The Model 220 provides a simple low cost loop powered 8-28 Vdc two wire 4-20mA Transmitter
with highly visible local display allowing for monitoring at the unit and in the control room. The transmitter utilizes the same CSA, UL and ATEX rated sensor and explosion proof housing as on the Models 220and 240 explosion proof switches. Classification for Division 2 locations provides another alternative to
the installer that does not like additional junction boxes which are required for flying lead interfaces.
Common Applications
Measuring or Controlling the pressure drop across:
# Filters
# Strainers
# Separators
# Valves
# Pumps
Transmitter Specifications:
# 4-20mA Loop Powered Micro Processor based Transmitter
# 4 Position Terminal Strip
# 8-28 VDC Loop Powered 2-wire interface
# 1000 Ohm max loop resistance at 28 Vdc.
# ±2% Accuracy from 20% to 100% of scale, ascending
# Operating Range -20oF to 150oF (-20oC to 65oC)
# Indicator operation is isolated from Loop Power
# Assembly is housed in aluminum enclosure with 1/2" NPT access
# DIV II = NEMA 4X (IP65)
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