background image

Installation Guide

Pressure Monitoring

Installation Guide

Pressure Monitoring

Installation Guide

Pressure Monitoring

Installation Guide

Pressure Monitoring

®

®

®

®

Product Identification

Dimensions

Product Overview

The KDP2M transducer can measure either air pressure or velocity with the flip of a 
switch. The KDP2M is available in three installation configurations: duct, panel or 
universal. Duct and panel models have two pressure and velocity options: 0-1 in. WC / 
0-3,000 ft/min or 1-10 in. WC / 3,000-6,000 ft/min with four field-selectable sub-ranges. 
The universal model comes in one pressure/velocity range: 0-10 in. WC / 0-6,000 ft/
min with seven field-selectable sub-ranges. All variants are available with and without 
display. The KDP2M has an IP65/NEMA 4 environmental rating and a 5-year limited 
warranty.

KDP2M Series

Differential Pressure / Air Velocity Transducer

KDP2M

Enclosure

Local Display

D = Duct
P = Panel

Range

1 = Pressure: 0 to 1 in. WC / 0 to 250 Pa
           Velocity: 0 to 3,000 ft/min / 0 to 15 m/s
10 = Pressure: 1 to 10 in. WC/250 to 2,500 Pa
           Velocity: 0 to 6,000 ft/min / 0 to 30 m/s

Local Display

Range

010 = Pressure: 0 to 10 in. WC / 0 to 2,500 Pa
             Velocity: 0 to 7,000 ft/min / 0 to 35 m/s

in. (mm)

KDP2M

Patent Pending

Specifications

Installation, Wiring 

& Configuration

FILTER

LOW

HIGH

AIR FLO

W

AIR FL

OW

AIR FLO

W

AIR FLO

W

Static Pressure

Panel Installations

Duct Installations

Differential Pressure

1.   Plan the installation. Panel or duct mount? 

2.   For duct mount applications, thread the probe into the back of the device housing, as 

shown in the dimensional drawing.

3.   Configure the internal tubing for the selected installation method as described below.  

 
Duct mount tubing configuration: 
     a.   Connect the right-side tube to the rear brass barb marked as “-” on the     

 

            underside of the device housing. 
     b.   Connect the left-side tube to the probe in the back of the device housing. 
 
Panel mount tubing configuration: 
     a.   Connect the right-side tube to the rear brass barb marked as “-” on the   

 

            underside of the device housing. 
     b.   Connect the left-side tube to the front brass barb marked as “+” on the  

 

            underside of the device housing.

Installation, Wiring  

& Configuration (cont.)

4.     Mount the transducer (see the screw hole diagram below). 
 
 
 
 
 
 
 
 
 
 

 
 
 
 

5.     

For applications using conduit, remove the cable gland nut on the bottom of the unit.  

         Thread a standard 1/2-inch NPT female threaded coupler onto the body of the cable  
         gland. Connect the opposite end of the coupler to the conduit.  

Tubing for Duct Mount

Tubing for Panel Mount

Tubing for Duct Mount

Tubing for Panel Mount

 

2.3

(59)

CTR-CTR

3.3

(83)

CTR-CTR

2.5

(62)

To Pickup

Tube

1.4

(35)

To Pickup Tube

0.5

(13)

3.2

(81)

in. (mm)

NOTICE

• This product is not intended for life or 

safety applications.

• Do not install this product in hazardous 

or classified locations.

• Read and understand the instructions 

before installing this product.

• Turn off all power supplying equipment 

before working on it.

• The installer is responsible for 

conformance to all applicable codes.

If this product is used in a manner not specified 

by the manufacturer, the protection provided 

by the product may be impaired. No 

responsibility is assumed by the manufacturer 

for any consequences arising out of the use of 

this material.

Z207542-0B        Page 2 of 8                                                             

©

 2018  Kele / USA 888-397-5363  / [email protected]                                                                                                                  0818

 

Z207542-0B        Page 4 of 8                                                               

©

 2018  Kele / USA 888-397-5363  / [email protected]                                                                                                                 0818

 

Z207542-0B        Page 1 of 8                                                              

©

 2018  Kele / USA 888-397-5363  / [email protected]                                                                                                                  0818

 

Z207542-0B        Page 3 of 8                                                               

©

 2018  Kele / USA 888-397-5363  / [email protected]                                                                                                                 0818

 

KDP2MU

-

-

-

-

-

-

LCD = LCD Display
X = No Display

N = NIST
X = None

N = NIST
X = None

LCD = LCD Display
X = No Display

For velocity applications, use the FXP Series air velocity/measurement probe or AA18, 
AA19 or AA20 velocity pitot tubes. For use with the PX3P (panel) and PX3U (universal) 
models in Velocity mode only. Sold separately.

