. The housing has a snap on the front
Bezel, removable mounting clips, and a plug-in wiring terminal on the back.
Refer to dimensional requirements for dimensions, bezel size, and depth needed for mounting the instrument in a
user panel. Be sure to provide additional space for cabling and connections behind the instrument. Additionally,
all wirin g to the back of t he instrum ent sh ould have sufficien t service loops to allow for the easy removal of the
instrument from the panel.
Electrical
An input supply voltage of 110VAC or 12VDC is stand ar d for the Model AN25. Be sure to observe correct polarity
when making field terminations.
Model AN25-L requires a minimum loop voltage of 6.5V + (.02 x RL). Maximum voltage is 28V + (.004 x RL).
Signal
The standard signal cable is a 2 wire shielded cable with a MS3102 connector termination which is the industry
standard interface for 2 pole pickup coils. The shielding is singly ended and should not be altered.
Sponsler Co., Inc. AN25 Totalizer/Rate Indicator
pg.
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For 115VAC
For +12VDC
For 115VAC wit h A nalog Output
For +12VDC with A nalog Output
Field Terminations
MODEL AN25
MODEL AN25-L
DOC#: MN-AN25
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