VERIS PX3 Series Dry Differential Pressure Sensor Installation Guide
- June 8, 2024
- VERIS
Table of Contents
PX3 Series Dry Differential Pressure Sensor
Installation Guide
PX3 Series Dry Differential Pressure Sensor
NOTICE
- This product is not intended for life or safety applications.
- Do not install this product in hazardous or dassifed locations.
- Read and understand the instructions before installing this product.
- Turn of all power supplying equipment before working on it.
- The installer is responsible for conformance to all applicable codes.
If this product is used in a manner not specifed by the manufacturer, the
protection provided by the product may be impaired. No responsibility is
assumed by the manufacturer for any consequences arising out of the use of
this material.
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation. Changes or
modifications not expressly approved by the party
responsible for compliance could void the user’s authorityto operate the
equipment. This device complies with Industry Canada license-exempt RSS
standard(s). Operation is
subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including
interference that may cause undesired operation of the device.
Product Overview
The PX3 transducer can measure either air pressure or velocity with the flip
of a switch. The PX3 is available in three installation configurations: duct,
panel or universal. Duct and panel models have two pressure and velocity
options: 0-1 in. WC / 0-3,000 ft/min or 1-10 in. WC / 3,000-6,000 ft/min with
four field-selectable sub-ranges. The universal model comes in one
pressure/velocity range: 0-10 in. WC / 0-7,000 ft/min with seven field-
selectable sub-ranges for pressure and eight for velocity. All variants are
available with and without display. The PX3 has an IP65/NEMA 4 environmental
rating and a 5-year limited warranty.
The Veris Sensors App provides the ability to connect to a device and
configure a variety of field-selectable parameters remotely from a smartphone
via Bluetooth wireless technology. The app allows users to create and store
commonly used parameters that will reduce commissioning time and provide
assurance that all parameters are properly configured with no call backs. The
app can also create a trend log while connected, providing critical data for
troubleshooting purposes. iOS® users can download the app through the iOS App
Store on their smart device. Android users can download the app through the
Google Play™ store. For instructions on downloading and operating the app, see
the Veris Sensors App User’s Guide and Veris Sensors App Quick Start Guide
available on the Veris website.
Product Identification
PX3
Enclosure | Local Display | **NIST Certificate*** | Range |
---|
D = Duct
P = Panel| L = LCD Display
X = No Display| N = NIST
X = None| 01 = Pressure: 0 to 1 in. WC / 0 to 250 Pa Velocity: 0 to 3,000
ft/min / 0 to 15 m/s
02 = Pressure: 0 to 10 in. WC/0 to 2,500 Pa Velocity: 0 to 6,000 ft/min / 0 to
30 m/s
PX3U
Local Display | **NIST Certificate*** | Range |
---|
L = LCD Display
X = No Display| N = NIST*
X = None| 05 = Pressure: 0 to 10 in. WC / 0 to 2500 Pa
Velocity: 0 to 7000 ft/min / 0 to 35 m/s
Dimensions
Specifications
Media Compatibility | Dry air or inert gas |
---|---|
Input Power | Three-wire Volt mode: 24 Vac or 12-30 Vdc* Two-wire mA mode: |
12-30 Vdc*
Output Power| Field-selectable: 2-wire, loop-powered 4-20 mA
Minimum input voltage for 4 to 20 mA operation: 250 0 loop = 12 Vdc; 500 0
loop = 19 Vdc (DC only, clipped and capped), 24 Vac/dc or 3-wire 0-5V/0-10V
Minimum load resistance for Volt operation: 5 kfl
01 Pressure Range| Pressure Mode| Unidirectional: 0.1/0.25/0.5/1.0 in. WC,
switch selectable Bidirectional: ±0.1/±-0.25/±0.5/±1.0 in. WC, switch
selectable Unidirectional: 25 Pa/50 Pa/100 Pa/250 Pa, switch selectable
Bidirectional: ±25 Pa/±50 Pa/±100 Pa/±250 Pa, switch selectable
Velocity Mode| 500/1,000/2,000/3,000 ft/min 2.5/5/10/15 m/s
02 Pressure Range| Pressure Mode| Unidirectional: 1.0/2.5/5/10 in. WC, switch
selectable Bidirectional: ±1.0/±2.5/±5/±10 in. WC, switch selectable
Unidirectional: 250/500/1,000/2,500 Pa, switch selectable Bidirectional:
