Ruskin AMS810 User manual

www.ruskin.com • 3900 Dr. Greaves Rd. • ansas City, MO 64030 • [phone]
INSTALLATION AND OPERATION INSTRUCTIONS
MODEL AMS810 TRANSDUCER
MOUNTING
ALL STATED SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE OR OBLIGATION. © Ruskin September 2018II-AMS810-918/Replaces II-AMS810/914
AMS810 Display Unit OpenAMS810 with Display
Mounting Hole Pattern Mounting Screws Location
Mount the unit to its mounting surface with four #10 screws through the holes in the mounting feet. The preferred mounting orientation is with the
pressure ports facing down.
TOOLS & MATERIAL LIST
SCREWDRIVER #10 SCREWS SEALANT FILLED CONNECTORS
DRILL WITH 5/32” BIT WIRE
PRODUCT IDENTIFICATION

To adjust the output range, set dip switches 5 & 6 to the desired output
range using the label found inside the cover of the unit.
Note: If any of the switches are placed in an undefined combination
the LED will fast blink and the output will be forced to 4mA or zero
volts.
OUTPUT RANGE SELECT
To adjust the pressure range, set dip switches 1-4 to the desired pres-
sure range using the label found inside the cover of the unit.
Note: If any of the switches are placed in an undefined combination the
LED will fast blink and the output will be forced to 4mA or zero volts.
PRESSURE RANGE SELECT
OUTPUT TERMINATION
Desired Output ire connections
4 to 20 mA Red (V+); Black (Return [4 to 20 mA Signal]), White (Not used)
0 to 5 V or 0 to 10 V Red (V+); Black (Ground); White (Output Voltage)
4 to 20 mA is “two wire” operation, the red wire connects to a posi-
tive direct current voltage of 7 to 45 VDC, the black wire becomes
the return of the 4 to 20 mA signal and the white wire, while
unused, must be insulated from accidental contact with ground or
any other potential. For 4 to 20 mA signaling only direct current
can be used to power the AMS810.
0 to 5 V or 0 to 10 V is “three wire” operation, the red wire connects
to either 7 to 45 VDC or 7 to 32 VAC (0-5 VDC output) or 13 to 45
VDC or 13 to 32 VAC (0-10 VDC output), the black wire is connect-
ed to ground and the white wire is connected to an analog input of
the controller. Ruskin insulates the white wire in the factory before
shipping to you, please remove the connector and strip the insula-
tion from the white wire for 0-5V or 0-10V operation.
To ensure that all wires are properly terminated, twist the stripped
ends of each circuit together before inserting into the splice termi-
nals. Gently tug on the wire after terminating to make sure of a
good connection. If the wire comes out of the termination repeat
the splice procedure.
DIP S ITCH SETTINGS - INCHES, PASCALS
DIP Switch Settings, Inches .C. DIP Switch Settings, Pascals
DIP Switch settings for optional, 1-1.0 inch W.C. model DIP Switch settings for optional, 0-250 PA model

AUTO-ZERO SELECT
To auto zero the AMS810 remove the tubing from the pressure
ports (to remove the normal pressure source). Make sure that the
pressure ports are sheltered from any drafts, including the techni-
cian’s breath. Ideally the two ports should be connected together
with a short piece of tubing. Turning on switch 7 starts the auto-
zero process. Switches 1 through 6 may be in any allowed configu-
ration. The LED will blink at a fast rate and the output will be forced
to zero (4mA or 0V) while the auto-zero is being performed. When
the LED blinks at a slow rate, turn off switch 7 and reconnect the
pressure source.
S ITCH 8
Switch 8 is reserved for factory use, leave in the off posiiton.
TROUBLESHOOTING
PROBLEMS: POSSIBLE SOLUTIONS:
LED does not light - Check power connections for proper power
LED is blinking fast - The unit may be performing an auto-zero. Wait 10 seconds and check again.
(1/2second on, 1/2second off) - The dip switches are in an unsupported configuration, check the dip switch settings, both pressure
and output, and change them to ranges desired
Output stuck (high or low) - Remove pressure from ports and perform auto-zero procedure
Output not tracking pressure properly - Check dip switches for proper pressure range selection
- Check dip switches for proper output range selection
LED OPERATION
LED off No Power
LED Blinking 1/2sec on, 1/2sec off Auto-zero or dip switch in undefined configuration
LED on Normal operation
LED Blinking 1/2sec on, 4 sec off Auto-zero complete
Auto-Zero

3900 Dr. Greaves Rd.
ansas City, MO 64030
[phone]
FAX [phone]
www.ruskin.com
The AMS810 is factory configured for 0-1” W.G. with an output sig-
nal of 0-10 VDC. Each Air Measurement Station is shipped with a
PAMS chart (Pressure Across Measurement Station) indicating the
output signal proportional to CFM. Adjusting the dip switch to a dif-
ferent pressure range or analog output signal varies the formulas
used to calculate CFM.
In order to convert the analog output signal from the pressure trans-
ducer to differential pressure use the multiplier in Table 1 for the com-
bination selected. Then use the “Area x a” and “1/m” values from the
PAMS chart to calculate CFM with the following formula:
PAMS = Scale Formula x VDC
CFM = (Area x Ka) x (PAMS) (1/m)
.10” W.G. .25” W.G. .5” W.G. .75” W.G. 1.0” W.G. 2.5” W.G.
0-10 VDC .01x(VDC) .025x(VDC) .05x(VDC) .075x(VDC) 0.1x(VDC) .25x(VDC)
0-5 VDC .02x(VDC) .05x(VDC) .1x(VDC) .15x(VDC) .2x(VDC) .5x(VDC)
4-20 mA .0063x(mA) - .025 .0156x(mA) - .0625 .0312x(mA) - .125 .0468(mA) - .1875 .0625x(mA) - .25 .1563x(mA) - .625
Table 1: Scale Formulas
SCALE FORMULAS
SOLD TO: RUSKIN CUSTOMER
CONTROL NO: 123456
TAG: AHU-1
MODEL: AMS050
Ka 3200
Damper Width 17 3/4 1/m 0.5
Damper Height 17 3/4 Area x Ka = 6127.3
Number Probes 4Area = 1.9147813
Damper Sections 1
PAMS* CFM
0.005 433
0.01 613
0.02 867
0.03 1,061
0.04 1,225
0.05 1,370
0.06 1,501
0.07 1,621
0.08 1,733
0.09 1,838
0.1 1,938
0.11 2,032
0.12 2,123
0.13 2,209
0.14 2,293
0.15 2,373
0.2 2,740
0.3 3,356
0.4 3,875
0.5 4,333
0.6 4,746
0.7 5,126
0.8 5,480
0.9 5,813
16,127
*PAMS = Pressure Across Measuring Station
0.05 198
3,200
1,431
1,753
2,024
2,479
3,036
2,263
1,154
1,197
2,677
2,862
1,239
640
716
1,012
1,109
784
847
905
960
1,061
10.00
6.00
7.00
8.00
9.00
2.00
3.00
4.00
5.00
1.20
1.30
1.40
1.50
0.80
0.90
1.00
1.10
0.40
0.50
0.60
0.70
3200.10
0.20
0.30
453
554
CFM = (AREA * Ka) * PAMS(1/m)
Actual Damper Size (inches)
VOLTS FPM
Pressure Range
Voltage Range
NOTE: CFM corrected to 70°F. & 1000 FT elevation for other
elevations add 2% per 1000 ft. increase and 1% per 10°F
increase in temp.