Specifications

10
SmartReader Plus 4 LPD
Two-Channel Low Pressure Differential Data Logger
The SmartReader Plus 4 LPD data logger is designed to be used in applications
where very precise, low differential pressure measurements are required.
Order Information
MODEL PRESSURE RANGE ACCURACY MEMORY CATALOG #
SRP-004-LPD-0.5 +/- 0.5” WC +/- 0.05” 32 KB 01-0310
SRP-004-LPD-1 +/- 1.0” WC +/- 0.05” 32 KB 01-0311
SRP-004-LPD-2 +/- 2.0” WC +/- 0.05” 32 KB 01-0312
SRP-004-LPD-5 +/- 5.0” WC +/- 1.0” 32 KB 01-0313
SRP-004-LPD-10 +/- 10.0” WC +/- 1.0” 32 KB 01-0314
PRODUCT SPECIFICATIONS
No. of Channels:
Two - One for ambient temperature
- One for low pressure
Sensor Type:
Silicone piezoresistive strain gauge
Pressure Ranges (Water Column):
+/- 0.5”, +/- 1.0”, +/- 2.0”, +/- 5.0”, +/- 10”
Maximum Pressure:
Four times full scale
Media:
Non-corrosive gases and dry air
Temperature Range:
Operating: -40 to 70ºC (-40 to 158ºF)
Compensated: 0 to 70ºC (32 to 158ºF)
Accuracy:
Calibrated: +/- 0.05” for 0.5”, 1.0” and 2.0” ranges
+/- 1.0” for 5.0” and 10.0” ranges
Thermal: +/- 0.5% FS (over compensated range)
Resolution:
< 0.01” WC
Non-linearity:
+/- 0.05% FS (best fit straight line)
Hysteresis & Repeatability:
+/- 0.05% FS (typical)
Long Term Stability:
+/- 0.5% FS
Memory Size:
32 KB
Common Specifications:
See page 6
Software Specifications:
See page 34
Remote & Network Communications:
See page 38
FEATURES
• Two channels
• Monitor very low
pressure - several
ranges to choose
from
• Very precise and
accurate measure-
ments
• Extra fine pressure
resolution
• Temperature
compensated