Specifications

RUSKA 7250, 7250i, 7250xi & 7250LP
Users Manual
3-2
Table 3-1. General Specifications and Parameters
Parameter Value Model
Operating Humidity 5–95%RH, noncondensing all
Storage Humidity none* all
Operating Temperature 18 – 36°C all
Storage Temperature -20 to 70°C all
Electrical Power 100 – 120/220 – 240 VAC all
Power Consumption 150 W all
Warm-up Period < 3 hrs all
*If there is any condensation when storing the Calibrator, it must be
thoroughly dried before power is applied. It is also recommended to connect
the reference port to the test port and evacuating these simultaneously to
remove any moisture from the sensor.
Cautions
The following cautions should be heeded at all times to ensure safe operation of the
Calibrator.
WX Warning
Never operate the Calibrator with the cover removed. The power
supply has internal voltages near 400 volts.
Never apply more than 120% of the Calibrator’s full scale as a pressure supply. Pressure
supply must be regulated and meet all criteria as stated in Appendix A of this manual.
Never apply more than 110% of the Calibrator’s full scale to the test port. Never try to
control while a pressure source is connected to the test port.
W Caution
Do not expose the instrument to thermal and mechanical shock,
or vibration. This may affect performance and require
re-zeroing.
(See Chapter 1, Safety Information.)
Powering Up the Calibrator
First, plug the power cord supplied with the Calibrator into the power connector on the
Calibrator’s back panel.
W Caution
Grounding for the Calibrator is provided through the power
cord.
Next, plug the power cord into a receptacle rated for any AC voltage between 90 and 260
volts. If a different power cord is necessary for your receptacle, consult Table 1-1 for
available power cords.
Finally, turn on the Calibrator by toggling the power switch on the back panel. When the
Measure screen appears on the display, the front panel will be fully operational.