MM4408 Text

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MM4408
DC INPUT
DIFFERENCE TRANSMITTER
OUTPUT = A - B

FEATURES

Provides DC Output Proportional To Difference Of Two Inputs, Y = A - B

1 V or 1 mA Minimum Input Span

Unlimited* Choice of Input/Output Ranges

Choice of Power Options

10 + 5 Year Warranty

DESCRIPTION

The MM4408 provides a DC output voltage or current proportional to the difference of two DC inputs.

Typical input ranges are 4/20 mA, 10/50 mA, 0-1 V, 0-5 V and 0-10 VDC. Other ranges are available down to minimum spans of 1 V or 1 mA DC.

Standard calibration provides 0% output when both inputs are equal. Full scale (100%) output occurs when A is at 100% and B is at 0%. Other calibrations are available.

The modules include filtering and conditioning to reduce susceptibility to transients and noisy operations.

TYPICAL APPLICATIONS

Subtracting flows, weights, etc. for process monitoring, control and data acquisition.

MOUNTING

The MM4408 is designed to plug into a standard 11-pin socket. Part number MP011 is a molded plastic socket suitable for mounting on a flat surface or in a 2 3/4 inch wide PVC snap track (TRK48). Use CLP-1 hold-down clip, if needed. A Killark HK Series explosion-proof housing with dome and 11-pin socket is available (HKB-HK2D-11). A DIN rail mounted socket (DMP011) is available for 35mm symmetrical DIN rail.

SPECIFICATIONS

INPUT RANGE
Voltage
select any range between ±250 V
(min span 1 V)

Current
select any range between ±100 mA max
(min span 1 mA)

INPUT IMPEDANCE
Voltage
100 kilohms

Current
1.25 V drop typical,
others available

OUTPUT RANGE
Voltage
select any range from -10 V to +15V
10 mA max load
(min span 0.2 V)

Current
select any range from 0 to 50 mA max
    (min span 1 mA)
24 V compliance**
    18 V compliance for ISO option
    if full scale output >20 mA

RESPONSE TIME
< = 100 ms
(range dependent)

LINEARITY
±0.01% of span

BALANCE BETWEEN INPUTS
<= 0.2%

ISOLATION (Optional)
Output/Input
>500 megohms

Breakdown Voltage
>1000 VAC rms

OUTPUT RIPPLE
<0.1% of span
(peak to peak)

BREAKDOWN, P0WER/CIRCUITRY
>1500 VAC rms

OPERATING TEMPERATURE
14°F to 140°F
-10°C to 60°C

TEMPERATURE STABILITY
±0.02% of span/°C max

POWER
115 VAC ±10%, 50/60 Hz
(2.5 W max)

230 VAC ±10%, 50/60 Hz
(2.5 W max)

DC Power Option
24 VDC
    (limits 21-32 VDC)
    (2.5 W max)
Isolation
    DC power supply to input common:
      10 megohms

* Within specified range limits

** Compliance: The sum of all voltage drops in the output loop cannot exceed 24V at rated current (1200 ohms 20 mA).

CONNECTIONS
Power AC L1 or DC +
Power AC L2 or DC -
Input A +
Input -
Input B +
Output +
Output -

PINS
1
3
4
5
6
9
10