UE 400 Series Model Selection Guide
Use this table to find the right model for your application. Looking for other ranges, wetted materials or connection sizes? Don't see the option you need? Call a Lesman sales specialist at 800-953-7626.
| Sensor | Pressure Connection |
Adjustment | Adjustable Setpoint Range |
Deadband | Proof Pressure |
Click for Price and Availability | ||
|---|---|---|---|---|---|---|---|---|
| Material | Size | 1 SPDT | 2 SPDT | |||||
| UE J400K/J402K Differential Pressure Switches, Single or Dual SPDT Output, Internal Hex Screw Adjustment | ||||||||
| Buna-N Diaphragm and O-Ring |
Aluminum | 1/8" NPTF | Internal Hex Screw | 1" to 7" WCD 2" to 20" WCD 5" to 50" WCD 15" to 100" WCD |
0.1" to 0.5" WCD 0.5" to 2" WCD 0.5" to 5" WCD 0.5" to 7" WCD |
400 PSI | N/A | J402K-540 J402K-541 J402K-542 J402K-543 |
| Buna-N Diaphragm and O-Ring |
Aluminum | 1/8" NPTF | Internal Hex Screw | 2 to 20 PSID 5 to 50 PSID 10 to 100 PSID 20 to 200 PSID |
1 to 2.5 PSI 1 to 3 PSI 1 to 5 PSI 1 to 7 PSI |
2500 PSI | N/A | J402K-544 J402K-545 J402K-546 J402K-547 |
| Buna-N Diapragm and O-Ring |
Aluminum | 1/4" NPTF | Internal Hex Screw | 5" to 80" WCD 2 to 20 PSID 3 to 30 PSID |
1" to 4" WC 0.1 to 0.3 PSI 0.1 to 0.4 PSI |
225 PSI | J400K-455 J400K-456 J400K-457 |
J402K-455 J402K-456 J402K-457 |
| Brass Bellows | Nickel-Plated Brass |
1/4" NPTF | Internal Hex Screw | 3 to 30 PSID 10 to 100 PSID |
0.5 to 2 PSI 0.5 to 3 PSI |
180 PSI | J400K-147 J400K-157 |
J402K-147 J402K-157 |
| Teflon, Buna-N
Diaphragm Buna-N O-Ring |
Aluminum | 1/4" NPTF | Internal Hex Screw | 10 to 100 PSID | 0.2 to 1 PSI | 225 PSI | J400K-559 | J402K-559 |
| Welded 316L Stainless Steel Bellows |
316L SS | 1/2" NPTF | Internal Hex Screw | 3 to 30 PSID 10 to 100 PSID |
0.5 to 2 PSI 0.5 to 3 PSI |
300 PSI | J400K-S147B J400K-S157B |
J402K-S147B J402K-S157B |
| UE H400K/H402K Differential Pressure Switches, Single or Dual SPDT Output, Internal Adjustment via Reference Dial | ||||||||
| Buna-N Diaphragm and O-Ring |
Aluminum | 1/4" NPTF | Internal Reference Dial | 5" to 80" WCD 2 to 20 PSID 3 to 30 PSID |
1" to 4" WC 0.1 to 0.3 PSI 0.1 to 0.4 PSI |
225 PSI | H400K-455 H400K-456 H400K-457 |
H402K-455 H402K-456 H402K-457 |
| Teflon, Buna-N Diaphragm Buna-N O-Ring |
Aluminum | 1/4" NPTF | Internal Reference Dial | 10 to 100 PSID | 0.2 to 1 PSI | 225 PSI | H400K-559 | H402K-559 |
| Sensor Type and Material |
Pressure Connection | Adjustable Setpoint Range |
Deadband | Proof Pressure | Click for Price and Availability | |||
|---|---|---|---|---|---|---|---|---|
| Material | Size | 1 SPDT | 2 SPDT | 3 SPDT | ||||
