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SmartReader Plus Data Loggers
39
· The Low Pressure Model. This model has an internal pressure channel with 0 to 10"
water column sensor and an internal temperature sensor.
1.6.2
Setup
Using the Standard Pressure Channel
1.
If you are going to measure pressure, you will need the appropriate fittings to tie into the
system or equipment you intend to monitor.
2.
Use TrendReader software to enable the pressure channel. Then assign the correct
pressure equation for the model you are using.
Pressure Models
The following table describes the models available and includes the range over which they can
be used, the resolution of readings they will provide and the equation you should assign to the
pressure channel.
Range
10" H20 (2.5kPa)
±10" H20 Differential
0 to 5 PSI (30kPa)
0 to 30 PSI (200kPa)
0 to 100 PSI (700kPa) 0.05 PSI (0.35kPa)
0 to 150 PSI
(1000kPa)
Pressure Measurement Precautions
The SmartReader Plus 4 is designed for long-term, trouble-free performance but there are a
few precautions to keep in mind to maximize the benefit it can give you.
· The pressure sensor in the SmartReader Plus 4 is compatible with non-corrosive gases
and dry air. It is not to be used for liquid pressure measurements.
EH-020A Temperature and Relative Humidity Probe
The EH-020A is a four-wire probe with a temperature and relative humidity sensor. For
field-mounting convenience, it also has a magnetic backing and a security eyelet. To use the
EH-020A with your SmartReader Plus 4, you must enable the logger's external temperature
Channel
0
Internal Temperature
2
External Temperature
3
External Relative Humidity
4
Standard Model
Resolution
0.006" H20 (0.0015
kPa)
0.006"H20 (0.0015
kPa)
0.003 PSI (0.02kPa)
0.015 PSI (0.1kPa)
0.05 PSI (0.5 kPa)
Description
Gauge
SRP-004-010
SRP-004-LPD
SRP-004-5G
SRP-004-30G
SRP-004-100G SRP-004-100A
SRP-004-150G
Copyright © 2010 ACR Systems Inc. All Rights Reserved.
Equation
45
Appendix C
71
see below
Absolute
Equation
n/a
37
n/a
37
n/a
20
SRP-004-30A
8
22
n/a
104
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Troubleshooting