±250/±500/±1,000/±2,500 Pa, switch selectable
Velocity Mode| 3,000/4,000/5,000/6,000 ft/min 15/20/25/30/35 m/s
05 Pressure Range| Pressure Mode| Unidirectional: 0.1/0.25/0.5/1/2.5/5/10 in.
WC, switch selectable
Bidirectional: ±0.1/±0.25/±0.5/±1/±2.5/±5/±10 in. WC, switch selectable
Unidirectional: 25/50/100/250/500/1,000/2,500 Pa, switch selectable
Bidirectional: ±25/±50/±100/±250/±500/±1,000/±2,500 Pa, switch selectable
Velocity Mode| 500/1000/2000/3000/4000/5000/6000/7000 ft/min
2.5/5/10/15/20/25/30/35 m/s
Response Time| Standard: T95 in 20 sec, Fast: T95 in 2 sec, DIP switch
selectable
Mode| Unidirectional or bidirectional, DIP switch selectable
Display (Option)| Pressure mode: Signed 3-1/2 digit LCD, indicates pressure,
overrange indicator Velocity mode: Signed 4-1/2 digit LCD, indicates velocity,
overrange indicator
Proof Pressure| 3 psid (20, 600 Pa)
Burst Pressure| 5 psid (34, 500 Pa)
Pressure Mode Accuracy| ±1% FS (combined linearity and hysteresis)
Velocity Mode Accuracy| ±90 ft/min (±0.45 m/s) plus 5% of measured value**
Temperature Effect| 1 in. WC (250 Pa) models: 0.05%/°C; 10 in. WC (2,500 Pa)
models: 0.0196/°C (Relative to 25°C) 0 to 50 °C (32 to 122 °F)
Specifications (cont.)
Zero Drift (1-year)| 1 in. WC (250 Pa) models: 2.5% FS typ.; 10 in. WC (2,500
Pa) models: 0.25% FS typ.
---|---
Zero Adjust| Pushbutton auto-zero and digital input (2-pos terminal block)
Operating Environment| -20 to 60 °C (-4 to 140 °F)***
Altitude of Operation| 0 to 3000 m
Pollution Degree| 2
Humidity Range| 100% RH, non-condensing
Mounting Location| For indoor or outdoor use (display will not function below
0 °C (32 °F))
Fittings| Brass barb; 0.24″ (6.1 mm) o d
Suggested Cable| Shielded:
Belden #9939 (22 AWG) 3-wire multi-conductor (or similar)
Belden #9940 (22 AWG) 4-wire multi-conductor (or similar)
Belden #9939 (22 AWG) 5-wire multi-conductor (or similar)
Unshielded:
Belden #8443 (22 AWG) 3-wire multi-conductor (or similar)
Belden #8444 (22 AWG) 4-wire multi-conductor (or similar)
Belden #8445 (22 AWG) 5-wire multi-conductor (or similar)
Bluetooth Frequency Range| 2.402 to 2.480 GHz (Bluetooth version 4.2), enabled
by DIP switch, enabled by DIP switch
Maximum Output Power| 0 dBm
Limited Warranty| 5 years
Environmental Rating| IP65, NEMA 4
Flammability Rating| UL 94 SVA fire retardant ABS, plenum rated
EMC Conformance: EN 61000-6-3 and A1, Class B, EN 61000-6-1, EN61326-1 and EN61326-2-3.
- Class 2/II power source.
- For measured values between 200 and 7000 ft/min (1 and 35 m/s).
- Display will not function below 0 °C (32 °F).
Installation, Wiring & Configuration
-
Plan the installation. Panel or duct mount?For velocity applications, use the VFXP Series air velocity/measurement probe or AA18, AA19 or AA20 velocity pitot tubes. For use with the PX3P (panel) and PX3U (universal) models in Velocity mode only. Sold separately.
-
For duct mount applications, thread the probe into the back of the device housing, as shown in the dimensional drawing.
