美國ERDCO公司是世界著名的流量計、流量變送器、流量開關專業生產廠家，提供完善的冷凍水、空氣、氮氣、蒸汽、潤滑油或其他工藝液體流量測量解決方案。

3700 Armor-Flo meter with NEMA-7 Enclosure

Transmit a signal or actuate limit switches in hazardous areas with the 3700 Series Armor-Flotm meter. The cover housing is listed by Underwriters Laboratories as an enclosure for metering equipment in hazardous areas. It contains an easy to read calibrated scale and the signal output or switch circuitry. These devices are magnetically coupled with the flow sensor. This results in complete isolation from the fluid stream.

Six signal and switch options are available:
4-20 mA two wire transmitter
4-20 mA transmitter and frequency output
4-20 mA transmitter with 2 adjustable setpoints
Low flow limit switch
High flow limit switch
Low and high flow limit switches

All instruments are calibrated to the liquid or gas flow conditions that you specify. A wide range of connection types, engineering units, signal options and sizes are available.
Quick Overview
Description: Flow rate meter with transmitter/ switches for hazardous areas Div1, Group C&D
Applications: Liquids or gases (steam with switch only)
Functions: Direct reading flow rate, 4-20 mA output, Frequency output, Lo/Hi switches
Features: XP meter w/ signal output or switches, Opaque fluids OK, Calibrated for application conditions
Materials: 316 sst
Pressure Limits: 200 psig 1/2 – 12″, 400 psig 1/2 – 12″
Temperature Limits: 185oF with transmitter, 400o with switch (requires epm or viton o-ring)
Pipe Sizes: 1/2″-12″