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Model CXLdp Differential
PressureTransmitter
BULLETIN CT-6
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
Digitally compensated, 0.4% F.S. and
0.8% F.S. 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).
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
0/0.1
0/1.0
0/5.0
0/0.25
0/2.0
0/10.0
0/0.5
0/2.5
0/15.0
0/0.75
0/3.0
0/25.0
Bidirectional Ranges:
Compound
±0.1
±1.0
±10.0
±0.25
±2.0
±15.0
±0.5
±5.0
Response Time: 250 msec
ENVIRONMENTAL SPECIFICATIONS
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)
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
Output Signal:
Power:
4-20mA (2 wire)
12-36 Vdc
0-10Vdc* (3 wire)
14-36 Vdc or 24Vac (±20%)
*(User selectable 0-5Vdc option)
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
Pressure Connections:
14 brass barbed fittings
18 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: 12 plenum/conduit mounting bracket and
cover kit (order part #101A213-01)
XRH: (9 point NIST Calibration Certification)
APPLICATION
Low-pressure measurement for
building energy management
and comfort control
3
WARRAN
TY
YEAR
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
The silicon diaphragm sensor has no glues or
other organics to contribute to drift or
mechanical degradation over time.
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
All specifications are subject to change without notice.
All sales subject to standard terms and conditions.
Ashcroft Inc. 2007 10/08
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