E+H Electromagnetic Flowmeter - E+H

E+HE+H magnetic flowmeter

Features and benefits

• Nominal diameters DN 25...200

• PFA or PTFE lining

• PFA for high-temperature applicati

up to +180 °C (Ex: up to +150 °C

• Fitting lengths to DVGW and ISO

• Measuring accuracy: ± 0.5%

• Robust field housing, IP 67, with

separate terminal compartment

• “Touch control”: operation without

opening the housing - also for

Ex-rated applications

• Communication: HART is standard

• Intrinsically safe Ex ia for installatio

zone 1 (ATEX, FM, CSA, etc.)

• Transmitter supply:

– Non-Ex environment: 12...30 V D

– Ex environment: 13.9...30 V DC

• Connecting to all mainstream transmit-
ter power supplies and input cards of
process control systems
• Reduced installation and operation
costs

Application
All fluids with a m
≥ 50 µS/cm can b
•acids
•alkalis
• paints, lacquers
• water, etc.

Measuring system The measuring system consists of a transmitter and a sensor.
Compact version: transmitter and sensor form a single mechanical unit.
• Transmitter:
Promag 23 (“Touch Control” without opening the housing, four-line display)
•Sensor
Promag P (DN 25...200)

Input
Measured variable Flow rate (proportional to induced voltage)
Measuring range Typically v = 0.01...10 m/s with the specified measuring precision
Operable flow range Over 1000 : 1

Output signal • Current output:
Applied direct current 4...20 mA, input from DC voltage source.
Terminal voltage: 12...30 V DC, 13.9...30 V DC (Ex i)
• Frequency output:
Open collector, passive, galvanically isolated, 30 V DC, 100 mA (250 mA / 20 ms)
Optional configurable as:
– Frequency output:
Full scale frequency 500...10000 Hz (fmax = 12.5 Hz)
or
– Pulse output:
Pulse value and pulse polarity adjustable, pulse width adjustable (0.01...10 s), pulse
frequency max. 50 Hz
or
– Status output:
E.g. for error messages, Empty Pipe Detection, flow direction recognition, limit value
configurable
• Ex i version:
– Power-supply, signal circuits and pulse output with "intrinsically safe" protection rating,
EEx ia IIC and EEx ia IIB, only for connection to certified, intrinsically safe circuits with

the following maximum values: Ui
= 30 V, Ii
= 150 mA, Pi
= 810 mW
Effective internal inductance: negligible
Effective internal capacitance: Ci
≤ 25 nF
– Pulse output:
Maximum values: Ui
= 30 V, Ii
= 10 mA, Pi
= 1 W
Effective internal inductance: negligible
Signal on alarm • Current output → failure response selectable
• Pulse/frequency output → failure response selectable
• Status output → “non-conductive” by fault or power supply failure
Low flow cut off Switch points for low flow cut off are selectable.
Galvanic isolation Outputs are galvanically isolated from sensor and from each other.