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Rechargeable Factory Direct Professional Grade Refrigerant And Blend Leak Detector (Johnson Controls

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Rechargeable Factory Direct Professional Grade Refrigerant And Blend Leak Detector (Johnson Controls)


This is a professional grade leak detector for use by refrigeration

and air conditioning technicians. This detector senses all CFC, HCFC,

and HFC refrigerants and blends, such as R12, R502, R22, R404a, R507

and R134a, among others. This is self-powered with a rechargeable

battery and provides both manual and automatic compensation for

background levels of refrigerant. A full line of accessories and

maintenance kits are also available, including replacement sensors,

tune-up kits, probe extensions, battery chargers, and leak vial bottles.

Features and Benefits

• Positive Ion Emission Heated Diode Sensor: Provides the most sensitivity available today, while still detecting all halogenated refrigerant gases

• Rechargeable Battery Enhances portability--no external power required

• High Quality Air Pump Supplies constant air flow to sensor so it responds quickly to leaks; also helps sensor recover quickly after exposure to refrigerant so leak can be verified

• Auto Balance Circuit Compensates for background refrigerant levels

• Visual and Audible Signal Facilitates sensing in noisy equipment rooms with 360
• visibility and piercing tone; Frequency of noise/light indicates magnitude of leak

• Exceeds SAE J1627 Moving Probe Specification Minimizes call-backs because the leak is found the first time, is verifiable, and the fix can be confirmed

• External Calibration Source Indicates when the sensor is working properly and serves as a reference point to judge leak size

Application Overview

Growing concern over the effects of certain

refrigerants on the atmosphere has generated a strong

motive to eliminate system leaks and to develop safer

refrigerants. With the RLD-H10P, you can be

confident that your instrument will provide the

sensitivity and capabilities to meet your service needs

today and for the years to come.

The RLD-H10P is intended principally as a service

•s tool. This detector has the capability to

detect small amounts of halogenated gases, including

chlorine and fluorine based refrigerants and blends.

Theory of Operation

The leak detector consists of a control unit with an

auto balancing circuit, a probe with a 4.5 ft cable, a

rechargeable battery, and a battery charger housed in

a shock resistant molded polyethylene case. The

sensor uses positive ion emission technology, which is

based on the ionization characteristics of alkali metals.

The alkali metals act as the cathode of a diode, and

the anode is heated by a DC voltage. Air from the

area being leak checked is pumped from the probe

and into the space between the cathode and anode. If

halogen gas is present, it creates an ionized current

between the cathode and the anode, which is amplified

to sound a speaker and light a neon lamp in the probe.

Sensitivity can be controlled by adjusting the current

(temperature) through the sensor.

Calibration and Verification

The leak vial may be used as often as necessary to

assure proper operation of the RLD-H10P, and to

assist in determining the size of the leak. When using

the small leak range position, a leak of HFC causing

an audible signal equal to that produced by the

leak vial has a leak rate of approximately

one-half ounce/year. When using the medium leak

range position on a CFC or HCFC system, this leak

rate would also be approximately one-half ounce/year.

Proper response during the calibration test verifies

sensitivity and operation for all three test positions.

1. Ensure that the range switch is in the small (


2. Remove the black, sticky-label disc from the cap of

the leak vial and discard. Allow a few minutes for

the leak rate to stabilize. Do not attempt to

unscrew the cap, as you may damage the bottle.

It is filled with enough refrigerant to last

approximately six months.

3. Test operation by briefly moving the probe tip over

the opening of the leak vial as if you are trying to

locate this leak. It is not necessary to hold the

probe over the leak, as this does not simulate field


The RLD-H10P should respond with an increase in

flash rate and sound, verifying operation and

indicating the location of the leak.

4. If the RLD-H10P does not respond to the leak vial,

make sure there is liquid in the bottle. If the unit

still does not respond to the leak, increase the

sensor heat slightly by turning the sensor heat

control knob 1/16th of a turn clockwise.

5. Allow a minute for the sensor to heat, then repeat

the calibration procedure.

Charging the Batteries

The RLD-H10P will run continuously for approximately

1.5 hours on a fully charged battery. When the battery

light is lit, the unit should be recharged.

IMPORTANT: The RLD-H10P contains a gel-cell

battery. To prolong the life of this

type of battery: recharge the battery

frequently (before it is fully

discharged); do not recharge the

battery for more than eight

consecutive hours. Do not allow the

battery to freeze.


Product RLD-H10P Refrigerant Leak Detector

Power Requirements 12 VDC, charger 13.5 VDC

An adaptor is available to allow unit to run off of 120 VAC power (RLD-H10-101).

Sensing Element Type Positive Ion Emission Heated Diode

Approximate Sensitivity Switch Position Alarm Sensitivity (moving probe)

Small >0.05 oz per year CFC and HCFC >0.5 oz per year HFC

Medium >0.5 oz per year CFC and HCFC >1.0 oz per year HFC

Sensor Saver >2.0 oz per year CFC and HCFC >5.0 oz per year HFC

Leak Alarm Audible alarm, visible neon lamp

Response Time Approximately 1 second

Warmup Time Approximately 2 minutes

Accuracy Meets SAE J1627 test requirements

Probe Length Approximately 4.5 ft ( 1.4 m)

Ambient Operating


32 to 104
•F (0 to 40
•C); 5-90% RH, non-condensing

Ambient Storage


14 to 140
•F (-10 to 60
•C); 5-90% RH, non-condensing

Case Rugged high-density polyethylene

Dimensions (H x W x D) 5.5 x 10.5 x 8.5 in. (140 x 267 x 216 mm)

Agency Listings UL Listed, File SA9717

The performance specifications are nominal and conform to acceptable industry standards. For application at conditions beyond these specifications,

consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products.

Replaces Part Numbers:


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