Fieldpiece JL3MN - Job Link System Manometer Probe Manual

Quick Start

1. Install the Fieldpiece Job Link® System app on your mobile device and sign up for an account if you're a new user.
2. Remove the single screw of the yellow battery cover and install 2 x AAA batteries.
3. Press for 1 second to power on.
4. Open Measurements in the Job Link app and favorite the probe in the tool manager.
5. Tap to zero.
6. View live measurements on your mobile device up to 1000 feet (305 meters) away.

What's Included

Job Link® System Manometer Probe
2 x AAA Batteries
Tubing with brass fitting
Bulk tubing
Gas adapter
Static pressure tip
Operator's manual
1 Year limited warranty

Description

The JL3MN Job Link® System Manometer Probe sends static pressure or gas pressure measurements directly to the Fieldpiece Job Link app up to 1000 feet (305 meters) away.

Use two JL3MN probes to do even more. Because they are untethered, you don't need long hoses to measure differential pressures. Measure and view real-time return static, supply static, and total external static pressure all at once. Use your static pressure tip with short tubing for accurate static pressure measurements. Measure real-time inlet and manifold pressures simultaneously with 2 Job Link manometers.

Mount your manometer to equipment for hands free use in tight spaces. The powerful rotating magnet holds tight even when the hose is tugged or the equipment shakes. Slide the switch and the app immediately knows which side of the system you're going to place your manometer probe.

Maintenance

CLEANING: Clean the exterior with a damp cloth. Do not use detergents or solvents. Do not apply pressurized air into the connection port.

BATTERIES: When the LED slow-blinks Red, the batteries must be replaced. Ensure the power is OFF. Remove the single screw from the yellow battery cover. Install 2 x AAA batteries. You can also monitor battery life in the Job Link app tool manager.

SENSOR CARE: Store JL3MN in a protective cover when not in use to prevent debris or foreign contaminants from entering the barb tip. Do not pressurize the probe above its max specification.

Prevent damage, do not drill holes blindly into a plenum that houses the evaporator or heat exchanger.
Do not place any part of the manometer on hot surfaces such as exhaust fumes. Doing so can cause personal injury, damage equipment, and void warranty.
Do no apply more than 11.6 psi.

Specifications

Minimum Device Requirement:
BLE 4.0 devices running iOS® 7.0 or Android™ 5.0
(Latest compatibility at www.fieldpiece.com)

Compatible Media: Dry, non-corrosive gas

Pressure Port: Tube connector for flexible tubing (4.5 to 8mm ID)

Units of Measure: inWC, mmWC, mbar, psi, Pa

Accuracy and Ranges:
inWC: ±(1.5% + 0.02) 0.00 to ± 60.00;
mmWC: ±(1.5% + 0.5) 0.0 to ± 1500.0;
mbar: ±(1.5% + 0.05) 0.00 to ± 150.00;
psi: ±(1.5% + 0.001) 0.000 to ± 2.165;
Pa: ±(1.5% + 5) 0 to ± 14930

Maximum Overload Pressure: 321.08 inWC (11.6 psi; 80.0 kPa)

Battery Type: 2 x AAA, NEDA 24A, IEC LR03

Battery Life: 150 hours typical alkaline. LED slow-blinks red when battery replacement is needed.

Auto Power Off: 2 hours (APO can be disabled)

Wireless Range: 1000 feet (305 meters) line of sight. Obstructions affect distance.

Radio Frequency: 2.4 GHz

Operating Environment: -10°F to 122°F (-23°C to 50°C) at <75% RH

Storage Temperature: -10°F to 140°F (-23°C to 60°C) at <80% RH (with batteries removed)

Temperature Coefficient: 0.1 x (specified accuracy) per 1.8°F (-10°F to 64°F, 82°F to 122°F), per 1°C (-23°C to 18°C, 28°C to 50°C)

Weight: 0.30 lbs (137 g)

US Patent: www.fieldpiece.com/patents

Operation

Press for 1 second to power ON/OFF. Tap to zero measurements.

LED Color Indications

Green slow blink: normal operation
Red slow blink: batteries need to be replaced

Supply or Return Side Switch

The Job Link® System app knows which side you have selected for each probe. Select P1 or P2 and place it on the system appropriately.

Static Pressure

Static pressure testing ensures if the equipment is operating within factory specifications.

1. Zero your JL3MN while in ambient pressure with any tubing/probes attached before taking measurements. For measurements less than 2 inWC, take reading within 1 minute after zeroing for best accuracy.
2. Use the included static pressure tip when checking static pressure in an airflow stream.
   NOTE: The red arrow on the static probes should point toward the airflow of the stream.
3. Place a JL3MN before and after the filter to measure your filter pressure drop ( ).
4. Place a JL3MN before and after the coil to measure your coil pressure drop ( ).
5. Place a JL3MN in the inlet and outlet air of the equipment to measure your total external static pressure ( ). Check with manufacturer to determine TESP test locations.
   NOTE: If you are in an environment where the temperature is noticeably changing while you are taking your reading, it is advised that you disconnect the probe from the tubing and ZERO it relative to the ambient air before each reading.
   

Gas Pressure

Prevent symptoms like rough starts or overheating your heat exchanger by checking your gas pressure.

1. See manufacturer's specification for target inlet and outlet fuel or gas pressures.
2. Shut off main gas supply power to furnace.
3. Zero your JL3MN while at ambient pressure with tubing attached before taking measurements.
4. Remove outlet pressure tap screw and insert the brass screw fitting of the hose into the outlet pressure tap of the gas regulator.
   

NOTE:
Some pressure taps have a 5/16'' boss instead of an insert screw. In this case, use the included 5/16'' adapter tube. Loosen the tap screw about 1 revolution and slide the tube over the boss.

6. If you suspect high or low inlet pressure to the regulator, connect the JL3MN to the inlet tap.
7. Put furnace into operation and begin to take measurements.

Auto Power Off (APO)

The probe will automatically power off after 2 hours. To disable APO until powered off, while power is on tap twice. The LED will briefly blink red. To enable APO, while power is on tap twice. The LED will briefly shine red.