RUSKIN AMP001 Air Measuring Probe Kit with Pressure Transducer Instruction Manual
- June 9, 2024
- RUSKIN
Table of Contents
RUSKIN AMP001 Air Measuring Probe Kit with Pressure Transducer
PRIMARY APPLICATION
The AMP Series probe kit is a differential pressure air measuring device that is designed to measure flow in filtered duct applications. It is intended for retrofit projects and may be installed in straight duct or in proximity to an elbow. The probes are tested in both applications and are licensed to bear the AMCA Certified ratings seal. The standard kit comes with a pressure transducer for measuring flows between 400 and 2,000 feet per minute. Optional field adjustable transducers (models AMS8100, AMS8100-LR, DPT-IQ) are also available. The AMS8100 and AMS8100-LR transducers, if included, allow field selection from six pressure ranges and five output options (0-10VDC, 2-10VDC, 0-5VDC, 1-5VDC, 4-20mA). It also features an LCD screen that displays actual differential pressure.
KEY FEATURES
- AMCA Certified Ratings
- Anodized Aluminum sensing probes
- Brass Barbed fittings
- Plenum Rated tubing
- RU-274-R2-VDC Transducer (standard)
CONSTRUCTION DETAILS
Refer to Ruskin AMP Series Measuring Probe Kit catalog specification sheet (Spec AMP001)
INSTALLATION
- Remove contents from package and check to insure all parts are included.
- a. AMP001 Contents
- One extruded air measuring probe with brass fittings
- One Pressure Transducer
- Parts bag containing installation instructions, [2] 15” pressure tubes and [4] installation screws
- b. AMP002 Contents
- Two extruded air measuring probes with brass fittings
- One Pressure Transducer
- Parts bag containing installation instructions, [4] 15” pressure tubes and [6] installation screws
- c. AMP003 Contents
- Three extruded air measuring probes with brass fittings
- One Pressure Transducer
- Parts bag containing installation instructions, [6] 15” pressure tubes and [8] installation screws
- Punch or cut 1 1/8” (28) diameter insertion hole(s) in the duct for each probe.
- On the opposite side of the insertion hole, drill 1/4” (6) hole(s). Hole(s) should be 1/2” (13) above the centerline of the insertion hole(s). A 1/4” (6) hole should be drilled opposite each insertion hole, one 1/4” (6) hole per insertion hole.
- Apply silicone caulk (by others) around each 1 1/8” (28) hole.
- Next, insert the small end of the probe into the 1 1/8”(28) insertion hole. The tab on the small end of the probe should extend through the 1/4” (6) hole on the opposite side of the duct. After making sure the probe is installed correctly (reference the airflow arrow) bend the tab over using a hammer. Fill the 1/4” (6) hole with silicone or aluminum tape. This step should be done for each of the probes.
- Using the self-drilling mounting screws from the parts bag, secure each sensor mounting plate to the duct.
- Use the two remaining screws to secure the pressure transducer in place.
- Using the black tubing, connect all high pressure brass fittings and all low pressure brass fittings. The tubing should terminate at the high and low pressure fittings of the pressure transducer.
- Bring 24 volt power supply to the transducer. Wire in accordance with the appropriate transducer installation instructions.
- Once power is brought to the transducer and the fans are operational, use the calculations below to determine flow.
All transducers ship with a factory set range of 0-1” W.C. and an output signal set to 0-10 VDC. The output signal may be field changed to 0-5 VDC with a jumper setting on the standard transducer (model RU274R2VDC). It can not be changed from a voltage output to a milliamp output. The optional model AMS8100 or AMS8100-LR allows more flexibility. By changing dip switch settings, you can field select from six different pressure ranges and five output options. Refer to the transducer catalog data sheets for further information.
CALCULATIONS
The following K factors may be used in any of the formulas below.
- Single Probe Applications: K=3493
- Two Probe Applications: K=2850
- Three Probe Applications: K=2940
FORMULAS FOR RU-274-R2-VDC TRANSDUCERS
The following equations can be used to calculate the velocity from each of the
pressure transducer output signals (output scaled .01 – 1” w.c.):
- 0-10 VDC: CFM = (Area x K) x (VDC x .1)M
- 0-5 VDC: CFM = (Area x K) x (VDC x .2)M
- 4-20 mA: CFM = (Area x K) x (mA x .0625 -.25)M
FORMULAS FOR AMS8100 or AMS8100-LR TRANSDUCERS
To calculate CFM using the LCD display of the AMS8100 or AMS8100-LR pressure
transducers, read the differential pressure (DP) from the LCD display and
enter the DP into the following equation:
CFM = (K x Area) DPM
Where
-
K = Proprietary constant value based on test data Area = Duct width times duct height over 144
DP = Differential Pressure -
M = Proprietary power based on test data Or
The following equations can be used to calculate the velocity from each of the pressure transducer output signals (output scaled .01 – 1” w.c.):
- 0-10 VDC: CFM = (Area x K) x (VDC x .1)M
- 0-5 VDC: CFM = (Area x K) x (VDC x .2)M
- 4-20 mA: CFM = (Area x K) x (mA x .0625 -.25)M
RECOMMENDED PLACEMENT – AIRFLOW MEASURING PROBE(S)
1D EQUIVALENT CHART
To determine the placement of an air measuring probe that is located down stream of a 90° vaned elbow (as shown in the detail E1 above); follow the duct width down to the duct height. The number at this intersection represents distance in inches (1D).
- Example 1 The 1D Equivalent of a 20” x 10” duct = 16”
- Example 2 The same 20” x 10” duct installed as shown in detail E3 would be 16” x 5 (5D)
Notes
- All numbers are expressed in inches.
- 2D = 1D x 2, 3D = 1D x 3, etc.
INSTALLATION DETAILS – MOUNTING HOLE LOCATIONS
ORDERING INFORMATION
Model Description
- AMP001 Single Probe Kit
- AMP002 Two Probe Kit
- AMP003 Three Probe Kit
Ordering Instructions
- Specify quantity, model, Transducer option and “A” duct/probe width*
- Refer to Installation Details for probe placement
AMP001 Probe Kit Contents
Step Sensor Probe 2 Brass “T” Fittings (factory installed) 2 Rubber Brass
Fitting Caps 12” Long High & Low Pressure Tubing RU-274-R2-VDC Pressure
Transducer Installation Instructions
AMP002 Probe Kit Contents
2 Step Sensor Probes 4 Brass “T” Fittings (factory installed) 2 Rubber
Brass Fitting Caps 2 12” Long High & Low Pressure Tubing 2 15” Long
Interconnecting Tubing RU-274-R2-VDC Pressure Transducer Installation
Instructions
AMP003 Probe Kit Contents
3 Step Sensor Probes 6 Brass “T” Fittings (factory installed) 2 Rubber Brass
Fitting Caps 2 12” Long High & Low Pressure Tubing 4 15” Long Interconnecting
Tubing RU-274-R2-VDC Pressure Transducer Installation Instructions
INFO: LINKS TO IMPORTANT DOCUMENTS
Document Title: Spec Sheet
- ADDRESS: 3900 Doctor Greaves Road Grandview, MO 64030
- Website: www.ruskin.com
- Phone: 816-761-7476