Model CXLdp Differential
Pressure Transmitter
APPLICATION
Low-pressure measurement for
building energy management
and comfort control
FEATURES
• Rugged ABS package capable of DIN
rail or standard panel mounting
• LED power status indicator to assist
in trouble shooting or quickly locating
the instrument on a duct
• Detachable Euro style terminal block
reduces wiring errors and field wiring
time
• 19 standard pressure ranges all
capable of withstanding 15 psi with-
out damage or calibration change
LOOK FOR THIS
AGENCY MARK ON
OUR PRODUCTS
PERFORMANCE SPECIFICATIONS
Ref. Temperature: 70°F ±2°F (21°C ±1°C)
Accuracy Class (Span):
±0.8%
±0.4%
Includes non-linearity, hysteresis, non-repeatability,
zero offset and span setting errors.
Stability – Max. Change
(Span/year):
≤0.25%
≤0.25%
Standard Ranges (Inches W.C.)
Unidirectional Ranges:
Differential
0/0.10
0/0.75
0/2.50
0/10.00
0/0.25
0/1.00
0/3.00
0/15.00
0/0.50
0/2.00
0/5.00
0/25.00
Bidirectional Ranges:
Compound
±0.10
±0.50
±2.00
±10.00
±0.25
±1.00
±5.00
±15.00
Response Time:
250 msec
Temperature Limits:
Storage
–40 to 180°F
Operating
+0 to 160°F
Compensated Range
+35 to 130°F
(10-95% R.H. non-condensing)
Temperature Coefficients:
Zero & Span
±0.03% Span/°F
EMC:
CE Compliant to EN61326: 1997+A1: 1998+A2:
2001 Annex A (Heavy Industrial)
ENVIRONMENTAL SPECIFICATIONS
TY
WARRAN
3
YEAR
• Digitally compensated, 0.4% Span
and 0.8% Span accuracy models
• NIST traceable
The Ashcroft
®
CXLdp transmitter uses
the patented Ashcroft Si-Glas
™
variable
capacitance sensor. This MEMS sensor
provides extraordinary sensitivity and long
term stability. New digital compensation is
accomplished using a highly reliable
application specific integrated circuit (ASIC).
Featuring a highly reliable variable capac-
itance sensor using the patented
Ashcroft
®
SiGlas
™
sensor. This ultra-thin
single crystal diaphragm provides inher-
ent sensor repeatability and stability.
SENSOR CROSS SECTION
FUNCTIONAL SPECIFICATIONS
Overpressure Limits:
Proof Pressure
15 psid
Burst Pressure
25 psid
Max. static line pressure
25 psi
Mounting Position Effect:
±1%/g (lowest range)
Note:
Calibration in vertical position is standard
ELECTRICAL SPECIFICATIONS
Voltage Output:
Supply Voltage: Supply Current:
4-20mA (2 wire)
12-36 Vdc
21.5mA
0-5 Vdc (3 wire)
11.5-36 Vdc
4.5mA
0-10 Vdc (3 wire) 14-36 Vdc or 24 Vac
6mA
Output signal is independent of power supply changes
Reverse Wiring Protected
Zero and Span Adjustment:
Externally accessible
Zero: ±5% F.S.
Span: ±5% F.S.
PHYSICAL SPECIFICATIONS
The silicon diaphragm sensor has no glues or
other organics to contribute to drift or
mechanical degradation over time.
Pressure Connections:
1
⁄
4
˝ brass barbed fittings
1
⁄
8
NPT Female brass
Electrical Connection:
Euro style pluggable terminal
block accepts 12-26 gauge wire
Enclosure:
NEMA Type 1 Fire-retardant ABS
(meets UL 94-5VA)
LED visual indicator standard
Weight:
Approx. 2.5 oz
Media:
Clean, dry and non-corrosive gas
Mounting:
Threaded fastener and 35mm DIN rail
mount standard.