| H400/H402/H403 Pressure Switches, Internal Adjustment via Reference Dial (+ Have Zinc-Plated Steel Spring Exposed to Media) | ||||||||
| Teflon Diaphragm Viton O-Ring |
316L SS | 1/4" NPTF | 30" HgVac to 0 PSI 30" HgVac to 20 PSI 0 to 20 PSI 0 to 30 PSI 0 to 100 PSI |
0.1" to 0.6" Hg 0.2" to 1" Hg 0.05 to 0.3 PSI 0.1 to 0.4 PSI 0.25 to 0.75 PSI |
225 PSI | H400-550 H400-552 H400-553 H400-554 H400-555 |
H402-550 H402-552 H402-553 H402-554 H402-555 |
N/A |
| Brass Bellows | Nickel-Plated Brass |
1/4" NPTF | 30" HgVac to 0 PSI 30" HgVac to 20 PSI 0" to 80" WC 0 to 20 PSI 0 to 30 PSI 0 to 100 PSI 0 to 200 PSI |
0.2" to 0.9" Hg 0.2" to 1.2" Hg 2" to 6" WC 0.1 to 0.5 PSI 0.1 to 0.6 PSI 0.2 to 0.8 PSI 0.3 to 2 PSI |
5 PSI 25 PSI 5 PSI 25 PSI 40 PSI 125 PSI 200 PSI |
H400-126 + H400-134 + H400-137 H400-144 H400-146 H400-156 H400-164 |
H402-126 + H402-134 + – H402-144 H402-146 H402-156 H402-164 |
H403-126 + H403-134 + – H403-144 H403-146 H403-156 H403-164 |
| Buna-N Diaphragm and O-Ring |
Aluminum | 1/4" NPTF | 0" to 10" WC 0" to 20" WC 0" to 80" WC 80" WC Vac to 0 PSI 30" HgVac to 0 PSI 30" HgVac to 20 PSI 0 to 20 PSI 0 to 30 PSI |
0.15" to 0.4" WC 0.2" to 0.6" WC 0.5" to 2" WC 1" to 3" WC 0.1" to 0.04" Hg 0.1" to 1" Hg 0.05 to 0.2 PSI 0.05 to 0.3 PSI |
225 PSI | H400-441 H400-442 H400-443 H400-448 H400-450 H400-452 H400-453 H400-454 |
– – – – H402-450 H402-452 H402-453 H402-454 |
N/A |
| Welded 316L Stainless Steel Bellows |
316L SS | 1/2" NPTF | 30" HgVac to 0 PSI 30" HgVac to 20 PSI 0" to 80" WC 0 to 20 PSI 0 to 30 PSI 0 to 100 PSI 0 to 200 PSI |
0.2" to 0.9" Hg 0.2" to 1.2" Hg 2" to 6" WC 0.1 to 0.5 PSI 0.1 to 0.6 PSI 0.2 to 0.8 PSI 0.3 to 2 PSI |
5 PSI 25 PSI 5 PSI 25 PSI 40 PSI 125 PSI 200 PSI |
H400-S126B H400-S134B H400-S137B H400-S144B H400-S146B H400-S156B H400-S164B |
H402-S126B H402-S134B – H402-S144B H402-S146B H402-S156B H402-S164B |
H403-S126B H403-S134B – H403-S144B H403-S146B H403-S156B H403-S164B |
| Welded 316L Stainless Steel Bellows |
316L SS | 1/4" NPTF | 0 to 200 PSI 0 to 300 PSI 0 to 500 PSI |
1.5 to 8 PSI 2 to 9 PSI 3 to 12 PSI |
250 PSI 350 PSI 575 PSI |
H400-358 H400-361 H400-376 |
H402-358 H402-361 H402-376 |
H403-358 H403-361 H403-376 |
| Phosphor Bronze Bellows |
Nickel-Plated Brass |
1/4" NPTF | 0 to 200 PSI 0 to 300 PSI |
1.5 to 8 PSI 2 to 10 PSI |
250 PSI 350 PSI |
H400-270 H400-274 |
H402-270 H402-274 |
N/A |
| J402 Pressure Switches, Internal Hex Screw Adjustment, 0.72" Orifice for Clean-Out Purposes | ||||||||
| Buna-N Diaphragm and O-Ring |
Aluminum | 1/2" NPTF | 300" Vac to 0" WC 10" Vac to 0" WC 50" Vac to 0" WC 0.5" to 5.0" WC 2.5" to 50" WC 10" to 250" WC |
0.2" to 12" WC 0.1" to 1" WC 0.1" to 5" WC 0.1" to 0.3" WC 0.1" to 2" WC 0.1" to 10" WC |
