A790 TPI (Test Products Int), A790 Datasheet - Page 6

• Manufacturer Part Number: A790
• Description: ANALOG OIL PRESSURE GAUGE
• Manufacturer: TPI (Test Products Int)
• Type: Manometerr

Specifications of A790

• Style: Handheld
• Display Type: Scale
• Function: Pressure
• Ranging: Auto
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Display Digits: -
• Display Count: -
• Features: -

TPI Analyzer Care
The combustion analyzers use state of the art electrochemical sensors. This sensor technology provides the longest lasting, most accurate and
reliable means for performing combustion tests. The sensors in will need to be replaced periodically and calibration is recommended once every year.
Tech Tip:
amount of air available for combustion therefore reducing efficiency. Obstructions in the flue block
exhaust gases and alter the air mixture in the combustion chamber which reduces efficiency. Air
leaks in the combustion chamber also alter the mixture causing decreased efficiency.
Tech Tip:
gas fired equipment is through gas manifold pressure adjustment. Confirm manifold pressures
are within manufacturers specifications prior to performing a combustion test. Once manifold
pressures are within limits a combustion test can be performed to provide information regarding
any adjustments that may be needed.
Tech Tip:
10,000. The formula to convert ppm to percent is: % = ppm / 10,000.
Tech Tip:
(-) port is subtracted from the pressure applied to the (+) port. Examples of pressures being
measured:
Always keep the battery of your analyzer charged / fresh so power is constantly being supplied to your sensors.
Always use the mini pump filter when testing flue gases and periodically check and replace the filter as needed.
Always make sure the in-line filter / water trap is installed properly and periodically check and replace the filter as needed.
Always remove water or condensation from the inside of the in-line filter / water trap assembly prior to performing tests.
Always use the optional oil filter (p/n A773) when performing tests on oil burning equipment.
TP-1
Use for plugging combustion efficiency test holes in high efficiency furnaces. Material:
High density polythlene Temperature: up to 212°C 1/8” NPT thread 10 per pack
(+) port = 10"H2O, (-) port = Not Connected, Displayed reading =10"H2O
(+) port = 10"H2O, (-) port = 5"H2O, Displayed reading = 5"H2O
(+) port = Not Connected, (-) port = 10"H2O, Displayed reading = -10"H2O
A740
IR printer for use with 708, 712, and 714, Combustion Efficiency Analyzers
A788
Included with test pump:
• A789 Smoke pump tester
A746
Replacement thermal paper roll for the A740 (2 pack)
A612
Protective rubber boot with tilt stand for the following meters: 610, 615,
620, and 625.
The primary way to affect change in combustion efficiency when working with modern
A605
Ideal for use on setting pressure switches
10,000ppm is equal to 1%. The formula to convert percent to ppm is: ppm = %gas X
The 709, 712, and 714 incorporate a differential manometer. Pressure applied to the
Several factors affect combustion efficiency. Dirty or clogged air filters reduce the
Threaded Pipe Plug
IR Printer
Smoke Test Pump
Protective Rubber Boot
Replacement Paper Roll
Combustion Analyzer Care, FAQs, & Tech Tips
Universal T Fitting
Analyzer Tech Tips
• Smoke pump test paper
• Smoke scale
PAGE 6 • COMBUSTION BROCHURE
Accessories
A772
the 712 to communicate with a PC
PC Software for 712
A115
Use the A115 to check thermocouples in series with the furnace running
A761
Replacement oxygen sensor for the 708 & 712 combustion analyzers. Price
includes installation and calibration at TPI
A795
For use with condensing boilers
A020
A762
Replacement watertrap for the 707, 708, and 712 combustion analyzers. Cludes
one A762F filter element
Use to check flame safeguard current on controls with a 3.5mm test jack.
Thermocouple Adapter
Replacement Oxygen Sensor
Watertrap / Filter Assembly
FLAME CURRENT LEAD SET
Replacement Watertrap
Allows
When should I use the optional A773 oil
filter?
If your analyzer is used in an oil fuel
application the A773 filter should be used.
This filter does not have to be removed for
other fuel types.
Should I set my analyzer to net or gross
efficiency?
Gross efficiency is the correct choice for
applications in the United States.
Can I use any of the TPI analyzers to test for
the presence of combustible gas in the flue?
Yes, the 712 has the ability to test for
combustible gases in the flue.
Can I log and send test data to a computer?
Yes, the 712 and 714 have the ability to
communicate to a computer by using the
optional A767 infrared adapter.
Can I test for CO in ambient air?
Yes, the 708, 709, 712, and 714 can all test for
carbon monoxide in ambient air.
Do any of the TPI analyzers have a built in
manometer?
Yes, the 709, 712, and 714 have
built in differential manometers.
FAQ
ANALYZER
A767
Allows the 712 to communicate with a PC
Adapter