Versatility is key with ERX

The ERX provides accurate pressure measurement, long term battery operation, remote communications, extended Audit Trail logging, and various pressure ranges. The combined set of features and options in this pressure/temperature recorder meets the needs of practically any Class 1, Division 1 & 2 location.


ERX Features

  • Up to 3 pressure inputs
  • Easy two-point calibration
  • 3 operating modes: Sample, Pushbutton Display, Serial Communications
  • Modbus Protocol with optional Protocol Translator Board
  • Extended Audit Trail Memory
  • Wall-mount, pipe-mount and portable mounting options
  • RBX Alarm notification
  • Variety of Reports: Log, Item, Site and Calibration
  • Expanded alarms, including High/High and Low/Low

ERX Specifications

Technical data
Maximum error at reference conditions including linearity, repeatability and hysteresis
Pressure Transducer: ± 0.4% of full scale
Temperature Sensor: ± 0.56°C (+/- 1.0°F)
Ambient Temperature Effects from -40 to 70°C (-40 to 160°F)
Pressure Transducer: ± 0.6% of full scale per 100°F
Temperature Sensor: No effect
Long Term Stability
Pressure Transducer: ± 0.5% of full scale per year
Temperature Sensor: ± 0.22°C (0.4°F) per year
Environmental Conditions
Ambient temperature range: -40 to 70°C (-40° to 160°F )
Ambient humidity: 0 to 100% non-condensing
Data Log Capacity (Log Interval/Capacity)
1 min/6.6 days
5 min/33 days
60 min/13 months
24 hrs/26 years
Wall mount, Pipe mount, Portable
Input voltage: 3.8 to 6 VDC
Battery Life: 4 years (w/4 D-cell alkaline battery pack at normal operating conditions)
Class 1, Division 1, Group D
Class 1, Division 2, Group D
Class 1, Zone 0, Group IIA
Weight and Dimensions
13.6 lbs (6.2 kg) in 800-series case
13.75” H x 10.63” W x 5.38” D