Kobold DSF26 Operating Manual

KOBOLD DSF26 Digital Pressure Gauge

User Instructions

KOBOLD Instruments Inc. 1801 Parkway View Drive Pittsburgh PA 15205

Phone [phone] • Fax [phone] • www.koboldusa.com

Manual-DSF26_12-13

DSF26

Table Of Contents

KOBOLD DSF26 DIGITAL PRESSURE GAUGE

1.0 General . . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 1

2.0 Specifications . . . . . . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 2

3.0 Installation Instructions . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 5

4.0 Operation . . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 6

4.1 Turning the Unit On . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 6

4.2 Flow Measurement . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 6

5.0 Arrival of Damaged Equipment . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 6

6.0 Maintenance .. . . . . . . . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 6

7.0 Need Help With Your DSF26?. . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 6

List of Diagrams

Diagram 2.4: Sensor Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Diagram 3.1: Wiring . . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 5

List of Tables

Table 2.1: Material Combinations and Maximum Limits . . . . . . . . . . . . . . . . . . . 2

Table 2.2: Electrical Data. . . . . . . . . .. . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 3

Table 2.3: Flow Ranges and Fitting Sizes . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . 3

FM Rev. 12/03/13

DSF26

KOBOLD DSF26 DIGITAL PRESSURE GAUGE

User Instructions

CAUTION: For safety reasons, please read the cautionary information located at

the end of the manual, before attempting installation.

1.0 General
The DSF26 employs a piezo-resistive strain gauge element whose resistance varies in

proportion to an applied force (pressure). This variable resistance signal is conditioned to
provide an LED display and analog output. Optionally this meter can be provided with up
to 4 switches whose switch points and hysteresis are programmable.

2.0 Specifications
Table 2.1: General Specifications

Ranges: -14.7 to 5800 PSIG (see table 2.1 for

model numbers)

Over Pressure Protection:

To 3000 PSIG: 2X range Max.

Above 3000 PSIG: 1.5X range Max.
Sensor Type: Piezoresistive
Accuracy: ±0.5% of full scale ± 1 digit
Linearity: ±0.2% of full scale
Repeatability: ±0.1% of full scale
Operating Temperature:

Medium: -5°F to 220°F

Ambient: -5°F to 140°F

Storage: -40°F to 160°F
Temperature Drift Coefficients

Zero: < 0.05% of full scale/°F

Span: < 0,05% of full scale/°F
Sensing Membrane Location: Internal

Optional: Flush
Materials of Construction:

Wetted Parts: 316 Ti-Stainless Steel, Sapphire

Housing: 304 Stainless Steel, Polyamide

FM Rev. 12/03/13