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Senva P6-4000-1LP : Duct Differential Pressure Transmitter, Select Range (Uni/Bi): 0-40"(1/2.5/5/8/10/15/20/25/30/40"), Select Outputs: 4-20 mA, 0-5 VDC, or 0-10 VDC, Display, Auto-Zero, Buy American Act Compliant, 7 Year Limited Warranty

Senva P6-4000-1LP : P6 Pro NEMA 4 Universal Dry Pressure Transmitter, 0-40 in WC/0-10000 Pa Base with 10 Selectable Sub-Ranges, Selectable mA/V Output, Uni or Bi, Fast/Slow Response, LCD Display, Duct Probe + Barbs, BAA Compliant, Made in USA

Senva

MSRP: $410.22
$176.97
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SKU:
P6-4000-1LP
Condition:
New
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Base Range0-40 in WC / 0-10000 Pa
Sub-Ranges10 Selectable
DirectionUni or Bi (Switch)
Output Signal4-20mA (2W/3W), 0-5V, 0-10V
Response RateSelectable 2s or 8s
DisplayLCD (inWC or Pa)
Pressure PortUniversal (Probe + Barbs)
EnclosureNEMA 4 (Washdown)

The Senva P6-4000-1LP is part of the Senva P6 Pro Series - the premium NEMA 4 universal dry pressure transmitter in Senva's lineup. Built for harsh and washdown environments, this unit's 0-40 in WC / 0-10000 Pa base scales to 10 field-selectable sub-ranges (via internal rotary dial) with field-selectable output signal (4-20 mA 2-wire loop, 4-20 mA 3-wire, 0-5 VDC, or 0-10 VDC), field-selectable direction (uni or bi), field-selectable display units (inches WC or pascals), and field-selectable response rate (2-second fast or 8-second slow). LCD display is standard. The watertight gasketed cover and integrated cable gland maintain NEMA 4 rating in wet, dusty, or washdown-clean environments where NEMA 1 transmitters can't be deployed. This is the Duct Probe variant - NEW for the P6: the duct probe variant now ships with both the threaded duct probe AND the dual brass barbs on the same unit. The probe screws into the back of the enclosure for direct in-duct mounting, with the unused barb capped (to maintain NEMA 4 rating). Alternatively, plumb tubing to the barbs and use the unit panel-mounted - one SKU covers both installation methods.

NEMA 4 Washdown-Rated. The P6 Pro Series is the only universal transmitter in Senva's dry-pressure lineup with a NEMA 4 enclosure rating - watertight, hose-down clean, and dust-tight. Comes with an integrated watertight cable gland for the field wiring entry; the gland can be replaced with 3/8 in conduit fitting if hard conduit is preferred. The right pick for food and beverage plants, pharmaceutical processing, kitchen exhaust, parking garage exhaust, indoor pool spaces, agricultural facilities, and any other wet, humid, or contaminated installation where a NEMA 1 transmitter would fail.
Best for: high-static and industrial applications - large fan and blower monitoring, kiln draft control, paint booth differential, dust collector filter loading, and other high-pressure dry-air or N2 applications, specifically in environments where NEMA 4 is required. Washdown rooms, high-humidity spaces, dusty mechanical rooms, outdoor-rated installations, and food/pharma facilities all favor the P6 over the P5 (NEMA 1) at the same price tier. The 10 selectable sub-ranges plus selectable response rate also make this the right pick when you need granular range tuning that the P5's 4-position selector can't deliver.
7-YEAR
WARRANTY
Industry-leading 7-year limited warranty. Senva backs the P6 Pro Series electronics for seven years - significantly longer than typical 2-5 year warranties on competing pressure transmitters. ZOT Supply is an authorized Senva distributor; product ships factory-new from Beaverton, Oregon with full manufacturer warranty intact.
Buy American Act (BAA) / BABAA / TAA / ARRA Compliant. The Senva P6 Series is manufactured in the USA with over 65% domestic component cost and qualifies under Buy American Act, Build America Buy America Act (BABAA), Trade Agreements Act (TAA), and American Recovery and Reinvestment Act (ARRA Section 1605) for federal, state, and municipal procurement contracts. Senva's current Commerce Declaration (updated April 2026) is available from ZOT on request.

Key Features

NEMA 4 Washdown Enclosure

Watertight, dust-tight, hose-down rated housing with gasketed cover and integrated watertight cable gland. UL94-5VB ABS construction. The right pick for kitchen exhaust, food/pharma plants, parking garages, indoor pools, and other wet or contaminated environments where NEMA 1 transmitters fail.

10 Selectable Sub-Ranges

Internal 10-position rotary dial selects from 1.0 in WC to 40 in WC (or equivalent Pa values), with 10 finely-spaced steps in between. Twice the granularity of the P5's 4-position selector - the right pick when range tuning matters or when you don't know the exact pressure profile yet at spec time.

