Ashcroft DXLdp Specifications
All speci fications are subject to change without notice.
All sales subject to standard terms and conditions.
©2019 Ashcroft Inc. dxldp_transmitter_ds_RevB_04-19
ashcroft.com
info@ashcroft.com
1.800.328.8258
Data Sheet
DXLdp Ultra-Low Differential Pressure Transmitter
FEATURES
The exclusive patented Ashcroft® SpoolCal™ actuator
provides in-place system calibration
2:1 range turndown (OPT.)
Front access test jacks provide on-line signal
reference without removing wiring
LED range status indicators for instant
troubleshooting information
Si-Glas™ technology enables precise measurement
and control of very low pressures
TYPICAL USES
HVAC/R
Bio-pharm
Bio-tech
Room pressurization and control
Velocity pressure
Critical environments
Building energy management/comfort control systems
DXLdp
Pressure Transmitter
PERFORMANCE SPECIFICATIONS
Reference
Temperature:
Accuracy Class: Three Options: ±0.25%, ±0.5%, ±1.0% of span
Stability: ≤ ±0.25% of span/year
Media Compatibility: Clean, dry and non-corrosive gas
Standard Response
Time:
ENVIRONMENTAL SPECIFICATIONS
Temperature Limits: Storage:
Thermal Coefficients:
Humidity Effects:
FUNCTIONAL SPECIFICATIONS
Max. Static (Line)
Pressure:
25 psi
Mounting Position
Effect:
70°F±2ºF (21°C±1ºC)
(Terminal Point Method: includes non-linearity,
hysteresis, non-repeatability, zero offset and span
setting errors)
NOT FOR USE ON LIQUIDS
250ms
Operating:
Compensated:
Zero & Span: ±0.02% of span/°F
(From 70°F (21°C) reference temperature)
No performance effect at 10-95% R.H.
noncondensing
Proof:
15 psid
Mounting Position Effect easily corrected with zero
potentiometer
≥0.5 IWC 0.1% span/g
<0.5 IWC 0.25% span/g
–40°F to 180°F (–40°C to 82°C)
–20°F to 160°F (–29°C to 71°C)
35°F to 135°F (1.6°C to 57°C)
Burst:
25 psid
KEY BENEFITS
• Broad temperature capability
• DIN rail mount dramatically reduces installation
and calibration costs
• CE standard with all outputs
• On-board voltage regulation allows use of lower
cost, unregulated power supply
• SpoolCal™ process valve actuator provides
in-place system calibration without disturbing
process tubes
ELECTRICAL SPECIFICATIONS
Potentiometers: Front accessible, non-interactive
Supply Current: <10 mA for Voltage
Warm-up Time: 5sec Max. to meet stated specifications from
Output Signal:
4-20 mA (2 wire)
1-5 Vdc (3 wire)
1-6 Vdc (3 wire)
0-5 Vdc (3 wire)
0-10 Vdc (3 wire)
Circuit Protection: Reversed wiring protection
Zero: ±5% F.S.
Span: ±3% F.S.
initial Power-up
Power:
12-36 Vdc
12-36 Vdc
12-36 Vdc
12-36 Vdc
12-36 Vdc
Output signal is independent of power supply
changes: 12-36 Vdc range without effect on
output signal
of 41
All speci fications are subject to change without notice.
All sales subject to standard terms and conditions.
©2019 Ashcroft Inc. dxldp_transmitter_ds_RevB_04-19
ashcroft.com
info@ashcroft.com
1.800.328.8258
Data Sheet
DXLdp Ultra-Low Differential Pressure Transmitter
PHYSICAL SPECIFICATIONS
Electrical Connection: Screw Termination
Enclosure Rating: NEMA 1 case
Mounting:
Pressure
DIN rail types EN50022, 35 and 45
¹⁄8
NPT Female, ¹¹⁄
64
barbed Male
Connections:
Weight: 4.5 oz
WETTED MATERIAL
Media
Clean, dry air/gases compatible with Aluminum, Titanium, PBT, Buna,
Glass, Gold, Silicone Rubber, Silicon, Silicone RTV and Brass
NOT FOR USE ON LIQUIDS
NON-WETTED
Housing
Glass-filled polycarbonate (UL94-V-1)
LOAD LIMITATIONS 4-20 mA OUTPUT ONLY
1,250
1,091
1,000
750
545
500
250
Loop Resistance ()
0
10
0
Featuring a highly reliable variable capacitance sensor using the patented
®
Ashcroft
Si-Glas™ sensor. This ultra-thin single crystal diaphragm provides
12 20 30 36
V
= 12V+ [0.022A*(R L)]
min
*includes a 10% safety factor
RL = RS + R
RL = Loop Resistance (ohms)
RS = Sense Resistance (ohms)
RW = Wire Resistance (ohms)
OPERATING
REGION
24
W
40
inherent 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.
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