Fieldpiece SVG2 - Digital Vacuum Micron Gauge User Manual

General, Vacuum pressure, Warranty

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General

Temperature coefficient: 0.1 x (specified accura-

cy) per °C from 0°C to 18°C and 28°C to 50°C
(32°F to 64°F and 82°F to 122°F)

Battery: Single standard 9-volt battery, NEDA

1604, JIS 006P, IEC 6F22.

Battery life: 6 hours continuity typical.
Operating environment: 32ºF (0°C) to 122ºF

(50°C) at <75%RH

Storage environment: -4ºF (-20°C) to 140ºF

(60°C) at <80%RH with battery removed from
meter.

Overrange: “OL” or “-OL” is displayed.
Auto-off power: 5 minutes only when reading is

above 70,000 microns.

Low battery: symbol is displayed.
Response time: 0.5 seconds

Vacuum pressure

Units of measure: microns (of mercury)
Connector type: Standard 1/4” male flared fitting.

“T” fitting included.

Resolution: 1.0 micron (of mercury)
Accuracy: ±10% or ±10 microns( 50 to 1000

microns) at 73°F(23°C) ± 10°F(5°C), <90%RH

Measurement range: 50 to 2000 microns (of mer-

cury)

Maximum overpressure: 500psi (3500kPa)

Warranty

The product is warranted to the original purchas-

er against defects in material or workmanship for a
period of one (1) year from the date of purchase.
During the warranty period, Fieldpiece Instruments
will, at its option, replace or repair the defective unit.

This warranty does not apply to defects resulting

from abuse, neglect, accident, unauthorized repair,
alteration, or unreasonable use of the instrument.
Any implied warranty arising out of the sale of
Fieldpiece's products including but not limited to
implied warranties of merchantability, and fitness for
purpose, are limited to the above. Fieldpiece shall
not be liable for incidental or consequential dam-
ages.

Service

Return any defective SVG2 to Fieldpiece for war-

ranty service along with proof of purchase. Contact
Fieldpiece for out of warranty repair charges.

Cleaning the Sensor

Drop isopropyl (rubbing) alcohol into the opening

of the SVG2 sensor and pour it out. Leave the sen-
sor opening uncovered long enough to completely
evaporate all of the residual alcohol. Do not use an
object such as a cotton swab to clean the sensor,
you may cause damage to the sensor.

Standalone
Vacuum Gauge
Model: SVG2

OPERATOR’S MANUAL

Description

The SVG2 will allow the measurement of a deep

vacuum. The reason for evacuating a HVACR sys-
tem to such deep levels is to remove all contami-
nants (mainly moisture).

The SVG2 is a portable standalone vacuum

gauge. The SVG2 is capable of measuring a deep
vacuum from 50 to 2000 microns. The SVG2 comes
in a rugged rubber boot. The SVG2 also has an
alarm that can alert you when a given vacuum is
reached.

The alarm can be set for either a high or low tar-

get and has both audio and visual indicators. The
alarm target is displayed in the lower screen when
you press the SET button. The ALM button toggles
between Hi alarm, Lo alarm, and no alarm. The
LCD also displays whether the target is a high or a
low. The SVG2 also has a low battery indicator. The
SVG2 also displays “OL” when reading is above
2000 microns.

Applications

Measure the vacuum on a refrigeration system

when evacuating refrigerant. The digital readout
shows even small drops in pressure. While target
vacuum pressures vary, the technician typically
wants a vacuum between 300 and 400 microns for
small systems and 700 for large systems.

Operation

LCD display:
This meter is equipped with a dual-data display,

main (upper) display displays the measurement
of vacuum (in microns of mercury).

The secondary (lower) display indicates the rate of

change of the reading by using the following
designations:

: When the pressure is increasing, the

LCD will flash at a frequency relative to the rate
of pressure increase.

: When the pressure is decreasing, the

LCD will blink at a frequency relative to the rate
of pressure decrease.

: When the rate of change in pressure is

zero or near zero, the

will appear

without flashing.

Alarm function:
1. Press the ALM (alarm) key to toggle between

the three different alarm settings, ALM Hi, ALM
Lo and ALM Off.

2. In the ALM Off mode, press the SET key to dis-

play the target Hi or Lo alarm. Pressing the
and

arrows will change the target. Press

the SET key again to exit to main display.

3. If the ALM Hi is activated, the meter will have an

audible and visual alarm when the vacuum goes
above the ALM Hi target. If the ALM Lo is acti-
vated, the meter will have an audible and visual
alarm when the vacuum goes below the ALM Lo

target. The frequency (tone) of the ALM Hi is
higher than the ALM Lo.

4. Default ALM Hi and ALM Lo are 300 and 50

respectively.

The high vacuum pump procedure:
1. Follow all manufacturer’s evacuation procedures

over those in this manual in regards to specifi-
cations on how to evacuate systems.

2. Note: larger systems may take much longer to

reach the levels below and a different evacua-
tion method might be preferred.

3. Pull vacuum with a low-vacuum pump (50 to 80

torr or 26 to 27 inches of mercury vacuum) and
recover refrigerant as necessary.

4. Switch to a High vacuum pump
5. Connect the SVG2 with the included “T” fitting

between the vacuum pump and the system.

6. Set your target Lo alarm (typically in the 50

micron range).

7. Draw a vacuum on the system
8. Once you have reached the low alarm, set your

target Hi alarm (typically 300 microns) .

9. Power off the vacuum pump and close valves.

If it takes more than three minutes for the vacu-
um to reach 300 microns it is likely that the sys-
tem is dry and evacuated.

Battery check function:

The % of the SVG2’s battery charge can be
checked by holding down the SET button for
one second.

T2

T

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

ALM

ON/OFF

SET

SVG2

PRESS FOR 1 SECOND

BATTERY

CHECK

Vacuum

Gauge
Measures

vacuum in

microns of

mercury.

STABLE

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

T2

ALM

ON/OFF

SET

SVG2

PRESS FOR 1 SECOND

BATTERY

CHECK

Vacuum

Gauge

Measures

vacuum in

microns of

mercury.

STABLE

SVG2 pulling a vacuum

on an A/C system.

Service Valve

on A/C

Vacuum Pump

v11

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