Sierra Not available instruction manual Maintenance, Display Adjustment

Models: Not available

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Series 900 Single & Dual Instruction Manual

Normally each System Electronics is carefully set-up at Sierra Instruments and needs no maintenance. Individual transducers may need periodic maintenance. Refer to transducer manuals for the proper procedure.

The full scale value of the display can be adjusted using the Display Adjustment Potentiometers, R49 for Channel 1 and R48 for Channel 2. To adjust the span valve of the display, connect a precision 5 VDC input to pin 3 or a 20 mA input to pin 9 on the 20 pin connector for the appropriate channel. Adjust the correspond- ing potentiometer to change the span to the desired full scale value.

The location of the decimal point can be changed using jumpers located at J5 – J7. There is one set of jumper connectors for each channel. The following identifies the jumper number and decimal point location:

J – 7

1 digit

(1xx,x)

J – 6

2 digit

(1x,xx)

J – 5

3 digit

(1,xxx)

5 MAINTENANCE

5.1 Display Adjustment

The Zen and Span Adjustment Potentiometers (R12 and R16) are

5.2

factory adjustments used to set the individual meter to the system

Zen and Span Adjusted

electronics. Sierra recommends that these potentiometers not be

 

adjusted in the field. Consult with Sierra’s Customer Service

 

Department at (408) 373-0200 for assistance.

 

In the unlikely event of System Electronics malfunction, please

5.3

contact our sales engineers or customer service at (800) 866-0200

Factory Service

outside California, or (408) 373-0200 inside California. Ship all

 

systems to:

 

Sierra Instruments, Inc.

 

5 Harris Court, Bldg. L

 

Monterey, CA 93940

 

Attention: Service Department

 

Be sure to include complete return shipping instructions. IT IS

 

NOT POSSIBLE TO DELIVER PARCELS TO A POST OF-

 

FICE BOX.

 

In order to minimize the possibility of damage in shipment, the

 

system should be shipped in its original packing carton. If the

 

original carton is not available, follow this packing procedure:

 

1) place bail in front of the unit to protect the front panel;

 

2) leave rear panel header latches open;

 

3) pad all sides.

 

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Sierra Not available instruction manual Maintenance, Display Adjustment