Option:
1
⁄
2
˝ plenum/conduit mounting bracket and
cover kit (order part #101A213-01)
XRH:
(9 point NIST Calibration Certification)
BULLETIN CT-6
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
© Ashcroft Inc. 2007 10/09
Ashcroft Inc., 250 East Main Street, Stratford, CT 06614 USA
Tel: 203-378-8281 • Fax: 203-385-0408
email: info@ashcroft.com • www.ashcroft.com
Model CXLdp Low Pressure
Differential Transmitter
Load Limitations 4-20mA Output
Loop Resistance (Ω)
Ω
Ø.20
1250
LOOP RESISTANCE (OHMS)
1045
1000
H
HI I
PO ER
W
POWER
DIMENSIONS
(in inches)
BARB FITTINGS
"B2" 1/4
1.45
.36
1.32
LO
LO
750
ZERO
SPAN
2.90 3.33
500
250
0
0
10 12
20
30
36
40
OPERATING
REGION
Ø.16
1.89
1.45
“MB2” 1/4 BARBED FITTINGS
.35
1.32
LOOP SUPPLY VOLTAGE (VDC)
LOOP SUPPLY VOLTAGE (VDC)
V
min
= 12V+ [.022A*(R
L
)]
*includes a 10% safety factor
R
L
= R
S
+ R
W
R
L
= Loop Resistance (ohms)
R
S
= Sense Resistance (ohms)
R
W
= Wire Resistance (ohms)
POWER
.56
H I
LO
2.90
ZERO
SPAN
3.33
1.89
"01" 1/8 FEMALE NPT FITTINGS
1/8 FEMALE NPT FITTINGS
“F01”
ASSEMBLED WITH
101A213-01 CONDUIT KIT
PO ER
W
HI
LO
ZERO
SPAN
4.85
Standard DIN rail mount
Optional 1/2˝ plenum/conduit kit
2.06
Ø.88
.78
ASSEMBLED WITH 101A213-01
1
⁄
2
˝ PLENUM/CONDUIT KIT
How To Order
C X
Accuracy/TC
(8) 0.8%, ±0.03%/°F
(4) 0.4%, ±0.03%/°F
Connection
(MB2)
1
⁄
4
Barbed Male
(F01)
1
⁄
8
NPT Female
Output
Signal
(42) 4-20mA
(10) 0-10Vdc*
Pressure Range
Compound:
Diff. or Gauge:
(P1IWL) ±0.10˝W.C.
(P1IW) 0.10˝W.C.
(P25IWL) ±0.25˝W.C.
(P25IW) 0.25˝W.C.
(P5IWL) ±0.50˝W.C.
(P5IW) 0.50˝W.C.
(1IWL) ±1.00˝W.C.
(P75IW) 0.75˝W.C.
(2IWL) ±2.00˝W.C.
(1IW) 1.00˝W.C.
(5IWL) ±5.00˝W.C.
(2IW) 2.00˝W.C.
(10IWL) ±10.00˝W.C.
(2P5IW) 2.50˝W.C.
(15IWL) ±15.00˝W.C.
(3IW) 3.00˝W.C.
(5IW) 5.00˝W.C.
(10IW) 10.00˝W.C.
(15IW) 15.00˝W.C.
(25IW) 25.00˝W.C.
X
XAH**
Conduit Kit Packaged
with the CXLdp
XRH
Traceable 9 Point
Calibration Report
Type
(CX) CXLdp
Notes:
*Includes user selectable option 0-5Vdc output.
**Note: XAH option is for the conduit kit assembled with the CXLdp.
To get the conduit kit separately request Part No. 101A213-01
BULLETIN CT-6
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
© Ashcroft Inc. 2007 10/09
Ashcroft Inc., 250 East Main Street, Stratford, CT 06614 USA
Tel: 203-378-8281 • Fax: 203-385-0408
email: info@ashcroft.com • www.ashcroft.com
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