Type 8025

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Remote batch controller

Note:

If the device is mounted in a humid environment or outside, then the maximum voltage allowed is 35 V DC instead of 36 V DC.

Product properties

Compatibility

Bürkert flow sensor with frequency output (Types 8020, 8030, 8030HT, 8041, 8031, 8070, 8071, 8077)

or other sensors with compatible electrical data

Electrical data

Operating voltage (V+)

• 12…36 V DC, max tolerance: - 5 % or + 10 % at 12 V DC, ± 10 % at 36 V DC, filtered and regulated

Connection to main supply: permanent, through external SELV (Safety Extra Low Voltage) and LPS

(Limited Power Source) power supply

• 115/230 V AC, 50/60 Hz

Voltage supply available inside the device:

– supplied voltage: 27 V DC regulated

– maximum current: 250 mA

– integrated protection: 250 mA time delay fuse

Current consumption

With sensor and without consumption of 4…20 mA output of the flowmeter

• With relays:

– ≤ 70 mA (at 12 V DC)

– ≤ 45 mA (at 36 V DC)

– ≤ 50 mA (115/230 V AC, wall-mounted variant)

• Without relay:

– ≤ 50 mA (at 12 V DC)

– ≤ 30 mA (at 36 V DC)

– ≤ 35 mA (115/230 V AC, wall-mounted variant)

Power consumption

115/230 V AC powered measuring device: 6 VA

Device input (from sensor)

• Frequency range: 0.6 Hz…2.2 kHz

• Voltage: Max. 36 V DC

• Type of the signal:

– pulse: open collector NPN (with 470 Ω or 2.2 kΩ resistance) or PNP, TTL, CMOS (with 39 kΩ

resistance)

– sine-wave: coil (with 39 kΩ resistance)

Device output (to sensor)

• Voltage supply with a powered 12…36 V DC transmitter:

– 10.5…34.5 V DC [= (V+) - 1.5 V DC], 140 mA max.

– 0…23.5 V DC [= (V+) - 12.5 V DC], 80 mA max.

– 5 V DC, 30 mA max.

• Voltage supply with a powered 115/230 V AC transmitter:

– + 27 V DC, 80 mA max.

– + 14.5 V DC [= (V+) - 12.5 V DC] 80 mA max.

– 5 V DC, 30 mA max.

Input

• DI (1 to 4)

• Switching threshold V

on: 5…36 V DC

• Switching threshold V

off max.: 2 V DC

• Min. pulse duration: 100 ms

• Input impedance: 9.4 kΩ

• Galvanic insulation, protected against polarity reversals and voltage spike