Baldwin™General Purpose Direct Extractive Heated Filter Probes

Baldwin™ General Purpose Direct Extractive Heated Filter Probes

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Baldwin’s Direct Extractive Heated Filter Probes feature an advanced design to extract sample gas and remove particulate while preventing condensation prior to the gas sample entering the heated sample line.

New Machine-Lathed Sure-Lock™ Filter Assembly

Baldwin’s new Sure-Lock filter assembly is precision machined and features a unique design to help ensure proper insertion into the assembly and to reduce the possibility of leaks. The filter head is inserted into a notch in the assembly to ensure proper alignment before locking it in place. The o-rings are tightened under compression, rather than being located on the sides of the filter head, to reduce the risk of leakage.

  • Sure Lock™ filter assembly reduces risk of leakage
  • Broad range of filter elements designed for various applications
  • Insulated enclosure with heat-shrink sample line boot to maintain constant temperature
  • Available with air blowback system

Options Available:

  • Schedule 40, Schedule 80, Hastelloy, and Durinert+ stinger probes
  • Sintered stainless steel, screen mesh, ceramic, glass fiber, and Hastelloy filter elements
  • Air blowback system with 115 VAC, 230 VAC, 12 VDC, or 24 VDC solenoid
  • Solenoid to close sample line when blowback is initiated
  • Gas cooling spool piece for high temperature gas sources
  • Eliminates the complexity of separate temperature controllers heater bands and Kalrez o-rings for high temperature sampling requirements
  • Various size flanges
  • Durinert™ or Teflon coated filter assembly option for corrosive gas streams

Model Specifications

Model Blowback Filter Assembly
Temp Control
Temp/Blowback
Circuit Board
Enclosure Dimensions* Weight
31 N/A Self
Regulated
N/A Insulated
Canister
6x14x6 in
15x36x15 cm
14 lbs
6 kg
32C N/A External Regulated N/A NEMA 4
Steel
14x12x8 in
36x30x20 cm
30 lbs
14 kg
33C N/A Self
Regulated
N/A NEMA 4
Steel
14x12x8 in
36x30x20 cm
30 lbs
14 kg
34C 2-way
solenoid
External Regulated N/A NEMA 4
Steel
14x12x8 in
36x30x20 cm
34 lbs
15 kg
34C-R 2-way
solenoid
Self
Regulated
N/A NEMA 4
Steel
14x12x8 in
36x30x20 cm
34 lbs
15 kg
35C 2-way
solenoid
Circuit Board
Regulated
N/A NEMA 4
Steel
14x12x8 in
36x30x20 cm
37 lbs
17 kg
36C 2-way
solenoid
Circuit Board
Regulated
N/A NEMA 4
Steel
14x15x8 in
36x38x20 cm
37 lbs
17 kg

*Excluded probe stinger and heat-shrink boot.

part-numbers-baldwin-3x-Series

1 – Voltage
115 VAC, 50/60 Hz 1A
230 VAC, 50 Hz 2A
2 – Filter Element Type
10 micron sintered stainless steel SS
2 micron, 316L stainless steel screen mesh M2
5 micron sintered stainless steel 5
20 micron sintered stainless steel 20
2 micron ceramic C1
0.1 micron glass C2
0.7 micron glass / TFE coated C7
2 micron Teflon T2
3 – Coatings
Durinert -PLUS coating, probe body and stinger DC
Teflon coated filter head TC
4 – Type 4X Enclosure
Probe enclosure, NEMA / Type 4X, stainless steel 4X
5 – Flange
2″, 150# with gasket & bolts 2
Gas cooling spool piece: w/2″ flanges & 6″ spool 2A
Gas cooling spool piece: w/2″ flanges & 12″ spool 2B
3″, 150# with gasket & bolts 3
Gas cooling spool piece: w/3″ flanges & 6″ spool 3A
Gas cooling spool piece: w/3″ flanges & 12″ spool 3B
4″, 150# with gasket & bolts 4
Gas cooling spool piece: w/4″ flanges & 6″ spool 4A
Gas cooling spool piece: w/4″ flanges & 12″ spool 4B
6″, 150# with gasket & bolts 6
6 – Sample shut-off, 2-way valve (model 34 only)
2-Way solenoid valve, closes sample line during blowback SV
7 – Stinger
18″, 316L stainless steel, 1/2″, schedule 40 41
2-foot, 316L stainless steel, 1/2″, schedule 40 42
3-foot, 316L stainless steel, 1/2″, schedule 40 43
4-foot, 316L stainless steel, 1/2″, schedule 40 44
5-foot, 316L stainless steel, 1/2″, schedule 40 45
18″, 316L stainless steel, 1/2″, schedule 80 81
2-foot, 316L stainless steel, 1/2″, schedule 80 82
3-foot, 316L stainless steel, 1/2″, schedule 80 83
4-foot, 316L stainless steel, 1/2″, schedule 80 84
5-foot, 316L stainless steel, 1/2″, schedule 80 85
18″, Hastelloy C276, 1/2″, schedule 80 H1
2-foot, Hastelloy C276, 1/2″, schedule 80 H2
3-foot, Hastelloy C276, 1/2″, schedule 80 H3
4-foot, Hastelloy C276, 1/2″, schedule 80 H4
5-foot, Hastelloy C276, 1/2″, schedule 80 H5
8 – Blowback Solenoid Voltage; line voltage standard
2-Way solenoid, 12 VDC 12
2-Way solenoid, 24 VDC 24
Area Classification General Purpose
Filter Assembly Sure-Lock, 316 stainless steel
Filter Element Types 10 micron sintered SS (standard)
5, 20 micron sintered SS
2 micron ceramic
2 micron SS screen mesh
0.1 micron glass
0.7 micron glass / TFE coated
2 micron Teflon
Probe Lengths 18 inch, 1, 2, 3, 4, 5 foot
Probe Material Schedule 40, Schedule 80 stainless steel or Hastelloy
Connections 1 1/4″ male pipe nipple mount; 1/2″ female pipe thread for stinger
Connectors 1/4″ cal gas, 3/8″ blowback, 3/8″ sample line
Thermocouple Type K
Heater Type Silicone rubber blanket w/metal snap closures, 100W (standard)
Heat-shrink Boot* 7″ length, 2.75″ min expanded I.D. nose
O-rings Viton™
Gaskets Graphoil™
Enclosure Insulation 1/8″ thick silicone, medium density
Calibration Gas Requirement 20 psig, 6-10 LPM
Probe Operating Temperature 375°F (190°C)
Input Voltage 115 (230 optional) VAC, 50/60 Hz

*Not available on Model 31 Portable Filter Probe

Blowback System Specifications (Models 34C, 34C-R, 35C, 36C)

Blowback Duration 5 sec standard
Instrument Air for Blowback Min 50 psig, Max 90 psig
Blowback Accumulator Tank 16 ga. SS, 4×8 inch cylinder
Blowback Flow rate 14 scfh
Blowback Sokenoid Valve
(Model 4P-34C-R only)
Line voltage (standard)
12VDC, 24 VDC (optional)

Baldwin™ is a Trademark of Perma Pure LLC
Viton™ is a Registered Trademark of DuPont
Graphoil™ is a Registered Trademark of Union Carbide Corporation