Selectable Fast / Slow Response

DIP-switch selectable response: Fast = 2 seconds for dynamic applications (VAV, fast-acting filter monitoring, transient duct events) or Slow = 8 seconds for stable averaging in turbulent ducts. Match the response to the application without ordering a different SKU.

Universal Output Signal

Slide-switch selectable: 4-20 mA 2-wire loop powered, 4-20 mA 3-wire VAC/VDC powered, 0-5 VDC, or 0-10 VDC. One SKU covers all four output types - field-set to match the controller input at install time.

LCD Standard + inWC/Pa Selectable

Built-in LCD display is standard on all P6 SKUs (not optional). DIP-switch selects between inches WC and pascals on the display - same SKU works for imperial-spec North American projects and metric-spec international projects. LED status indicator: power heartbeat, auto-zero complete, 110% over-pressure.

Universal Duct Probe (NEW)

NEW for the P6 Pro Series: the duct probe variant ships with BOTH the threaded duct probe AND the dual brass barbs on the same unit. Mount the unit on a wall and plumb tubing to the barbs, OR thread the probe into the back of the enclosure for direct in-duct mounting (cap the unused barb to maintain NEMA 4 rating). One SKU covers both methods.

10 Selectable Sub-Ranges & Outputs

This SKU is the 0-40 in WC / 0-10000 Pa base unit. Set the internal 10-position rotary dial to the desired sub-range, then use the slide switches to select Uni/Bi direction, inWC/Pa display units, Fast/Slow response, and the output signal type. Power the unit off before making any changes and form a drip-loop in the tubing to protect against condensation.

Dial PositionInches WC Sub-RangePa Sub-Range
01.0 in WC250 Pa
12.5 in WC625 Pa
25.0 in WC1250 Pa
38.0 in WC2000 Pa
410 in WC2500 Pa
515 in WC3750 Pa
620 in WC5000 Pa
725 in WC6250 Pa
830 in WC7500 Pa
940 in WC10000 Pa

Technical Specifications

SpecificationValue
ModelP6-4000-1LP
SeriesP6 Pro Series (NEMA 4 Universal)
Base Pressure Range (Inches WC)0-40 in WC
Base Pressure Range (Pa)0-10000 Pa
Selectable Sub-Ranges (Inches WC)1.0 in WC, 2.5 in WC, 5.0 in WC, 8.0 in WC, 10 in WC, 15 in WC, 20 in WC, 25 in WC, 30 in WC, 40 in WC
Selectable Sub-Ranges (Pa)250 Pa, 625 Pa, 1250 Pa, 2000 Pa, 2500 Pa, 3750 Pa, 5000 Pa, 6250 Pa, 7500 Pa, 10000 Pa
Sub-Range Selection10-position internal rotary dial
DirectionField-selectable (Uni or Bi) via slide switch
Display UnitsField-selectable (Inches WC or Pa) via slide switch
Output SignalsField-selectable: 4-20 mA 2-wire loop / 4-20 mA 3-wire / 0-5 VDC / 0-10 VDC
Supply Voltage12-30 VDC or 24 VAC (+/-10%), 30 mA max
Accuracy+/-1.00% of selected range (combined non-linearity, hysteresis, and repeatability at 70 F)
Sensor TypeMEMS silicon piezoresistive, precision calibrated
Zero FunctionPushbutton + N.O. contact-closure auto-zero
Zero ToleranceIncluded in accuracy specification
Span Tolerance+/-1.00% (+/-1% +/-0.005 in WC for ranges under 0.10 in WC)
Zero Drift (1 year)0.004 in WC/year max (0.4% for units over 0.5 in WC)
Thermal Shift0.02% FSO per deg C (0.01% FSO per deg F), referenced to 72 F
Response RateField-selectable: 2 seconds (fast) or 8 seconds (slow)
Overpressure332 in WC
Max Static Line Pressure332 in WC
Burst Pressure415 in WC
Position SensitivityNon-position sensitive
Operating Temperature-4 to 140 F (-20 to 60 C)
Compensated Temperature-4 to 140 F (-20 to 60 C)
Operating Humidity0 to 95% RH, non-condensing
Media CompatibilityDry, oil-free air or nitrogen (N2)
Display5-digit LCD (standard, not optional)
Pressure PortDuct Probe + Barbs (Universal)
Tubing ConnectionBrass hose barbs, accepts 1/8 in and 1/4 in ID poly tubing
Enclosure MaterialUL94-5VB rated, ABS
Enclosure RatingNEMA 4 (cap unused barb when using duct probe to maintain rating)
Cable EntryWatertight cable gland (included); accepts 3/8 in conduit fitting if removed
Dimensions4.0 in H x 3.7 in W x 2.1 in D (101.6 x 94.0 x 53.3 mm)
Weight0.20 lb
ComplianceCE, RoHS
Procurement ComplianceBuy American Act (BAA), BABAA, TAA, ARRA Section 1605
Country of OriginMade in USA - Beaverton, Oregon (over 65% domestic component cost)
Warranty7-year limited (electronics)
Manufacturer Part NumberP6-4000-1LP