200 PSI | N/A | J402-520 J402-521 J402-522 J402-523 J402-524 J402-525 |
N/A |
| J400/J402/J403 Pressure Switches, Internal Hex Screw Adjustment (+ Models Have Zinc-Plated Steel Spring Exposed to Media) | ||||||||
| Brass Bellows | Nickel-Plated Brass |
1/4" NPTF | 30" HgVac to 0 PSI 30" HgVac to 20 PSI 0" to 80" WC 0 to 20 PSI 0 to 30 PSI 0 to 100 PSI 0 to 200 PSI |
0.2" to 0.9" Hg 0.2" to 1.2" Hg 2" to 6" WC 0.1 to 0.5 PSI 0.1 to 0.6 PSI 0.2 to 0.8 PSI 0. 3 to 2 PSI |
5 PSI 25 PSI 5 PSI 25 PSI 40 PSI 125 PSI 200 PSI |
J400-126 + J400-134 + J400-137 J400-144 J400-146 J400-156 J400-164 |
J402-126 + J402-134 + J402-137 J402-144 J402-146 J402-156 J402-164 |
J403-126 + J403-134 + J403-137 J403-144 J403-146 J403-156 J403-164 |
| Buna-N Diaphragm and O-Ring |
Aluminum | 1/4" NPTF | 0" to 2" WC 0" to 10" WC 0" to 20" WC 0" to 80" WC 0" to 20" WC 0" to 80" WC 0 to 20 PSI 0 to 30 PSI |
0.07" to 0.25" WC 0.15" to 0.4" WC 0.2" to 0.6" WC 0.5" to 2" WC 1" to 2" WC 1" to 3" WC 0.05 to 0.2 PSI 0.05 to 0.3 PSI |
225 PSI | J400-440 J400-441 J400-442 J400-443 J400-449 J400-451 J400-453 J400-454 |
– J402-441 J402-442 J402-443 J402-449 J402-451 J402-453 J402-454 |
– – J403-442 J403-443 – J403-451 J403-453 J403-454 |
| Buna-N Diaphragm and O-Ring |
Stainless Steel | 1/4" NPTF | 80" WC Vac to 0 PSI 30" HgVac to 0 PSI 30" HgVac to 20 PSI |
1" to 3" WC 0.1" to 0.4" Hg 0.2" to 1" Hg |
225 PSI | J400-448 J400-450 J400-452 |
J402-448 J402-450 J402-452 |
J403-448 J403-450 J403-452 |
| Teflon Diaphragm Viton O-Ring |
316L SS | 1/4" NPTF | 30" HgVac to 0 PSI 0" to 80" WC 30" HgVac to 20 PSI 0 to 20 PSI 0 to 30 PSI 0 to 100 PSI |
0.1" to 0.6" Hg 1.5" to 3.5" WC 0.2" to 1" Hg 0.05 to 0.3 PSI 0.1 to 0.4 PSI 0.25 to 0.75 PSI |
225 PSI | J400-550 J400-551 J400-552 J400-553 J400-554 J400-555 |
J402-550 J402-551 J402-552 J402-553 J402-554 J402-555 |
J403-550 J403-551 J403-552 J403-553 J403-554 J403-555 |
| 316L Stainless Steel Diaphragm, Viton O-Ring |
316L SS | 1/4" NPTF | 0 to 20 PSI 0 to 50 PSI 0 to 100 PSI |
0.2 to 4 PSI 0.7 to 6 PSI 1 to 7 PSI |
225 PSI | J400-570 J400-571 J400-572 |
J402-570 J402-571 J402-572 |
J403-570 J403-571 J403-572 |
| Phosphor Bronze Bellows |
Nickel-Plated Brass |
1/4" NPTF | 0 to 200 PSI 0 to 300 PSI |
1.5 to 8 PSI 2 to 10 PSI |
250 PSI 350 PSI |
J400-270 J400-274 |
J402-270 J402-274 |
J403-270 J403-274 |
| Welded 316L Stainless Steel Bellows |
316L SS | 1/4" NPTF | 0 to 200 PSI 0 to 300 PSI 0 to 500 PSI |
1.5 to 8 PSI 2 to 9 PSI 3 to 12 PSI |
250 PSI 350 PSI 575 PSI |
J400-358 J400-361 J400-376 |
J402-358 J402-361 J402-376 |
J403-358 J403-361 J403-376 |
| Welded 316L Stainless Steel Bellows |
