Additel 912 User Manual

Warningsand cautions

Low pressure gauges can very easily be over pressured if not careful.
Please take caution when applying pressures.
Do not exceed the safety pressure limit 90 psi (6 bar).
This test pump is not designed to be used in explosive or corrosive
environments.
Do not switch between pressure and vacuum mode under pressure.
Over tightening connectors may cause damage.
Store the pump in the dry and non-corrosive environments.
Additel is not liable for any safety problems or damages caused by
misuse or incorrect operation.
All moisture and contaminants should be cleaned out of the liquid
isolator before creating a vacuum. This is accomplished by venting
the pump when at high pressure.
For the least risk in contamination of the reference gauge, the DUT
should be installed to the pressure port which is closest to the vent
valve.

Specification

Low Pressure Test Pump User's Manual

Configuration & Air routine

5

3

1

2

7

4

6

9

ADT912

[Version number:1405V12]

1 - Quick connector

8

2 - Vent valve

( clockwise to close/ counterclockwise to open )

3 - Fine adjust handle

( clockwise to increase pressure )

4 - Quick connector
5 - Pressure/vacuum (P/V) selector

(Positive pressure: pull it out; Vacuum: push it in )

6 - Safety bolt pin

( use it to ensure safety )

7 - Isolation valve

(isolates the calibration volumn from pressurizing system)

8 - Hand pump
9 - Main adjust handle

( clockwise to increase pressure )

Pressure range:

Temperature:

Humidity:

Pressure Resolution:

Safety pressure:

Pressure media:

Size:

Height: 5.51'' ( 140 mm );

Base: 10 10.16'' ( 258 mm )

Weight:

6.2 lb ( 2.8 kg )

95% vacuum to 60 psi ( 4 bar )

0~50

℃

< 95%RH

0.1 Pa ( 0.001 mbar )

<

90 psi (6 bar)

Air

.75'' ( 273 mm ) x

Air routine

7

5

8

2

3

9

Troubleshooting

Problem

Hand pump will not generate pressure

It is difficult to increase pressure

Hard to use fine adjustment handle

It is difficult to turn the quick connector

Cause

The isolation valve is not open.

A. Release valve is not closed.

B. The O-ring seal is loose or damaged.

C. P/V selector is in the wrong position

A. The isolation valve is not closed

B. The gauges are not tightened

C. The O-ring seal is damaged.

D. The thread surface is not smooth

E. The connector type is mismatched to the gauge pressure port

F. Dust or contaminants are blocking the

pressure flow

A. Too much force was previously applied

B. The threads have no lubrication

.

.

.

.

.

.

.

Solution

Open the isolation valve

Close the release valve.

Replace the O ring seal

:/ : / .

Pressure pull the P V selector out; Vacuum push the P V selector in

Close the isolation valve

Tighten the reference gauge or the gauge under test

Replace the O ring seal

Use Teflon tape on the thread and turn it in tight.

.

Use the correct adapter

Repeat pressurizing the pump several times and then suddenly vent

it which will push any contaminants out.

Secure the quick connection with less force

Apply lubrication to the threads

.

-.

.

.

-.

.

.

.

Basic Operation

DIGITALPRESSURE CALIBRATOR

Units

open

Units

0255075100

DIGITALPRESSURE CALIBRATOR

0255075100

k

A

k

A

0

0

open

Zeroing should be operated
under this condition only

Vent

P

Pressure Gauge

ressure

M

Connection

DIGITALPRESSURE CALIBRATOR

Units

SW V mA COM 24V

0255075100

flexible hose

Increasing pressure

k

A

4

fine adjust

0

Pressure GaugePressure Gauge

0

3

main adjust

0

M

0

0

operate it to approach

①

desired pressure

SW V mA COM 24V

Pressure Gauge

k

dial gauge

B

DIGITALPRESSURE CALIBRATOR

Units

0

G

aug

e

0

0

0255075100

5

close

()Do not over-tight

pressure switch pressure transmitter

k

A

2

set it to the mid

position of its travel

Pre-pressure

0

0

Pressure Gauge

M

0

0

0

push the security bolt pin in

①

3

set it to the suitable

C

open

④

position

2

A

D

close

.

Repeat pressurizing

DIGITALPRESSURE CALIBRATOR

Units

0255075100

k

A

5

fine adjust

0

0

Increasing vacuum pressure

0.06

DIGITALPRESSURE CALIBRATOR

Units

0255075100

k

A

4

fine adjust

Vacuum Gauge

.

008.008

-0.1

G

re

u

ss

re

P

Pressure Gauge

M

0.04

0

e

g

u

a

0

0

4

main adjust

0.02

0

1

3

main adjust

E

operate it to approach

2

desired pressure

close

3

open

①

H

operate it to approach
the desired value

2

close

Decreasing pressure

DIGITALPRESSURE CALIBRATOR

k

Units

A

0255075100

3

fine adjust

1

open it slowly to approach
the desired value, and close!

Repeat vacuum pressure

DIGITALPRESSURE CALIBRATOR

k

Units

A

0255075100

5

fine adjust

F

Vacuum preparation

G

Vent firstly.

0

0

Pressure Gauge

M

0

0

0

2

main adjust

I

0.04

0.06

Vacuum Gauge

a

0.02

.

008.008

0

-0.1

operate it to approach

2

the desired value

3

close

open

①

4

main adjust

DIGITALPRESSURE CALIBRATOR

k

Units

A

0255075100

4

set it to the mid

position of its travel

push in, select the

5

close

（but it must be open
switching the P/V selector）

vacuum mode

2

Decreasing vacuum pressures

DIGITALPRESSURE CALIBRATOR

k

Units

A

0255075100

3

fine adjust

1

open it slowly to approach
the desired value, and close!

.

008.008

-0.1

1

.

008.008

-0.1

0.06

Vacuum Gauge

pull out

0.06

Vacuum GaugeVacuum Gauge

0.04

MPa

0.02

0

3

set it to the

suitable position

0.04

0.02

0

2

main adjust

J

Remark: A Additel has made a concerted effort to provide complete and current information for the proper use of the equipment. The product

specifications and other information contained this manual are subject to change without notice.

B:: Above pictures are just for reference.