Ruskin AMS Series Owner's manual

II-AMS8100-0123/Replaces II-AMS8100-619 ALL STATED SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE OR OBLIGATION. © Ruskin January 2023
Page 1
3.63in
(92.1mm)
1/2”
Conduit
Fitting
AUTHORITY IN AIR CONTROL
Ruskin’s AMS series are the most versatile pressure transducers on the market with
selectable pressure ranges and selectable voltage or current output to satisfy the most
demanding air measurement applications. Switch selectable fast or slow response
time provides the ability to smooth out velocity pressure measurements that are the
result of less than ideal installation locations and turbulent air flows.
The LCD display shows the actual velocity pressure independent of the output pressure
range selected. This makes it extremely easy for the installing technician to know what
pressure range to use for each application. With the maximum air flow passing through
the air measurement station just look at the displayed value and select the lowest
range that includes the pressure. It’s that easy! By selecting the correct pressure
range, the electrical output can be scaled for the greatest measurement resolution and
corresponding air flow control.
At a glance troubleshooting can save hours of work. The three LEDS on the face of
the AMS series low-pressure transducer, above the display, indicate when the velocity
pressure being measured is “Out of Range Low” (or negative), “Out of Range High” or
operating as expected when the “In Range” LED is illuminated.
Do not have power applied to unit when changing settings. After changing settings, apply power and Auto-Zero the unit in its orientation of operation.
Field Selectable Pressure Ranges
(inches water column)
AMS8100LR:
0-0.10”, 0-0.25”, 0-0.50”, 0-0.75”, 0-1.00”.
AMS8100:
0-0.10”, 0-0.25”, 0-0.50”, 0-0.75”, 0-1.00”, 0-2.50”
Model AMS8100LR Model AMS8100
APPLICATION
SWITCH SETUP - OUTPUTS, RANGES, UNITS/RESPONSE
AMS8100/AMS8100LR
Installation and Operation Instructions
AMS Series Transducers
Figure 1
Figure 2: Setup Switches for AMS8100LR & AMS8100
AMS Series Transducer with Display
PRODUCT IDENTIFICATION
Model AMS8100LR
Model AMS8100
1. Select desired OUTPUT range (O1 through O5)
2. Select desired PRESSURE range (R1 through R6)
3. Choose UNITS/RESPONSE options:
1. Direction – this is a plus/minus range, so choosing the 0.75”/175PA range (R4) equates to -0.75”/-175PA to +0.75”/+175PA Bi-directional
and 0” to +0.75” Unidirectional.
2. Choose UNITS - WC or Pascals
3. Response Time – Fast Response = ½ second; Slow Response = 4 seconds
4. Mount, Terminate, and Auto-Zero the unit as described in the following sections. Attach the deadhead tubing to the ports during Auto-Zeroing

II-AMS8100-0123/Replaces II-AMS8100-619 ALL STATED SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE OR OBLIGATION. © Ruskin January 2023
Page 2
A locking screw can be
inserted into the hole
in the cover latch to
prevent unintentional
cover openings.
3.07in (78.1mm)
1.54in (39mm)
1.88in
(47.8mm)
3.76in
(95.5mm)
Ø7/8”
Figure 3: Transducer Mounting
Figure 6: Mounting Hole Template - shown actual size
(Ruskin recommends creating 5/32” pilot holes for the #10x3/4” self-tapping mounting screws)
Figure 4: Transducer Mounting Figure 5: Cover Latch Screw
Figure 7: Transducer Wiring Terminals
Attach the unit to its mounting surface with four self-tapping #10x3/4” sheet metal screws through the holes in the mounting feet. The preferred
mounting orientation is with the pressure ports facing down. Remove the deadhead tubing and push the system tubing onto the port nipple without
creating any kinks or holes.
Ruskin recommends wiring the product with power disconnected. Proper
supply voltage, polarity and wiring connections are important to a successful
installation. Not observing these recommendations may damage the product
and void the warranty.
To ensure that all wires are properly terminated, twist the stripped ends of each wire together
before inserting into the terminals. Gently tug on the wire after inserting into the terminal to verify
a good connection.
MOUNTING
OUTPUT TERMINATION
PWR
Terminal
GND/4-20
Terminal
Vout
Terminal
STOP
Table 1: Transducer Termination
Output Signal PWR Terminal GND/4-20 Terminal Vout Terminal
0 to 5 or
1 to 5 VDC
7 to 40 VDC or
18 to 32 VAC To Controller Ground VDC Signal to Controller Analog Input
0 to 10 or
2 to 10 VDC
13 to 40 VDC or
18 to 32 VAC To Controller Ground VDC Signal to Controller Analog Input
4 to 20 mA 7 to 40 VDC 4 to 20 mA Signal to
Controller Analog Input Not Used