316L SS | 1/2" NPTF | 30" HgVac to 0 PSI 30" HgVac to 20 PSI 0" to 80" WC 0 to 20 PSI 0 to 30 PSI 0 to 100 PSI 0 to 200 PSI |
0.2" to 0.9" Hg 0.2" to 1.2" Hg 2" to 6" WC 0.1 to 0.5 PSI 0.1 to 0.6 PSI 0.2 to 0.8 PSI 0. 3 to 2 PSI |
5 PSI 25 PSI 5 PSI 25 PSI 40 PSI 125 PSI 200 PSI |
J400-S126B J400-S134B J400-S137B J400-S144B J400-S146B J400-S156B J400-S164B |
J402-S126B J402-S134B J402-S137B J402-S144B J402-S146B J402-S156B J402-S164B |
J403-S126B J403-S134B J403-S137B J403-S144B J403-S146B J403-S156B J403-S164B |
| J400/J402/J403 Pressure Switches, Internal Hex Screw Adjustment (Not recommended for gas service since drying of O-ring seal can allow bleeding of medium into the atmosphere.) | ||||||||
| 303 Stainless Steel Piston Buna-N O-Ring |
303 SS | 1/4" NPTF | 100 to 1000 PSI 200 to 3000 PSI 500 to 6000 PSI |
30 to 150 PSI 40 to 250 PSI 50 to 400 PSI |
10000 PSI | J400-610 J400-612 J400-614 |
J402-610 J402-612 J402-614 |
J403-610 J403-612 J403-614 |
| Bulb OD x Stem Length |
Adjustment | Adjustable Range | Max Temperature | Scale Division | Click for Price and Availability | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| °F | °C | °F | °C | °F | °C | 1 SPDT | 2 SPDT | 3 SPDT | ||
| E400/E402/E403 Temperature Switches: 304 Stainless Steel Bulb with 6-Foot Capillary | ||||||||||
| 3/8" OD x 2-5/8" 3/8" OD x 5" 3/8" OD x 6-3/4" 3/8" OD x 2-5/8" 3/8" OD x 2-1/8" 3/8" OD x 3-1/4" |
Internal via Reference Dial |
-120° to 100° -20° to 80° 25° to 100° 30° to 250° 100° to 400° 350° to 640° |
-84.4° to 37.8° -28.9° to 26.7° -3.9° to 37.8° -1.1° to 121.1° 37.8° to 204.4° 176.7° to 337.8° |
150° 130° 150° 300° 450° 690° |
65.6° 54.4° 65.6° 148.9° 232.2° 365.6° |
10° 5° 5° 10° 10° 10° |
5° 2° 2° 5° 10° 10° |
E400-2BSA E400-5BS E400-4BS E400-2BSB E400-3BS E400-8BS |
E402-2BSA E402-5BS E402-4BS E402-2BSB E402-3BS E402-8BS |
E403-2BSA E403-5BS E403-4BS E403-2BSB E403-3BS E403-8BS |
| Stem OD x
Length Below 1/2" Thread |
Adjustment | Adjustable Range | Max Temperature | Scale Division | Click for Price and Availability | |||||
| °F | °C | °F | °C | °F | °C | 1 SPDT | 2 SPDT | 3 SPDT | ||
| B400/B402/B403/C400/C402/C403 Temperature Switches: Nickel-Plated Brass Immersion Stem | ||||||||||
| 9/16" OD x 1-7/8" BT | Internal via Reference Dial |
0° to 225° 200° to 425° |
-17.8° to 107.2° 93.3° to 218.3° |
275° 475° |
135° 246.1° |
5° | 5° | B400-120 B400-121 |
B402-120 B402-121 |
B403-120 B403-121 |
| 9/16" OD x 1-7/8" BT | Internal via Hex Screw |
0° to 225° 200° to 425° |
-17.8° to 107.2° 93.3° to 218.3° |
275° 475° |
135° 246.1° |
5° | 5° | C400-120 C400-121 |
C402-120 C402-121 |
C403-120 C403-121 |