-
Configure the internal tubing for the selected installation method as described below. Duct mount tubing configuration:
a. Connect the right-side tube to the rear brass barb marked as “-” on the underside of the device housing.
b. Connect the left-side tube to the probe in the back of the device housing. Panel mount tubing configuration:
a. Connect the right-side tube to the rear brass barb marked as “-” on the underside of the device housing.
b. Connect the left-side tube to the front brass barb marked as “+” on the underside of the device housing. -
Mount the transducer (see the screw hole diagram below).
-
For applications using conduit, remove the cable gland nut on the bottom of the unit. Thread a standard 1/2-inch NPT female threaded coupler onto the body of the cable gland. Connect the opposite end of the coupler to the conduit.
-
Set DIP switches to desired settings.*
DIP Switch 1: Scale| DIP Switch 5: Output
---|---
ON = Pascal (m/s)| ON = 4-20 mA
OFF = in. WC (ft/min)| OFF = Voltage
DIP Switch 2: Mode| DIP Switch 6: Volt Scale
---|---
ON = Velocity| ON = 0-5 Vdc
OFF = Pressure| OFF = 0-10 Vdc
DIP Switch 3: Direction**| DIP Switch 7: Bluetooth
---|---
ON = Unidirectional| ON = Disabled
OFF = Bidirectional| OFF = Enabled
DIP Switch 4: Response| DIP Switch 8: Unused
---|---
ON = Slow|
OFF = Fast|
*DIP switches are all set to OFF by the factory.
Velocity mode is unidirectional regardless of DIP switch setting.
DIP Switch Settings**
| Scale| Mode| Direction| Response| Output| Volt Scale| Bluetooth| Bluetooth
---|---|---|---|---|---|---|---|---
ON| Pascal/MPS| VelocityU| Uni| Slow| mA| 5V| Disabled| Disabled
OFF| in. WC/FPM| Pressur| BiF| Fast| Volt| 10V| Enabled| Unused
| 1| 2| 3| 4| 5| 6| 7| 8
7. Set rotary switch to the desired setting. Align the arrow (not the slot) on the rotary switch to the desired full-scale range. LCD models momentarily indicate the selected range.
Rotary Switch Settings
Range 01 Model, Field Selectable (WC / ft/min or Pa / m/s)
| (P) Pressure Mode
---|---
0| 0 to 0.1 in. WC
1| 0 to 0.25 in. WC
2| 0 to 0.5 in. WC
3| 0 to 1 in. WC
4| 0 to 0.1 in. WC
5| 0 to 0.25 in. WC
6| 0 to 0.5 in. WC
7| 0 to 1 in. WC
| (V) Velocity Mode
---|---
0| 0 to 500 ft/min
1| 0 to 1,000 ft/min
2| 0 to 2,000 ft/min
3| 0 to 3,000 ft/min
4| 0 to 500 ft/min
5| 0 to 1,000 ft/min
6| 0 to 2,000 ft/min
7| 0 to 3,000 ft/min
| (P) Pressure Mode
---|---
0| 0 to 25 Pa
1| 0 to 50 Pa
2| 0 to 100 Pa
3| 0 to 250 Pa
4| 0 to 25 Pa
5| 0 to 50 Pa
6| 0 to 100 Pa
7| 0 to 250 Pa
| (V) Velocity Mode
---|---
0| 0 to 2.5 m/s
1| 0 to 5 m/s
2| 0 to 10 m/s
3| 0 to 15 m/s
4| 0 to 2.5 m/s
5| 0 to 5 m/s
6| 0 to 10 m/s
7| 0 to 15 m/s
Range 02 Model, Field Selectable (WC / ft/min or Pa / m/s)
| (P) Pressure Mode
---|---
0| 0 to 1 in. WC
1| 0 to 2.5 in. WC
2| 0 to 5 in. WC
3| 0 to 10 in. WC
4| 0 to 1 in. WC
5| 0 to 2.5 in. WC
6| 0 to 5 in. WC
7| 0 to 10 in. WC
| (V) Velocity Mode
---|---
0| 0 to 3,000 ft/min
1| 0 to 4,000 ft/min
2| 0 to 5,000 ft/min
3| 0 to 6,000 ft/min
4| 0 to 3,000 ft/min
5| 0 to 4,000 ft/min
6| 0 to 5,000 ft/min
7| 0 to 6,000 ft/min
| (P) Pressure Mode
---|---
0| 0 to 250 Pa
1| 0 to 500 Pa
2| 0 to 1,000 Pa
3| 0 to 2,500 Pa
4| 0 to 250 Pa
5| 0 to 500 Pa
6| 0 to 1,000 Pa
7| 0 to 2,500 Pa
| (V) Velocity Mode
---|---
0| 0 to 15 m/s
1| 0 to 20 m/s
2| 0 to 25 m/s
3| 0 to 30 m/s
4| 0 to 15 m/s
5| 0 to 20 m/s
6| 0 to 25 m/s
7| 0 to 30 m/s
Rotary Switch Settings (cont.)
