Bacharach PGM-IR 3015-5148, PGM-IR 3015-5696, PGM-IR 3015-4484, PGM-IR 3415-5420, PGM-IR 3015-8000 Instruction

These instructions describe how to replace the IR

. If

the corresponding instruction

additional information to assist in identification

bladder bag

Patent 6,590,690

Portable Gas Monitor (PGM-IR)

Infrared Sensor Replacement

1. Scope

sensor in the Portable Gas Monitor (example shown in
Figure 1). It is assumed that the user is familiar with
the operation of the appropriate monitor model
necessary, refer to
manual for detailed operation and maintenance
information.
instructions and parts necessary for each model, and

(supported gas types and internal
presence).

Table 1 provides a list of the appropriate

IR Sensor (Bench)

Instruction 3015-5508

Rev. 2 – March 2013

Figure 1. Sample Replacement IR Sensor (Left) and PGM-IR in Soft Case (Right)

Table 1: Part Number Information

PGM-IR

Model

Supported

Gas Type

IR Sensor

Replacement

3015-5148 SF6 3015-5509 3015-5087 3015-5150

3015-4484

3415-5420

3015-5696

Refrigerant 3015-4721 3015-5086

3015-8000

3015-8003

3015-8001

3015-8002

* Not for individual sale.

2

CO

3015-5759 3015-5090 3015-9000

NOTE: The solo IR sensor part numbers in Table 1 are used for ID purposes only. To order a
replacement kit for your sensor, use the IR Sensor Replacement Kit part number. For
example, to order a replacement kit for a solo sensor labeled with model number 3015-5087,
order IR Sensor Replacement Kit 3015-5509.

Kit

Solo IR

Sensor*

Instruction

Manual

Purge Air
(Bladder)

Bag?

Yes

3015-4584

3015-5466

No

Instruction 3015-5508 (Rev 2) 1

Portable Gas Monitor (PGM-IR) Infrared Sensor Replacement



Figure 2. Internal Components Showing the IR Sensor (Bench) of a PGM-IR

2. Items Required

• IR Sensor Replacement Kit which includes:

o IR sensor assembly (p/n: see Table 1)
o cable ties, qty: 2 (p/n: 3015-2835)
o this instruction manual (p/n: 3015-5508)

• Medium Phillips head screwdriver

• Small flat blade screwdriver

• Wire cutters (for removing cable ties)

3. Disassemble the Chassis

Gain access to the IR sensor by disassembling the monitor’s metal chassis as follows.

Step

1. Unplug the battery pack from the Portable Monitor.

2. Remove the Monitor and its battery pack from the soft carrying case.

3. Remove a total of 10 screws from the locations shown in Figure 3.

4. Carefully separate the metal chassis, being careful not to puncture the purge-air bag.

Description

2 Instruction 3015-5508 (Rev 2)

Portable Gas Monitor (PGM-IR) Infrared Sensor Replacement



(On Non Digipot Models Only)

Figure 3. Disassembling the Chassis

4. Remove the IR Sensor

Step

5. Review the internal components of the monitor,

Description

shown below, before proceeding. Note that
Figure 4 shows R37 – an analog potentiometer
which is used to adjust the IR emitter drive level.
This component is only present on older models
that do not have the software Digipot feature
(which enables IR emitter adjustments via the
keypad/display rather than the R37
potentiometer).

Figure 4: R37 Component

6. Refer to Figure 4 and Figure 5 while performing the following steps to remove the old
IR sensor.

7.

If present, turn R37 six full revolutions counter-clockwise.

Instruction 3015-5508 (Rev 2) 3