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CF-measuring amplifier MBI 46.31.

Standard measuring amplifier in field housing for operation of inductive LVDT sensors 
  • Suitable for LVDT and LVIT
  • Rugged field housing IP65
  • Adjustable gain, zero offset and phase adjustment
  • Fine adjustment possible on site via potentiometer

Important features

  • Supply voltage: +24 VDC / +230 VAC
  • Carrier frequency: 5 kHz (others optional)
  • Output signal: +10 V / 4 ... 20 mA
  • Type: Cast housing with cable gland

Technical data

     
Linearity   < 0,1 % FSO
Carrier frequency   5 kHz ±5 % (sine); optional: 1 ... 20 kHz
Dynamic range   500 Hz (±3 dB); (max. 1/10 of carrier frequency)
Supply voltage (primary)   approx. 2 Vrms at 5 kHz, sinusoidal; max. 12 mArms
Input resistance (secondary)   approx. 200 kΩ
Output signal   4 ... 20 mA, load < 500 Ω or ±10 VDC, load resistance > 10 kΩ
Noise level and residual carrier voltage   < 5 mVrms
Temperature coefficient of zero-value   < 0,10 % / 10 K at 100 mV/V
< 0,15 % / 10 K at 20 mV/V
Temperature coefficient of gain   < 0,05 % / 10 K at 100 mV/V
< 0,15 % / 10 K at 20 mV/V
Operating temperature   0 ... 60 °C
Storage temperature   -25 ... 85 °C
Electromagnetic compatibility   DIN EN 61326-1
Electrical safety   DIN EN 61010-1

Field housing ±15 V or 24 V

   
Supply voltage MBI 46.31.1y: ±15 VDC stabilized, resp.
MBI 46.31.3y: +20 ... +36 VDC
Power consumption
max. 2 W
Electrical connection Terminal block (internal), connection cable for supply voltage,
LVDT sensor and output signal led out
Dimension approx. W 120 x H 91 x D 122 mm
Weight
approx. 1,4 kg
Protection (DIN 40050)
IP 65

Field housing 230 VAC (115 VAC)

   
Supply voltage
230 VAC (±10 %), 48 ... 60 Hz (115 VAC)
Power consumption
max. 4 W
Electrical connection Terminal block (internal), connection cable for Supply voltage (with Schuko plug),
LVDT sensor and output signal led out
Dimension W x H x D
approx. 120 x 91 x 220 mm
Weight
approx. 2 kg
Protection (DIN 40050)
IP 65

Suitable sensors

   
Inductive differential transformers (LVDTs) in 4-wire technology
Differential choke (LVITs) and long travel transducers (eddy current technology) Inductive half bridges with 3-wire technology
Rated output
20 ... 600 mV/V
Input impedance
100 ... 1000 Ω

Model list

Product code Design Supply Output ignal
MBI 46.31.17 Field housing ±15 VDC ±10 V
MBI 46.31.18 Field housing ±15 VDC 4 ... 20 mA
MBI 46.31.27 Field housing 230 VAC ±10 V
MBI 46.31.28 Field housing 230 VAC 4 ... 20 mA
MBI 46.31.37 Field housing +24 VDC ±10 V
MBI 46.31.38 Field housing +24 VDC 4 ... 20 mA
MBI 46.31.... Euroboard versions    
Options Order code
other carrier frequencies in the range 1 ... 20 kHz /... kHz
Output signal 0 ... 10 V /0-10 V
Output signal 0 ... 20 mA /0-20mA
Supply instead of 230V, only available in field housing /115 V

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