Documentation

PDFP6 Pro Series DatasheetPDFInstallation Manual (152-0374-0I)PDFEngineering SpecificationsPDFBAA / BABAA / TAA / ARRA Declaration (2026)PDFDry-Pressure Hose Length Application Note

Frequently Asked Questions

What sub-ranges and output options does the P6-4000-1LP support?
This is the 0-40 in WC / 0-10000 Pa base unit with 10 selectable sub-ranges via internal rotary dial. Inches WC options: 1.0, 2.5, 5.0, 8.0, 10, 15, 20, 25, 30, 40 in WC. Pascal options: 250, 625, 1250, 2000, 2500, 3750, 5000, 6250, 7500, 10000 Pa. The output signal is also field-selectable (4-20 mA 2-wire loop, 4-20 mA 3-wire, 0-5 VDC, or 0-10 VDC), as is direction (uni or bi), display units (inWC or Pa), and response rate (2 sec fast or 8 sec slow). All configuration is done via the internal dial and DIP switches; power the unit off before making changes.
How is the P6 Pro Series different from the P5 Universal?
Four major differences. (1) NEMA 4 enclosure on the P6 vs NEMA 1 on the P5 - the P6 is washdown-rated and survives wet, dusty, humid, and contaminated environments where the P5 would fail. (2) 10 selectable sub-ranges on the P6 vs 4 on the P5 - much finer range tuning. (3) Selectable response rate (2-sec fast or 8-sec slow) on the P6 vs fixed 8-sec on the P5 - the P6 can drive fast-acting VAV control or slow averaging applications from the same unit. (4) LCD standard on every P6, vs optional on the P5. Pick the P6 when the install environment is harsh, when you need granular range tuning, or when fast response matters.
What does NEMA 4 mean for installation?
NEMA 4 means the enclosure is watertight, dust-tight, and hose-down clean when properly installed. To maintain the rating: (1) Use the included watertight cable gland for the field wiring entry (or substitute a NEMA 4 rated 3/8 in conduit fitting if hard conduit is required). (2) If you're using the duct probe variant, cap the unused barb to keep the enclosure sealed. (3) Make sure the cover gasket seats fully when closing the enclosure - re-seat if you've had it open. The right install lets you deploy in kitchen exhaust, parking garages, indoor pools, food plants, and pharmaceutical processing rooms - places NEMA 1 transmitters can't go.
When should I use fast vs slow response rate?
Fast (2 seconds) for dynamic applications: VAV box control, fast-acting damper feedback, transient filter loading events, smoke control supervision, and any application where the BAS needs to react quickly to pressure changes. Slow (8 seconds) for stable averaging: noisy or turbulent duct measurements, room or zone static pressure, slow-cycle filter loading trending, and applications where damping out high-frequency pressure noise produces a cleaner control signal. The slide switch is inside the enclosure; power off before changing.
What's the NEW Universal Duct Probe feature?
Older P6 duct-probe variants used a probe-only port - you couldn't switch to barb-mount tubing without ordering a different SKU. The current P6 Duct Probe variant ships with BOTH the threaded duct probe AND the dual brass barbs on the same unit. You can mount the unit on a wall and plumb tubing to the barbs, OR thread the probe into the back of the enclosure for direct in-duct mounting (cap the unused barb to maintain NEMA 4 rating). One SKU covers both installation methods - useful for stocking decisions and field flexibility.
How do I wire the output and zero the transmitter?
Wiring: Four terminals (PWR, COM, VOUT, IOUT) plus a remote-zero input. For 4-20 mA 2-wire loop: PWR and IOUT in series with the loop receiver, 12-30 VDC supply, no COM connection. For 4-20 mA 3-wire: PWR + COM + IOUT. For 0-5 VDC or 0-10 VDC: PWR + COM + VOUT. Set the slide switch (top = 0-5 VDC 3-wire, middle = 0-10 VDC 3-wire, bottom = 4-20 mA 2-wire) to match. Zeroing: with no pressure applied to either port (or with H and L barbs temporarily tied together), press and hold the ZERO SET button for 2 seconds. The LED flashes momentarily when the zero completes. A remote N.O. contact closure on the ZERO terminal triggers the same operation - useful for periodic BAS-driven re-zero.
Series:
P6 Pro Series (NEMA 4 Universal)
Pressure Range Class:
Medium (10 to 50 in WC)
Pressure Range:
40 in WC
Direction:
Field-Selectable
Output Signal:
Field-Selectable (mA/V)
Display:
LCD
Accuracy Class:
Mid (0.5 to 2% FS)
Mounting:
Duct
Probe:
Probe
Made in USA:
Yes
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