Pressure Monitoring | Wet Media Differential Pressure Transducer
PW SERIES
Jumper-Selectable Port Swap Feature
PW
The PW Series wet pressure transducers incorporate microprocessor
profiled sensors for exceptional accuracy and reliability. Easy to use
and designed to provide exceptional installation savings, the PW Series
is ideal for measuring pressure across pumps, filters, heat exchangers,
compressors, and other non-corrosive wet media applications.
The jumper-selectable port swap feature eliminates costly replumbing
when the high and low ports are improperly plumbed, allowing the
jumper position to be changed from normal to swap.
SPECIFICATIONS
GENERAL
Input Power Class 2; 12 to 30 Vdc or 24 Vac nominal, 50/60 Hz
Max. Current Draw DC: 125 mA; AC: 280 mA
Output 3-wire transmitter; user selectable 4 to 20 mA
(clipped & capped)/0-5 V/0-10 V*
Surge Damping Electronic; 5-second averaging
Test Mode Overrides output to full-scale (20 mA, 5 V, 10 V)
Zero Adjust Pushbutton auto-zero & digital input (2-pos
terminal block)
Status Indication Dual-color LED:
Green = Normal, Green Blinking = Low > High,
Red = Overrange, Red Blinking = Overpressure
Housing Material White powder-coated aluminum
Fittings psig: 1/8” NPT female thread, 17 to 4 PH
stainless; barg: 1/8” BSPT female thread, 17 to 4
PH stainless
PRESSURE RANGES (SELECTABLE)
0 to 50 psig (Gauge) 0 to 5/10/25/50 psid (Differential)
0 to 100 psig (Gauge) 0 to 10/20/50/100 psid (Differential)
0 to 250 psig (Gauge) 0 to 25/50/125/250 psid (Differential)
0 to 3.5 barg (Gauge) 0.35/0.7/1.75/3.5 bard (Differential)
0 to 7.0 barg (Gauge) 0.7/1.4/3.5/7.0 bard (Differential)
0 to 17.0 barg (Gauge) 1.7/3.4/8.5/17.0 bard (Differential)
SENSOR
Accuracy @ 25 °C** Range A, B, C: ±1% F.S.; Range D: ±2% F.S.***
Long Term Stability ±0.25% per year
Media Compatibility Media compatible with 17 to 4 PH stainless steel
Proof Pressure Max. 2x F.S. range
Burst Pressure Max. 5x F.S. range
Jumper-selectable
The jumper-selectable output
switch for normal (4 to 20 mA) or
reverse (20 to 4 mA) operation
Switch-selectable
Switch-selectable pressure
ranges
…fewer models to order
and stock
provides application flexibility
Rugged
Rugged, die-cast enclosure
provides NEMA 4 sealing
Zero calibration
Pushbutton and remote zero
adjustment
…maintain accuracy
and reduce callbacks with
automatic zero calibration
High stability
Jumper-controlled electronic surge
dampening for high stability
APPLICATIONS
• Monitoring and controlling
pump differential pressure
• Chiller/boiler differential
pressure drop
Temperature
Compensated Range
Media Temp Limits -20 to 85 °C (-4 to 185 °F); 0 to 90% RH
Product Operating
Environment
WARRANTY
Limited Warranty 5 years
AGENCY APPROVALS
†
Available
*Minimum input voltage for 4 to 20 mA operation: 250 Ω loop (1 to 5 V) = 12 Vdc;
500 Ω loop (2 to 10 V) = 15 Vdc; Minimum input voltage for volt operation: 0 to 5 Vdc output
= 12 Vdc; 0 to 10 Vdc output = 15 Vdc.
**Accuracy combines linearity, hysteresis, and repeatability.
*** FS is defined as full span of selected range in bi-directional mode.
EMC Conformance - CE option: Low voltage directive 2014/35/EU; EMC directive 2014/30/EU.
EMC Special Note: Connect this product to a DC distribution network or an AC/DC power
adaptor with proper surge protec tion (EN 61000-6-1 specification requirements).
† The CE mark indicates RoHS2 compliance. Please refer to the CE Declaration of Conformity
for additional details.
0 to 50 °C (32 to 122 °F); TC Zero <±1.5% of
product F.S. per sensor ; TC Span<±1.5% of
product F.S. per sensor, (2 sensors per unit)
non-condensing
-10 to 55 °C (14 to 130 °F); 0 to 90% RH
non-condensing
• CW/HW system differential
pressure
TM
HQ0001831.G 0117
WIRING DIAGRAM
POWER SOURCE
12 to 30 Vdc/24 Vac
DIGITAL CONTROL
Analog Input
0-5 V/0-10 V
or 4 to 20 mA
Optional
Digital Output
DIMENSIONAL DRAWING
POWER
SIGNAL
COM
WET DIFFERENTIAL PRESSURE
PW SERIES
REMOTE ZERO
(Dry Contact)
2.2"
(57 mm)
4"
(102 mm)
ZERO
Range
JP8
A
JP7
B
JP6
C
JP3
D
JP2
JP1
Bidirectional Operation
Input Conditions Result Outputs Read
HI PORT
100 psi
100 psi
50 psi
50 psi
0 psi
17.0 bar
17.0 bar
8.5 bar
8.5 bar
0 bar
Model
PW-03
PW-04
PW-05
Model
PW-06
PW-07
PW-08
Analog Reverse/Normal
Port Swap/Normal
Bidirectional/Normal
Fast/Slow Surge Damping
5 V/10 V Output
mA/Volts Output
LO PORT
0 psi
50 psi
50 psi
100 psi
100 psi
0 bar
8.5 bar
8.5 bar
17.0 bar
17.0 bar
A
50
100
250
A
3.5
7.0
17.0
Pressure Monitoring | PW Series
/
Output is either
mA or V
0.7
1.4
3.4
C
10
20
50
C
0.35
0.7
1.7
4-20mA 0-10V
20mA
16mA
12mA
8mA
4mA
20mA
16mA
12mA
8mA
4mA
Use the Range switch to
select F.S. differeintial
pressure.
D
5
e.g. PW-04
10
25
D
e.g. PW-08
10V
7.5V
5V
2.5V
0V
10V
7.5V
5V
2.5V
0V
DP
+100 psi
+50 psi
0 psi
-50 psi
-100 psi
+17.0 bar
+8.5 bar
0 bar
-8.5 bar
-17.0 bar
Range (psi)
B
25
50
125
Range (bar)
B
1.75
3.5
8.5
e.g. PW-04
e.g. PW-08
5.8"
LOW
HIGH
(147 mm)
ORDERING INFORMATION
Local Display
PW
L = LCD Display
X = No Display
Example:
XL 04 CPW
* Select operational range according to maximum gauge pressure, NOT differential
pressure.
Example: High gauge pressure=90 psig, Select 100 psig model (04).
**Barg models use BSPT threads on sensor fittings
***Not available with barg units
HQ0001831.G 0117
NIST
N = NIST
X = None
Operational Range*
03 = 0-50 psi g
04 = 0-100 psig
05 = 0-250 psig
06 = 0-3. 5 barg**
07 = 0-7.0 barg**
08 = 0-17 barg**
US or EU
S = Standard***
C = CE
TM
MICROPROCESSOR PROVIDES DIGITAL SIGNAL
CONDITIONING
• Noise rejection reduces
fluctuating readings due to
noise or turbulence
F.S.
Noise Rejection
PRESSURE
0
Actual Pressure
Digitally Conditioned Output
• Surge damping prevents false
alarms by averaging fast peaks
Output Clamping
Surge Damping
TIME