II-AMS8100-0123/Replaces II-AMS8100-619 ALL STATED SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE OR OBLIGATION. © Ruskin January 2023
Page 3
Auto-Zeroing must be done after the initial setup and after any settings are changed.
1. Make sure power is applied
2. Deadhead ports
3. Press the Auto-Zero button for 2 seconds (LED blinks)
4. Remove deadhead tube after LED stops blinking
5. Attach system tubing to corresponding high and low pressure ports
NOTE: Velocity Pressure = Total Pressure - Static Pressure
LED Off: No power is applied or the unit is in 4 to 20 mA Mode.
LED On: LED is on when power is applied and voltage output is selected . When 4 to 20
maA output is selected, the light is on for 2 seconds at power up then goes off.
LED Blinking Fast: Auto-Zero or Error Mode.
LED Blinking Slow: The pressure measurement is above or below the selected pressure
range. NOTE: When the reading is above or below the selected pressure range, the LCD on
the face of the unit will alternate between showing the actual reading and showing “err”.
NOTE: Best practice is to form a drip loop in the tubing to prevent condensation from reaching the transducer.
AUTO-ZERO OPERATION
STATUS LED OPERATION
TYPICAL APPLICATIONS
Figure 8: Auto-Zero Button
Model AMS8100LR
Figure 9: Status LED on the inside of the cover
Figure 11: Air filter Pressure Drop Monitoring
(Pressure Sensor mounted on the duct with a
Static Pressure Probe on either side of the filter in a duct.)
Figure 10: Duct Static Pressure Monitoring
(Pressure Sensor mounted on the duct with a
Static Pressure Probe in the duct.)
Model AMS8100LR

II-AMS8100-0123/Replaces II-AMS8100-619 ALL STATED SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE OR OBLIGATION. © Ruskin January 2023
Page 4
3900 Doctor Greaves Road
Grandview, MO 64030
Website: www.ruskin.com
Phone: [phone]
AUTHORITY IN AIR CONTROL
LINKS TO IMPORTANT DOCUMENTS
Document Title
Limited Warranty Document
TROUBLESHOOTING
Possible Problems Possible Solutions
LED does not light. Check power connections for proper power.
LED is blinking fast (1/2 second on, 1/2 second off). The unit may be performing an auto-zero. Wait 10 seconds and check again.
Sensor is in an Error Mode. Cycle power.
Display is alternating between a number and “err”. The measurement is out of selected range.
Output stuck (high or low). Remove pressure from ports and perform auto-zero procedure.
Output not tracking pressure properly. Check rotary switch for proper pressure range selection.
Check rotary switch for proper output range selection.
Power:
7 to 40 VDC or 18 to 32 VAC for 0 to 5 or 1 to 5 V Output
13 to 40 VDC or 18 to 32 VAC for 0 to 10 or 2 to 10 V Output
7 to 40 VDC for 4 to 20 mA Output
Port Size: 1/4” tubing (1/8” to 3/16” I.D.)
SPECIFICATIONS
3.63in
(92.3mm)
1/2”
Conduit
Fitting
2.22in
(56.5mm)
4.51in
(114.7mm)