Cooper DCM 495 User Manual

DCM 495 USER’S GUIDE

Supply Voltage:

18 - 32 VDC

Excitation Voltage to Sensor:

2.5, 5 or 10 VDC (User selectable)

Output Voltage Range:

+/-10 volts @ 2 mA

Frequency Response (1-3db):

DC – 5000 Hz

Signal to Noise Ratio:

65 dB

Zero Adjustment Range:

+/- 25% course, +/- 10% fine

Span Adjustment Range:

Switch Selectable (1 to 32 mV/V), +/- 25% fine adjustment

Short Circuit Protected:

(+) Output to (–) Output/Common

Environment Protection:

IP-66 or NEMA 4

Shunt Calibration:

Solid State Relay

Linearity:

+/- 0.02% of Full Scale

Chapter 1 - Introduction

1.1 General

The Cooper DCM 495 is a universal in-line amplifier that can be used in applications where a direct high
level output from a transducer is not possible due to a harsh environment or because of the small size of
the transducer (e.g. miniatures). The user-programmable DCM 495 is contained in a rigid NEMA-4 plastic
box. It supplies a highly regulated bridge excitation voltage to the transducer and converts it into a +/­10VDC output signal. The DCM 495 has three selectable excitation voltages, a programmable gain setting
and a wide adjustment on zero. Quick calibration is available through a buffered solid state shunt calibration
feature. Typical advantages like increased signal-to-noise ratio, elimination of voltage drop effects on
excitation and signals into low-impedance data systems are ensured by the careful design of the DCM

495.

1.2 Specifications

CF 52A 1 Mar 2014

1.3 Layout

Figure 1-1

Chapter 2 - Installation/Setup

2.1 Wiring

WARNING: CONNECT ALL WIRES PRIOR TO APPLYING POWER TO
THE AMPLIFIER. FAILING TO DO SO CAN RESULT IN DAMAGE TO THE
AMPLIFIER!

Use an 18-32 V single voltage supply to power the DCM 495. Strip the cables back 2-3 inches with the
wires stripped and tinned ½”. Connect as shown in the following diagrams: Figure 2-1 shows the
connection between the transducer and the DCM 495 and Figure 2-2 shows the power supply connection
to the inline amplifier and the signal connection to a data system readout. Observe the wiring code of the
transducer to ensure proper connection. Connect the stripped and tinned wires to the terminal block inside
the DCM 495 by pressing the orange levers and inserting the wire inside the hole next to the lever.

CF 52A 2 Mar 2014