Johnson Controls DPT 260 Catalog Page

NEW

MULTI-RANGE

LCD COMBO

Model DPT 260

Very Low Differential Multi-Configurable

Pressure Transducer

Unidirectional Ranges: 0.1 - 10 in. W.C.

Bidirectional Ranges: ±0.1 - 10 in. W.C.

Air or Non-Conducting Gas

Target Users

● Service/Retrofit Friendly

● Small Users - Inventory &

Installation Savings

● Sub-Contractors - Quick

Installation

● Flexible for Building

Specification Changes

● Service Technicians -

Quick and Accurate
Reconfigurations

Features

■ Standard 3 1/2 Digit LCD

SIMPLE 5 STEP SETUP -

ALL SLIDE SWITCH

OPERATION

etra Systems 260 pressure transducers
sense differential or gauge (static)

S

pressure and convert this pressure
difference to a proportional electrical out­put for either field selectable unidirectional or
bidirectional pressure ranges. The 260 Series is
offered with field selectable high level analog
outputs of 1 to 5, 0 to 5, and 0 to 10 VDC, or
4 to 20 mA.

Used in Building Energy Management
Systems, these transducers are capable of
measuring pressures and flows with the
performance necessary for proper building
pressurization and air flow control.

The 260 Series transducers can be configured
for air pressure ranges as low as 0.1 in. W.C. full

scale. Static standard accuracy is ±1.0% full

scale in normal ambient temperature en­vironments. The units are temperature

compsensated to within ±0.02%FS/

(0.036%FS/oC) for zero and span.

Model Unidirectional Bidirectional

MS1 0.1, 0.25, 0.5, 1.0 in. WC FS ±0.1, 0.25, 0.5, 1.0 in. WC FS
MS2 1.0, 2.5, 5.0, 10 in. WC FS ±1.0, 2.5, 5.0, 10 in. WC FS

o

The Model 260 utilizes an all stainless steel
micro-tig welded sensor. The tensioned stain­less steel diaphragm and insulated stainless
steel electrode, positioned close to the
diaphragm, form a variable capacitor. Positive
pressure moves the diaphragm toward the
electrode, increasing the capacitance. A
decrease in pressure moves the diaphragm
away from the electrode, decreasing the
capacitance. The change in capacitance is
detected and converted to a linear DC
electrical signal by Setra’s custom ASIC tech­nology.

Optional Static Probe Designed
with a Gasket to Seal Against the
Duct.

F

Ranges

■ Field Selectable Multi-

Range

■ Field Selectable Multi-

Output

■ Fast Response Time

■ Simple 5-Step Setup - All

Slide Switch Operation

■ Field Accessible Push

Button Zero

■ Hinged Cover

■ External Mounting Tabs

■ Unregulated AC/DC

Operation

■ Microprocessor Based

Electronics - Guarantees
Range to Range Performance

■ NIST Traceable

■ Fire Retardant Case

(UL 94 V-0 Approved)

■ Meets Conformance

Standards

ISO

9001:
2000

Certified

✓

Performance Data

Thru All Field Selectable Ranges

Standard

*

Accuracy

RSS(at constant temp) ±1.0% FS

Non-Linearity, BFSL

±0.96% FS

Hysteresis 0.10% FS
Non-Repeatability 0.05% FS

Thermal Effects**

Compensated Range °F (°C) 32 to 122 (0 to 50)
Zero/Span Shift %FS/°F(°C) 0.02 (0.036)

Maximum Line Pressure 10 psi
Long Term Stability (max) 0.5% FS/1 YR MS2 & MS4

1.0% FS/1 YR MS1 & MS3

Position Effect
Zero Offset (%FS/G) 0.2%
(Unit is factory calibrated at 0g effect in the vertical position.)

* RSS of Non-Linearity, Hysteresis, and Non-Repeatability.
**Units calibrated at nominal 70˚F. Maximum thermal error computed from
this datum.

NOTE: Setra quality standards are based on ANSI-Z540-1.
The calibration of this product is NIST traceable.

Outline Drawings

4.75

120.7

4.25
108

Model 260 Specifications

Environmental Data

Temperature
Operating

Physical Description

Case Fire-Retardant Glass Filled

Mounting Two External Screw Holes

Electrical Connection Removable Screw Terminal Block
Pressure Fittings 3/16” O.D. Barbed Brass

Zero Push Button
Weight (approx.) 8 ounces

Pressure Media

Typically air or similar non-conducting gases.

Specifications subject to change without notice.

U.S. Patent nos. 4093915; 4358814; 4434203; 6019002; 6014800.
Other Patents Pending.

*

°F (°C) 32 to 122 (0 to 50)

Polyester (UL 94 V-0 Approved)
Hinged Lid

Vertical Position

Pressure Fitting

0

150

O.862

21.8

Electrical Data (Voltage)

Circuit 3-Wire (Com, Exc, Out)

Protected from Miswiring
Excitation 13 - 30 VDC/VAC
Field Selectable Output*1 to 5, 0 to 5 or 0 to 10 VDC

**

Bidirectional Output at Zero
Pressure: 1 to 5 VDC = 3 VDC

0 to 5 VDC = 2.5 VDC

0 to10 VDC = 5 VDC
Output Impedance 500 ohms

*Calibrated into a 50K ohm load, operable into a 10K ohm load or greater.
**Span (Full Scale) output factory set to within 1%.

Electrical Data (Current)

Circuit 2-Wire

Protected from Miswiring
Excitation 24V (DC Only)
Field Selectable Output
Bidirectional Output at Zero
Pressure: 12mA
External Load 0 to 800 ohms
Minimum supply voltage (VDC) = 13 Volts (at terminal)
Maximum supply voltage (VDC) = 30 Volts (at terminal)

*Calibrated at factory with a 24 VDC loop supply voltage and a 250 ohm load.

**Span (Full Scale) output factory set to wtihin ±0.16mA.

*

4 to 20mA

**

**

.59

14.9

1.49

37.8

1.25

31.7
.63

15.9

1.3

31.8

4.15

105.4

Optional Static
Probe Diagram

IN

1.03

26.3

.87
22

MM

ORDERING INFORMATION

Part Number Description

DPT260-MS1 0.1, 0.25, 0.5, 1.0 in. WC FS / ±0.1, 0.25, 0.5, 1.0 in. WC FS
DPT260-MS2 1.0, 2.5, 5.0, 10 in. WC FS / ±1.0, 2.5, 5.0, 10 in. WC FS
DPT260-MS1-SP 0.1, 0.25, 0.5, 1.0 in. WC FS / ±0.1, 0.25, 0.5, 1.0 in. WC FS with Static Probe
DPT260-MS2-SP 1.0, 2.5, 5.0, 10 in. WC FS / ±1.0, 2.5, 5.0, 10 in. WC FS with Static Probe

.51

12.9

1.50

38.1

7.7
196

9.3

236.9

JCI260 Rev. A 12/05

While we provide application assistance on all Setra products, both personally and through our literature, it is the
customer’s responsibility to determine the suitability of the product in the application.