Range 05 Model, Field Selectable (P) Pressure or (V) Velocity Mode, Field Selectable (WC / ft/min or Pa / m/s)
| (P) Pressure Mode
---|---
0| 0 to 0.1 in. WC
1| 0 to 0.25 in. WC
2| 0 to 0.5 in. WC
3| 0 to 1 in. WC
4| 0 to 2.5 in. WC
5| 0 to 5 in. WC
6| 0 to 10 in. WC
7| 0 to 10 in. WC
| (V) Velocity Mode
---|---
0| 0 to 500 ft/min
1| 0 to 1,000 ft/min
2| 0 to 2,000 ft/min
3| 0 to 3,000 ft/min
4| 0 to 4,000 ft/min
5| 0 to 5,000 ft/min
6| 0 to 6,000 ft/min
7| 0 to 7,000 ft/min
| (P) Pressure Mode
---|---
0| 0 to 25 Pa
1| 0 to 50 Pa
2| 0 to 100 Pa
3| 0 to 250 Pa
4| 0 to 500 Pa
5| 0 to 1,000 Pa
6| 0 to 2,500 Pa
7| 0 to 2,500 Pa
| ( V) Velocity Mode
---|---
0| 0 to 2.5 m/s
1| 0 to 5 m/s
2| 0 to 10 m/s
3| 0 to 15 m/s
4| 0 to 20 m/s
5| 0 to 25 m/s
6| 0 to 30 m/s
7| 0 to 35 m/s
Connect the transmitter to the control system and power supply as indicated
below. Optional: Connect the ZERO terminals to the digital output (contact
closure) of the control system.
2-wire, 4-20 mA Current Loop Output 3-wire, 0-5
V/0-10 V Voltage Output Wait five seconds, then press and hold
the ZERO pushbutton for two seconds or provide contact closure on the AUX ZERO
terminal. This will reset the output and display to zero pressure. For best
accuracy, press the ZERO button while both ports are open to atmospheric
pressure. To protect the unit from accidental zero, this feature is enabled
only when the detected pressure is within about 0.5 in. WC (125 Pa) of factory
calibration.
Connect desired external tubing to the PX3.
Operation
PX3 Series devices employ high performance sensors and sophisticated
temperature compensation circuitry. The sensor achieves its best accuracy
after an initial warm-up period. During the first few minutes of operation,
readings at zero pressure and the lowest pressure ranges appear erroneous.
Following this initial warm-up period, the PX3 device maintains its specified
accuracy and stability.
The LCD momentarily indicates range ‘SET’ when a selection is made. Pressure
is normally indicated on the display. Units are in inches water column (in.
WC), Pascals (Pa) or kilopascals (kPa) as indicated on the display. The
display shows ‘OVER’ when the pressure is over range.
China RoHS Compliance Information
Environment-Friendly Use Period (EFUP) Table
Hazardous Substances
Part Name| (Pb)| (Hg)| (Cd)| (Cr (VI))| (PBB)| (PBDE)
Electronic| X| O| O| O| O| O
This table is made according to SJ/T 11364.
O: indicates that the concentration of hazardous substance in all of the
homogeneous materials for this part is below the limit as stipulated in GB/T
26572.
X: indicates that concentration of hazardous substance in at least one of the
homogeneous materials used for this part is above the limit as stipulated in
GB/T 26572 Z000057-0B
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