AIR FL

OW

Velocity with FXP Probe

Velocity with AA18/AA19/AA20 Pitot Tube

AIR FL

OW

 

 

 

1.6

(42)

1.6

(42)

3.5

(88)

 

 

3.5

(88)

4.4

(112)

7.4

(188)

0.3

(7)

3.1

(78)

 

 

   Media Compatibility

Dry air or inert gas

Input Power

Three-wire Volt mode: 24 Vac or 12-30 Vdc* 

Two-wire mA mode: 12-30 Vdc*

Output Power

Field-selectable: 2-wire, loop-powered 4-20 mA 

Minimum input voltage for 4 to 20 mA operation: 250 Ω loop = 12 Vdc; 500 Ω loop = 19 Vdc 

(DC only, clipped and capped), 24 Vac/dc or 3-wire 0-5V/0-10V 

Minimum load resistance for Volt operation: 5 kΩ

Pressure 

Range 1

Pressure 

Mode

Unidirectional: 0.1/0.25/0.5/1 in. WC FS, switch selectable 

Bidirectional: ±0.1/±0.25/±0.5/±1 in. WC FS, switch selectable 

Unidirectional: 25/50/100/250 Pa FS, switch selectable 

Bidirectional: ±25/±50/±100/±250 Pa FS, switch selectable 

Velocity 

Mode

500/1,000/2,000/3,000 ft/min 

2.5/5/10/15 m/s

Pressure 

Range 10

Pressure 

Mode

Unidirectional: 1.0/2.5/5/10 in. WC FS, switch selectable 

Bidirectional: ±1.0/±2.5/±5/±10 in. WC FS, switch selectable 

Unidirectional: 250/500/1,000/2500 Pa FS, switch selectable 

Bidirectional: ±250/±500/±1,000/±2500 Pa FS, switch selectable

Velocity 

Mode

3,000/4,000/5,000/6,000 ft/min 

15/20/25/30 m/s

Pressure 

Range 010

Pressure 

Mode

Unidirectional: 0.1/0.25/0.5/1/2.5/5/10 in. WC FS, switch selectable 

Bidirectional: ±0.1/±0.25/±0.5/±1/±2.5/±5/±10 in. WC FS, switch selectable 

Unidirectional: 25/50/100/250/500/1,000/2500 Pa FS, switch selectable  

Bidirectional: ±25/±50/±100/±250/±500/±1,000/±2500 Pa FS, switch selectable

Velocity 

Mode

500/1,000/2,000/3,000/4,000/5,000/6,000/7,000 ft/min 

2.5/5/10/15/20/25/30/35 m/s

   Response Time

Standard: T95 in 20 sec, Fast: T95 in 2 sec, DIP switch selectable

   Mode

Unidirectional or bidirectional, DIP switch selectable

   Display (Option)

Pressure mode: Signed 3-1/2 digit LCD, indicates pressure, overrange indicator 

Velocity mode: Signed 4-1/2 digit LCD, indicates velocity, overrange indicator

Proof Pressure

3 psid (20, 600 Pa) 

Burst Pressure

 5 psid (34, 500 Pa)

Pressure Mode Accuracy

±1% FS (combined linearity and hysteresis) 

Velocity Mode Accuracy

±90 ft/min (±0.45 m/s) plus 5% of measured value**

Temperature Effect

1” (250 Pa) models: 0.05%/°C; 10” (2,500 Pa) models: 0.01%/°C 

(Relative to 25 °C) 0 to 50 °C (32 to 122 °F)

Zero Drift (1-year)

1” (250 Pa) models: 2.0% max.; 10” (2,500 Pa) models: 0.5% max.  

Zero Adjust

Pushbutton auto-zero and digital input (2-position terminal block)

Operating Environment

0 to 60 °C (32 to 140 °F) 

Altitude of Operation

0 to 3,000 m

Pollution Degree

2

Humidity Range

100% RH, non-condensing

Mounting Location

For indoor use only.

Fittings

Brass barb; 0.24” (6.1 mm) o.d. 

Suggested Cable

Shielded: 

Belden #9939 (22 AWG) 3-wire multi-conductor (or similar) 

Belden #9940 (22 AWG) 4-wire multi-conductor (or similar) 

Belden #9939 (22 AWG) 5-wire multi-conductor (or similar)
Unshielded: 

Belden #8443 (22 AWG) 3-wire multi-conductor (or similar) 

Belden #8444 (22 AWG) 4-wire multi-conductor (or similar) 

Belden #8445 (22 AWG) 5-wire multi-conductor (or similar)

Environmental Rating

IP65, NEMA 4

Flammability Rating

UL 94 5VA fire retardant ABS, plenum rated

Limited Warranty

5 years

EMC Conformance: EN 61000-6-3 and A1 Class B, EN 61000-6-1.   * Class 2/II power source.   ** For measured values between 200 and 7000 ft/min (1 and 35 m/s).

1/2-inch NPT female threaded coupler

50

NIST

NIST

Reviews: