ATI
PQ45P Portable pH System
Part 1 - Introduction
7
O&M Manual
Rev-B (7/15)
Outputs
Two 0-2.5 VDC isolated outputs are provided on for connection
to data recorders, etc.
Battery Life
Approximately 100 hours with alkaline battery. Use of lithium cell
increases life to approximately 300 hours.
Optional Datalogger
Removable data module holds 32,000 points from two user
configured channels, time of logging is user configurable.
Software supplied for data download and display.
1.5
PQ45P Performance Specifications
Accuracy
0.1% of span or better (± 0.01 pH)
Repeatability
0.1% of span or better (± 0.01 pH)
Sensitivity
0.05% of span (± 0.01 pH)
Stability
0.05% of span per 24 hours, non-cumulative
(± 0.007 pH)
Warm-up Time
7 seconds to rated performance
Instrument Response Time
6 seconds to 90% of step input at lowest setting
Temperature Drift
Span or zero, 0.02% of span/°C
Max. Sensor-Instrument
3,000 ft. (914 meters) w/ preamp,
Distance
30 ft. (9.1 meters) w/o preamp
Sensor Types
Model Q25P pH w/ preamp - 5 wire input, or the standard
combination style pH electrode w/ TC - 2 wire input
