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.
of 42
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
ORDERING CODE
Model
DX3 - DXLdp Series, ±0. 25% of span, ±0.02% span T.C. /°F DX3
DX5 - DXLdp Series, ±0.50% of span, ±0.02% span T.C. /°F
DX7 - DXLdp Se ries, 1.00% of span, ±0.02% span T.C. /°F
Pressure Connection
F01 - ¹⁄
NPT Fema le F01
8
MB2 - ¹¹⁄64 Barbed Male
Output Signal
05 - 0-5 Vdc
10 - 0-10 Vdc
15 - 1-5 Vdc
16 - 1-6 Vdc
42 - 4-20 mA 42
Eletrical Termination
ST - Screw Terminal ST
Pressure Range
Unidirectional Ranges (differential)
P1IW - 0.10 IWD
P25IW - 0.25 IWD
P5IW - 0.50 IWD P5IW
1IW - 1.00 IWD
1P5IW - 1.50 IWD
2IW - 2.00 IWD
2P5IW - 2.50 IWD
3IW - 3.00 IWD
5IW - 5.00 IWD
10IW - 10.00 IWD
15IW - 15.00 IWD
20IW - 20.00 IWD
25IW - 25.00 IWD
50IW - 50.0 0 IWD
Bi-directional Ranges
P05IWL - ±0.05 IWD
P1IWL - ±0.10 IWD
P25IWL - ±0.25 IWD
P5IWL - ±0.50 IWD
P75IWL - ±0.75 IWD
1IWL - ±1.00 IWD
2IWL - ±2.00 IWD
2P5IWL - ±2.50 IWD
3IWL - ±3.00 IWD
5IWL - ±5.00 IWD
10IWL - ±10.00 IWD
25IWL - ±25.00 IWD
Opti ons (i f indicating an option(s) must i nclude an “X”) –X__
21 - 2:1 Turndown
CL - Custom pressure range calibration
DL - LED range status indicators (includes front acce ss test jacks)
NH - SS tag
NL - Front access test jacks (no LED indication)
NN - Paper t ag
PV - SpoolCal™ process valve actuator PV
RH - 9 pt. NIST traceab le calibration re port (O PT. for DX7/1.00% accuracy ve rsion, STD. for DX3 and DX5)
X1 - Fast response time (10 ms)
X2 - Slow response time (1 sec)
Example:
DX3 F01 42 ST P5IW –XPV
of 43
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
3.18
DIMENSIONS
For reference only, consult Ashcroft for specific dimensional drawings
SpoolCal and LED (OPT.)
5.29
+
Model: DXLdp
3.18
Zero
Span
Zero
V+ V– Out
+P
Test
–P
–
3.92
Basic Unit
Model: DXLdp
3.92
4.96
0.89
Span
Zero
V+ V– Out
0.89
of 44
Loading...