E725 Microprocessor Based Digital Indicator / Panel Meter

LVDT amplifier
Strain gauge transducer amplifier
Digital display module
Limit trips
Serial output
Voltage / 4-20mA output


   Data sheet (212kb)
Signal conditioning is required where the output of a transducer needs to be boosted or changed into a form suitable for the monitor or logging device which will be used. Our digital display units have a built-in monitor device in the form of the digital display as well as analogue output.

The E725 amplifier unit additionally has a serial output and limit trips with optional relays. Features such as auto-zero and MAX, MIN and TIR store are features which are also available with most versions of this unit.

A very wide range of gain adjustment ensures that our amplifiers are compatible with the vast majority of LVDT and strain gauge sensors available from any manufacturer.

Supply voltage
  Supply voltage Operating temperature range Total weight
Ac supply version 115/230 ( +5/-15%), 50/60Hz, 7VA 14F to 113F 1.1lb
Dc supply version 5V(+50%, -10%) /12/24V (+50%, -25%) dc 7W 14F to 131F 15.2oz

Input Card Type
Input Card Type AC DC1 DC2 DC3
Compatible with Any standard RDP LVDT (without integral electronics).
Most LVDTs from any manufacturer.
Most full bridge strain gauge transducers
DCTH, Sensagap & MCL
Most amplified transducers from any manufacturer
Most 4-20mA transducers D2 & LDC
Transducer excitation 1.1V rms , 5kHz 30mA 3V to 10V & 15V, 100mA 23V, 100mA 6V, 100mA
Signal input range 15mV to 4V 3mV to 10V 3mV to 10V, 4-20mA 3mV to 10V
Electrical output bandwidth 0 to 250Hz 0 to 300Hz 0 to 300Hz 0 to 300Hz
Input impedance 100k Ohms 100M Ohms 100M Ohms 100M Ohms
Linearity error 0.05% F.S. 0.02% F.S. 0.02% F.S. 0.02% F.S.

Option card (none or one may be selected)
Option code Description
2AC Second input of type AC Transducers must have sensitivity within 15% of each other and display the same full scale value
2DC1 Second input of typeDC1
2DC2 Second input of type DC2
2DC3 Second input of type DC3
FM Fast peak catcher card
R Relay card (Mechanical) Number of channels = 4 Operation time = 20ms Contact rating = 150V dc/125V ac, 30W/60VA
FR Relay card (Mechanical) Number of channels = 2 Operation time = 5ms Contact rating = 150V dc/125V ac, 30W/60VA
RS Relay card (Solid-state) Number of channels = 4 Operation time = 20ms Contact rating = 200V dc/130V ac, 200mA
FRS Relay card (Solid-state) Number of channels = 2 Operation time = 5ms Contact rating = 200V dc/130V ac, 200mA

Serial output
Standard = RS232
Optional = RS485

Analogue output (This unit has both Voltage and 4-20mA outputs)
Input Card Type F.S. (-) 0 F.S. (+) Output ripple (peak-to-peak) Approximate zero adjustment range
AC Standard +10V/20mA +5V/12mA 0V/4mA 5mV / 20uA (typical) 1.5V
AC Special option 11 +10V/20mA 0v/4mA -10V
DC Standard +10V/20mA 0V/4mA -10V 2mV / 30uA (typical)
DC Special option 12 +10V/20mA +5V/12mA 0v/4mA

Limit trips (standard)
E725 TTL output Number of channels = 4 Operation time = 15ms Maximum source/sink current = 13mA

Other features
Description DC1, DC2, DC3 & AC 2DC1, 2DC2, 2DC3 & 2AC FM R/RS FR/FRS
3 modes may be programmed each with a different gain and offset from the primary channel
A, B, (A+B)/2, A-B
Multi-point calibration, up to 11 calibration points to improve linearity   

PMHW 3.62''
PMHH 1.73''
PMBW 3.80''
PMBH 1.91''
PMD 4.88''
PMDC 6.85''
Panel cut-out 3.66'' X 1.77''
Part number structure (example, E725-230-DC1-R-0-0)

E725 Supply voltage Input Card Type Option card (none or one may be selected) Serial output Special option
5 =5Vdc
12 =12Vdc
24 =24Vdc
105 =105Vac
115 =115Vac
230 =230Vac
AC Any standard RDP LVDT (without integral electronics).
Most LVDTs from any manufacturer.
DC1 Most full bridge strain gauge transducers
DCTH, Sensagap & MCL
Most amplified transducers from any manufacturer
DC2 Most 4-20mA transducers
DC3 D2 & LDC
0 =None
2AC =Second input of type AC
2DC1 =Second input of type DC1
2DC2 =Second input of type DC2
2DC3 =Second input of type DC3
FM =Fast peak catcher card
R =Relay card (Mechanical), Number of channels = 4, Operation time = 20ms
FR =Relay card (Mechanical), Number of channels = 2, Operation time = 5ms
RS =Relay card (Solid-state), Number of channels = 4, Operation time = 20ms
FRS =Relay card (Solid-state), Number of channels = 2, Operation time = 5ms
0 =RS232
1 =RS485
0 0

All dimensions and specifications are nominal. www.rdpe.com/us/e725.htm 20141105
Due to our policy of on-going development, specifications may change without notice. Any modification may affect some or all of the specifications for our equipment.
 

RDP Electrosense
2216 Pottstown Pike
Pottstown, PA 19465
USA
Tel: 610-469-0850
Tel: 800-334-5838
Fax: 610-469-0852
Email: info@rdpe.com

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