5/2004 Manual for connection and operation of the EV-94 EB page 27 of 28
Display range:
(voltage-, current and frequency-measurement)
-1999 ... 9999 Digit, initial value, terminal value and decimal point position arbitrary.
Recommended range: < 2000 Digit
Accuracy:
(at nominal temperature)
Standard-signals:
< 0.2% FS ±1Digit (from 0 – 50mV: < 0.3% FS ±1Digit)
RTD:
< 0.5% FS ±1Digit
Thermocouples:
< 0.3% FS ±1Digit (from Type S: < 0.5% FS ±1Digit)
Frequency:
< 0.2% FS ±1Digit
Point of comparison
:
±1°C ±1Digit
(at nominal temperature)
Temperature drift:
< 0.01% FS / K (from Pt100 – 0.1°C: < 0.015% FS / K)
Measuring freq.:
approx. 100 measures / sec. (standard-signal) resp.
approx. 4 measures / sec. (temperature-measurement) resp.
approx. 4 measures / sec. (frequency, rpm at f > 4 Hz) resp. accordingly f (at f < 4 Hz)
Outputs:
2 switching outputs, not electrically isolated,
Output type:
selectable: low-side, high-side or push-pull
Connection specs.:
low-side: 28V/1A; high-side: Ub/200mA
Response Time:
< 20 msec.
for standard signals
< 0.3 sec.
for temperature, frequency (f > 4 Hz)
Output-functions:
2-point, 3-point, 2-point with alarm, min-/max-alarm common or individual.
Switching points:
arbitrary
Display:
approx. 10 mm height, 4-digit red LED-display
Handling:
3 push-buttons, accessible after dismounting of the front panel or via interface
Interface:
EASY
BUS
-interface, electrically isolated
Power supply:
9 to 28 V DC
Current drain:
max. 30 mA (without switching output)
Nominal temp.:
25°C
Operating ambient:
-20 to +50°C
Relative Humidity:
0 to 80% r.H. (non condensing)
Storing temp.:
-30 to +70°C
Enclosure:
main housing:
fibre-glass-reinforced noryl
front view-panel: polycarbonat
Dimensions:
24 x 48 mm (front-panel admeasurement).
Installation depth:
approx. 65 mm (incl. Screw-in/plug-in clamps)
Panel Mounting:
via
VA-spring-clip.
Panel thickness:
available from 1 to approx. 10 mm.
Panel cut-out:
21.7+0.5 x 45+0.5 mm (H x W)
Connection:
via screw-in/plug-in clamps: 2-pol. for the interface and 9-pol for the other connections
Conductor cross-selection from 0.14 to 1.5 mm_.
Protection class:
front IP54, with optional o-rings IP65
EMC:
EA1 +A2 (appendix A, class B), additional errors: < 1% FS
When connecting long leads adequate measures against voltage surges have to be
taken.
