User Manual

THIS TEST GAUGE IS PROVIDED WITH A MICROSPAN™ ADJUSTMENT
TO SIMPLIFY CALIBRATION. THE FLOW CHART BELOW OUTLINES THE
R
ECOMMENDED CALIBRATION PROCEDURE
Installation and Maintenance Instructions for
ASHCROFT
®
Type 1082 Test Gauge
Calibration Procedure – Pressure Range
CENTER DIAL
OVER PINION
CHECK
ACCURACY
AT 0-25-50-75-100%
MICRO
SPAN
COARSE
SPAN
GO TO
0%
MICROMETER
SPAN
COARSE
SPAN
>0.2 <1.5%
>1.5%
<0.2%
>0.2<1.5%
SET POINTER
AT 0%
GO TO
100%
CHECK
ACCURACY
>0.2<1.5%
TEMPERATURE
COMPENSATOR
< – LESS THAN
> – GREATER THAN
MICROSPAN
ADJUSTMENT
–TIGHTEN SCREW TO
INCREASE SPAN
1 TURN – APPROX.
1
⁄2%
COARSE SPAN
ADJUSTMENT
–LOOSEN TWO SCREWS
–MOVE SLIDE INWARD
TO INCREASE SPAN
(.004 IN. – APPROX. 1%)
–TIGHTEN TWO SCREWS
>1.5%
>1.5%
<0.2%
<0.2%
GO TO
100%
CHECK
ACCURACY
GO TO
0%
ROTATE
MOVEMENT
SET POINTER
AT 0%
GO TO
50%
CHECK
ACCURACY
MICRO
SPAN
>0.2%
COARSE
LINEARITY
NOTE
<0.2%
SET POINTER
AT 100%
GO TO
0%
CHECK
ACCURACY
COARSE
SPAN
<0.2%
>1.5%
SET POINTER
AT 100%
GO TO
0%
CHECK
ACCURACY
ROTATE MOVEMENT
COUNTER-CLOCKWISE
TO REDUCE READING
AT MIDSCALE
© Ashcroft Inc., 250 E. Main St., Stratford, CT 06614-5145, Tel: [phone], Fax: [phone], www.ashcroft.com
All sales subject to standard terms and conditions of sale.
I&M008-10082 11/01 RevB (250-2917-4) AMR 10/07
Fi g. 2
18