Owner's manual

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Operating Instructions

CALMASTER

InHouse Multimeter Calibration TestBox

Ensure your multimeters are always deemed accurate with

CALMASTER. This useful bench tester checks that meter

ranges are to calibration standard. It’s quick and easy to use

- and reduces the number of meters sent away unnecessarily

for calibration.

Meters Ltd

www.actmeters.com

+44(0)1744 886660

CALIBRATED METER CALIBRATED METER METER UNDER TEST CALIBRATED METER

METER UNDER TEST

CALIBRATED

METER

UNDER TEST

DCV BOTH

METERS

ISOLATED AC OUTPUT

AC VOLT ADJUST FUSE (5OmA MAX)

POWER ON

RESISTANCE: UP TO 1OOk

DC VOLTS O - 36VDC MAX

SWITCH TO DC

1O/2OA RANGE

1OOmA

1OmA

1mA

METER UNDER TEST

DC CURRENT RANGES

MIN

MIN MAXMAX

COARSE

ACT CALMASTER

Ω

MIN

FINE

MAX

CALINST/0513

ACT Meters Ltd

The Old Smithy

Church Road

Rainford

Merseyside

WA11 8HD

United Kingdom

w: www.actmeters.com

e: technical@actmeters.com

t: +44(0)1744 886660

f: +44(0)1744 886661

Summary of content (4 pages)

PAGE 1
Operating Instructions CALMASTER InHouse Multimeter Calibration TestBox CALIBRATED METER CALIBRATED METER METER UNDER TEST CALIBRATED METER Ω METER UNDER TEST CALIBRATED DCV BOTH METER METERS 1A Ω METER UNDER TEST SWITCH TO DC 1O/2OA RANGE 1OOmA ISOLATED AC OUTPUT AC VOLT ADJUST ACT CALMASTER 1OmA RESISTANCE: UP TO 1OOk DC VOLTS O - 36VDC MAX FUSE (5OmA MAX) POWER ON 1mA MIN MIN COARSE MAX MIN FINE MAX METER UNDER TEST DC CURRENT RANGES Ensure your multimeters are always deemed ac
PAGE 2
CALMASTER CALMASTER Important Information Notes CALMASTER works in conjunction with your own calibrated multimeter. It quickly compares accuracy between the calibrated multimeter and meter under test. It allows you to test and verify the various ranges for AC/DC Voltage, Resistance and DC Current. Readings within ±5% of the calibrated multimeter will prove the meter under test is deemed accurate to BS ISO9001 standards.
PAGE 3
CALMASTER CALMASTER Operating Instructions Operating Instructions FIRST STEPS Testing Resistance 1. Connect power lead between CALMASTER and suitable AC mains supply 2. Switch on AC supply and confirm that CALMASTER red neon is lit 3. Turn all CALMASTER controls to the fully anti-clockwise position 4. IMPORTANT: Remove AC mains lead when testing resistance to ensure stable resistance reading 1. Connect ‘Calibrated Meter’ and ‘Meter Under Test’ to the CALMASTER middle sockets 2.
PAGE 4
CALMASTER CALMASTER Operating Instructions Operating Instructions Testing DC Current 1. Connect ‘Calibrated Meter’ and ‘Meter Under Test’ to the CALMASTER right sockets 2. Switch both meter to ‘DC mA’ range 3. Confirm that the ‘Meter Under Test’ mA reading is within ±5% of the reading displayed on the ‘Calibrated Meter’ 4. Log readings obtained for calibration records 5. Repeat above on all DC current ranges on the meters WARNING: ON 10AMP RANGE MAX TEST TIME 30 SECONDS Contents First Steps ...........