Siemens Pacemaker UM344-2 Bedienungsanleitung PDF herunterladen (Seite 113)

UM344-2 CALIBRATION AND MAINTENANCE

September 1995

2. Determine millivolt values for thermocouple or mV input.

• Thermocouple Type Input: Consult user supplied TC millivolt vs temperature table and record the

millivolt values corresponding to the Zero and Full Scale temperatures.

• mV Type Input: Consult user supplied data and record the millivolts equivalent to the Zero and Full

Scale points.

3. Set millivolt source to voltage corresponding to Zero Scale value. Adjust source to three decimal

places as read from the digital voltmeter (DVM) connected across millivolt source.

4. Apply power.

5. Read indicated Zero Scale value. Perform either A) or B) and compare the reading to the

specifications in step C).

A) If an optional Digital Meter is installed, read the indicated Zero Scale value.

B) If a Digital Meter is not installed, perform the following:

1) From the MXC, execute the FIND XMTR program.

2) When the MXC finds the transmitter, press the dedicated TRANS VAR'S key on the MXC

and read the displayed value.

C) Accuracy specifications:

TC input ........................... Equal to or less than:

+/-0.2° F type T

+/-0.3° F type E, J

+/-0.4° F type K,R,S,B,N

Equal to or less than +/-0.02% of span. The higher value will be the

accuracy tolerance.

mV input (narrow range) ... Equal to or less than +/-15 microvolts

mV input (wide range) ....... Equal to or less than +/-30 microvolts

Equal to or less than +/-0.02% of span. The higher value will be the

accuracy tolerance.

6. Set millivolt source to voltage corresponding to Full Scale value and check accuracy of indication

against specifications listed in step 5.

If calibration is required, retain test set-up and go to Section 6.1.4.2.

1 2 ... 108 109 110 111 112 113 114 115 116 117 118 ... 182 183

Keine Kommentare

Siemens Pacemaker UM344-2 Bedienungsanleitung Seite 113